diff options
Diffstat (limited to 'program')
| -rw-r--r-- | program/lib/MDB2.php | 8649 |
1 files changed, 4325 insertions, 4324 deletions
diff --git a/program/lib/MDB2.php b/program/lib/MDB2.php index 7b769ffba..45b20e3cb 100644 --- a/program/lib/MDB2.php +++ b/program/lib/MDB2.php @@ -1,4327 +1,4328 @@ -<?php
-// vim: set et ts=4 sw=4 fdm=marker:
-// +----------------------------------------------------------------------+
-// | PHP versions 4 and 5 |
-// +----------------------------------------------------------------------+
-// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, |
-// | Stig. S. Bakken, Lukas Smith |
-// | All rights reserved. |
-// +----------------------------------------------------------------------+
-// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
-// | API as well as database abstraction for PHP applications. |
-// | This LICENSE is in the BSD license style. |
-// | |
-// | Redistribution and use in source and binary forms, with or without |
-// | modification, are permitted provided that the following conditions |
-// | are met: |
-// | |
-// | Redistributions of source code must retain the above copyright |
-// | notice, this list of conditions and the following disclaimer. |
-// | |
-// | Redistributions in binary form must reproduce the above copyright |
-// | notice, this list of conditions and the following disclaimer in the |
-// | documentation and/or other materials provided with the distribution. |
-// | |
-// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
-// | Lukas Smith nor the names of his contributors may be used to endorse |
-// | or promote products derived from this software without specific prior|
-// | written permission. |
-// | |
-// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
-// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
-// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
-// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
-// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
-// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
-// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
-// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
-// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
-// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
-// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
-// | POSSIBILITY OF SUCH DAMAGE. |
-// +----------------------------------------------------------------------+
-// | Author: Lukas Smith <smith@pooteeweet.org> |
-// +----------------------------------------------------------------------+
-//
-// $Id: MDB2.php,v 1.318 2008/03/08 14:18:38 quipo Exp $
-//
-
-/**
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
-
-require_once 'PEAR.php';
-
-// {{{ Error constants
-
-/**
- * The method mapErrorCode in each MDB2_dbtype implementation maps
- * native error codes to one of these.
- *
- * If you add an error code here, make sure you also add a textual
- * version of it in MDB2::errorMessage().
- */
-
-define('MDB2_OK', true);
-define('MDB2_ERROR', -1);
-define('MDB2_ERROR_SYNTAX', -2);
-define('MDB2_ERROR_CONSTRAINT', -3);
-define('MDB2_ERROR_NOT_FOUND', -4);
-define('MDB2_ERROR_ALREADY_EXISTS', -5);
-define('MDB2_ERROR_UNSUPPORTED', -6);
-define('MDB2_ERROR_MISMATCH', -7);
-define('MDB2_ERROR_INVALID', -8);
-define('MDB2_ERROR_NOT_CAPABLE', -9);
-define('MDB2_ERROR_TRUNCATED', -10);
-define('MDB2_ERROR_INVALID_NUMBER', -11);
-define('MDB2_ERROR_INVALID_DATE', -12);
-define('MDB2_ERROR_DIVZERO', -13);
-define('MDB2_ERROR_NODBSELECTED', -14);
-define('MDB2_ERROR_CANNOT_CREATE', -15);
-define('MDB2_ERROR_CANNOT_DELETE', -16);
-define('MDB2_ERROR_CANNOT_DROP', -17);
-define('MDB2_ERROR_NOSUCHTABLE', -18);
-define('MDB2_ERROR_NOSUCHFIELD', -19);
-define('MDB2_ERROR_NEED_MORE_DATA', -20);
-define('MDB2_ERROR_NOT_LOCKED', -21);
-define('MDB2_ERROR_VALUE_COUNT_ON_ROW', -22);
-define('MDB2_ERROR_INVALID_DSN', -23);
-define('MDB2_ERROR_CONNECT_FAILED', -24);
-define('MDB2_ERROR_EXTENSION_NOT_FOUND',-25);
-define('MDB2_ERROR_NOSUCHDB', -26);
-define('MDB2_ERROR_ACCESS_VIOLATION', -27);
-define('MDB2_ERROR_CANNOT_REPLACE', -28);
-define('MDB2_ERROR_CONSTRAINT_NOT_NULL',-29);
-define('MDB2_ERROR_DEADLOCK', -30);
-define('MDB2_ERROR_CANNOT_ALTER', -31);
-define('MDB2_ERROR_MANAGER', -32);
-define('MDB2_ERROR_MANAGER_PARSE', -33);
-define('MDB2_ERROR_LOADMODULE', -34);
-define('MDB2_ERROR_INSUFFICIENT_DATA', -35);
-define('MDB2_ERROR_NO_PERMISSION', -36);
-
-// }}}
-// {{{ Verbose constants
-/**
- * These are just helper constants to more verbosely express parameters to prepare()
- */
-
-define('MDB2_PREPARE_MANIP', false);
-define('MDB2_PREPARE_RESULT', null);
-
-// }}}
-// {{{ Fetchmode constants
-
-/**
- * This is a special constant that tells MDB2 the user hasn't specified
- * any particular get mode, so the default should be used.
- */
-define('MDB2_FETCHMODE_DEFAULT', 0);
-
-/**
- * Column data indexed by numbers, ordered from 0 and up
- */
-define('MDB2_FETCHMODE_ORDERED', 1);
-
-/**
- * Column data indexed by column names
- */
-define('MDB2_FETCHMODE_ASSOC', 2);
-
-/**
- * Column data as object properties
- */
-define('MDB2_FETCHMODE_OBJECT', 3);
-
-/**
- * For multi-dimensional results: normally the first level of arrays
- * is the row number, and the second level indexed by column number or name.
- * MDB2_FETCHMODE_FLIPPED switches this order, so the first level of arrays
- * is the column name, and the second level the row number.
- */
-define('MDB2_FETCHMODE_FLIPPED', 4);
-
-// }}}
-// {{{ Portability mode constants
-
-/**
- * Portability: turn off all portability features.
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_NONE', 0);
-
-/**
- * Portability: convert names of tables and fields to case defined in the
- * "field_case" option when using the query*(), fetch*() and tableInfo() methods.
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_FIX_CASE', 1);
-
-/**
- * Portability: right trim the data output by query*() and fetch*().
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_RTRIM', 2);
-
-/**
- * Portability: force reporting the number of rows deleted.
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_DELETE_COUNT', 4);
-
-/**
- * Portability: not needed in MDB2 (just left here for compatibility to DB)
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_NUMROWS', 8);
-
-/**
- * Portability: makes certain error messages in certain drivers compatible
- * with those from other DBMS's.
- *
- * + mysql, mysqli: change unique/primary key constraints
- * MDB2_ERROR_ALREADY_EXISTS -> MDB2_ERROR_CONSTRAINT
- *
- * + odbc(access): MS's ODBC driver reports 'no such field' as code
- * 07001, which means 'too few parameters.' When this option is on
- * that code gets mapped to MDB2_ERROR_NOSUCHFIELD.
- *
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_ERRORS', 16);
-
-/**
- * Portability: convert empty values to null strings in data output by
- * query*() and fetch*().
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_EMPTY_TO_NULL', 32);
-
-/**
- * Portability: removes database/table qualifiers from associative indexes
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES', 64);
-
-/**
- * Portability: turn on all portability features.
- * @see MDB2_Driver_Common::setOption()
- */
-define('MDB2_PORTABILITY_ALL', 127);
-
-// }}}
-// {{{ Globals for class instance tracking
-
-/**
- * These are global variables that are used to track the various class instances
- */
-
-$GLOBALS['_MDB2_databases'] = array();
-$GLOBALS['_MDB2_dsninfo_default'] = array(
- 'phptype' => false,
- 'dbsyntax' => false,
- 'username' => false,
- 'password' => false,
- 'protocol' => false,
- 'hostspec' => false,
- 'port' => false,
- 'socket' => false,
- 'database' => false,
- 'mode' => false,
-);
-
-// }}}
-// {{{ class MDB2
-
-/**
- * The main 'MDB2' class is simply a container class with some static
- * methods for creating DB objects as well as some utility functions
- * common to all parts of DB.
- *
- * The object model of MDB2 is as follows (indentation means inheritance):
- *
- * MDB2 The main MDB2 class. This is simply a utility class
- * with some 'static' methods for creating MDB2 objects as
- * well as common utility functions for other MDB2 classes.
- *
- * MDB2_Driver_Common The base for each MDB2 implementation. Provides default
- * | implementations (in OO lingo virtual methods) for
- * | the actual DB implementations as well as a bunch of
- * | query utility functions.
- * |
- * +-MDB2_Driver_mysql The MDB2 implementation for MySQL. Inherits MDB2_Driver_Common.
- * When calling MDB2::factory or MDB2::connect for MySQL
- * connections, the object returned is an instance of this
- * class.
- * +-MDB2_Driver_pgsql The MDB2 implementation for PostGreSQL. Inherits MDB2_Driver_Common.
- * When calling MDB2::factory or MDB2::connect for PostGreSQL
- * connections, the object returned is an instance of this
- * class.
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2
-{
- // {{{ function setOptions(&$db, $options)
-
- /**
- * set option array in an exiting database object
- *
- * @param MDB2_Driver_Common MDB2 object
- * @param array An associative array of option names and their values.
- *
- * @return mixed MDB2_OK or a PEAR Error object
- *
- * @access public
- */
- function setOptions(&$db, $options)
- {
- if (is_array($options)) {
- foreach ($options as $option => $value) {
- $test = $db->setOption($option, $value);
- if (PEAR::isError($test)) {
- return $test;
- }
- }
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function classExists($classname)
-
- /**
- * Checks if a class exists without triggering __autoload
- *
- * @param string classname
- *
- * @return bool true success and false on error
- * @static
- * @access public
- */
- function classExists($classname)
- {
- if (version_compare(phpversion(), "5.0", ">=")) {
- return class_exists($classname, false);
- }
- return class_exists($classname);
- }
-
- // }}}
- // {{{ function loadClass($class_name, $debug)
-
- /**
- * Loads a PEAR class.
- *
- * @param string classname to load
- * @param bool if errors should be suppressed
- *
- * @return mixed true success or PEAR_Error on failure
- *
- * @access public
- */
- function loadClass($class_name, $debug)
- {
- if (!MDB2::classExists($class_name)) {
- $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
- if ($debug) {
- $include = include_once($file_name);
- } else {
- $include = @include_once($file_name);
- }
- if (!$include) {
- if (!MDB2::fileExists($file_name)) {
- $msg = "unable to find package '$class_name' file '$file_name'";
- } else {
- $msg = "unable to load class '$class_name' from file '$file_name'";
- }
- $err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, $msg);
- return $err;
- }
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function &factory($dsn, $options = false)
-
- /**
- * Create a new MDB2 object for the specified database type
- *
- * IMPORTANT: In order for MDB2 to work properly it is necessary that
- * you make sure that you work with a reference of the original
- * object instead of a copy (this is a PHP4 quirk).
- *
- * For example:
- * $db =& MDB2::factory($dsn);
- * ^^
- * And not:
- * $db = MDB2::factory($dsn);
- *
- * @param mixed 'data source name', see the MDB2::parseDSN
- * method for a description of the dsn format.
- * Can also be specified as an array of the
- * format returned by MDB2::parseDSN.
- * @param array An associative array of option names and
- * their values.
- *
- * @return mixed a newly created MDB2 object, or false on error
- *
- * @access public
- */
- function &factory($dsn, $options = false)
- {
- $dsninfo = MDB2::parseDSN($dsn);
- if (empty($dsninfo['phptype'])) {
- $err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND,
- null, null, 'no RDBMS driver specified');
- return $err;
- }
- $class_name = 'MDB2_Driver_'.$dsninfo['phptype'];
-
- $debug = (!empty($options['debug']));
- $err = MDB2::loadClass($class_name, $debug);
- if (PEAR::isError($err)) {
- return $err;
- }
-
- $db =& new $class_name();
- $db->setDSN($dsninfo);
- $err = MDB2::setOptions($db, $options);
- if (PEAR::isError($err)) {
- return $err;
- }
-
- return $db;
- }
-
- // }}}
- // {{{ function &connect($dsn, $options = false)
-
- /**
- * Create a new MDB2 connection object and connect to the specified
- * database
- *
- * IMPORTANT: In order for MDB2 to work properly it is necessary that
- * you make sure that you work with a reference of the original
- * object instead of a copy (this is a PHP4 quirk).
- *
- * For example:
- * $db =& MDB2::connect($dsn);
- * ^^
- * And not:
- * $db = MDB2::connect($dsn);
- * ^^
- *
- * @param mixed 'data source name', see the MDB2::parseDSN
- * method for a description of the dsn format.
- * Can also be specified as an array of the
- * format returned by MDB2::parseDSN.
- * @param array An associative array of option names and
- * their values.
- *
- * @return mixed a newly created MDB2 connection object, or a MDB2
- * error object on error
- *
- * @access public
- * @see MDB2::parseDSN
- */
- function &connect($dsn, $options = false)
- {
- $db =& MDB2::factory($dsn, $options);
- if (PEAR::isError($db)) {
- return $db;
- }
-
- $err = $db->connect();
- if (PEAR::isError($err)) {
- $dsn = $db->getDSN('string', 'xxx');
- $db->disconnect();
- $err->addUserInfo($dsn);
- return $err;
- }
-
- return $db;
- }
-
- // }}}
- // {{{ function &singleton($dsn = null, $options = false)
-
- /**
- * Returns a MDB2 connection with the requested DSN.
- * A new MDB2 connection object is only created if no object with the
- * requested DSN exists yet.
- *
- * IMPORTANT: In order for MDB2 to work properly it is necessary that
- * you make sure that you work with a reference of the original
- * object instead of a copy (this is a PHP4 quirk).
- *
- * For example:
- * $db =& MDB2::singleton($dsn);
- * ^^
- * And not:
- * $db = MDB2::singleton($dsn);
- * ^^
- *
- * @param mixed 'data source name', see the MDB2::parseDSN
- * method for a description of the dsn format.
- * Can also be specified as an array of the
- * format returned by MDB2::parseDSN.
- * @param array An associative array of option names and
- * their values.
- *
- * @return mixed a newly created MDB2 connection object, or a MDB2
- * error object on error
- *
- * @access public
- * @see MDB2::parseDSN
- */
- function &singleton($dsn = null, $options = false)
- {
- if ($dsn) {
- $dsninfo = MDB2::parseDSN($dsn);
- $dsninfo = array_merge($GLOBALS['_MDB2_dsninfo_default'], $dsninfo);
- $keys = array_keys($GLOBALS['_MDB2_databases']);
- for ($i=0, $j=count($keys); $i<$j; ++$i) {
- if (isset($GLOBALS['_MDB2_databases'][$keys[$i]])) {
- $tmp_dsn = $GLOBALS['_MDB2_databases'][$keys[$i]]->getDSN('array');
- if (count(array_diff_assoc($tmp_dsn, $dsninfo)) == 0) {
- MDB2::setOptions($GLOBALS['_MDB2_databases'][$keys[$i]], $options);
- return $GLOBALS['_MDB2_databases'][$keys[$i]];
- }
- }
- }
- } elseif (is_array($GLOBALS['_MDB2_databases']) && reset($GLOBALS['_MDB2_databases'])) {
- $db =& $GLOBALS['_MDB2_databases'][key($GLOBALS['_MDB2_databases'])];
- return $db;
- }
- $db =& MDB2::factory($dsn, $options);
- return $db;
- }
-
- // }}}
- // {{{ function areEquals()
-
- /**
- * It looks like there's a memory leak in array_diff() in PHP 5.1.x,
- * so use this method instead.
- * @see http://pear.php.net/bugs/bug.php?id=11790
- *
- * @param array $arr1
- * @param array $arr2
- * @return boolean
- */
- function areEquals($arr1, $arr2)
- {
- if (count($arr1) != count($arr2)) {
- return false;
- }
- foreach (array_keys($arr1) as $k) {
- if (!array_key_exists($k, $arr2) || $arr1[$k] != $arr2[$k]) {
- return false;
- }
- }
- return true;
- }
-
- // }}}
- // {{{ function loadFile($file)
-
- /**
- * load a file (like 'Date')
- *
- * @param string name of the file in the MDB2 directory (without '.php')
- *
- * @return string name of the file that was included
- *
- * @access public
- */
- function loadFile($file)
- {
- $file_name = 'MDB2'.DIRECTORY_SEPARATOR.$file.'.php';
- if (!MDB2::fileExists($file_name)) {
- return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'unable to find: '.$file_name);
- }
- if (!include_once($file_name)) {
- return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'unable to load driver class: '.$file_name);
- }
- return $file_name;
- }
-
- // }}}
- // {{{ function apiVersion()
-
- /**
- * Return the MDB2 API version
- *
- * @return string the MDB2 API version number
- *
- * @access public
- */
- function apiVersion()
- {
- return '2.5.0b1';
- }
-
- // }}}
- // {{{ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null)
-
- /**
- * This method is used to communicate an error and invoke error
- * callbacks etc. Basically a wrapper for PEAR::raiseError
- * without the message string.
- *
- * @param mixed int error code
- *
- * @param int error mode, see PEAR_Error docs
- *
- * @param mixed If error mode is PEAR_ERROR_TRIGGER, this is the
- * error level (E_USER_NOTICE etc). If error mode is
- * PEAR_ERROR_CALLBACK, this is the callback function,
- * either as a function name, or as an array of an
- * object and method name. For other error modes this
- * parameter is ignored.
- *
- * @param string Extra debug information. Defaults to the last
- * query and native error code.
- *
- * @return PEAR_Error instance of a PEAR Error object
- *
- * @access private
- * @see PEAR_Error
- */
- function &raiseError($code = null,
- $mode = null,
- $options = null,
- $userinfo = null,
- $dummy1 = null,
- $dummy2 = null,
- $dummy3 = false)
- {
- $err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true);
- return $err;
- }
-
- // }}}
- // {{{ function isError($data, $code = null)
-
- /**
- * Tell whether a value is a MDB2 error.
- *
- * @param mixed the value to test
- * @param int if is an error object, return true
- * only if $code is a string and
- * $db->getMessage() == $code or
- * $code is an integer and $db->getCode() == $code
- *
- * @return bool true if parameter is an error
- *
- * @access public
- */
- function isError($data, $code = null)
- {
- if (is_a($data, 'MDB2_Error')) {
- if (is_null($code)) {
- return true;
- } elseif (is_string($code)) {
- return $data->getMessage() === $code;
- } else {
- $code = (array)$code;
- return in_array($data->getCode(), $code);
- }
- }
- return false;
- }
-
- // }}}
- // {{{ function isConnection($value)
-
- /**
- * Tell whether a value is a MDB2 connection
- *
- * @param mixed value to test
- *
- * @return bool whether $value is a MDB2 connection
- *
- * @access public
- */
- function isConnection($value)
- {
- return is_a($value, 'MDB2_Driver_Common');
- }
-
- // }}}
- // {{{ function isResult($value)
-
- /**
- * Tell whether a value is a MDB2 result
- *
- * @param mixed value to test
- *
- * @return bool whether $value is a MDB2 result
- *
- * @access public
- */
- function isResult($value)
- {
- return is_a($value, 'MDB2_Result');
- }
-
- // }}}
- // {{{ function isResultCommon($value)
-
- /**
- * Tell whether a value is a MDB2 result implementing the common interface
- *
- * @param mixed value to test
- *
- * @return bool whether $value is a MDB2 result implementing the common interface
- *
- * @access public
- */
- function isResultCommon($value)
- {
- return is_a($value, 'MDB2_Result_Common');
- }
-
- // }}}
- // {{{ function isStatement($value)
-
- /**
- * Tell whether a value is a MDB2 statement interface
- *
- * @param mixed value to test
- *
- * @return bool whether $value is a MDB2 statement interface
- *
- * @access public
- */
- function isStatement($value)
- {
- return is_a($value, 'MDB2_Statement_Common');
- }
-
- // }}}
- // {{{ function errorMessage($value = null)
-
- /**
- * Return a textual error message for a MDB2 error code
- *
- * @param int|array integer error code,
- null to get the current error code-message map,
- or an array with a new error code-message map
- *
- * @return string error message, or false if the error code was
- * not recognized
- *
- * @access public
- */
- function errorMessage($value = null)
- {
- static $errorMessages;
-
- if (is_array($value)) {
- $errorMessages = $value;
- return MDB2_OK;
- }
-
- if (!isset($errorMessages)) {
- $errorMessages = array(
- MDB2_OK => 'no error',
- MDB2_ERROR => 'unknown error',
- MDB2_ERROR_ALREADY_EXISTS => 'already exists',
- MDB2_ERROR_CANNOT_CREATE => 'can not create',
- MDB2_ERROR_CANNOT_ALTER => 'can not alter',
- MDB2_ERROR_CANNOT_REPLACE => 'can not replace',
- MDB2_ERROR_CANNOT_DELETE => 'can not delete',
- MDB2_ERROR_CANNOT_DROP => 'can not drop',
- MDB2_ERROR_CONSTRAINT => 'constraint violation',
- MDB2_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint',
- MDB2_ERROR_DIVZERO => 'division by zero',
- MDB2_ERROR_INVALID => 'invalid',
- MDB2_ERROR_INVALID_DATE => 'invalid date or time',
- MDB2_ERROR_INVALID_NUMBER => 'invalid number',
- MDB2_ERROR_MISMATCH => 'mismatch',
- MDB2_ERROR_NODBSELECTED => 'no database selected',
- MDB2_ERROR_NOSUCHFIELD => 'no such field',
- MDB2_ERROR_NOSUCHTABLE => 'no such table',
- MDB2_ERROR_NOT_CAPABLE => 'MDB2 backend not capable',
- MDB2_ERROR_NOT_FOUND => 'not found',
- MDB2_ERROR_NOT_LOCKED => 'not locked',
- MDB2_ERROR_SYNTAX => 'syntax error',
- MDB2_ERROR_UNSUPPORTED => 'not supported',
- MDB2_ERROR_VALUE_COUNT_ON_ROW => 'value count on row',
- MDB2_ERROR_INVALID_DSN => 'invalid DSN',
- MDB2_ERROR_CONNECT_FAILED => 'connect failed',
- MDB2_ERROR_NEED_MORE_DATA => 'insufficient data supplied',
- MDB2_ERROR_EXTENSION_NOT_FOUND=> 'extension not found',
- MDB2_ERROR_NOSUCHDB => 'no such database',
- MDB2_ERROR_ACCESS_VIOLATION => 'insufficient permissions',
- MDB2_ERROR_LOADMODULE => 'error while including on demand module',
- MDB2_ERROR_TRUNCATED => 'truncated',
- MDB2_ERROR_DEADLOCK => 'deadlock detected',
- MDB2_ERROR_NO_PERMISSION => 'no permission',
- );
- }
-
- if (is_null($value)) {
- return $errorMessages;
- }
-
- if (PEAR::isError($value)) {
- $value = $value->getCode();
- }
-
- return isset($errorMessages[$value]) ?
- $errorMessages[$value] : $errorMessages[MDB2_ERROR];
- }
-
- // }}}
- // {{{ function parseDSN($dsn)
-
- /**
- * Parse a data source name.
- *
- * Additional keys can be added by appending a URI query string to the
- * end of the DSN.
- *
- * The format of the supplied DSN is in its fullest form:
- * <code>
- * phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true
- * </code>
- *
- * Most variations are allowed:
- * <code>
- * phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644
- * phptype://username:password@hostspec/database_name
- * phptype://username:password@hostspec
- * phptype://username@hostspec
- * phptype://hostspec/database
- * phptype://hostspec
- * phptype(dbsyntax)
- * phptype
- * </code>
- *
- * @param string Data Source Name to be parsed
- *
- * @return array an associative array with the following keys:
- * + phptype: Database backend used in PHP (mysql, odbc etc.)
- * + dbsyntax: Database used with regards to SQL syntax etc.
- * + protocol: Communication protocol to use (tcp, unix etc.)
- * + hostspec: Host specification (hostname[:port])
- * + database: Database to use on the DBMS server
- * + username: User name for login
- * + password: Password for login
- *
- * @access public
- * @author Tomas V.V.Cox <cox@idecnet.com>
- */
- function parseDSN($dsn)
- {
- $parsed = $GLOBALS['_MDB2_dsninfo_default'];
-
- if (is_array($dsn)) {
- $dsn = array_merge($parsed, $dsn);
- if (!$dsn['dbsyntax']) {
- $dsn['dbsyntax'] = $dsn['phptype'];
- }
- return $dsn;
- }
-
- // Find phptype and dbsyntax
- if (($pos = strpos($dsn, '://')) !== false) {
- $str = substr($dsn, 0, $pos);
- $dsn = substr($dsn, $pos + 3);
- } else {
- $str = $dsn;
- $dsn = null;
- }
-
- // Get phptype and dbsyntax
- // $str => phptype(dbsyntax)
- if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
- $parsed['phptype'] = $arr[1];
- $parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
- } else {
- $parsed['phptype'] = $str;
- $parsed['dbsyntax'] = $str;
- }
-
- if (!count($dsn)) {
- return $parsed;
- }
-
- // Get (if found): username and password
- // $dsn => username:password@protocol+hostspec/database
- if (($at = strrpos($dsn,'@')) !== false) {
- $str = substr($dsn, 0, $at);
- $dsn = substr($dsn, $at + 1);
- if (($pos = strpos($str, ':')) !== false) {
- $parsed['username'] = rawurldecode(substr($str, 0, $pos));
- $parsed['password'] = rawurldecode(substr($str, $pos + 1));
- } else {
- $parsed['username'] = rawurldecode($str);
- }
- }
-
- // Find protocol and hostspec
-
- // $dsn => proto(proto_opts)/database
- if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
- $proto = $match[1];
- $proto_opts = $match[2] ? $match[2] : false;
- $dsn = $match[3];
-
- // $dsn => protocol+hostspec/database (old format)
- } else {
- if (strpos($dsn, '+') !== false) {
- list($proto, $dsn) = explode('+', $dsn, 2);
- }
- if ( strpos($dsn, '//') === 0
- && strpos($dsn, '/', 2) !== false
- && $parsed['phptype'] == 'oci8'
- ) {
- //oracle's "Easy Connect" syntax:
- //"username/password@[//]host[:port][/service_name]"
- //e.g. "scott/tiger@//mymachine:1521/oracle"
- $proto_opts = $dsn;
- $dsn = substr($proto_opts, strrpos($proto_opts, '/') + 1);
- } elseif (strpos($dsn, '/') !== false) {
- list($proto_opts, $dsn) = explode('/', $dsn, 2);
- } else {
- $proto_opts = $dsn;
- $dsn = null;
- }
- }
-
- // process the different protocol options
- $parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
- $proto_opts = rawurldecode($proto_opts);
- if (strpos($proto_opts, ':') !== false) {
- list($proto_opts, $parsed['port']) = explode(':', $proto_opts);
- }
- if ($parsed['protocol'] == 'tcp') {
- $parsed['hostspec'] = $proto_opts;
- } elseif ($parsed['protocol'] == 'unix') {
- $parsed['socket'] = $proto_opts;
- }
-
- // Get dabase if any
- // $dsn => database
- if ($dsn) {
- // /database
- if (($pos = strpos($dsn, '?')) === false) {
- $parsed['database'] = $dsn;
- // /database?param1=value1¶m2=value2
- } else {
- $parsed['database'] = substr($dsn, 0, $pos);
- $dsn = substr($dsn, $pos + 1);
- if (strpos($dsn, '&') !== false) {
- $opts = explode('&', $dsn);
- } else { // database?param1=value1
- $opts = array($dsn);
- }
- foreach ($opts as $opt) {
- list($key, $value) = explode('=', $opt);
- if (!isset($parsed[$key])) {
- // don't allow params overwrite
- $parsed[$key] = rawurldecode($value);
- }
- }
- }
- }
-
- return $parsed;
- }
-
- // }}}
- // {{{ function fileExists($file)
-
- /**
- * Checks if a file exists in the include path
- *
- * @param string filename
- *
- * @return bool true success and false on error
- *
- * @access public
- */
- function fileExists($file)
- {
- // safe_mode does notwork with is_readable()
- if (!@ini_get('safe_mode')) {
- $dirs = explode(PATH_SEPARATOR, ini_get('include_path'));
- foreach ($dirs as $dir) {
- if (is_readable($dir . DIRECTORY_SEPARATOR . $file)) {
- return true;
- }
- }
- } else {
- $fp = @fopen($file, 'r', true);
- if (is_resource($fp)) {
- @fclose($fp);
- return true;
- }
- }
- return false;
- }
- // }}}
-}
-
-// }}}
-// {{{ class MDB2_Error extends PEAR_Error
-
-/**
- * MDB2_Error implements a class for reporting portable database error
- * messages.
- *
- * @package MDB2
- * @category Database
- * @author Stig Bakken <ssb@fast.no>
- */
-class MDB2_Error extends PEAR_Error
-{
- // {{{ constructor: function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN, $level = E_USER_NOTICE, $debuginfo = null)
-
- /**
- * MDB2_Error constructor.
- *
- * @param mixed MDB2 error code, or string with error message.
- * @param int what 'error mode' to operate in
- * @param int what error level to use for $mode & PEAR_ERROR_TRIGGER
- * @param mixed additional debug info, such as the last query
- */
- function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN,
- $level = E_USER_NOTICE, $debuginfo = null, $dummy = null)
- {
- if (is_null($code)) {
- $code = MDB2_ERROR;
- }
- $this->PEAR_Error('MDB2 Error: '.MDB2::errorMessage($code), $code,
- $mode, $level, $debuginfo);
- }
-
- // }}}
-}
-
-// }}}
-// {{{ class MDB2_Driver_Common extends PEAR
-
-/**
- * MDB2_Driver_Common: Base class that is extended by each MDB2 driver
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Driver_Common extends PEAR
-{
- // {{{ Variables (Properties)
-
- /**
- * index of the MDB2 object within the $GLOBALS['_MDB2_databases'] array
- * @var int
- * @access public
- */
- var $db_index = 0;
-
- /**
- * DSN used for the next query
- * @var array
- * @access protected
- */
- var $dsn = array();
-
- /**
- * DSN that was used to create the current connection
- * @var array
- * @access protected
- */
- var $connected_dsn = array();
-
- /**
- * connection resource
- * @var mixed
- * @access protected
- */
- var $connection = 0;
-
- /**
- * if the current opened connection is a persistent connection
- * @var bool
- * @access protected
- */
- var $opened_persistent;
-
- /**
- * the name of the database for the next query
- * @var string
- * @access protected
- */
- var $database_name = '';
-
- /**
- * the name of the database currently selected
- * @var string
- * @access protected
- */
- var $connected_database_name = '';
-
- /**
- * server version information
- * @var string
- * @access protected
- */
- var $connected_server_info = '';
-
- /**
- * list of all supported features of the given driver
- * @var array
- * @access public
- */
- var $supported = array(
- 'sequences' => false,
- 'indexes' => false,
- 'affected_rows' => false,
- 'summary_functions' => false,
- 'order_by_text' => false,
- 'transactions' => false,
- 'savepoints' => false,
- 'current_id' => false,
- 'limit_queries' => false,
- 'LOBs' => false,
- 'replace' => false,
- 'sub_selects' => false,
- 'triggers' => false,
- 'auto_increment' => false,
- 'primary_key' => false,
- 'result_introspection' => false,
- 'prepared_statements' => false,
- 'identifier_quoting' => false,
- 'pattern_escaping' => false,
- 'new_link' => false,
- );
-
- /**
- * Array of supported options that can be passed to the MDB2 instance.
- *
- * The options can be set during object creation, using
- * MDB2::connect(), MDB2::factory() or MDB2::singleton(). The options can
- * also be set after the object is created, using MDB2::setOptions() or
- * MDB2_Driver_Common::setOption().
- * The list of available option includes:
- * <ul>
- * <li>$options['ssl'] -> boolean: determines if ssl should be used for connections</li>
- * <li>$options['field_case'] -> CASE_LOWER|CASE_UPPER: determines what case to force on field/table names</li>
- * <li>$options['disable_query'] -> boolean: determines if queries should be executed</li>
- * <li>$options['result_class'] -> string: class used for result sets</li>
- * <li>$options['buffered_result_class'] -> string: class used for buffered result sets</li>
- * <li>$options['result_wrap_class'] -> string: class used to wrap result sets into</li>
- * <li>$options['result_buffering'] -> boolean should results be buffered or not?</li>
- * <li>$options['fetch_class'] -> string: class to use when fetch mode object is used</li>
- * <li>$options['persistent'] -> boolean: persistent connection?</li>
- * <li>$options['debug'] -> integer: numeric debug level</li>
- * <li>$options['debug_handler'] -> string: function/method that captures debug messages</li>
- * <li>$options['debug_expanded_output'] -> bool: BC option to determine if more context information should be send to the debug handler</li>
- * <li>$options['default_text_field_length'] -> integer: default text field length to use</li>
- * <li>$options['lob_buffer_length'] -> integer: LOB buffer length</li>
- * <li>$options['log_line_break'] -> string: line-break format</li>
- * <li>$options['idxname_format'] -> string: pattern for index name</li>
- * <li>$options['seqname_format'] -> string: pattern for sequence name</li>
- * <li>$options['savepoint_format'] -> string: pattern for auto generated savepoint names</li>
- * <li>$options['statement_format'] -> string: pattern for prepared statement names</li>
- * <li>$options['seqcol_name'] -> string: sequence column name</li>
- * <li>$options['quote_identifier'] -> boolean: if identifier quoting should be done when check_option is used</li>
- * <li>$options['use_transactions'] -> boolean: if transaction use should be enabled</li>
- * <li>$options['decimal_places'] -> integer: number of decimal places to handle</li>
- * <li>$options['portability'] -> integer: portability constant</li>
- * <li>$options['modules'] -> array: short to long module name mapping for __call()</li>
- * <li>$options['emulate_prepared'] -> boolean: force prepared statements to be emulated</li>
- * <li>$options['datatype_map'] -> array: map user defined datatypes to other primitive datatypes</li>
- * <li>$options['datatype_map_callback'] -> array: callback function/method that should be called</li>
- * <li>$options['bindname_format'] -> string: regular expression pattern for named parameters
- * <li>$options['max_identifiers_length'] -> integer: max identifier length</li>
- * </ul>
- *
- * @var array
- * @access public
- * @see MDB2::connect()
- * @see MDB2::factory()
- * @see MDB2::singleton()
- * @see MDB2_Driver_Common::setOption()
- */
- var $options = array(
- 'ssl' => false,
- 'field_case' => CASE_LOWER,
- 'disable_query' => false,
- 'result_class' => 'MDB2_Result_%s',
- 'buffered_result_class' => 'MDB2_BufferedResult_%s',
- 'result_wrap_class' => false,
- 'result_buffering' => true,
- 'fetch_class' => 'stdClass',
- 'persistent' => false,
- 'debug' => 0,
- 'debug_handler' => 'MDB2_defaultDebugOutput',
- 'debug_expanded_output' => false,
- 'default_text_field_length' => 4096,
- 'lob_buffer_length' => 8192,
- 'log_line_break' => "\n",
- 'idxname_format' => '%s_idx',
- 'seqname_format' => '%s_seq',
- 'savepoint_format' => 'MDB2_SAVEPOINT_%s',
- 'statement_format' => 'MDB2_STATEMENT_%1$s_%2$s',
- 'seqcol_name' => 'sequence',
- 'quote_identifier' => false,
- 'use_transactions' => true,
- 'decimal_places' => 2,
- 'portability' => MDB2_PORTABILITY_ALL,
- 'modules' => array(
- 'ex' => 'Extended',
- 'dt' => 'Datatype',
- 'mg' => 'Manager',
- 'rv' => 'Reverse',
- 'na' => 'Native',
- 'fc' => 'Function',
- ),
- 'emulate_prepared' => false,
- 'datatype_map' => array(),
- 'datatype_map_callback' => array(),
- 'nativetype_map_callback' => array(),
- 'lob_allow_url_include' => false,
- 'bindname_format' => '(?:\d+)|(?:[a-zA-Z][a-zA-Z0-9_]*)',
- 'max_identifiers_length' => 30,
- );
-
- /**
- * string array
- * @var string
- * @access protected
- */
- var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => false, 'escape_pattern' => false);
-
- /**
- * identifier quoting
- * @var array
- * @access protected
- */
- var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
-
- /**
- * sql comments
- * @var array
- * @access protected
- */
- var $sql_comments = array(
- array('start' => '--', 'end' => "\n", 'escape' => false),
- array('start' => '/*', 'end' => '*/', 'escape' => false),
- );
-
- /**
- * comparision wildcards
- * @var array
- * @access protected
- */
- var $wildcards = array('%', '_');
-
- /**
- * column alias keyword
- * @var string
- * @access protected
- */
- var $as_keyword = ' AS ';
-
- /**
- * warnings
- * @var array
- * @access protected
- */
- var $warnings = array();
-
- /**
- * string with the debugging information
- * @var string
- * @access public
- */
- var $debug_output = '';
-
- /**
- * determine if there is an open transaction
- * @var bool
- * @access protected
- */
- var $in_transaction = false;
-
- /**
- * the smart transaction nesting depth
- * @var int
- * @access protected
- */
- var $nested_transaction_counter = null;
-
- /**
- * the first error that occured inside a nested transaction
- * @var MDB2_Error|bool
- * @access protected
- */
- var $has_transaction_error = false;
-
- /**
- * result offset used in the next query
- * @var int
- * @access protected
- */
- var $offset = 0;
-
- /**
- * result limit used in the next query
- * @var int
- * @access protected
- */
- var $limit = 0;
-
- /**
- * Database backend used in PHP (mysql, odbc etc.)
- * @var string
- * @access public
- */
- var $phptype;
-
- /**
- * Database used with regards to SQL syntax etc.
- * @var string
- * @access public
- */
- var $dbsyntax;
-
- /**
- * the last query sent to the driver
- * @var string
- * @access public
- */
- var $last_query;
-
- /**
- * the default fetchmode used
- * @var int
- * @access protected
- */
- var $fetchmode = MDB2_FETCHMODE_ORDERED;
-
- /**
- * array of module instances
- * @var array
- * @access protected
- */
- var $modules = array();
-
- /**
- * determines of the PHP4 destructor emulation has been enabled yet
- * @var array
- * @access protected
- */
- var $destructor_registered = true;
-
- // }}}
- // {{{ constructor: function __construct()
-
- /**
- * Constructor
- */
- function __construct()
- {
- end($GLOBALS['_MDB2_databases']);
- $db_index = key($GLOBALS['_MDB2_databases']) + 1;
- $GLOBALS['_MDB2_databases'][$db_index] = &$this;
- $this->db_index = $db_index;
- }
-
- // }}}
- // {{{ function MDB2_Driver_Common()
-
- /**
- * PHP 4 Constructor
- */
- function MDB2_Driver_Common()
- {
- $this->destructor_registered = false;
- $this->__construct();
- }
-
- // }}}
- // {{{ destructor: function __destruct()
-
- /**
- * Destructor
- */
- function __destruct()
- {
- $this->disconnect(false);
- }
-
- // }}}
- // {{{ function free()
-
- /**
- * Free the internal references so that the instance can be destroyed
- *
- * @return bool true on success, false if result is invalid
- *
- * @access public
- */
- function free()
- {
- unset($GLOBALS['_MDB2_databases'][$this->db_index]);
- unset($this->db_index);
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function __toString()
-
- /**
- * String conversation
- *
- * @return string representation of the object
- *
- * @access public
- */
- function __toString()
- {
- $info = get_class($this);
- $info.= ': (phptype = '.$this->phptype.', dbsyntax = '.$this->dbsyntax.')';
- if ($this->connection) {
- $info.= ' [connected]';
- }
- return $info;
- }
-
- // }}}
- // {{{ function errorInfo($error = null)
-
- /**
- * This method is used to collect information about an error
- *
- * @param mixed error code or resource
- *
- * @return array with MDB2 errorcode, native error code, native message
- *
- * @access public
- */
- function errorInfo($error = null)
- {
- return array($error, null, null);
- }
-
- // }}}
- // {{{ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null)
-
- /**
- * This method is used to communicate an error and invoke error
- * callbacks etc. Basically a wrapper for PEAR::raiseError
- * without the message string.
- *
- * @param mixed integer error code, or a PEAR error object (all other
- * parameters are ignored if this parameter is an object
- * @param int error mode, see PEAR_Error docs
- * @param mixed If error mode is PEAR_ERROR_TRIGGER, this is the
- * error level (E_USER_NOTICE etc). If error mode is
- * PEAR_ERROR_CALLBACK, this is the callback function,
- * either as a function name, or as an array of an
- * object and method name. For other error modes this
- * parameter is ignored.
- * @param string Extra debug information. Defaults to the last
- * query and native error code.
- * @param string name of the method that triggered the error
- *
- * @return PEAR_Error instance of a PEAR Error object
- *
- * @access public
- * @see PEAR_Error
- */
- function &raiseError($code = null, $mode = null, $options = null, $userinfo = null, $method = null)
- {
- $userinfo = "[Error message: $userinfo]\n";
- // The error is yet a MDB2 error object
- if (PEAR::isError($code)) {
- // because we use the static PEAR::raiseError, our global
- // handler should be used if it is set
- if (is_null($mode) && !empty($this->_default_error_mode)) {
- $mode = $this->_default_error_mode;
- $options = $this->_default_error_options;
- }
- if (is_null($userinfo)) {
- $userinfo = $code->getUserinfo();
- }
- $code = $code->getCode();
- } elseif ($code == MDB2_ERROR_NOT_FOUND) {
- // extension not loaded: don't call $this->errorInfo() or the script
- // will die
- } elseif (isset($this->connection)) {
- if (!empty($this->last_query)) {
- $userinfo.= "[Last executed query: {$this->last_query}]\n";
- }
- $native_errno = $native_msg = null;
- list($code, $native_errno, $native_msg) = $this->errorInfo($code);
- if (!is_null($native_errno) && $native_errno !== '') {
- $userinfo.= "[Native code: $native_errno]\n";
- }
- if (!is_null($native_msg) && $native_msg !== '') {
- $userinfo.= "[Native message: ". strip_tags($native_msg) ."]\n";
- }
- if (!is_null($method)) {
- $userinfo = $method.': '.$userinfo;
- }
- }
-
- $err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true);
- if ($err->getMode() !== PEAR_ERROR_RETURN
- && isset($this->nested_transaction_counter) && !$this->has_transaction_error) {
- $this->has_transaction_error =& $err;
- }
- return $err;
- }
-
- // }}}
- // {{{ function resetWarnings()
-
- /**
- * reset the warning array
- *
- * @return void
- *
- * @access public
- */
- function resetWarnings()
- {
- $this->warnings = array();
- }
-
- // }}}
- // {{{ function getWarnings()
-
- /**
- * Get all warnings in reverse order.
- * This means that the last warning is the first element in the array
- *
- * @return array with warnings
- *
- * @access public
- * @see resetWarnings()
- */
- function getWarnings()
- {
- return array_reverse($this->warnings);
- }
-
- // }}}
- // {{{ function setFetchMode($fetchmode, $object_class = 'stdClass')
-
- /**
- * Sets which fetch mode should be used by default on queries
- * on this connection
- *
- * @param int MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC
- * or MDB2_FETCHMODE_OBJECT
- * @param string the class name of the object to be returned
- * by the fetch methods when the
- * MDB2_FETCHMODE_OBJECT mode is selected.
- * If no class is specified by default a cast
- * to object from the assoc array row will be
- * done. There is also the possibility to use
- * and extend the 'MDB2_row' class.
- *
- * @return mixed MDB2_OK or MDB2 Error Object
- *
- * @access public
- * @see MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC, MDB2_FETCHMODE_OBJECT
- */
- function setFetchMode($fetchmode, $object_class = 'stdClass')
- {
- switch ($fetchmode) {
- case MDB2_FETCHMODE_OBJECT:
- $this->options['fetch_class'] = $object_class;
- case MDB2_FETCHMODE_ORDERED:
- case MDB2_FETCHMODE_ASSOC:
- $this->fetchmode = $fetchmode;
- break;
- default:
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'invalid fetchmode mode', __FUNCTION__);
- }
-
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function setOption($option, $value)
-
- /**
- * set the option for the db class
- *
- * @param string option name
- * @param mixed value for the option
- *
- * @return mixed MDB2_OK or MDB2 Error Object
- *
- * @access public
- */
- function setOption($option, $value)
- {
- if (array_key_exists($option, $this->options)) {
- $this->options[$option] = $value;
- return MDB2_OK;
- }
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- "unknown option $option", __FUNCTION__);
- }
-
- // }}}
- // {{{ function getOption($option)
-
- /**
- * Returns the value of an option
- *
- * @param string option name
- *
- * @return mixed the option value or error object
- *
- * @access public
- */
- function getOption($option)
- {
- if (array_key_exists($option, $this->options)) {
- return $this->options[$option];
- }
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- "unknown option $option", __FUNCTION__);
- }
-
- // }}}
- // {{{ function debug($message, $scope = '', $is_manip = null)
-
- /**
- * set a debug message
- *
- * @param string message that should be appended to the debug variable
- * @param string usually the method name that triggered the debug call:
- * for example 'query', 'prepare', 'execute', 'parameters',
- * 'beginTransaction', 'commit', 'rollback'
- * @param array contains context information about the debug() call
- * common keys are: is_manip, time, result etc.
- *
- * @return void
- *
- * @access public
- */
- function debug($message, $scope = '', $context = array())
- {
- if ($this->options['debug'] && $this->options['debug_handler']) {
- if (!$this->options['debug_expanded_output']) {
- if (!empty($context['when']) && $context['when'] !== 'pre') {
- return null;
- }
- $context = empty($context['is_manip']) ? false : $context['is_manip'];
- }
- return call_user_func_array($this->options['debug_handler'], array(&$this, $scope, $message, $context));
- }
- return null;
- }
-
- // }}}
- // {{{ function getDebugOutput()
-
- /**
- * output debug info
- *
- * @return string content of the debug_output class variable
- *
- * @access public
- */
- function getDebugOutput()
- {
- return $this->debug_output;
- }
-
- // }}}
- // {{{ function escape($text)
-
- /**
- * Quotes a string so it can be safely used in a query. It will quote
- * the text so it can safely be used within a query.
- *
- * @param string the input string to quote
- * @param bool escape wildcards
- *
- * @return string quoted string
- *
- * @access public
- */
- function escape($text, $escape_wildcards = false)
- {
- if ($escape_wildcards) {
- $text = $this->escapePattern($text);
- }
-
- $text = str_replace($this->string_quoting['end'], $this->string_quoting['escape'] . $this->string_quoting['end'], $text);
- return $text;
- }
-
- // }}}
- // {{{ function escapePattern($text)
-
- /**
- * Quotes pattern (% and _) characters in a string)
- *
- * @param string the input string to quote
- *
- * @return string quoted string
- *
- * @access public
- */
- function escapePattern($text)
- {
- if ($this->string_quoting['escape_pattern']) {
- $text = str_replace($this->string_quoting['escape_pattern'], $this->string_quoting['escape_pattern'] . $this->string_quoting['escape_pattern'], $text);
- foreach ($this->wildcards as $wildcard) {
- $text = str_replace($wildcard, $this->string_quoting['escape_pattern'] . $wildcard, $text);
- }
- }
- return $text;
- }
-
- // }}}
- // {{{ function quoteIdentifier($str, $check_option = false)
-
- /**
- * Quote a string so it can be safely used as a table or column name
- *
- * Delimiting style depends on which database driver is being used.
- *
- * NOTE: just because you CAN use delimited identifiers doesn't mean
- * you SHOULD use them. In general, they end up causing way more
- * problems than they solve.
- *
- * NOTE: if you have table names containing periods, don't use this method
- * (@see bug #11906)
- *
- * Portability is broken by using the following characters inside
- * delimited identifiers:
- * + backtick (<kbd>`</kbd>) -- due to MySQL
- * + double quote (<kbd>"</kbd>) -- due to Oracle
- * + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access
- *
- * Delimited identifiers are known to generally work correctly under
- * the following drivers:
- * + mssql
- * + mysql
- * + mysqli
- * + oci8
- * + pgsql
- * + sqlite
- *
- * InterBase doesn't seem to be able to use delimited identifiers
- * via PHP 4. They work fine under PHP 5.
- *
- * @param string identifier name to be quoted
- * @param bool check the 'quote_identifier' option
- *
- * @return string quoted identifier string
- *
- * @access public
- */
- function quoteIdentifier($str, $check_option = false)
- {
- if ($check_option && !$this->options['quote_identifier']) {
- return $str;
- }
- $str = str_replace($this->identifier_quoting['end'], $this->identifier_quoting['escape'] . $this->identifier_quoting['end'], $str);
- $parts = explode('.', $str);
- foreach (array_keys($parts) as $k) {
- $parts[$k] = $this->identifier_quoting['start'] . $parts[$k] . $this->identifier_quoting['end'];
- }
- return implode('.', $parts);
- }
-
- // }}}
- // {{{ function getAsKeyword()
-
- /**
- * Gets the string to alias column
- *
- * @return string to use when aliasing a column
- */
- function getAsKeyword()
- {
- return $this->as_keyword;
- }
-
- // }}}
- // {{{ function getConnection()
-
- /**
- * Returns a native connection
- *
- * @return mixed a valid MDB2 connection object,
- * or a MDB2 error object on error
- *
- * @access public
- */
- function getConnection()
- {
- $result = $this->connect();
- if (PEAR::isError($result)) {
- return $result;
- }
- return $this->connection;
- }
-
- // }}}
- // {{{ function _fixResultArrayValues(&$row, $mode)
-
- /**
- * Do all necessary conversions on result arrays to fix DBMS quirks
- *
- * @param array the array to be fixed (passed by reference)
- * @param array bit-wise addition of the required portability modes
- *
- * @return void
- *
- * @access protected
- */
- function _fixResultArrayValues(&$row, $mode)
- {
- switch ($mode) {
- case MDB2_PORTABILITY_EMPTY_TO_NULL:
- foreach ($row as $key => $value) {
- if ($value === '') {
- $row[$key] = null;
- }
- }
- break;
- case MDB2_PORTABILITY_RTRIM:
- foreach ($row as $key => $value) {
- if (is_string($value)) {
- $row[$key] = rtrim($value);
- }
- }
- break;
- case MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES:
- $tmp_row = array();
- foreach ($row as $key => $value) {
- $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
- }
- $row = $tmp_row;
- break;
- case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL):
- foreach ($row as $key => $value) {
- if ($value === '') {
- $row[$key] = null;
- } elseif (is_string($value)) {
- $row[$key] = rtrim($value);
- }
- }
- break;
- case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
- $tmp_row = array();
- foreach ($row as $key => $value) {
- if (is_string($value)) {
- $value = rtrim($value);
- }
- $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
- }
- $row = $tmp_row;
- break;
- case (MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
- $tmp_row = array();
- foreach ($row as $key => $value) {
- if ($value === '') {
- $value = null;
- }
- $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
- }
- $row = $tmp_row;
- break;
- case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES):
- $tmp_row = array();
- foreach ($row as $key => $value) {
- if ($value === '') {
- $value = null;
- } elseif (is_string($value)) {
- $value = rtrim($value);
- }
- $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value;
- }
- $row = $tmp_row;
- break;
- }
- }
-
- // }}}
- // {{{ function &loadModule($module, $property = null, $phptype_specific = null)
-
- /**
- * loads a module
- *
- * @param string name of the module that should be loaded
- * (only used for error messages)
- * @param string name of the property into which the class will be loaded
- * @param bool if the class to load for the module is specific to the
- * phptype
- *
- * @return object on success a reference to the given module is returned
- * and on failure a PEAR error
- *
- * @access public
- */
- function &loadModule($module, $property = null, $phptype_specific = null)
- {
- if (!$property) {
- $property = strtolower($module);
- }
-
- if (!isset($this->{$property})) {
- $version = $phptype_specific;
- if ($phptype_specific !== false) {
- $version = true;
- $class_name = 'MDB2_Driver_'.$module.'_'.$this->phptype;
- $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
- }
- if ($phptype_specific === false
- || (!MDB2::classExists($class_name) && !MDB2::fileExists($file_name))
- ) {
- $version = false;
- $class_name = 'MDB2_'.$module;
- $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php';
- }
-
- $err = MDB2::loadClass($class_name, $this->getOption('debug'));
- if (PEAR::isError($err)) {
- return $err;
- }
-
- // load module in a specific version
- if ($version) {
- if (method_exists($class_name, 'getClassName')) {
- $class_name_new = call_user_func(array($class_name, 'getClassName'), $this->db_index);
- if ($class_name != $class_name_new) {
- $class_name = $class_name_new;
- $err = MDB2::loadClass($class_name, $this->getOption('debug'));
- if (PEAR::isError($err)) {
- return $err;
- }
- }
- }
- }
-
- if (!MDB2::classExists($class_name)) {
- $err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null,
- "unable to load module '$module' into property '$property'", __FUNCTION__);
- return $err;
- }
- $this->{$property} = new $class_name($this->db_index);
- $this->modules[$module] =& $this->{$property};
- if ($version) {
- // this will be used in the connect method to determine if the module
- // needs to be loaded with a different version if the server
- // version changed in between connects
- $this->loaded_version_modules[] = $property;
- }
- }
-
- return $this->{$property};
- }
-
- // }}}
- // {{{ function __call($method, $params)
-
- /**
- * Calls a module method using the __call magic method
- *
- * @param string Method name.
- * @param array Arguments.
- *
- * @return mixed Returned value.
- */
- function __call($method, $params)
- {
- $module = null;
- if (preg_match('/^([a-z]+)([A-Z])(.*)$/', $method, $match)
- && isset($this->options['modules'][$match[1]])
- ) {
- $module = $this->options['modules'][$match[1]];
- $method = strtolower($match[2]).$match[3];
- if (!isset($this->modules[$module]) || !is_object($this->modules[$module])) {
- $result =& $this->loadModule($module);
- if (PEAR::isError($result)) {
- return $result;
- }
- }
- } else {
- foreach ($this->modules as $key => $foo) {
- if (is_object($this->modules[$key])
- && method_exists($this->modules[$key], $method)
- ) {
- $module = $key;
- break;
- }
- }
- }
- if (!is_null($module)) {
- return call_user_func_array(array(&$this->modules[$module], $method), $params);
- }
- trigger_error(sprintf('Call to undefined function: %s::%s().', get_class($this), $method), E_USER_ERROR);
- }
-
- // }}}
- // {{{ function beginTransaction($savepoint = null)
-
- /**
- * Start a transaction or set a savepoint.
- *
- * @param string name of a savepoint to set
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function beginTransaction($savepoint = null)
- {
- $this->debug('Starting transaction', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'transactions are not supported', __FUNCTION__);
- }
-
- // }}}
- // {{{ function commit($savepoint = null)
-
- /**
- * Commit the database changes done during a transaction that is in
- * progress or release a savepoint. This function may only be called when
- * auto-committing is disabled, otherwise it will fail. Therefore, a new
- * transaction is implicitly started after committing the pending changes.
- *
- * @param string name of a savepoint to release
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function commit($savepoint = null)
- {
- $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'commiting transactions is not supported', __FUNCTION__);
- }
-
- // }}}
- // {{{ function rollback($savepoint = null)
-
- /**
- * Cancel any database changes done during a transaction or since a specific
- * savepoint that is in progress. This function may only be called when
- * auto-committing is disabled, otherwise it will fail. Therefore, a new
- * transaction is implicitly started after canceling the pending changes.
- *
- * @param string name of a savepoint to rollback to
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function rollback($savepoint = null)
- {
- $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'rolling back transactions is not supported', __FUNCTION__);
- }
-
- // }}}
- // {{{ function inTransaction($ignore_nested = false)
-
- /**
- * If a transaction is currently open.
- *
- * @param bool if the nested transaction count should be ignored
- * @return int|bool - an integer with the nesting depth is returned if a
- * nested transaction is open
- * - true is returned for a normal open transaction
- * - false is returned if no transaction is open
- *
- * @access public
- */
- function inTransaction($ignore_nested = false)
- {
- if (!$ignore_nested && isset($this->nested_transaction_counter)) {
- return $this->nested_transaction_counter;
- }
- return $this->in_transaction;
- }
-
- // }}}
- // {{{ function setTransactionIsolation($isolation)
-
- /**
- * Set the transacton isolation level.
- *
- * @param string standard isolation level
- * READ UNCOMMITTED (allows dirty reads)
- * READ COMMITTED (prevents dirty reads)
- * REPEATABLE READ (prevents nonrepeatable reads)
- * SERIALIZABLE (prevents phantom reads)
- * @param array some transaction options:
- * 'wait' => 'WAIT' | 'NO WAIT'
- * 'rw' => 'READ WRITE' | 'READ ONLY'
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- * @since 2.1.1
- */
- function setTransactionIsolation($isolation, $options = array())
- {
- $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'isolation level setting is not supported', __FUNCTION__);
- }
-
- // }}}
- // {{{ function beginNestedTransaction($savepoint = false)
-
- /**
- * Start a nested transaction.
- *
- * @return mixed MDB2_OK on success/savepoint name, a MDB2 error on failure
- *
- * @access public
- * @since 2.1.1
- */
- function beginNestedTransaction()
- {
- if ($this->in_transaction) {
- ++$this->nested_transaction_counter;
- $savepoint = sprintf($this->options['savepoint_format'], $this->nested_transaction_counter);
- if ($this->supports('savepoints') && $savepoint) {
- return $this->beginTransaction($savepoint);
- }
- return MDB2_OK;
- }
- $this->has_transaction_error = false;
- $result = $this->beginTransaction();
- $this->nested_transaction_counter = 1;
- return $result;
- }
-
- // }}}
- // {{{ function completeNestedTransaction($force_rollback = false, $release = false)
-
- /**
- * Finish a nested transaction by rolling back if an error occured or
- * committing otherwise.
- *
- * @param bool if the transaction should be rolled back regardless
- * even if no error was set within the nested transaction
- * @return mixed MDB_OK on commit/counter decrementing, false on rollback
- * and a MDB2 error on failure
- *
- * @access public
- * @since 2.1.1
- */
- function completeNestedTransaction($force_rollback = false)
- {
- if ($this->nested_transaction_counter > 1) {
- $savepoint = sprintf($this->options['savepoint_format'], $this->nested_transaction_counter);
- if ($this->supports('savepoints') && $savepoint) {
- if ($force_rollback || $this->has_transaction_error) {
- $result = $this->rollback($savepoint);
- if (!PEAR::isError($result)) {
- $result = false;
- $this->has_transaction_error = false;
- }
- } else {
- $result = $this->commit($savepoint);
- }
- } else {
- $result = MDB2_OK;
- }
- --$this->nested_transaction_counter;
- return $result;
- }
-
- $this->nested_transaction_counter = null;
- $result = MDB2_OK;
-
- // transaction has not yet been rolled back
- if ($this->in_transaction) {
- if ($force_rollback || $this->has_transaction_error) {
- $result = $this->rollback();
- if (!PEAR::isError($result)) {
- $result = false;
- }
- } else {
- $result = $this->commit();
- }
- }
- $this->has_transaction_error = false;
- return $result;
- }
-
- // }}}
- // {{{ function failNestedTransaction($error = null, $immediately = false)
-
- /**
- * Force setting nested transaction to failed.
- *
- * @param mixed value to return in getNestededTransactionError()
- * @param bool if the transaction should be rolled back immediately
- * @return bool MDB2_OK
- *
- * @access public
- * @since 2.1.1
- */
- function failNestedTransaction($error = null, $immediately = false)
- {
- if (is_null($error)) {
- $error = $this->has_transaction_error ? $this->has_transaction_error : true;
- } elseif (!$error) {
- $error = true;
- }
- $this->has_transaction_error = $error;
- if (!$immediately) {
- return MDB2_OK;
- }
- return $this->rollback();
- }
-
- // }}}
- // {{{ function getNestedTransactionError()
-
- /**
- * The first error that occured since the transaction start.
- *
- * @return MDB2_Error|bool MDB2 error object if an error occured or false.
- *
- * @access public
- * @since 2.1.1
- */
- function getNestedTransactionError()
- {
- return $this->has_transaction_error;
- }
-
- // }}}
- // {{{ connect()
-
- /**
- * Connect to the database
- *
- * @return true on success, MDB2 Error Object on failure
- */
- function connect()
- {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ databaseExists()
-
- /**
- * check if given database name is exists?
- *
- * @param string $name name of the database that should be checked
- *
- * @return mixed true/false on success, a MDB2 error on failure
- * @access public
- */
- function databaseExists($name)
- {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ setCharset($charset, $connection = null)
-
- /**
- * Set the charset on the current connection
- *
- * @param string charset
- * @param resource connection handle
- *
- * @return true on success, MDB2 Error Object on failure
- */
- function setCharset($charset, $connection = null)
- {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function disconnect($force = true)
-
- /**
- * Log out and disconnect from the database.
- *
- * @param bool if the disconnect should be forced even if the
- * connection is opened persistently
- *
- * @return mixed true on success, false if not connected and error
- * object on error
- *
- * @access public
- */
- function disconnect($force = true)
- {
- $this->connection = 0;
- $this->connected_dsn = array();
- $this->connected_database_name = '';
- $this->opened_persistent = null;
- $this->connected_server_info = '';
- $this->in_transaction = null;
- $this->nested_transaction_counter = null;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function setDatabase($name)
-
- /**
- * Select a different database
- *
- * @param string name of the database that should be selected
- *
- * @return string name of the database previously connected to
- *
- * @access public
- */
- function setDatabase($name)
- {
- $previous_database_name = (isset($this->database_name)) ? $this->database_name : '';
- $this->database_name = $name;
- if (!empty($this->connected_database_name) && ($this->connected_database_name != $this->database_name)) {
- $this->disconnect(false);
- }
- return $previous_database_name;
- }
-
- // }}}
- // {{{ function getDatabase()
-
- /**
- * Get the current database
- *
- * @return string name of the database
- *
- * @access public
- */
- function getDatabase()
- {
- return $this->database_name;
- }
-
- // }}}
- // {{{ function setDSN($dsn)
-
- /**
- * set the DSN
- *
- * @param mixed DSN string or array
- *
- * @return MDB2_OK
- *
- * @access public
- */
- function setDSN($dsn)
- {
- $dsn_default = $GLOBALS['_MDB2_dsninfo_default'];
- $dsn = MDB2::parseDSN($dsn);
- if (array_key_exists('database', $dsn)) {
- $this->database_name = $dsn['database'];
- unset($dsn['database']);
- }
- $this->dsn = array_merge($dsn_default, $dsn);
- return $this->disconnect(false);
- }
-
- // }}}
- // {{{ function getDSN($type = 'string', $hidepw = false)
-
- /**
- * return the DSN as a string
- *
- * @param string format to return ("array", "string")
- * @param string string to hide the password with
- *
- * @return mixed DSN in the chosen type
- *
- * @access public
- */
- function getDSN($type = 'string', $hidepw = false)
- {
- $dsn = array_merge($GLOBALS['_MDB2_dsninfo_default'], $this->dsn);
- $dsn['phptype'] = $this->phptype;
- $dsn['database'] = $this->database_name;
- if ($hidepw) {
- $dsn['password'] = $hidepw;
- }
- switch ($type) {
- // expand to include all possible options
- case 'string':
- $dsn = $dsn['phptype'].
- ($dsn['dbsyntax'] ? ('('.$dsn['dbsyntax'].')') : '').
- '://'.$dsn['username'].':'.
- $dsn['password'].'@'.$dsn['hostspec'].
- ($dsn['port'] ? (':'.$dsn['port']) : '').
- '/'.$dsn['database'];
- break;
- case 'array':
- default:
- break;
- }
- return $dsn;
- }
-
- // }}}
- // {{{ function &standaloneQuery($query, $types = null, $is_manip = false)
-
- /**
- * execute a query as database administrator
- *
- * @param string the SQL query
- * @param mixed array that contains the types of the columns in
- * the result set
- * @param bool if the query is a manipulation query
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function &standaloneQuery($query, $types = null, $is_manip = false)
- {
- $offset = $this->offset;
- $limit = $this->limit;
- $this->offset = $this->limit = 0;
- $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
-
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- $result =& $this->_doQuery($query, $is_manip, $connection, false);
- if (PEAR::isError($result)) {
- return $result;
- }
-
- if ($is_manip) {
- $affected_rows = $this->_affectedRows($connection, $result);
- return $affected_rows;
- }
- $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
- return $result;
- }
-
- // }}}
- // {{{ function _modifyQuery($query, $is_manip, $limit, $offset)
-
- /**
- * Changes a query string for various DBMS specific reasons
- *
- * @param string query to modify
- * @param bool if it is a DML query
- * @param int limit the number of rows
- * @param int start reading from given offset
- *
- * @return string modified query
- *
- * @access protected
- */
- function _modifyQuery($query, $is_manip, $limit, $offset)
- {
- return $query;
- }
-
- // }}}
- // {{{ function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
-
- /**
- * Execute a query
- * @param string query
- * @param bool if the query is a manipulation query
- * @param resource connection handle
- * @param string database name
- *
- * @return result or error object
- *
- * @access protected
- */
- function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
- {
- $this->last_query = $query;
- $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
- if ($result) {
- if (PEAR::isError($result)) {
- return $result;
- }
- $query = $result;
- }
- $err =& $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- return $err;
- }
-
- // }}}
- // {{{ function _affectedRows($connection, $result = null)
-
- /**
- * Returns the number of rows affected
- *
- * @param resource result handle
- * @param resource connection handle
- *
- * @return mixed MDB2 Error Object or the number of rows affected
- *
- * @access private
- */
- function _affectedRows($connection, $result = null)
- {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function &exec($query)
-
- /**
- * Execute a manipulation query to the database and return the number of affected rows
- *
- * @param string the SQL query
- *
- * @return mixed number of affected rows on success, a MDB2 error on failure
- *
- * @access public
- */
- function &exec($query)
- {
- $offset = $this->offset;
- $limit = $this->limit;
- $this->offset = $this->limit = 0;
- $query = $this->_modifyQuery($query, true, $limit, $offset);
-
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- $result =& $this->_doQuery($query, true, $connection, $this->database_name);
- if (PEAR::isError($result)) {
- return $result;
- }
-
- $affectedRows = $this->_affectedRows($connection, $result);
- return $affectedRows;
- }
-
- // }}}
- // {{{ function &query($query, $types = null, $result_class = true, $result_wrap_class = false)
-
- /**
- * Send a query to the database and return any results
- *
- * @param string the SQL query
- * @param mixed array that contains the types of the columns in
- * the result set
- * @param mixed string which specifies which result class to use
- * @param mixed string which specifies which class to wrap results in
- *
- * @return mixed an MDB2_Result handle on success, a MDB2 error on failure
- *
- * @access public
- */
- function &query($query, $types = null, $result_class = true, $result_wrap_class = false)
- {
- $offset = $this->offset;
- $limit = $this->limit;
- $this->offset = $this->limit = 0;
- $query = $this->_modifyQuery($query, false, $limit, $offset);
-
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- $result =& $this->_doQuery($query, false, $connection, $this->database_name);
- if (PEAR::isError($result)) {
- return $result;
- }
-
- $result =& $this->_wrapResult($result, $types, $result_class, $result_wrap_class, $limit, $offset);
- return $result;
- }
-
- // }}}
- // {{{ function &_wrapResult($result, $types = array(), $result_class = true, $result_wrap_class = false, $limit = null, $offset = null)
-
- /**
- * wrap a result set into the correct class
- *
- * @param resource result handle
- * @param mixed array that contains the types of the columns in
- * the result set
- * @param mixed string which specifies which result class to use
- * @param mixed string which specifies which class to wrap results in
- * @param string number of rows to select
- * @param string first row to select
- *
- * @return mixed an MDB2_Result, a MDB2 error on failure
- *
- * @access protected
- */
- function &_wrapResult($result, $types = array(), $result_class = true,
- $result_wrap_class = false, $limit = null, $offset = null)
- {
- if ($types === true) {
- if ($this->supports('result_introspection')) {
- $this->loadModule('Reverse', null, true);
- $tableInfo = $this->reverse->tableInfo($result);
- if (PEAR::isError($tableInfo)) {
- return $tableInfo;
- }
- $types = array();
- foreach ($tableInfo as $field) {
- $types[] = $field['mdb2type'];
- }
- } else {
- $types = null;
- }
- }
-
- if ($result_class === true) {
- $result_class = $this->options['result_buffering']
- ? $this->options['buffered_result_class'] : $this->options['result_class'];
- }
-
- if ($result_class) {
- $class_name = sprintf($result_class, $this->phptype);
- if (!MDB2::classExists($class_name)) {
- $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'result class does not exist '.$class_name, __FUNCTION__);
- return $err;
- }
- $result =& new $class_name($this, $result, $limit, $offset);
- if (!MDB2::isResultCommon($result)) {
- $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'result class is not extended from MDB2_Result_Common', __FUNCTION__);
- return $err;
- }
- if (!empty($types)) {
- $err = $result->setResultTypes($types);
- if (PEAR::isError($err)) {
- $result->free();
- return $err;
- }
- }
- }
- if ($result_wrap_class === true) {
- $result_wrap_class = $this->options['result_wrap_class'];
- }
- if ($result_wrap_class) {
- if (!MDB2::classExists($result_wrap_class)) {
- $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'result wrap class does not exist '.$result_wrap_class, __FUNCTION__);
- return $err;
- }
- $result = new $result_wrap_class($result, $this->fetchmode);
- }
- return $result;
- }
-
- // }}}
- // {{{ function getServerVersion($native = false)
-
- /**
- * return version information about the server
- *
- * @param bool determines if the raw version string should be returned
- *
- * @return mixed array with version information or row string
- *
- * @access public
- */
- function getServerVersion($native = false)
- {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function setLimit($limit, $offset = null)
-
- /**
- * set the range of the next query
- *
- * @param string number of rows to select
- * @param string first row to select
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function setLimit($limit, $offset = null)
- {
- if (!$this->supports('limit_queries')) {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'limit is not supported by this driver', __FUNCTION__);
- }
- $limit = (int)$limit;
- if ($limit < 0) {
- return $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
- 'it was not specified a valid selected range row limit', __FUNCTION__);
- }
- $this->limit = $limit;
- if (!is_null($offset)) {
- $offset = (int)$offset;
- if ($offset < 0) {
- return $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
- 'it was not specified a valid first selected range row', __FUNCTION__);
- }
- $this->offset = $offset;
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function subSelect($query, $type = false)
-
- /**
- * simple subselect emulation: leaves the query untouched for all RDBMS
- * that support subselects
- *
- * @param string the SQL query for the subselect that may only
- * return a column
- * @param string determines type of the field
- *
- * @return string the query
- *
- * @access public
- */
- function subSelect($query, $type = false)
- {
- if ($this->supports('sub_selects') === true) {
- return $query;
- }
-
- if (!$this->supports('sub_selects')) {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- $col = $this->queryCol($query, $type);
- if (PEAR::isError($col)) {
- return $col;
- }
- if (!is_array($col) || count($col) == 0) {
- return 'NULL';
- }
- if ($type) {
- $this->loadModule('Datatype', null, true);
- return $this->datatype->implodeArray($col, $type);
- }
- return implode(', ', $col);
- }
-
- // }}}
- // {{{ function replace($table, $fields)
-
- /**
- * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
- * query, except that if there is already a row in the table with the same
- * key field values, the REPLACE query just updates its values instead of
- * inserting a new row.
- *
- * The REPLACE type of query does not make part of the SQL standards. Since
- * practically only MySQL and SQLite implement it natively, this type of
- * query isemulated through this method for other DBMS using standard types
- * of queries inside a transaction to assure the atomicity of the operation.
- *
- * @param string name of the table on which the REPLACE query will
- * be executed.
- * @param array associative array that describes the fields and the
- * values that will be inserted or updated in the specified table. The
- * indexes of the array are the names of all the fields of the table.
- * The values of the array are also associative arrays that describe
- * the values and other properties of the table fields.
- *
- * Here follows a list of field properties that need to be specified:
- *
- * value
- * Value to be assigned to the specified field. This value may be
- * of specified in database independent type format as this
- * function can perform the necessary datatype conversions.
- *
- * Default: this property is required unless the Null property is
- * set to 1.
- *
- * type
- * Name of the type of the field. Currently, all types MDB2
- * are supported except for clob and blob.
- *
- * Default: no type conversion
- *
- * null
- * bool property that indicates that the value for this field
- * should be set to null.
- *
- * The default value for fields missing in INSERT queries may be
- * specified the definition of a table. Often, the default value
- * is already null, but since the REPLACE may be emulated using
- * an UPDATE query, make sure that all fields of the table are
- * listed in this function argument array.
- *
- * Default: 0
- *
- * key
- * bool property that indicates that this field should be
- * handled as a primary key or at least as part of the compound
- * unique index of the table that will determine the row that will
- * updated if it exists or inserted a new row otherwise.
- *
- * This function will fail if no key field is specified or if the
- * value of a key field is set to null because fields that are
- * part of unique index they may not be null.
- *
- * Default: 0
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function replace($table, $fields)
- {
- if (!$this->supports('replace')) {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'replace query is not supported', __FUNCTION__);
- }
- $count = count($fields);
- $condition = $values = array();
- for ($colnum = 0, reset($fields); $colnum < $count; next($fields), $colnum++) {
- $name = key($fields);
- if (isset($fields[$name]['null']) && $fields[$name]['null']) {
- $value = 'NULL';
- } else {
- $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
- $value = $this->quote($fields[$name]['value'], $type);
- }
- $values[$name] = $value;
- if (isset($fields[$name]['key']) && $fields[$name]['key']) {
- if ($value === 'NULL') {
- return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
- 'key value '.$name.' may not be NULL', __FUNCTION__);
- }
- $condition[] = $this->quoteIdentifier($name, true) . '=' . $value;
- }
- }
- if (empty($condition)) {
- return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
- 'not specified which fields are keys', __FUNCTION__);
- }
-
- $result = null;
- $in_transaction = $this->in_transaction;
- if (!$in_transaction && PEAR::isError($result = $this->beginTransaction())) {
- return $result;
- }
-
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- $condition = ' WHERE '.implode(' AND ', $condition);
- $query = 'DELETE FROM ' . $this->quoteIdentifier($table, true) . $condition;
- $result =& $this->_doQuery($query, true, $connection);
- if (!PEAR::isError($result)) {
- $affected_rows = $this->_affectedRows($connection, $result);
- $insert = '';
- foreach ($values as $key => $value) {
- $insert .= ($insert?', ':'') . $this->quoteIdentifier($key, true);
- }
- $values = implode(', ', $values);
- $query = 'INSERT INTO '. $this->quoteIdentifier($table, true) . "($insert) VALUES ($values)";
- $result =& $this->_doQuery($query, true, $connection);
- if (!PEAR::isError($result)) {
- $affected_rows += $this->_affectedRows($connection, $result);;
- }
- }
-
- if (!$in_transaction) {
- if (PEAR::isError($result)) {
- $this->rollback();
- } else {
- $result = $this->commit();
- }
- }
-
- if (PEAR::isError($result)) {
- return $result;
- }
-
- return $affected_rows;
- }
-
- // }}}
- // {{{ function &prepare($query, $types = null, $result_types = null, $lobs = array())
-
- /**
- * Prepares a query for multiple execution with execute().
- * With some database backends, this is emulated.
- * prepare() requires a generic query as string like
- * 'INSERT INTO numbers VALUES(?,?)' or
- * 'INSERT INTO numbers VALUES(:foo,:bar)'.
- * The ? and :name and are placeholders which can be set using
- * bindParam() and the query can be sent off using the execute() method.
- * The allowed format for :name can be set with the 'bindname_format' option.
- *
- * @param string the query to prepare
- * @param mixed array that contains the types of the placeholders
- * @param mixed array that contains the types of the columns in
- * the result set or MDB2_PREPARE_RESULT, if set to
- * MDB2_PREPARE_MANIP the query is handled as a manipulation query
- * @param mixed key (field) value (parameter) pair for all lob placeholders
- *
- * @return mixed resource handle for the prepared query on success,
- * a MDB2 error on failure
- *
- * @access public
- * @see bindParam, execute
- */
- function &prepare($query, $types = null, $result_types = null, $lobs = array())
- {
- $is_manip = ($result_types === MDB2_PREPARE_MANIP);
- $offset = $this->offset;
- $limit = $this->limit;
- $this->offset = $this->limit = 0;
- $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
- if ($result) {
- if (PEAR::isError($result)) {
- return $result;
- }
- $query = $result;
- }
- $placeholder_type_guess = $placeholder_type = null;
- $question = '?';
- $colon = ':';
- $positions = array();
- $position = 0;
+<?php +// vim: set et ts=4 sw=4 fdm=marker: +// +----------------------------------------------------------------------+ +// | PHP versions 4 and 5 | +// +----------------------------------------------------------------------+ +// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, | +// | Stig. S. Bakken, Lukas Smith | +// | All rights reserved. | +// +----------------------------------------------------------------------+ +// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | +// | API as well as database abstraction for PHP applications. | +// | This LICENSE is in the BSD license style. | +// | | +// | Redistribution and use in source and binary forms, with or without | +// | modification, are permitted provided that the following conditions | +// | are met: | +// | | +// | Redistributions of source code must retain the above copyright | +// | notice, this list of conditions and the following disclaimer. | +// | | +// | Redistributions in binary form must reproduce the above copyright | +// | notice, this list of conditions and the following disclaimer in the | +// | documentation and/or other materials provided with the distribution. | +// | | +// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | +// | Lukas Smith nor the names of his contributors may be used to endorse | +// | or promote products derived from this software without specific prior| +// | written permission. | +// | | +// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | +// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | +// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | +// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | +// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | +// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | +// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| +// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | +// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | +// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| +// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | +// | POSSIBILITY OF SUCH DAMAGE. | +// +----------------------------------------------------------------------+ +// | Author: Lukas Smith <smith@pooteeweet.org> | +// +----------------------------------------------------------------------+ +// +// $Id: MDB2.php,v 1.318 2008/03/08 14:18:38 quipo Exp $ +// + +/** + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ + +require_once 'PEAR.php'; + +// {{{ Error constants + +/** + * The method mapErrorCode in each MDB2_dbtype implementation maps + * native error codes to one of these. + * + * If you add an error code here, make sure you also add a textual + * version of it in MDB2::errorMessage(). + */ + +define('MDB2_OK', true); +define('MDB2_ERROR', -1); +define('MDB2_ERROR_SYNTAX', -2); +define('MDB2_ERROR_CONSTRAINT', -3); +define('MDB2_ERROR_NOT_FOUND', -4); +define('MDB2_ERROR_ALREADY_EXISTS', -5); +define('MDB2_ERROR_UNSUPPORTED', -6); +define('MDB2_ERROR_MISMATCH', -7); +define('MDB2_ERROR_INVALID', -8); +define('MDB2_ERROR_NOT_CAPABLE', -9); +define('MDB2_ERROR_TRUNCATED', -10); +define('MDB2_ERROR_INVALID_NUMBER', -11); +define('MDB2_ERROR_INVALID_DATE', -12); +define('MDB2_ERROR_DIVZERO', -13); +define('MDB2_ERROR_NODBSELECTED', -14); +define('MDB2_ERROR_CANNOT_CREATE', -15); +define('MDB2_ERROR_CANNOT_DELETE', -16); +define('MDB2_ERROR_CANNOT_DROP', -17); +define('MDB2_ERROR_NOSUCHTABLE', -18); +define('MDB2_ERROR_NOSUCHFIELD', -19); +define('MDB2_ERROR_NEED_MORE_DATA', -20); +define('MDB2_ERROR_NOT_LOCKED', -21); +define('MDB2_ERROR_VALUE_COUNT_ON_ROW', -22); +define('MDB2_ERROR_INVALID_DSN', -23); +define('MDB2_ERROR_CONNECT_FAILED', -24); +define('MDB2_ERROR_EXTENSION_NOT_FOUND',-25); +define('MDB2_ERROR_NOSUCHDB', -26); +define('MDB2_ERROR_ACCESS_VIOLATION', -27); +define('MDB2_ERROR_CANNOT_REPLACE', -28); +define('MDB2_ERROR_CONSTRAINT_NOT_NULL',-29); +define('MDB2_ERROR_DEADLOCK', -30); +define('MDB2_ERROR_CANNOT_ALTER', -31); +define('MDB2_ERROR_MANAGER', -32); +define('MDB2_ERROR_MANAGER_PARSE', -33); +define('MDB2_ERROR_LOADMODULE', -34); +define('MDB2_ERROR_INSUFFICIENT_DATA', -35); +define('MDB2_ERROR_NO_PERMISSION', -36); + +// }}} +// {{{ Verbose constants +/** + * These are just helper constants to more verbosely express parameters to prepare() + */ + +define('MDB2_PREPARE_MANIP', false); +define('MDB2_PREPARE_RESULT', null); + +// }}} +// {{{ Fetchmode constants + +/** + * This is a special constant that tells MDB2 the user hasn't specified + * any particular get mode, so the default should be used. + */ +define('MDB2_FETCHMODE_DEFAULT', 0); + +/** + * Column data indexed by numbers, ordered from 0 and up + */ +define('MDB2_FETCHMODE_ORDERED', 1); + +/** + * Column data indexed by column names + */ +define('MDB2_FETCHMODE_ASSOC', 2); + +/** + * Column data as object properties + */ +define('MDB2_FETCHMODE_OBJECT', 3); + +/** + * For multi-dimensional results: normally the first level of arrays + * is the row number, and the second level indexed by column number or name. + * MDB2_FETCHMODE_FLIPPED switches this order, so the first level of arrays + * is the column name, and the second level the row number. + */ +define('MDB2_FETCHMODE_FLIPPED', 4); + +// }}} +// {{{ Portability mode constants + +/** + * Portability: turn off all portability features. + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_NONE', 0); + +/** + * Portability: convert names of tables and fields to case defined in the + * "field_case" option when using the query*(), fetch*() and tableInfo() methods. + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_FIX_CASE', 1); + +/** + * Portability: right trim the data output by query*() and fetch*(). + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_RTRIM', 2); + +/** + * Portability: force reporting the number of rows deleted. + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_DELETE_COUNT', 4); + +/** + * Portability: not needed in MDB2 (just left here for compatibility to DB) + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_NUMROWS', 8); + +/** + * Portability: makes certain error messages in certain drivers compatible + * with those from other DBMS's. + * + * + mysql, mysqli: change unique/primary key constraints + * MDB2_ERROR_ALREADY_EXISTS -> MDB2_ERROR_CONSTRAINT + * + * + odbc(access): MS's ODBC driver reports 'no such field' as code + * 07001, which means 'too few parameters.' When this option is on + * that code gets mapped to MDB2_ERROR_NOSUCHFIELD. + * + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_ERRORS', 16); + +/** + * Portability: convert empty values to null strings in data output by + * query*() and fetch*(). + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_EMPTY_TO_NULL', 32); + +/** + * Portability: removes database/table qualifiers from associative indexes + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES', 64); + +/** + * Portability: turn on all portability features. + * @see MDB2_Driver_Common::setOption() + */ +define('MDB2_PORTABILITY_ALL', 127); + +// }}} +// {{{ Globals for class instance tracking + +/** + * These are global variables that are used to track the various class instances + */ + +$GLOBALS['_MDB2_databases'] = array(); +$GLOBALS['_MDB2_dsninfo_default'] = array( + 'phptype' => false, + 'dbsyntax' => false, + 'username' => false, + 'password' => false, + 'protocol' => false, + 'hostspec' => false, + 'port' => false, + 'socket' => false, + 'database' => false, + 'mode' => false, +); + +// }}} +// {{{ class MDB2 + +/** + * The main 'MDB2' class is simply a container class with some static + * methods for creating DB objects as well as some utility functions + * common to all parts of DB. + * + * The object model of MDB2 is as follows (indentation means inheritance): + * + * MDB2 The main MDB2 class. This is simply a utility class + * with some 'static' methods for creating MDB2 objects as + * well as common utility functions for other MDB2 classes. + * + * MDB2_Driver_Common The base for each MDB2 implementation. Provides default + * | implementations (in OO lingo virtual methods) for + * | the actual DB implementations as well as a bunch of + * | query utility functions. + * | + * +-MDB2_Driver_mysql The MDB2 implementation for MySQL. Inherits MDB2_Driver_Common. + * When calling MDB2::factory or MDB2::connect for MySQL + * connections, the object returned is an instance of this + * class. + * +-MDB2_Driver_pgsql The MDB2 implementation for PostGreSQL. Inherits MDB2_Driver_Common. + * When calling MDB2::factory or MDB2::connect for PostGreSQL + * connections, the object returned is an instance of this + * class. + * + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ +class MDB2 +{ + // {{{ function setOptions(&$db, $options) + + /** + * set option array in an exiting database object + * + * @param MDB2_Driver_Common MDB2 object + * @param array An associative array of option names and their values. + * + * @return mixed MDB2_OK or a PEAR Error object + * + * @access public + */ + function setOptions(&$db, $options) + { + if (is_array($options)) { + foreach ($options as $option => $value) { + $test = $db->setOption($option, $value); + if (PEAR::isError($test)) { + return $test; + } + } + } + return MDB2_OK; + } + + // }}} + // {{{ function classExists($classname) + + /** + * Checks if a class exists without triggering __autoload + * + * @param string classname + * + * @return bool true success and false on error + * @static + * @access public + */ + function classExists($classname) + { + if (version_compare(phpversion(), "5.0", ">=")) { + return class_exists($classname, false); + } + return class_exists($classname); + } + + // }}} + // {{{ function loadClass($class_name, $debug) + + /** + * Loads a PEAR class. + * + * @param string classname to load + * @param bool if errors should be suppressed + * + * @return mixed true success or PEAR_Error on failure + * + * @access public + */ + function loadClass($class_name, $debug) + { + if (!MDB2::classExists($class_name)) { + $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php'; + if ($debug) { + $include = include_once($file_name); + } else { + $include = @include_once($file_name); + } + if (!$include) { + if (!MDB2::fileExists($file_name)) { + $msg = "unable to find package '$class_name' file '$file_name'"; + } else { + $msg = "unable to load class '$class_name' from file '$file_name'"; + } + $err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, $msg); + return $err; + } + } + return MDB2_OK; + } + + // }}} + // {{{ function &factory($dsn, $options = false) + + /** + * Create a new MDB2 object for the specified database type + * + * IMPORTANT: In order for MDB2 to work properly it is necessary that + * you make sure that you work with a reference of the original + * object instead of a copy (this is a PHP4 quirk). + * + * For example: + * $db =& MDB2::factory($dsn); + * ^^ + * And not: + * $db = MDB2::factory($dsn); + * + * @param mixed 'data source name', see the MDB2::parseDSN + * method for a description of the dsn format. + * Can also be specified as an array of the + * format returned by MDB2::parseDSN. + * @param array An associative array of option names and + * their values. + * + * @return mixed a newly created MDB2 object, or false on error + * + * @access public + */ + function &factory($dsn, $options = false) + { + $dsninfo = MDB2::parseDSN($dsn); + if (empty($dsninfo['phptype'])) { + $err =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, + null, null, 'no RDBMS driver specified'); + return $err; + } + $class_name = 'MDB2_Driver_'.$dsninfo['phptype']; + + $debug = (!empty($options['debug'])); + $err = MDB2::loadClass($class_name, $debug); + if (PEAR::isError($err)) { + return $err; + } + + $db =& new $class_name(); + $db->setDSN($dsninfo); + $err = MDB2::setOptions($db, $options); + if (PEAR::isError($err)) { + return $err; + } + + return $db; + } + + // }}} + // {{{ function &connect($dsn, $options = false) + + /** + * Create a new MDB2 connection object and connect to the specified + * database + * + * IMPORTANT: In order for MDB2 to work properly it is necessary that + * you make sure that you work with a reference of the original + * object instead of a copy (this is a PHP4 quirk). + * + * For example: + * $db =& MDB2::connect($dsn); + * ^^ + * And not: + * $db = MDB2::connect($dsn); + * ^^ + * + * @param mixed 'data source name', see the MDB2::parseDSN + * method for a description of the dsn format. + * Can also be specified as an array of the + * format returned by MDB2::parseDSN. + * @param array An associative array of option names and + * their values. + * + * @return mixed a newly created MDB2 connection object, or a MDB2 + * error object on error + * + * @access public + * @see MDB2::parseDSN + */ + function &connect($dsn, $options = false) + { + $db =& MDB2::factory($dsn, $options); + if (PEAR::isError($db)) { + return $db; + } + + $err = $db->connect(); + if (PEAR::isError($err)) { + $dsn = $db->getDSN('string', 'xxx'); + $db->disconnect(); + $err->addUserInfo($dsn); + return $err; + } + + return $db; + } + + // }}} + // {{{ function &singleton($dsn = null, $options = false) + + /** + * Returns a MDB2 connection with the requested DSN. + * A new MDB2 connection object is only created if no object with the + * requested DSN exists yet. + * + * IMPORTANT: In order for MDB2 to work properly it is necessary that + * you make sure that you work with a reference of the original + * object instead of a copy (this is a PHP4 quirk). + * + * For example: + * $db =& MDB2::singleton($dsn); + * ^^ + * And not: + * $db = MDB2::singleton($dsn); + * ^^ + * + * @param mixed 'data source name', see the MDB2::parseDSN + * method for a description of the dsn format. + * Can also be specified as an array of the + * format returned by MDB2::parseDSN. + * @param array An associative array of option names and + * their values. + * + * @return mixed a newly created MDB2 connection object, or a MDB2 + * error object on error + * + * @access public + * @see MDB2::parseDSN + */ + function &singleton($dsn = null, $options = false) + { + if ($dsn) { + $dsninfo = MDB2::parseDSN($dsn); + $dsninfo = array_merge($GLOBALS['_MDB2_dsninfo_default'], $dsninfo); + $keys = array_keys($GLOBALS['_MDB2_databases']); + for ($i=0, $j=count($keys); $i<$j; ++$i) { + if (isset($GLOBALS['_MDB2_databases'][$keys[$i]])) { + $tmp_dsn = $GLOBALS['_MDB2_databases'][$keys[$i]]->getDSN('array'); + if (count(array_diff_assoc($tmp_dsn, $dsninfo)) == 0) { + MDB2::setOptions($GLOBALS['_MDB2_databases'][$keys[$i]], $options); + return $GLOBALS['_MDB2_databases'][$keys[$i]]; + } + } + } + } elseif (is_array($GLOBALS['_MDB2_databases']) && reset($GLOBALS['_MDB2_databases'])) { + $db =& $GLOBALS['_MDB2_databases'][key($GLOBALS['_MDB2_databases'])]; + return $db; + } + $db =& MDB2::factory($dsn, $options); + return $db; + } + + // }}} + // {{{ function areEquals() + + /** + * It looks like there's a memory leak in array_diff() in PHP 5.1.x, + * so use this method instead. + * @see http://pear.php.net/bugs/bug.php?id=11790 + * + * @param array $arr1 + * @param array $arr2 + * @return boolean + */ + function areEquals($arr1, $arr2) + { + if (count($arr1) != count($arr2)) { + return false; + } + foreach (array_keys($arr1) as $k) { + if (!array_key_exists($k, $arr2) || $arr1[$k] != $arr2[$k]) { + return false; + } + } + return true; + } + + // }}} + // {{{ function loadFile($file) + + /** + * load a file (like 'Date') + * + * @param string name of the file in the MDB2 directory (without '.php') + * + * @return string name of the file that was included + * + * @access public + */ + function loadFile($file) + { + $file_name = 'MDB2'.DIRECTORY_SEPARATOR.$file.'.php'; + if (!MDB2::fileExists($file_name)) { + return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'unable to find: '.$file_name); + } + if (!include_once($file_name)) { + return MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'unable to load driver class: '.$file_name); + } + return $file_name; + } + + // }}} + // {{{ function apiVersion() + + /** + * Return the MDB2 API version + * + * @return string the MDB2 API version number + * + * @access public + */ + function apiVersion() + { + return '2.5.0b1'; + } + + // }}} + // {{{ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null) + + /** + * This method is used to communicate an error and invoke error + * callbacks etc. Basically a wrapper for PEAR::raiseError + * without the message string. + * + * @param mixed int error code + * + * @param int error mode, see PEAR_Error docs + * + * @param mixed If error mode is PEAR_ERROR_TRIGGER, this is the + * error level (E_USER_NOTICE etc). If error mode is + * PEAR_ERROR_CALLBACK, this is the callback function, + * either as a function name, or as an array of an + * object and method name. For other error modes this + * parameter is ignored. + * + * @param string Extra debug information. Defaults to the last + * query and native error code. + * + * @return PEAR_Error instance of a PEAR Error object + * + * @access private + * @see PEAR_Error + */ + function &raiseError($code = null, + $mode = null, + $options = null, + $userinfo = null, + $dummy1 = null, + $dummy2 = null, + $dummy3 = false) + { + $err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true); + return $err; + } + + // }}} + // {{{ function isError($data, $code = null) + + /** + * Tell whether a value is a MDB2 error. + * + * @param mixed the value to test + * @param int if is an error object, return true + * only if $code is a string and + * $db->getMessage() == $code or + * $code is an integer and $db->getCode() == $code + * + * @return bool true if parameter is an error + * + * @access public + */ + function isError($data, $code = null) + { + if (is_a($data, 'MDB2_Error')) { + if (is_null($code)) { + return true; + } elseif (is_string($code)) { + return $data->getMessage() === $code; + } else { + $code = (array)$code; + return in_array($data->getCode(), $code); + } + } + return false; + } + + // }}} + // {{{ function isConnection($value) + + /** + * Tell whether a value is a MDB2 connection + * + * @param mixed value to test + * + * @return bool whether $value is a MDB2 connection + * + * @access public + */ + function isConnection($value) + { + return is_a($value, 'MDB2_Driver_Common'); + } + + // }}} + // {{{ function isResult($value) + + /** + * Tell whether a value is a MDB2 result + * + * @param mixed value to test + * + * @return bool whether $value is a MDB2 result + * + * @access public + */ + function isResult($value) + { + return is_a($value, 'MDB2_Result'); + } + + // }}} + // {{{ function isResultCommon($value) + + /** + * Tell whether a value is a MDB2 result implementing the common interface + * + * @param mixed value to test + * + * @return bool whether $value is a MDB2 result implementing the common interface + * + * @access public + */ + function isResultCommon($value) + { + return is_a($value, 'MDB2_Result_Common'); + } + + // }}} + // {{{ function isStatement($value) + + /** + * Tell whether a value is a MDB2 statement interface + * + * @param mixed value to test + * + * @return bool whether $value is a MDB2 statement interface + * + * @access public + */ + function isStatement($value) + { + return is_a($value, 'MDB2_Statement_Common'); + } + + // }}} + // {{{ function errorMessage($value = null) + + /** + * Return a textual error message for a MDB2 error code + * + * @param int|array integer error code, + null to get the current error code-message map, + or an array with a new error code-message map + * + * @return string error message, or false if the error code was + * not recognized + * + * @access public + */ + function errorMessage($value = null) + { + static $errorMessages; + + if (is_array($value)) { + $errorMessages = $value; + return MDB2_OK; + } + + if (!isset($errorMessages)) { + $errorMessages = array( + MDB2_OK => 'no error', + MDB2_ERROR => 'unknown error', + MDB2_ERROR_ALREADY_EXISTS => 'already exists', + MDB2_ERROR_CANNOT_CREATE => 'can not create', + MDB2_ERROR_CANNOT_ALTER => 'can not alter', + MDB2_ERROR_CANNOT_REPLACE => 'can not replace', + MDB2_ERROR_CANNOT_DELETE => 'can not delete', + MDB2_ERROR_CANNOT_DROP => 'can not drop', + MDB2_ERROR_CONSTRAINT => 'constraint violation', + MDB2_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint', + MDB2_ERROR_DIVZERO => 'division by zero', + MDB2_ERROR_INVALID => 'invalid', + MDB2_ERROR_INVALID_DATE => 'invalid date or time', + MDB2_ERROR_INVALID_NUMBER => 'invalid number', + MDB2_ERROR_MISMATCH => 'mismatch', + MDB2_ERROR_NODBSELECTED => 'no database selected', + MDB2_ERROR_NOSUCHFIELD => 'no such field', + MDB2_ERROR_NOSUCHTABLE => 'no such table', + MDB2_ERROR_NOT_CAPABLE => 'MDB2 backend not capable', + MDB2_ERROR_NOT_FOUND => 'not found', + MDB2_ERROR_NOT_LOCKED => 'not locked', + MDB2_ERROR_SYNTAX => 'syntax error', + MDB2_ERROR_UNSUPPORTED => 'not supported', + MDB2_ERROR_VALUE_COUNT_ON_ROW => 'value count on row', + MDB2_ERROR_INVALID_DSN => 'invalid DSN', + MDB2_ERROR_CONNECT_FAILED => 'connect failed', + MDB2_ERROR_NEED_MORE_DATA => 'insufficient data supplied', + MDB2_ERROR_EXTENSION_NOT_FOUND=> 'extension not found', + MDB2_ERROR_NOSUCHDB => 'no such database', + MDB2_ERROR_ACCESS_VIOLATION => 'insufficient permissions', + MDB2_ERROR_LOADMODULE => 'error while including on demand module', + MDB2_ERROR_TRUNCATED => 'truncated', + MDB2_ERROR_DEADLOCK => 'deadlock detected', + MDB2_ERROR_NO_PERMISSION => 'no permission', + ); + } + + if (is_null($value)) { + return $errorMessages; + } + + if (PEAR::isError($value)) { + $value = $value->getCode(); + } + + return isset($errorMessages[$value]) ? + $errorMessages[$value] : $errorMessages[MDB2_ERROR]; + } + + // }}} + // {{{ function parseDSN($dsn) + + /** + * Parse a data source name. + * + * Additional keys can be added by appending a URI query string to the + * end of the DSN. + * + * The format of the supplied DSN is in its fullest form: + * <code> + * phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true + * </code> + * + * Most variations are allowed: + * <code> + * phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644 + * phptype://username:password@hostspec/database_name + * phptype://username:password@hostspec + * phptype://username@hostspec + * phptype://hostspec/database + * phptype://hostspec + * phptype(dbsyntax) + * phptype + * </code> + * + * @param string Data Source Name to be parsed + * + * @return array an associative array with the following keys: + * + phptype: Database backend used in PHP (mysql, odbc etc.) + * + dbsyntax: Database used with regards to SQL syntax etc. + * + protocol: Communication protocol to use (tcp, unix etc.) + * + hostspec: Host specification (hostname[:port]) + * + database: Database to use on the DBMS server + * + username: User name for login + * + password: Password for login + * + * @access public + * @author Tomas V.V.Cox <cox@idecnet.com> + */ + function parseDSN($dsn) + { + $parsed = array(); + + if (is_array($dsn)) { + $dsn = array_merge($parsed, $dsn); + if (!$dsn['dbsyntax']) { + $dsn['dbsyntax'] = $dsn['phptype']; + } + return $dsn; + } + + // Find phptype and dbsyntax + if (($pos = strpos($dsn, '://')) !== false) { + $str = substr($dsn, 0, $pos); + $dsn = substr($dsn, $pos + 3); + } else { + $str = $dsn; + $dsn = null; + } + + + // Get phptype and dbsyntax + // $str => phptype(dbsyntax) + if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) { + $parsed['phptype'] = $arr[1]; + $parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2]; + } else { + $parsed['phptype'] = $str; + $parsed['dbsyntax'] = $str; + } + + if (!count($dsn)) { + return array_merge($GLOBALS['_MDB2_dsninfo_default'], $parsed); + } + + // Get (if found): username and password + // $dsn => username:password@protocol+hostspec/database + if (($at = strrpos($dsn,'@')) !== false) { + $str = substr($dsn, 0, $at); + $dsn = substr($dsn, $at + 1); + if (($pos = strpos($str, ':')) !== false) { + $parsed['username'] = rawurldecode(substr($str, 0, $pos)); + $parsed['password'] = rawurldecode(substr($str, $pos + 1)); + } else { + $parsed['username'] = rawurldecode($str); + } + } + + // Find protocol and hostspec + + // $dsn => proto(proto_opts)/database + if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) { + $proto = $match[1]; + $proto_opts = $match[2] ? $match[2] : false; + $dsn = $match[3]; + + // $dsn => protocol+hostspec/database (old format) + } else { + if (strpos($dsn, '+') !== false) { + list($proto, $dsn) = explode('+', $dsn, 2); + } + if ( strpos($dsn, '//') === 0 + && strpos($dsn, '/', 2) !== false + && $parsed['phptype'] == 'oci8' + ) { + //oracle's "Easy Connect" syntax: + //"username/password@[//]host[:port][/service_name]" + //e.g. "scott/tiger@//mymachine:1521/oracle" + $proto_opts = $dsn; + $dsn = substr($proto_opts, strrpos($proto_opts, '/') + 1); + } elseif (strpos($dsn, '/') !== false) { + list($proto_opts, $dsn) = explode('/', $dsn, 2); + } else { + $proto_opts = $dsn; + $dsn = null; + } + } + + // process the different protocol options + $parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp'; + $proto_opts = rawurldecode($proto_opts); + if (strpos($proto_opts, ':') !== false) { + list($proto_opts, $parsed['port']) = explode(':', $proto_opts); + } + if ($parsed['protocol'] == 'tcp') { + $parsed['hostspec'] = $proto_opts; + } elseif ($parsed['protocol'] == 'unix') { + $parsed['socket'] = $proto_opts; + } + + // Get dabase if any + // $dsn => database + if ($dsn) { + // /database + if (($pos = strpos($dsn, '?')) === false) { + $parsed['database'] = $dsn; + // /database?param1=value1¶m2=value2 + } else { + $parsed['database'] = substr($dsn, 0, $pos); + $dsn = substr($dsn, $pos + 1); + if (strpos($dsn, '&') !== false) { + $opts = explode('&', $dsn); + } else { // database?param1=value1 + $opts = array($dsn); + } + foreach ($opts as $opt) { + list($key, $value) = explode('=', $opt); + if (!isset($parsed[$key])) { + // don't allow params overwrite + $parsed[$key] = rawurldecode($value); + } + } + } + } + + return array_merge($GLOBALS['_MDB2_dsninfo_default'], $parsed); + } + + // }}} + // {{{ function fileExists($file) + + /** + * Checks if a file exists in the include path + * + * @param string filename + * + * @return bool true success and false on error + * + * @access public + */ + function fileExists($file) + { + // safe_mode does notwork with is_readable() + if (!@ini_get('safe_mode')) { + $dirs = explode(PATH_SEPARATOR, ini_get('include_path')); + foreach ($dirs as $dir) { + if (is_readable($dir . DIRECTORY_SEPARATOR . $file)) { + return true; + } + } + } else { + $fp = @fopen($file, 'r', true); + if (is_resource($fp)) { + @fclose($fp); + return true; + } + } + return false; + } + // }}} +} + +// }}} +// {{{ class MDB2_Error extends PEAR_Error + +/** + * MDB2_Error implements a class for reporting portable database error + * messages. + * + * @package MDB2 + * @category Database + * @author Stig Bakken <ssb@fast.no> + */ +class MDB2_Error extends PEAR_Error +{ + // {{{ constructor: function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN, $level = E_USER_NOTICE, $debuginfo = null) + + /** + * MDB2_Error constructor. + * + * @param mixed MDB2 error code, or string with error message. + * @param int what 'error mode' to operate in + * @param int what error level to use for $mode & PEAR_ERROR_TRIGGER + * @param mixed additional debug info, such as the last query + */ + function MDB2_Error($code = MDB2_ERROR, $mode = PEAR_ERROR_RETURN, + $level = E_USER_NOTICE, $debuginfo = null, $dummy = null) + { + if (is_null($code)) { + $code = MDB2_ERROR; + } + $this->PEAR_Error('MDB2 Error: '.MDB2::errorMessage($code), $code, + $mode, $level, $debuginfo); + } + + // }}} +} + +// }}} +// {{{ class MDB2_Driver_Common extends PEAR + +/** + * MDB2_Driver_Common: Base class that is extended by each MDB2 driver + * + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ +class MDB2_Driver_Common extends PEAR +{ + // {{{ Variables (Properties) + + /** + * index of the MDB2 object within the $GLOBALS['_MDB2_databases'] array + * @var int + * @access public + */ + var $db_index = 0; + + /** + * DSN used for the next query + * @var array + * @access protected + */ + var $dsn = array(); + + /** + * DSN that was used to create the current connection + * @var array + * @access protected + */ + var $connected_dsn = array(); + + /** + * connection resource + * @var mixed + * @access protected + */ + var $connection = 0; + + /** + * if the current opened connection is a persistent connection + * @var bool + * @access protected + */ + var $opened_persistent; + + /** + * the name of the database for the next query + * @var string + * @access protected + */ + var $database_name = ''; + + /** + * the name of the database currently selected + * @var string + * @access protected + */ + var $connected_database_name = ''; + + /** + * server version information + * @var string + * @access protected + */ + var $connected_server_info = ''; + + /** + * list of all supported features of the given driver + * @var array + * @access public + */ + var $supported = array( + 'sequences' => false, + 'indexes' => false, + 'affected_rows' => false, + 'summary_functions' => false, + 'order_by_text' => false, + 'transactions' => false, + 'savepoints' => false, + 'current_id' => false, + 'limit_queries' => false, + 'LOBs' => false, + 'replace' => false, + 'sub_selects' => false, + 'triggers' => false, + 'auto_increment' => false, + 'primary_key' => false, + 'result_introspection' => false, + 'prepared_statements' => false, + 'identifier_quoting' => false, + 'pattern_escaping' => false, + 'new_link' => false, + ); + + /** + * Array of supported options that can be passed to the MDB2 instance. + * + * The options can be set during object creation, using + * MDB2::connect(), MDB2::factory() or MDB2::singleton(). The options can + * also be set after the object is created, using MDB2::setOptions() or + * MDB2_Driver_Common::setOption(). + * The list of available option includes: + * <ul> + * <li>$options['ssl'] -> boolean: determines if ssl should be used for connections</li> + * <li>$options['field_case'] -> CASE_LOWER|CASE_UPPER: determines what case to force on field/table names</li> + * <li>$options['disable_query'] -> boolean: determines if queries should be executed</li> + * <li>$options['result_class'] -> string: class used for result sets</li> + * <li>$options['buffered_result_class'] -> string: class used for buffered result sets</li> + * <li>$options['result_wrap_class'] -> string: class used to wrap result sets into</li> + * <li>$options['result_buffering'] -> boolean should results be buffered or not?</li> + * <li>$options['fetch_class'] -> string: class to use when fetch mode object is used</li> + * <li>$options['persistent'] -> boolean: persistent connection?</li> + * <li>$options['debug'] -> integer: numeric debug level</li> + * <li>$options['debug_handler'] -> string: function/method that captures debug messages</li> + * <li>$options['debug_expanded_output'] -> bool: BC option to determine if more context information should be send to the debug handler</li> + * <li>$options['default_text_field_length'] -> integer: default text field length to use</li> + * <li>$options['lob_buffer_length'] -> integer: LOB buffer length</li> + * <li>$options['log_line_break'] -> string: line-break format</li> + * <li>$options['idxname_format'] -> string: pattern for index name</li> + * <li>$options['seqname_format'] -> string: pattern for sequence name</li> + * <li>$options['savepoint_format'] -> string: pattern for auto generated savepoint names</li> + * <li>$options['statement_format'] -> string: pattern for prepared statement names</li> + * <li>$options['seqcol_name'] -> string: sequence column name</li> + * <li>$options['quote_identifier'] -> boolean: if identifier quoting should be done when check_option is used</li> + * <li>$options['use_transactions'] -> boolean: if transaction use should be enabled</li> + * <li>$options['decimal_places'] -> integer: number of decimal places to handle</li> + * <li>$options['portability'] -> integer: portability constant</li> + * <li>$options['modules'] -> array: short to long module name mapping for __call()</li> + * <li>$options['emulate_prepared'] -> boolean: force prepared statements to be emulated</li> + * <li>$options['datatype_map'] -> array: map user defined datatypes to other primitive datatypes</li> + * <li>$options['datatype_map_callback'] -> array: callback function/method that should be called</li> + * <li>$options['bindname_format'] -> string: regular expression pattern for named parameters + * <li>$options['max_identifiers_length'] -> integer: max identifier length</li> + * </ul> + * + * @var array + * @access public + * @see MDB2::connect() + * @see MDB2::factory() + * @see MDB2::singleton() + * @see MDB2_Driver_Common::setOption() + */ + var $options = array( + 'ssl' => false, + 'field_case' => CASE_LOWER, + 'disable_query' => false, + 'result_class' => 'MDB2_Result_%s', + 'buffered_result_class' => 'MDB2_BufferedResult_%s', + 'result_wrap_class' => false, + 'result_buffering' => true, + 'fetch_class' => 'stdClass', + 'persistent' => false, + 'debug' => 0, + 'debug_handler' => 'MDB2_defaultDebugOutput', + 'debug_expanded_output' => false, + 'default_text_field_length' => 4096, + 'lob_buffer_length' => 8192, + 'log_line_break' => "\n", + 'idxname_format' => '%s_idx', + 'seqname_format' => '%s_seq', + 'savepoint_format' => 'MDB2_SAVEPOINT_%s', + 'statement_format' => 'MDB2_STATEMENT_%1$s_%2$s', + 'seqcol_name' => 'sequence', + 'quote_identifier' => false, + 'use_transactions' => true, + 'decimal_places' => 2, + 'portability' => MDB2_PORTABILITY_ALL, + 'modules' => array( + 'ex' => 'Extended', + 'dt' => 'Datatype', + 'mg' => 'Manager', + 'rv' => 'Reverse', + 'na' => 'Native', + 'fc' => 'Function', + ), + 'emulate_prepared' => false, + 'datatype_map' => array(), + 'datatype_map_callback' => array(), + 'nativetype_map_callback' => array(), + 'lob_allow_url_include' => false, + 'bindname_format' => '(?:\d+)|(?:[a-zA-Z][a-zA-Z0-9_]*)', + 'max_identifiers_length' => 30, + ); + + /** + * string array + * @var string + * @access protected + */ + var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => false, 'escape_pattern' => false); + + /** + * identifier quoting + * @var array + * @access protected + */ + var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"'); + + /** + * sql comments + * @var array + * @access protected + */ + var $sql_comments = array( + array('start' => '--', 'end' => "\n", 'escape' => false), + array('start' => '/*', 'end' => '*/', 'escape' => false), + ); + + /** + * comparision wildcards + * @var array + * @access protected + */ + var $wildcards = array('%', '_'); + + /** + * column alias keyword + * @var string + * @access protected + */ + var $as_keyword = ' AS '; + + /** + * warnings + * @var array + * @access protected + */ + var $warnings = array(); + + /** + * string with the debugging information + * @var string + * @access public + */ + var $debug_output = ''; + + /** + * determine if there is an open transaction + * @var bool + * @access protected + */ + var $in_transaction = false; + + /** + * the smart transaction nesting depth + * @var int + * @access protected + */ + var $nested_transaction_counter = null; + + /** + * the first error that occured inside a nested transaction + * @var MDB2_Error|bool + * @access protected + */ + var $has_transaction_error = false; + + /** + * result offset used in the next query + * @var int + * @access protected + */ + var $offset = 0; + + /** + * result limit used in the next query + * @var int + * @access protected + */ + var $limit = 0; + + /** + * Database backend used in PHP (mysql, odbc etc.) + * @var string + * @access public + */ + var $phptype; + + /** + * Database used with regards to SQL syntax etc. + * @var string + * @access public + */ + var $dbsyntax; + + /** + * the last query sent to the driver + * @var string + * @access public + */ + var $last_query; + + /** + * the default fetchmode used + * @var int + * @access protected + */ + var $fetchmode = MDB2_FETCHMODE_ORDERED; + + /** + * array of module instances + * @var array + * @access protected + */ + var $modules = array(); + + /** + * determines of the PHP4 destructor emulation has been enabled yet + * @var array + * @access protected + */ + var $destructor_registered = true; + + // }}} + // {{{ constructor: function __construct() + + /** + * Constructor + */ + function __construct() + { + end($GLOBALS['_MDB2_databases']); + $db_index = key($GLOBALS['_MDB2_databases']) + 1; + $GLOBALS['_MDB2_databases'][$db_index] = &$this; + $this->db_index = $db_index; + } + + // }}} + // {{{ function MDB2_Driver_Common() + + /** + * PHP 4 Constructor + */ + function MDB2_Driver_Common() + { + $this->destructor_registered = false; + $this->__construct(); + } + + // }}} + // {{{ destructor: function __destruct() + + /** + * Destructor + */ + function __destruct() + { + $this->disconnect(false); + } + + // }}} + // {{{ function free() + + /** + * Free the internal references so that the instance can be destroyed + * + * @return bool true on success, false if result is invalid + * + * @access public + */ + function free() + { + unset($GLOBALS['_MDB2_databases'][$this->db_index]); + unset($this->db_index); + return MDB2_OK; + } + + // }}} + // {{{ function __toString() + + /** + * String conversation + * + * @return string representation of the object + * + * @access public + */ + function __toString() + { + $info = get_class($this); + $info.= ': (phptype = '.$this->phptype.', dbsyntax = '.$this->dbsyntax.')'; + if ($this->connection) { + $info.= ' [connected]'; + } + return $info; + } + + // }}} + // {{{ function errorInfo($error = null) + + /** + * This method is used to collect information about an error + * + * @param mixed error code or resource + * + * @return array with MDB2 errorcode, native error code, native message + * + * @access public + */ + function errorInfo($error = null) + { + return array($error, null, null); + } + + // }}} + // {{{ function &raiseError($code = null, $mode = null, $options = null, $userinfo = null) + + /** + * This method is used to communicate an error and invoke error + * callbacks etc. Basically a wrapper for PEAR::raiseError + * without the message string. + * + * @param mixed integer error code, or a PEAR error object (all other + * parameters are ignored if this parameter is an object + * @param int error mode, see PEAR_Error docs + * @param mixed If error mode is PEAR_ERROR_TRIGGER, this is the + * error level (E_USER_NOTICE etc). If error mode is + * PEAR_ERROR_CALLBACK, this is the callback function, + * either as a function name, or as an array of an + * object and method name. For other error modes this + * parameter is ignored. + * @param string Extra debug information. Defaults to the last + * query and native error code. + * @param string name of the method that triggered the error + * + * @return PEAR_Error instance of a PEAR Error object + * + * @access public + * @see PEAR_Error + */ + function &raiseError($code = null, $mode = null, $options = null, $userinfo = null, $method = null) + { + $userinfo = "[Error message: $userinfo]\n"; + // The error is yet a MDB2 error object + if (PEAR::isError($code)) { + // because we use the static PEAR::raiseError, our global + // handler should be used if it is set + if (is_null($mode) && !empty($this->_default_error_mode)) { + $mode = $this->_default_error_mode; + $options = $this->_default_error_options; + } + if (is_null($userinfo)) { + $userinfo = $code->getUserinfo(); + } + $code = $code->getCode(); + } elseif ($code == MDB2_ERROR_NOT_FOUND) { + // extension not loaded: don't call $this->errorInfo() or the script + // will die + } elseif (isset($this->connection)) { + if (!empty($this->last_query)) { + $userinfo.= "[Last executed query: {$this->last_query}]\n"; + } + $native_errno = $native_msg = null; + list($code, $native_errno, $native_msg) = $this->errorInfo($code); + if (!is_null($native_errno) && $native_errno !== '') { + $userinfo.= "[Native code: $native_errno]\n"; + } + if (!is_null($native_msg) && $native_msg !== '') { + $userinfo.= "[Native message: ". strip_tags($native_msg) ."]\n"; + } + if (!is_null($method)) { + $userinfo = $method.': '.$userinfo; + } + } + + $err =& PEAR::raiseError(null, $code, $mode, $options, $userinfo, 'MDB2_Error', true); + if ($err->getMode() !== PEAR_ERROR_RETURN + && isset($this->nested_transaction_counter) && !$this->has_transaction_error) { + $this->has_transaction_error =& $err; + } + return $err; + } + + // }}} + // {{{ function resetWarnings() + + /** + * reset the warning array + * + * @return void + * + * @access public + */ + function resetWarnings() + { + $this->warnings = array(); + } + + // }}} + // {{{ function getWarnings() + + /** + * Get all warnings in reverse order. + * This means that the last warning is the first element in the array + * + * @return array with warnings + * + * @access public + * @see resetWarnings() + */ + function getWarnings() + { + return array_reverse($this->warnings); + } + + // }}} + // {{{ function setFetchMode($fetchmode, $object_class = 'stdClass') + + /** + * Sets which fetch mode should be used by default on queries + * on this connection + * + * @param int MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC + * or MDB2_FETCHMODE_OBJECT + * @param string the class name of the object to be returned + * by the fetch methods when the + * MDB2_FETCHMODE_OBJECT mode is selected. + * If no class is specified by default a cast + * to object from the assoc array row will be + * done. There is also the possibility to use + * and extend the 'MDB2_row' class. + * + * @return mixed MDB2_OK or MDB2 Error Object + * + * @access public + * @see MDB2_FETCHMODE_ORDERED, MDB2_FETCHMODE_ASSOC, MDB2_FETCHMODE_OBJECT + */ + function setFetchMode($fetchmode, $object_class = 'stdClass') + { + switch ($fetchmode) { + case MDB2_FETCHMODE_OBJECT: + $this->options['fetch_class'] = $object_class; + case MDB2_FETCHMODE_ORDERED: + case MDB2_FETCHMODE_ASSOC: + $this->fetchmode = $fetchmode; + break; + default: + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'invalid fetchmode mode', __FUNCTION__); + } + + return MDB2_OK; + } + + // }}} + // {{{ function setOption($option, $value) + + /** + * set the option for the db class + * + * @param string option name + * @param mixed value for the option + * + * @return mixed MDB2_OK or MDB2 Error Object + * + * @access public + */ + function setOption($option, $value) + { + if (array_key_exists($option, $this->options)) { + $this->options[$option] = $value; + return MDB2_OK; + } + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + "unknown option $option", __FUNCTION__); + } + + // }}} + // {{{ function getOption($option) + + /** + * Returns the value of an option + * + * @param string option name + * + * @return mixed the option value or error object + * + * @access public + */ + function getOption($option) + { + if (array_key_exists($option, $this->options)) { + return $this->options[$option]; + } + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + "unknown option $option", __FUNCTION__); + } + + // }}} + // {{{ function debug($message, $scope = '', $is_manip = null) + + /** + * set a debug message + * + * @param string message that should be appended to the debug variable + * @param string usually the method name that triggered the debug call: + * for example 'query', 'prepare', 'execute', 'parameters', + * 'beginTransaction', 'commit', 'rollback' + * @param array contains context information about the debug() call + * common keys are: is_manip, time, result etc. + * + * @return void + * + * @access public + */ + function debug($message, $scope = '', $context = array()) + { + if ($this->options['debug'] && $this->options['debug_handler']) { + if (!$this->options['debug_expanded_output']) { + if (!empty($context['when']) && $context['when'] !== 'pre') { + return null; + } + $context = empty($context['is_manip']) ? false : $context['is_manip']; + } + return call_user_func_array($this->options['debug_handler'], array(&$this, $scope, $message, $context)); + } + return null; + } + + // }}} + // {{{ function getDebugOutput() + + /** + * output debug info + * + * @return string content of the debug_output class variable + * + * @access public + */ + function getDebugOutput() + { + return $this->debug_output; + } + + // }}} + // {{{ function escape($text) + + /** + * Quotes a string so it can be safely used in a query. It will quote + * the text so it can safely be used within a query. + * + * @param string the input string to quote + * @param bool escape wildcards + * + * @return string quoted string + * + * @access public + */ + function escape($text, $escape_wildcards = false) + { + if ($escape_wildcards) { + $text = $this->escapePattern($text); + } + + $text = str_replace($this->string_quoting['end'], $this->string_quoting['escape'] . $this->string_quoting['end'], $text); + return $text; + } + + // }}} + // {{{ function escapePattern($text) + + /** + * Quotes pattern (% and _) characters in a string) + * + * @param string the input string to quote + * + * @return string quoted string + * + * @access public + */ + function escapePattern($text) + { + if ($this->string_quoting['escape_pattern']) { + $text = str_replace($this->string_quoting['escape_pattern'], $this->string_quoting['escape_pattern'] . $this->string_quoting['escape_pattern'], $text); + foreach ($this->wildcards as $wildcard) { + $text = str_replace($wildcard, $this->string_quoting['escape_pattern'] . $wildcard, $text); + } + } + return $text; + } + + // }}} + // {{{ function quoteIdentifier($str, $check_option = false) + + /** + * Quote a string so it can be safely used as a table or column name + * + * Delimiting style depends on which database driver is being used. + * + * NOTE: just because you CAN use delimited identifiers doesn't mean + * you SHOULD use them. In general, they end up causing way more + * problems than they solve. + * + * NOTE: if you have table names containing periods, don't use this method + * (@see bug #11906) + * + * Portability is broken by using the following characters inside + * delimited identifiers: + * + backtick (<kbd>`</kbd>) -- due to MySQL + * + double quote (<kbd>"</kbd>) -- due to Oracle + * + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access + * + * Delimited identifiers are known to generally work correctly under + * the following drivers: + * + mssql + * + mysql + * + mysqli + * + oci8 + * + pgsql + * + sqlite + * + * InterBase doesn't seem to be able to use delimited identifiers + * via PHP 4. They work fine under PHP 5. + * + * @param string identifier name to be quoted + * @param bool check the 'quote_identifier' option + * + * @return string quoted identifier string + * + * @access public + */ + function quoteIdentifier($str, $check_option = false) + { + if ($check_option && !$this->options['quote_identifier']) { + return $str; + } + $str = str_replace($this->identifier_quoting['end'], $this->identifier_quoting['escape'] . $this->identifier_quoting['end'], $str); + $parts = explode('.', $str); + foreach (array_keys($parts) as $k) { + $parts[$k] = $this->identifier_quoting['start'] . $parts[$k] . $this->identifier_quoting['end']; + } + return implode('.', $parts); + } + + // }}} + // {{{ function getAsKeyword() + + /** + * Gets the string to alias column + * + * @return string to use when aliasing a column + */ + function getAsKeyword() + { + return $this->as_keyword; + } + + // }}} + // {{{ function getConnection() + + /** + * Returns a native connection + * + * @return mixed a valid MDB2 connection object, + * or a MDB2 error object on error + * + * @access public + */ + function getConnection() + { + $result = $this->connect(); + if (PEAR::isError($result)) { + return $result; + } + return $this->connection; + } + + // }}} + // {{{ function _fixResultArrayValues(&$row, $mode) + + /** + * Do all necessary conversions on result arrays to fix DBMS quirks + * + * @param array the array to be fixed (passed by reference) + * @param array bit-wise addition of the required portability modes + * + * @return void + * + * @access protected + */ + function _fixResultArrayValues(&$row, $mode) + { + switch ($mode) { + case MDB2_PORTABILITY_EMPTY_TO_NULL: + foreach ($row as $key => $value) { + if ($value === '') { + $row[$key] = null; + } + } + break; + case MDB2_PORTABILITY_RTRIM: + foreach ($row as $key => $value) { + if (is_string($value)) { + $row[$key] = rtrim($value); + } + } + break; + case MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES: + $tmp_row = array(); + foreach ($row as $key => $value) { + $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value; + } + $row = $tmp_row; + break; + case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL): + foreach ($row as $key => $value) { + if ($value === '') { + $row[$key] = null; + } elseif (is_string($value)) { + $row[$key] = rtrim($value); + } + } + break; + case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES): + $tmp_row = array(); + foreach ($row as $key => $value) { + if (is_string($value)) { + $value = rtrim($value); + } + $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value; + } + $row = $tmp_row; + break; + case (MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES): + $tmp_row = array(); + foreach ($row as $key => $value) { + if ($value === '') { + $value = null; + } + $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value; + } + $row = $tmp_row; + break; + case (MDB2_PORTABILITY_RTRIM + MDB2_PORTABILITY_EMPTY_TO_NULL + MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES): + $tmp_row = array(); + foreach ($row as $key => $value) { + if ($value === '') { + $value = null; + } elseif (is_string($value)) { + $value = rtrim($value); + } + $tmp_row[preg_replace('/^(?:.*\.)?([^.]+)$/', '\\1', $key)] = $value; + } + $row = $tmp_row; + break; + } + } + + // }}} + // {{{ function &loadModule($module, $property = null, $phptype_specific = null) + + /** + * loads a module + * + * @param string name of the module that should be loaded + * (only used for error messages) + * @param string name of the property into which the class will be loaded + * @param bool if the class to load for the module is specific to the + * phptype + * + * @return object on success a reference to the given module is returned + * and on failure a PEAR error + * + * @access public + */ + function &loadModule($module, $property = null, $phptype_specific = null) + { + if (!$property) { + $property = strtolower($module); + } + + if (!isset($this->{$property})) { + $version = $phptype_specific; + if ($phptype_specific !== false) { + $version = true; + $class_name = 'MDB2_Driver_'.$module.'_'.$this->phptype; + $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php'; + } + if ($phptype_specific === false + || (!MDB2::classExists($class_name) && !MDB2::fileExists($file_name)) + ) { + $version = false; + $class_name = 'MDB2_'.$module; + $file_name = str_replace('_', DIRECTORY_SEPARATOR, $class_name).'.php'; + } + + $err = MDB2::loadClass($class_name, $this->getOption('debug')); + if (PEAR::isError($err)) { + return $err; + } + + // load module in a specific version + if ($version) { + if (method_exists($class_name, 'getClassName')) { + $class_name_new = call_user_func(array($class_name, 'getClassName'), $this->db_index); + if ($class_name != $class_name_new) { + $class_name = $class_name_new; + $err = MDB2::loadClass($class_name, $this->getOption('debug')); + if (PEAR::isError($err)) { + return $err; + } + } + } + } + + if (!MDB2::classExists($class_name)) { + $err =& $this->raiseError(MDB2_ERROR_LOADMODULE, null, null, + "unable to load module '$module' into property '$property'", __FUNCTION__); + return $err; + } + $this->{$property} = new $class_name($this->db_index); + $this->modules[$module] =& $this->{$property}; + if ($version) { + // this will be used in the connect method to determine if the module + // needs to be loaded with a different version if the server + // version changed in between connects + $this->loaded_version_modules[] = $property; + } + } + + return $this->{$property}; + } + + // }}} + // {{{ function __call($method, $params) + + /** + * Calls a module method using the __call magic method + * + * @param string Method name. + * @param array Arguments. + * + * @return mixed Returned value. + */ + function __call($method, $params) + { + $module = null; + if (preg_match('/^([a-z]+)([A-Z])(.*)$/', $method, $match) + && isset($this->options['modules'][$match[1]]) + ) { + $module = $this->options['modules'][$match[1]]; + $method = strtolower($match[2]).$match[3]; + if (!isset($this->modules[$module]) || !is_object($this->modules[$module])) { + $result =& $this->loadModule($module); + if (PEAR::isError($result)) { + return $result; + } + } + } else { + foreach ($this->modules as $key => $foo) { + if (is_object($this->modules[$key]) + && method_exists($this->modules[$key], $method) + ) { + $module = $key; + break; + } + } + } + if (!is_null($module)) { + return call_user_func_array(array(&$this->modules[$module], $method), $params); + } + trigger_error(sprintf('Call to undefined function: %s::%s().', get_class($this), $method), E_USER_ERROR); + } + + // }}} + // {{{ function beginTransaction($savepoint = null) + + /** + * Start a transaction or set a savepoint. + * + * @param string name of a savepoint to set + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function beginTransaction($savepoint = null) + { + $this->debug('Starting transaction', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'transactions are not supported', __FUNCTION__); + } + + // }}} + // {{{ function commit($savepoint = null) + + /** + * Commit the database changes done during a transaction that is in + * progress or release a savepoint. This function may only be called when + * auto-committing is disabled, otherwise it will fail. Therefore, a new + * transaction is implicitly started after committing the pending changes. + * + * @param string name of a savepoint to release + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function commit($savepoint = null) + { + $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'commiting transactions is not supported', __FUNCTION__); + } + + // }}} + // {{{ function rollback($savepoint = null) + + /** + * Cancel any database changes done during a transaction or since a specific + * savepoint that is in progress. This function may only be called when + * auto-committing is disabled, otherwise it will fail. Therefore, a new + * transaction is implicitly started after canceling the pending changes. + * + * @param string name of a savepoint to rollback to + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function rollback($savepoint = null) + { + $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'rolling back transactions is not supported', __FUNCTION__); + } + + // }}} + // {{{ function inTransaction($ignore_nested = false) + + /** + * If a transaction is currently open. + * + * @param bool if the nested transaction count should be ignored + * @return int|bool - an integer with the nesting depth is returned if a + * nested transaction is open + * - true is returned for a normal open transaction + * - false is returned if no transaction is open + * + * @access public + */ + function inTransaction($ignore_nested = false) + { + if (!$ignore_nested && isset($this->nested_transaction_counter)) { + return $this->nested_transaction_counter; + } + return $this->in_transaction; + } + + // }}} + // {{{ function setTransactionIsolation($isolation) + + /** + * Set the transacton isolation level. + * + * @param string standard isolation level + * READ UNCOMMITTED (allows dirty reads) + * READ COMMITTED (prevents dirty reads) + * REPEATABLE READ (prevents nonrepeatable reads) + * SERIALIZABLE (prevents phantom reads) + * @param array some transaction options: + * 'wait' => 'WAIT' | 'NO WAIT' + * 'rw' => 'READ WRITE' | 'READ ONLY' + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + * @since 2.1.1 + */ + function setTransactionIsolation($isolation, $options = array()) + { + $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true)); + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'isolation level setting is not supported', __FUNCTION__); + } + + // }}} + // {{{ function beginNestedTransaction($savepoint = false) + + /** + * Start a nested transaction. + * + * @return mixed MDB2_OK on success/savepoint name, a MDB2 error on failure + * + * @access public + * @since 2.1.1 + */ + function beginNestedTransaction() + { + if ($this->in_transaction) { + ++$this->nested_transaction_counter; + $savepoint = sprintf($this->options['savepoint_format'], $this->nested_transaction_counter); + if ($this->supports('savepoints') && $savepoint) { + return $this->beginTransaction($savepoint); + } + return MDB2_OK; + } + $this->has_transaction_error = false; + $result = $this->beginTransaction(); + $this->nested_transaction_counter = 1; + return $result; + } + + // }}} + // {{{ function completeNestedTransaction($force_rollback = false, $release = false) + + /** + * Finish a nested transaction by rolling back if an error occured or + * committing otherwise. + * + * @param bool if the transaction should be rolled back regardless + * even if no error was set within the nested transaction + * @return mixed MDB_OK on commit/counter decrementing, false on rollback + * and a MDB2 error on failure + * + * @access public + * @since 2.1.1 + */ + function completeNestedTransaction($force_rollback = false) + { + if ($this->nested_transaction_counter > 1) { + $savepoint = sprintf($this->options['savepoint_format'], $this->nested_transaction_counter); + if ($this->supports('savepoints') && $savepoint) { + if ($force_rollback || $this->has_transaction_error) { + $result = $this->rollback($savepoint); + if (!PEAR::isError($result)) { + $result = false; + $this->has_transaction_error = false; + } + } else { + $result = $this->commit($savepoint); + } + } else { + $result = MDB2_OK; + } + --$this->nested_transaction_counter; + return $result; + } + + $this->nested_transaction_counter = null; + $result = MDB2_OK; + + // transaction has not yet been rolled back + if ($this->in_transaction) { + if ($force_rollback || $this->has_transaction_error) { + $result = $this->rollback(); + if (!PEAR::isError($result)) { + $result = false; + } + } else { + $result = $this->commit(); + } + } + $this->has_transaction_error = false; + return $result; + } + + // }}} + // {{{ function failNestedTransaction($error = null, $immediately = false) + + /** + * Force setting nested transaction to failed. + * + * @param mixed value to return in getNestededTransactionError() + * @param bool if the transaction should be rolled back immediately + * @return bool MDB2_OK + * + * @access public + * @since 2.1.1 + */ + function failNestedTransaction($error = null, $immediately = false) + { + if (is_null($error)) { + $error = $this->has_transaction_error ? $this->has_transaction_error : true; + } elseif (!$error) { + $error = true; + } + $this->has_transaction_error = $error; + if (!$immediately) { + return MDB2_OK; + } + return $this->rollback(); + } + + // }}} + // {{{ function getNestedTransactionError() + + /** + * The first error that occured since the transaction start. + * + * @return MDB2_Error|bool MDB2 error object if an error occured or false. + * + * @access public + * @since 2.1.1 + */ + function getNestedTransactionError() + { + return $this->has_transaction_error; + } + + // }}} + // {{{ connect() + + /** + * Connect to the database + * + * @return true on success, MDB2 Error Object on failure + */ + function connect() + { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ databaseExists() + + /** + * check if given database name is exists? + * + * @param string $name name of the database that should be checked + * + * @return mixed true/false on success, a MDB2 error on failure + * @access public + */ + function databaseExists($name) + { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ setCharset($charset, $connection = null) + + /** + * Set the charset on the current connection + * + * @param string charset + * @param resource connection handle + * + * @return true on success, MDB2 Error Object on failure + */ + function setCharset($charset, $connection = null) + { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function disconnect($force = true) + + /** + * Log out and disconnect from the database. + * + * @param bool if the disconnect should be forced even if the + * connection is opened persistently + * + * @return mixed true on success, false if not connected and error + * object on error + * + * @access public + */ + function disconnect($force = true) + { + $this->connection = 0; + $this->connected_dsn = array(); + $this->connected_database_name = ''; + $this->opened_persistent = null; + $this->connected_server_info = ''; + $this->in_transaction = null; + $this->nested_transaction_counter = null; + return MDB2_OK; + } + + // }}} + // {{{ function setDatabase($name) + + /** + * Select a different database + * + * @param string name of the database that should be selected + * + * @return string name of the database previously connected to + * + * @access public + */ + function setDatabase($name) + { + $previous_database_name = (isset($this->database_name)) ? $this->database_name : ''; + $this->database_name = $name; + if (!empty($this->connected_database_name) && ($this->connected_database_name != $this->database_name)) { + $this->disconnect(false); + } + return $previous_database_name; + } + + // }}} + // {{{ function getDatabase() + + /** + * Get the current database + * + * @return string name of the database + * + * @access public + */ + function getDatabase() + { + return $this->database_name; + } + + // }}} + // {{{ function setDSN($dsn) + + /** + * set the DSN + * + * @param mixed DSN string or array + * + * @return MDB2_OK + * + * @access public + */ + function setDSN($dsn) + { + $dsn_default = $GLOBALS['_MDB2_dsninfo_default']; + $dsn = MDB2::parseDSN($dsn); + if (array_key_exists('database', $dsn)) { + $this->database_name = $dsn['database']; + unset($dsn['database']); + } + $this->dsn = array_merge($dsn_default, $dsn); + return $this->disconnect(false); + } + + // }}} + // {{{ function getDSN($type = 'string', $hidepw = false) + + /** + * return the DSN as a string + * + * @param string format to return ("array", "string") + * @param string string to hide the password with + * + * @return mixed DSN in the chosen type + * + * @access public + */ + function getDSN($type = 'string', $hidepw = false) + { + $dsn = array_merge($GLOBALS['_MDB2_dsninfo_default'], $this->dsn); + $dsn['phptype'] = $this->phptype; + $dsn['database'] = $this->database_name; + if ($hidepw) { + $dsn['password'] = $hidepw; + } + switch ($type) { + // expand to include all possible options + case 'string': + $dsn = $dsn['phptype']. + ($dsn['dbsyntax'] ? ('('.$dsn['dbsyntax'].')') : ''). + '://'.$dsn['username'].':'. + $dsn['password'].'@'.$dsn['hostspec']. + ($dsn['port'] ? (':'.$dsn['port']) : ''). + '/'.$dsn['database']; + break; + case 'array': + default: + break; + } + return $dsn; + } + + // }}} + // {{{ function &standaloneQuery($query, $types = null, $is_manip = false) + + /** + * execute a query as database administrator + * + * @param string the SQL query + * @param mixed array that contains the types of the columns in + * the result set + * @param bool if the query is a manipulation query + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function &standaloneQuery($query, $types = null, $is_manip = false) + { + $offset = $this->offset; + $limit = $this->limit; + $this->offset = $this->limit = 0; + $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); + + $connection = $this->getConnection(); + if (PEAR::isError($connection)) { + return $connection; + } + + $result =& $this->_doQuery($query, $is_manip, $connection, false); + if (PEAR::isError($result)) { + return $result; + } + + if ($is_manip) { + $affected_rows = $this->_affectedRows($connection, $result); + return $affected_rows; + } + $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset); + return $result; + } + + // }}} + // {{{ function _modifyQuery($query, $is_manip, $limit, $offset) + + /** + * Changes a query string for various DBMS specific reasons + * + * @param string query to modify + * @param bool if it is a DML query + * @param int limit the number of rows + * @param int start reading from given offset + * + * @return string modified query + * + * @access protected + */ + function _modifyQuery($query, $is_manip, $limit, $offset) + { + return $query; + } + + // }}} + // {{{ function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null) + + /** + * Execute a query + * @param string query + * @param bool if the query is a manipulation query + * @param resource connection handle + * @param string database name + * + * @return result or error object + * + * @access protected + */ + function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null) + { + $this->last_query = $query; + $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre')); + if ($result) { + if (PEAR::isError($result)) { + return $result; + } + $query = $result; + } + $err =& $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + return $err; + } + + // }}} + // {{{ function _affectedRows($connection, $result = null) + + /** + * Returns the number of rows affected + * + * @param resource result handle + * @param resource connection handle + * + * @return mixed MDB2 Error Object or the number of rows affected + * + * @access private + */ + function _affectedRows($connection, $result = null) + { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function &exec($query) + + /** + * Execute a manipulation query to the database and return the number of affected rows + * + * @param string the SQL query + * + * @return mixed number of affected rows on success, a MDB2 error on failure + * + * @access public + */ + function &exec($query) + { + $offset = $this->offset; + $limit = $this->limit; + $this->offset = $this->limit = 0; + $query = $this->_modifyQuery($query, true, $limit, $offset); + + $connection = $this->getConnection(); + if (PEAR::isError($connection)) { + return $connection; + } + + $result =& $this->_doQuery($query, true, $connection, $this->database_name); + if (PEAR::isError($result)) { + return $result; + } + + $affectedRows = $this->_affectedRows($connection, $result); + return $affectedRows; + } + + // }}} + // {{{ function &query($query, $types = null, $result_class = true, $result_wrap_class = false) + + /** + * Send a query to the database and return any results + * + * @param string the SQL query + * @param mixed array that contains the types of the columns in + * the result set + * @param mixed string which specifies which result class to use + * @param mixed string which specifies which class to wrap results in + * + * @return mixed an MDB2_Result handle on success, a MDB2 error on failure + * + * @access public + */ + function &query($query, $types = null, $result_class = true, $result_wrap_class = false) + { + $offset = $this->offset; + $limit = $this->limit; + $this->offset = $this->limit = 0; + $query = $this->_modifyQuery($query, false, $limit, $offset); + + $connection = $this->getConnection(); + if (PEAR::isError($connection)) { + return $connection; + } + + $result =& $this->_doQuery($query, false, $connection, $this->database_name); + if (PEAR::isError($result)) { + return $result; + } + + $result =& $this->_wrapResult($result, $types, $result_class, $result_wrap_class, $limit, $offset); + return $result; + } + + // }}} + // {{{ function &_wrapResult($result, $types = array(), $result_class = true, $result_wrap_class = false, $limit = null, $offset = null) + + /** + * wrap a result set into the correct class + * + * @param resource result handle + * @param mixed array that contains the types of the columns in + * the result set + * @param mixed string which specifies which result class to use + * @param mixed string which specifies which class to wrap results in + * @param string number of rows to select + * @param string first row to select + * + * @return mixed an MDB2_Result, a MDB2 error on failure + * + * @access protected + */ + function &_wrapResult($result, $types = array(), $result_class = true, + $result_wrap_class = false, $limit = null, $offset = null) + { + if ($types === true) { + if ($this->supports('result_introspection')) { + $this->loadModule('Reverse', null, true); + $tableInfo = $this->reverse->tableInfo($result); + if (PEAR::isError($tableInfo)) { + return $tableInfo; + } + $types = array(); + foreach ($tableInfo as $field) { + $types[] = $field['mdb2type']; + } + } else { + $types = null; + } + } + + if ($result_class === true) { + $result_class = $this->options['result_buffering'] + ? $this->options['buffered_result_class'] : $this->options['result_class']; + } + + if ($result_class) { + $class_name = sprintf($result_class, $this->phptype); + if (!MDB2::classExists($class_name)) { + $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'result class does not exist '.$class_name, __FUNCTION__); + return $err; + } + $result =& new $class_name($this, $result, $limit, $offset); + if (!MDB2::isResultCommon($result)) { + $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'result class is not extended from MDB2_Result_Common', __FUNCTION__); + return $err; + } + if (!empty($types)) { + $err = $result->setResultTypes($types); + if (PEAR::isError($err)) { + $result->free(); + return $err; + } + } + } + if ($result_wrap_class === true) { + $result_wrap_class = $this->options['result_wrap_class']; + } + if ($result_wrap_class) { + if (!MDB2::classExists($result_wrap_class)) { + $err =& $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'result wrap class does not exist '.$result_wrap_class, __FUNCTION__); + return $err; + } + $result = new $result_wrap_class($result, $this->fetchmode); + } + return $result; + } + + // }}} + // {{{ function getServerVersion($native = false) + + /** + * return version information about the server + * + * @param bool determines if the raw version string should be returned + * + * @return mixed array with version information or row string + * + * @access public + */ + function getServerVersion($native = false) + { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function setLimit($limit, $offset = null) + + /** + * set the range of the next query + * + * @param string number of rows to select + * @param string first row to select + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function setLimit($limit, $offset = null) + { + if (!$this->supports('limit_queries')) { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'limit is not supported by this driver', __FUNCTION__); + } + $limit = (int)$limit; + if ($limit < 0) { + return $this->raiseError(MDB2_ERROR_SYNTAX, null, null, + 'it was not specified a valid selected range row limit', __FUNCTION__); + } + $this->limit = $limit; + if (!is_null($offset)) { + $offset = (int)$offset; + if ($offset < 0) { + return $this->raiseError(MDB2_ERROR_SYNTAX, null, null, + 'it was not specified a valid first selected range row', __FUNCTION__); + } + $this->offset = $offset; + } + return MDB2_OK; + } + + // }}} + // {{{ function subSelect($query, $type = false) + + /** + * simple subselect emulation: leaves the query untouched for all RDBMS + * that support subselects + * + * @param string the SQL query for the subselect that may only + * return a column + * @param string determines type of the field + * + * @return string the query + * + * @access public + */ + function subSelect($query, $type = false) + { + if ($this->supports('sub_selects') === true) { + return $query; + } + + if (!$this->supports('sub_selects')) { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + $col = $this->queryCol($query, $type); + if (PEAR::isError($col)) { + return $col; + } + if (!is_array($col) || count($col) == 0) { + return 'NULL'; + } + if ($type) { + $this->loadModule('Datatype', null, true); + return $this->datatype->implodeArray($col, $type); + } + return implode(', ', $col); + } + + // }}} + // {{{ function replace($table, $fields) + + /** + * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT + * query, except that if there is already a row in the table with the same + * key field values, the REPLACE query just updates its values instead of + * inserting a new row. + * + * The REPLACE type of query does not make part of the SQL standards. Since + * practically only MySQL and SQLite implement it natively, this type of + * query isemulated through this method for other DBMS using standard types + * of queries inside a transaction to assure the atomicity of the operation. + * + * @param string name of the table on which the REPLACE query will + * be executed. + * @param array associative array that describes the fields and the + * values that will be inserted or updated in the specified table. The + * indexes of the array are the names of all the fields of the table. + * The values of the array are also associative arrays that describe + * the values and other properties of the table fields. + * + * Here follows a list of field properties that need to be specified: + * + * value + * Value to be assigned to the specified field. This value may be + * of specified in database independent type format as this + * function can perform the necessary datatype conversions. + * + * Default: this property is required unless the Null property is + * set to 1. + * + * type + * Name of the type of the field. Currently, all types MDB2 + * are supported except for clob and blob. + * + * Default: no type conversion + * + * null + * bool property that indicates that the value for this field + * should be set to null. + * + * The default value for fields missing in INSERT queries may be + * specified the definition of a table. Often, the default value + * is already null, but since the REPLACE may be emulated using + * an UPDATE query, make sure that all fields of the table are + * listed in this function argument array. + * + * Default: 0 + * + * key + * bool property that indicates that this field should be + * handled as a primary key or at least as part of the compound + * unique index of the table that will determine the row that will + * updated if it exists or inserted a new row otherwise. + * + * This function will fail if no key field is specified or if the + * value of a key field is set to null because fields that are + * part of unique index they may not be null. + * + * Default: 0 + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function replace($table, $fields) + { + if (!$this->supports('replace')) { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'replace query is not supported', __FUNCTION__); + } + $count = count($fields); + $condition = $values = array(); + for ($colnum = 0, reset($fields); $colnum < $count; next($fields), $colnum++) { + $name = key($fields); + if (isset($fields[$name]['null']) && $fields[$name]['null']) { + $value = 'NULL'; + } else { + $type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null; + $value = $this->quote($fields[$name]['value'], $type); + } + $values[$name] = $value; + if (isset($fields[$name]['key']) && $fields[$name]['key']) { + if ($value === 'NULL') { + return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null, + 'key value '.$name.' may not be NULL', __FUNCTION__); + } + $condition[] = $this->quoteIdentifier($name, true) . '=' . $value; + } + } + if (empty($condition)) { + return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null, + 'not specified which fields are keys', __FUNCTION__); + } + + $result = null; + $in_transaction = $this->in_transaction; + if (!$in_transaction && PEAR::isError($result = $this->beginTransaction())) { + return $result; + } + + $connection = $this->getConnection(); + if (PEAR::isError($connection)) { + return $connection; + } + + $condition = ' WHERE '.implode(' AND ', $condition); + $query = 'DELETE FROM ' . $this->quoteIdentifier($table, true) . $condition; + $result =& $this->_doQuery($query, true, $connection); + if (!PEAR::isError($result)) { + $affected_rows = $this->_affectedRows($connection, $result); + $insert = ''; + foreach ($values as $key => $value) { + $insert .= ($insert?', ':'') . $this->quoteIdentifier($key, true); + } + $values = implode(', ', $values); + $query = 'INSERT INTO '. $this->quoteIdentifier($table, true) . "($insert) VALUES ($values)"; + $result =& $this->_doQuery($query, true, $connection); + if (!PEAR::isError($result)) { + $affected_rows += $this->_affectedRows($connection, $result);; + } + } + + if (!$in_transaction) { + if (PEAR::isError($result)) { + $this->rollback(); + } else { + $result = $this->commit(); + } + } + + if (PEAR::isError($result)) { + return $result; + } + + return $affected_rows; + } + + // }}} + // {{{ function &prepare($query, $types = null, $result_types = null, $lobs = array()) + + /** + * Prepares a query for multiple execution with execute(). + * With some database backends, this is emulated. + * prepare() requires a generic query as string like + * 'INSERT INTO numbers VALUES(?,?)' or + * 'INSERT INTO numbers VALUES(:foo,:bar)'. + * The ? and :name and are placeholders which can be set using + * bindParam() and the query can be sent off using the execute() method. + * The allowed format for :name can be set with the 'bindname_format' option. + * + * @param string the query to prepare + * @param mixed array that contains the types of the placeholders + * @param mixed array that contains the types of the columns in + * the result set or MDB2_PREPARE_RESULT, if set to + * MDB2_PREPARE_MANIP the query is handled as a manipulation query + * @param mixed key (field) value (parameter) pair for all lob placeholders + * + * @return mixed resource handle for the prepared query on success, + * a MDB2 error on failure + * + * @access public + * @see bindParam, execute + */ + function &prepare($query, $types = null, $result_types = null, $lobs = array()) + { + $is_manip = ($result_types === MDB2_PREPARE_MANIP); + $offset = $this->offset; + $limit = $this->limit; + $this->offset = $this->limit = 0; + $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre')); + if ($result) { + if (PEAR::isError($result)) { + return $result; + } + $query = $result; + } + $placeholder_type_guess = $placeholder_type = null; + $question = '?'; + $colon = ':'; + $positions = array(); + $position = 0; - while ($position < strlen($query)) {
- $q_position = strpos($query, $question, $position);
- $c_position = strpos($query, $colon, $position);
- if ($q_position && $c_position) {
- $p_position = min($q_position, $c_position);
- } elseif ($q_position) {
- $p_position = $q_position;
- } elseif ($c_position) {
- $p_position = $c_position;
- } else {
- break;
- }
- if (is_null($placeholder_type)) {
- $placeholder_type_guess = $query[$p_position];
- }
-
- $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position);
- if (PEAR::isError($new_pos)) {
- return $new_pos;
- }
- if ($new_pos != $position) {
- $position = $new_pos;
- continue; //evaluate again starting from the new position
- }
-
- if ($query[$position] == $placeholder_type_guess) {
- if (is_null($placeholder_type)) {
- $placeholder_type = $query[$p_position];
- $question = $colon = $placeholder_type;
- if (!empty($types) && is_array($types)) {
- if ($placeholder_type == ':') {
- if (is_int(key($types))) {
- $types_tmp = $types;
- $types = array();
- $count = -1;
- }
- } else {
- $types = array_values($types);
- }
- }
- }
- if ($placeholder_type == ':') {
- $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
- $parameter = preg_replace($regexp, '\\1', $query);
- if ($parameter === '') {
- $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
- 'named parameter name must match "bindname_format" option', __FUNCTION__);
- return $err;
- }
- $positions[$p_position] = $parameter;
- $query = substr_replace($query, '?', $position, strlen($parameter)+1);
- // use parameter name in type array
- if (isset($count) && isset($types_tmp[++$count])) {
- $types[$parameter] = $types_tmp[$count];
- }
- } else {
- $positions[$p_position] = count($positions);
- }
- $position = $p_position + 1;
- } else {
- $position = $p_position;
- }
- }
- $class_name = 'MDB2_Statement_'.$this->phptype;
- $statement = null;
- $obj = new $class_name($this, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
- $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
- return $obj;
- }
-
- // }}}
- // {{{ function _skipDelimitedStrings($query, $position, $p_position)
-
- /**
- * Utility method, used by prepare() to avoid replacing placeholders within delimited strings.
- * Check if the placeholder is contained within a delimited string.
- * If so, skip it and advance the position, otherwise return the current position,
- * which is valid
- *
- * @param string $query
- * @param integer $position current string cursor position
- * @param integer $p_position placeholder position
- *
- * @return mixed integer $new_position on success
- * MDB2_Error on failure
- *
- * @access protected
- */
- function _skipDelimitedStrings($query, $position, $p_position)
- {
- $ignores[] = $this->string_quoting;
+ while ($position < strlen($query)) { + $q_position = strpos($query, $question, $position); + $c_position = strpos($query, $colon, $position); + if ($q_position && $c_position) { + $p_position = min($q_position, $c_position); + } elseif ($q_position) { + $p_position = $q_position; + } elseif ($c_position) { + $p_position = $c_position; + } else { + break; + } + if (is_null($placeholder_type)) { + $placeholder_type_guess = $query[$p_position]; + } + + $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position); + if (PEAR::isError($new_pos)) { + return $new_pos; + } + if ($new_pos != $position) { + $position = $new_pos; + continue; //evaluate again starting from the new position + } + + if ($query[$position] == $placeholder_type_guess) { + if (is_null($placeholder_type)) { + $placeholder_type = $query[$p_position]; + $question = $colon = $placeholder_type; + if (!empty($types) && is_array($types)) { + if ($placeholder_type == ':') { + if (is_int(key($types))) { + $types_tmp = $types; + $types = array(); + $count = -1; + } + } else { + $types = array_values($types); + } + } + } + if ($placeholder_type == ':') { + $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s'; + $parameter = preg_replace($regexp, '\\1', $query); + if ($parameter === '') { + $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null, + 'named parameter name must match "bindname_format" option', __FUNCTION__); + return $err; + } + $positions[$p_position] = $parameter; + $query = substr_replace($query, '?', $position, strlen($parameter)+1); + // use parameter name in type array + if (isset($count) && isset($types_tmp[++$count])) { + $types[$parameter] = $types_tmp[$count]; + } + } else { + $positions[$p_position] = count($positions); + } + $position = $p_position + 1; + } else { + $position = $p_position; + } + } + $class_name = 'MDB2_Statement_'.$this->phptype; + $statement = null; + $obj = new $class_name($this, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset); + $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj)); + return $obj; + } + + // }}} + // {{{ function _skipDelimitedStrings($query, $position, $p_position) + + /** + * Utility method, used by prepare() to avoid replacing placeholders within delimited strings. + * Check if the placeholder is contained within a delimited string. + * If so, skip it and advance the position, otherwise return the current position, + * which is valid + * + * @param string $query + * @param integer $position current string cursor position + * @param integer $p_position placeholder position + * + * @return mixed integer $new_position on success + * MDB2_Error on failure + * + * @access protected + */ + function _skipDelimitedStrings($query, $position, $p_position) + { + $ignores[] = $this->string_quoting; $ignores[] = $this->identifier_quoting;
- $ignores = array_merge($ignores, $this->sql_comments);
-
- foreach ($ignores as $ignore) {
- if (!empty($ignore['start'])) {
- if (is_int($start_quote = strpos($query, $ignore['start'], $position)) && $start_quote < $p_position) {
- $end_quote = $start_quote;
- do {
- if (!is_int($end_quote = strpos($query, $ignore['end'], $end_quote + 1))) {
- if ($ignore['end'] === "\n") {
- $end_quote = strlen($query) - 1;
- } else {
- $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
- 'query with an unterminated text string specified', __FUNCTION__);
- return $err;
- }
- }
- } while ($ignore['escape']
- && $end_quote-1 != $start_quote
- && $query[($end_quote - 1)] == $ignore['escape']
- && ($ignore['escape_pattern'] !== $ignore['escape']
- || $query[($end_quote - 2)] != $ignore['escape']));
- $position = $end_quote + 1;
- return $position;
- }
- }
- }
- return $position;
- }
-
- // }}}
- // {{{ function quote($value, $type = null, $quote = true)
-
- /**
- * Convert a text value into a DBMS specific format that is suitable to
- * compose query statements.
- *
- * @param string text string value that is intended to be converted.
- * @param string type to which the value should be converted to
- * @param bool quote
- * @param bool escape wildcards
- *
- * @return string text string that represents the given argument value in
- * a DBMS specific format.
- *
- * @access public
- */
- function quote($value, $type = null, $quote = true, $escape_wildcards = false)
- {
- $result = $this->loadModule('Datatype', null, true);
- if (PEAR::isError($result)) {
- return $result;
- }
-
- return $this->datatype->quote($value, $type, $quote, $escape_wildcards);
- }
-
- // }}}
- // {{{ function getDeclaration($type, $name, $field)
-
- /**
- * Obtain DBMS specific SQL code portion needed to declare
- * of the given type
- *
- * @param string type to which the value should be converted to
- * @param string name the field to be declared.
- * @param string definition of the field
- *
- * @return string DBMS specific SQL code portion that should be used to
- * declare the specified field.
- *
- * @access public
- */
- function getDeclaration($type, $name, $field)
- {
- $result = $this->loadModule('Datatype', null, true);
- if (PEAR::isError($result)) {
- return $result;
- }
- return $this->datatype->getDeclaration($type, $name, $field);
- }
-
- // }}}
- // {{{ function compareDefinition($current, $previous)
-
- /**
- * Obtain an array of changes that may need to applied
- *
- * @param array new definition
- * @param array old definition
- *
- * @return array containing all changes that will need to be applied
- *
- * @access public
- */
- function compareDefinition($current, $previous)
- {
- $result = $this->loadModule('Datatype', null, true);
- if (PEAR::isError($result)) {
- return $result;
- }
- return $this->datatype->compareDefinition($current, $previous);
- }
-
- // }}}
- // {{{ function supports($feature)
-
- /**
- * Tell whether a DB implementation or its backend extension
- * supports a given feature.
- *
- * @param string name of the feature (see the MDB2 class doc)
- *
- * @return bool|string if this DB implementation supports a given feature
- * false means no, true means native,
- * 'emulated' means emulated
- *
- * @access public
- */
- function supports($feature)
- {
- if (array_key_exists($feature, $this->supported)) {
- return $this->supported[$feature];
- }
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- "unknown support feature $feature", __FUNCTION__);
- }
-
- // }}}
- // {{{ function getSequenceName($sqn)
-
- /**
- * adds sequence name formatting to a sequence name
- *
- * @param string name of the sequence
- *
- * @return string formatted sequence name
- *
- * @access public
- */
- function getSequenceName($sqn)
- {
- return sprintf($this->options['seqname_format'],
- preg_replace('/[^a-z0-9_\-\$.]/i', '_', $sqn));
- }
-
- // }}}
- // {{{ function getIndexName($idx)
-
- /**
- * adds index name formatting to a index name
- *
- * @param string name of the index
- *
- * @return string formatted index name
- *
- * @access public
- */
- function getIndexName($idx)
- {
- return sprintf($this->options['idxname_format'],
- preg_replace('/[^a-z0-9_\$]/i', '_', $idx));
- }
-
- // }}}
- // {{{ function nextID($seq_name, $ondemand = true)
-
- /**
- * Returns the next free id of a sequence
- *
- * @param string name of the sequence
- * @param bool when true missing sequences are automatic created
- *
- * @return mixed MDB2 Error Object or id
- *
- * @access public
- */
- function nextID($seq_name, $ondemand = true)
- {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function lastInsertID($table = null, $field = null)
-
- /**
- * Returns the autoincrement ID if supported or $id or fetches the current
- * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
- *
- * @param string name of the table into which a new row was inserted
- * @param string name of the field into which a new row was inserted
- *
- * @return mixed MDB2 Error Object or id
- *
- * @access public
- */
- function lastInsertID($table = null, $field = null)
- {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function currID($seq_name)
-
- /**
- * Returns the current id of a sequence
- *
- * @param string name of the sequence
- *
- * @return mixed MDB2 Error Object or id
- *
- * @access public
- */
- function currID($seq_name)
- {
- $this->warnings[] = 'database does not support getting current
- sequence value, the sequence value was incremented';
- return $this->nextID($seq_name);
- }
-
- // }}}
- // {{{ function queryOne($query, $type = null, $colnum = 0)
-
- /**
- * Execute the specified query, fetch the value from the first column of
- * the first row of the result set and then frees
- * the result set.
- *
- * @param string the SELECT query statement to be executed.
- * @param string optional argument that specifies the expected
- * datatype of the result set field, so that an eventual conversion
- * may be performed. The default datatype is text, meaning that no
- * conversion is performed
- * @param int the column number to fetch
- *
- * @return mixed MDB2_OK or field value on success, a MDB2 error on failure
- *
- * @access public
- */
- function queryOne($query, $type = null, $colnum = 0)
- {
- $result = $this->query($query, $type);
- if (!MDB2::isResultCommon($result)) {
- return $result;
- }
-
- $one = $result->fetchOne($colnum);
- $result->free();
- return $one;
- }
-
- // }}}
- // {{{ function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT)
-
- /**
- * Execute the specified query, fetch the values from the first
- * row of the result set into an array and then frees
- * the result set.
- *
- * @param string the SELECT query statement to be executed.
- * @param array optional array argument that specifies a list of
- * expected datatypes of the result set columns, so that the eventual
- * conversions may be performed. The default list of datatypes is
- * empty, meaning that no conversion is performed.
- * @param int how the array data should be indexed
- *
- * @return mixed MDB2_OK or data array on success, a MDB2 error on failure
- *
- * @access public
- */
- function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT)
- {
- $result = $this->query($query, $types);
- if (!MDB2::isResultCommon($result)) {
- return $result;
- }
-
- $row = $result->fetchRow($fetchmode);
- $result->free();
- return $row;
- }
-
- // }}}
- // {{{ function queryCol($query, $type = null, $colnum = 0)
-
- /**
- * Execute the specified query, fetch the value from the first column of
- * each row of the result set into an array and then frees the result set.
- *
- * @param string the SELECT query statement to be executed.
- * @param string optional argument that specifies the expected
- * datatype of the result set field, so that an eventual conversion
- * may be performed. The default datatype is text, meaning that no
- * conversion is performed
- * @param int the row number to fetch
- *
- * @return mixed MDB2_OK or data array on success, a MDB2 error on failure
- *
- * @access public
- */
- function queryCol($query, $type = null, $colnum = 0)
- {
- $result = $this->query($query, $type);
- if (!MDB2::isResultCommon($result)) {
- return $result;
- }
-
- $col = $result->fetchCol($colnum);
- $result->free();
- return $col;
- }
-
- // }}}
- // {{{ function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false)
-
- /**
- * Execute the specified query, fetch all the rows of the result set into
- * a two dimensional array and then frees the result set.
- *
- * @param string the SELECT query statement to be executed.
- * @param array optional array argument that specifies a list of
- * expected datatypes of the result set columns, so that the eventual
- * conversions may be performed. The default list of datatypes is
- * empty, meaning that no conversion is performed.
- * @param int how the array data should be indexed
- * @param bool if set to true, the $all will have the first
- * column as its first dimension
- * @param bool used only when the query returns exactly
- * two columns. If true, the values of the returned array will be
- * one-element arrays instead of scalars.
- * @param bool if true, the values of the returned array is
- * wrapped in another array. If the same key value (in the first
- * column) repeats itself, the values will be appended to this array
- * instead of overwriting the existing values.
- *
- * @return mixed MDB2_OK or data array on success, a MDB2 error on failure
- *
- * @access public
- */
- function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT,
- $rekey = false, $force_array = false, $group = false)
- {
- $result = $this->query($query, $types);
- if (!MDB2::isResultCommon($result)) {
- return $result;
- }
-
- $all = $result->fetchAll($fetchmode, $rekey, $force_array, $group);
- $result->free();
- return $all;
- }
-
- // }}}
-}
-
-// }}}
-// {{{ class MDB2_Result
-
-/**
- * The dummy class that all user space result classes should extend from
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Result
-{
-}
-
-// }}}
-// {{{ class MDB2_Result_Common extends MDB2_Result
-
-/**
- * The common result class for MDB2 result objects
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Result_Common extends MDB2_Result
-{
- // {{{ Variables (Properties)
-
- var $db;
- var $result;
- var $rownum = -1;
- var $types = array();
- var $values = array();
- var $offset;
- var $offset_count = 0;
- var $limit;
- var $column_names;
-
- // }}}
- // {{{ constructor: function __construct(&$db, &$result, $limit = 0, $offset = 0)
-
- /**
- * Constructor
- */
- function __construct(&$db, &$result, $limit = 0, $offset = 0)
- {
- $this->db =& $db;
- $this->result =& $result;
- $this->offset = $offset;
- $this->limit = max(0, $limit - 1);
- }
-
- // }}}
- // {{{ function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0)
-
- /**
- * PHP 4 Constructor
- */
- function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0)
- {
- $this->__construct($db, $result, $limit, $offset);
- }
-
- // }}}
- // {{{ function setResultTypes($types)
-
- /**
- * Define the list of types to be associated with the columns of a given
- * result set.
- *
- * This function may be called before invoking fetchRow(), fetchOne(),
- * fetchCol() and fetchAll() so that the necessary data type
- * conversions are performed on the data to be retrieved by them. If this
- * function is not called, the type of all result set columns is assumed
- * to be text, thus leading to not perform any conversions.
- *
- * @param array variable that lists the
- * data types to be expected in the result set columns. If this array
- * contains less types than the number of columns that are returned
- * in the result set, the remaining columns are assumed to be of the
- * type text. Currently, the types clob and blob are not fully
- * supported.
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function setResultTypes($types)
- {
- $load = $this->db->loadModule('Datatype', null, true);
- if (PEAR::isError($load)) {
- return $load;
- }
- $types = $this->db->datatype->checkResultTypes($types);
- if (PEAR::isError($types)) {
- return $types;
- }
- $this->types = $types;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function seek($rownum = 0)
-
- /**
- * Seek to a specific row in a result set
- *
- * @param int number of the row where the data can be found
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function seek($rownum = 0)
- {
- $target_rownum = $rownum - 1;
- if ($this->rownum > $target_rownum) {
- return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'seeking to previous rows not implemented', __FUNCTION__);
- }
- while ($this->rownum < $target_rownum) {
- $this->fetchRow();
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
-
- /**
- * Fetch and return a row of data
- *
- * @param int how the array data should be indexed
- * @param int number of the row where the data can be found
- *
- * @return int data array on success, a MDB2 error on failure
- *
- * @access public
- */
- function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
- {
- $err =& $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- return $err;
- }
-
- // }}}
- // {{{ function fetchOne($colnum = 0)
-
- /**
- * fetch single column from the next row from a result set
- *
- * @param int the column number to fetch
- * @param int number of the row where the data can be found
- *
- * @return string data on success, a MDB2 error on failure
- *
- * @access public
- */
- function fetchOne($colnum = 0, $rownum = null)
- {
- $fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC;
- $row = $this->fetchRow($fetchmode, $rownum);
- if (!is_array($row) || PEAR::isError($row)) {
- return $row;
- }
- if (!array_key_exists($colnum, $row)) {
- return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null,
- 'column is not defined in the result set: '.$colnum, __FUNCTION__);
- }
- return $row[$colnum];
- }
-
- // }}}
- // {{{ function fetchCol($colnum = 0)
-
- /**
- * Fetch and return a column from the current row pointer position
- *
- * @param int the column number to fetch
- *
- * @return mixed data array on success, a MDB2 error on failure
- *
- * @access public
- */
- function fetchCol($colnum = 0)
- {
- $column = array();
- $fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC;
- $row = $this->fetchRow($fetchmode);
- if (is_array($row)) {
- if (!array_key_exists($colnum, $row)) {
- return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null,
- 'column is not defined in the result set: '.$colnum, __FUNCTION__);
- }
- do {
- $column[] = $row[$colnum];
- } while (is_array($row = $this->fetchRow($fetchmode)));
- }
- if (PEAR::isError($row)) {
- return $row;
- }
- return $column;
- }
-
- // }}}
- // {{{ function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false)
-
- /**
- * Fetch and return all rows from the current row pointer position
- *
- * @param int $fetchmode the fetch mode to use:
- * + MDB2_FETCHMODE_ORDERED
- * + MDB2_FETCHMODE_ASSOC
- * + MDB2_FETCHMODE_ORDERED | MDB2_FETCHMODE_FLIPPED
- * + MDB2_FETCHMODE_ASSOC | MDB2_FETCHMODE_FLIPPED
- * @param bool if set to true, the $all will have the first
- * column as its first dimension
- * @param bool used only when the query returns exactly
- * two columns. If true, the values of the returned array will be
- * one-element arrays instead of scalars.
- * @param bool if true, the values of the returned array is
- * wrapped in another array. If the same key value (in the first
- * column) repeats itself, the values will be appended to this array
- * instead of overwriting the existing values.
- *
- * @return mixed data array on success, a MDB2 error on failure
- *
- * @access public
- * @see getAssoc()
- */
- function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false,
- $force_array = false, $group = false)
- {
- $all = array();
- $row = $this->fetchRow($fetchmode);
- if (PEAR::isError($row)) {
- return $row;
- } elseif (!$row) {
- return $all;
- }
-
- $shift_array = $rekey ? false : null;
- if (!is_null($shift_array)) {
- if (is_object($row)) {
- $colnum = count(get_object_vars($row));
- } else {
- $colnum = count($row);
- }
- if ($colnum < 2) {
- return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null,
- 'rekey feature requires atleast 2 column', __FUNCTION__);
- }
- $shift_array = (!$force_array && $colnum == 2);
- }
-
- if ($rekey) {
- do {
- if (is_object($row)) {
- $arr = get_object_vars($row);
- $key = reset($arr);
- unset($row->{$key});
- } else {
- if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
- $key = reset($row);
- unset($row[key($row)]);
- } else {
- $key = array_shift($row);
- }
- if ($shift_array) {
- $row = array_shift($row);
- }
- }
- if ($group) {
- $all[$key][] = $row;
- } else {
- $all[$key] = $row;
- }
- } while (($row = $this->fetchRow($fetchmode)));
- } elseif ($fetchmode & MDB2_FETCHMODE_FLIPPED) {
- do {
- foreach ($row as $key => $val) {
- $all[$key][] = $val;
- }
- } while (($row = $this->fetchRow($fetchmode)));
- } else {
- do {
- $all[] = $row;
- } while (($row = $this->fetchRow($fetchmode)));
- }
-
- return $all;
- }
-
- // }}}
- // {{{ function rowCount()
- /**
- * Returns the actual row number that was last fetched (count from 0)
- * @return int
- *
- * @access public
- */
- function rowCount()
- {
- return $this->rownum + 1;
- }
-
- // }}}
- // {{{ function numRows()
-
- /**
- * Returns the number of rows in a result object
- *
- * @return mixed MDB2 Error Object or the number of rows
- *
- * @access public
- */
- function numRows()
- {
- return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function nextResult()
-
- /**
- * Move the internal result pointer to the next available result
- *
- * @return true on success, false if there is no more result set or an error object on failure
- *
- * @access public
- */
- function nextResult()
- {
- return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function getColumnNames()
-
- /**
- * Retrieve the names of columns returned by the DBMS in a query result or
- * from the cache.
- *
- * @param bool If set to true the values are the column names,
- * otherwise the names of the columns are the keys.
- * @return mixed Array variable that holds the names of columns or an
- * MDB2 error on failure.
- * Some DBMS may not return any columns when the result set
- * does not contain any rows.
- *
- * @access public
- */
- function getColumnNames($flip = false)
- {
- if (!isset($this->column_names)) {
- $result = $this->_getColumnNames();
- if (PEAR::isError($result)) {
- return $result;
- }
- $this->column_names = $result;
- }
- if ($flip) {
- return array_flip($this->column_names);
- }
- return $this->column_names;
- }
-
- // }}}
- // {{{ function _getColumnNames()
-
- /**
- * Retrieve the names of columns returned by the DBMS in a query result.
- *
- * @return mixed Array variable that holds the names of columns as keys
- * or an MDB2 error on failure.
- * Some DBMS may not return any columns when the result set
- * does not contain any rows.
- *
- * @access private
- */
- function _getColumnNames()
- {
- return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function numCols()
-
- /**
- * Count the number of columns returned by the DBMS in a query result.
- *
- * @return mixed integer value with the number of columns, a MDB2 error
- * on failure
- *
- * @access public
- */
- function numCols()
- {
- return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'method not implemented', __FUNCTION__);
- }
-
- // }}}
- // {{{ function getResource()
-
- /**
- * return the resource associated with the result object
- *
- * @return resource
- *
- * @access public
- */
- function getResource()
- {
- return $this->result;
- }
-
- // }}}
- // {{{ function bindColumn($column, &$value, $type = null)
-
- /**
- * Set bind variable to a column.
- *
- * @param int column number or name
- * @param mixed variable reference
- * @param string specifies the type of the field
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function bindColumn($column, &$value, $type = null)
- {
- if (!is_numeric($column)) {
- $column_names = $this->getColumnNames();
- if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
- if ($this->db->options['field_case'] == CASE_LOWER) {
- $column = strtolower($column);
- } else {
- $column = strtoupper($column);
- }
- }
- $column = $column_names[$column];
- }
- $this->values[$column] =& $value;
- if (!is_null($type)) {
- $this->types[$column] = $type;
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function _assignBindColumns($row)
-
- /**
- * Bind a variable to a value in the result row.
- *
- * @param array row data
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access private
- */
- function _assignBindColumns($row)
- {
- $row = array_values($row);
- foreach ($row as $column => $value) {
- if (array_key_exists($column, $this->values)) {
- $this->values[$column] = $value;
- }
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function free()
-
- /**
- * Free the internal resources associated with result.
- *
- * @return bool true on success, false if result is invalid
- *
- * @access public
- */
- function free()
- {
- $this->result = false;
- return MDB2_OK;
- }
-
- // }}}
-}
-
-// }}}
-// {{{ class MDB2_Row
-
-/**
- * The simple class that accepts row data as an array
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Row
-{
- // {{{ constructor: function __construct(&$row)
-
- /**
- * constructor
- *
- * @param resource row data as array
- */
- function __construct(&$row)
- {
- foreach ($row as $key => $value) {
- $this->$key = &$row[$key];
- }
- }
-
- // }}}
- // {{{ function MDB2_Row(&$row)
-
- /**
- * PHP 4 Constructor
- *
- * @param resource row data as array
- */
- function MDB2_Row(&$row)
- {
- $this->__construct($row);
- }
-
- // }}}
-}
-
-// }}}
-// {{{ class MDB2_Statement_Common
-
-/**
- * The common statement class for MDB2 statement objects
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Statement_Common
-{
- // {{{ Variables (Properties)
-
- var $db;
- var $statement;
- var $query;
- var $result_types;
- var $types;
- var $values = array();
- var $limit;
- var $offset;
- var $is_manip;
-
- // }}}
- // {{{ constructor: function __construct(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null)
-
- /**
- * Constructor
- */
- function __construct(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null)
- {
- $this->db =& $db;
- $this->statement =& $statement;
- $this->positions = $positions;
- $this->query = $query;
- $this->types = (array)$types;
- $this->result_types = (array)$result_types;
- $this->limit = $limit;
- $this->is_manip = $is_manip;
- $this->offset = $offset;
- }
-
- // }}}
- // {{{ function MDB2_Statement_Common(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null)
-
- /**
- * PHP 4 Constructor
- */
- function MDB2_Statement_Common(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null)
- {
- $this->__construct($db, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
- }
-
- // }}}
- // {{{ function bindValue($parameter, &$value, $type = null)
-
- /**
- * Set the value of a parameter of a prepared query.
- *
- * @param int the order number of the parameter in the query
- * statement. The order number of the first parameter is 1.
- * @param mixed value that is meant to be assigned to specified
- * parameter. The type of the value depends on the $type argument.
- * @param string specifies the type of the field
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function bindValue($parameter, $value, $type = null)
- {
- if (!is_numeric($parameter)) {
- $parameter = preg_replace('/^:(.*)$/', '\\1', $parameter);
- }
- if (!in_array($parameter, $this->positions)) {
- return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
- }
- $this->values[$parameter] = $value;
- if (!is_null($type)) {
- $this->types[$parameter] = $type;
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function bindValueArray($values, $types = null)
-
- /**
- * Set the values of multiple a parameter of a prepared query in bulk.
- *
- * @param array specifies all necessary information
- * for bindValue() the array elements must use keys corresponding to
- * the number of the position of the parameter.
- * @param array specifies the types of the fields
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- * @see bindParam()
- */
- function bindValueArray($values, $types = null)
- {
- $types = is_array($types) ? array_values($types) : array_fill(0, count($values), null);
- $parameters = array_keys($values);
- foreach ($parameters as $key => $parameter) {
- $this->db->pushErrorHandling(PEAR_ERROR_RETURN);
- $this->db->expectError(MDB2_ERROR_NOT_FOUND);
- $err = $this->bindValue($parameter, $values[$parameter], $types[$key]);
- $this->db->popExpect();
- $this->db->popErrorHandling();
- if (PEAR::isError($err)) {
- if ($err->getCode() == MDB2_ERROR_NOT_FOUND) {
- //ignore (extra value for missing placeholder)
- continue;
- }
- return $err;
- }
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function bindParam($parameter, &$value, $type = null)
-
- /**
- * Bind a variable to a parameter of a prepared query.
- *
- * @param int the order number of the parameter in the query
- * statement. The order number of the first parameter is 1.
- * @param mixed variable that is meant to be bound to specified
- * parameter. The type of the value depends on the $type argument.
- * @param string specifies the type of the field
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function bindParam($parameter, &$value, $type = null)
- {
- if (!is_numeric($parameter)) {
- $parameter = preg_replace('/^:(.*)$/', '\\1', $parameter);
- }
- if (!in_array($parameter, $this->positions)) {
- return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
- }
- $this->values[$parameter] =& $value;
- if (!is_null($type)) {
- $this->types[$parameter] = $type;
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function bindParamArray(&$values, $types = null)
-
- /**
- * Bind the variables of multiple a parameter of a prepared query in bulk.
- *
- * @param array specifies all necessary information
- * for bindParam() the array elements must use keys corresponding to
- * the number of the position of the parameter.
- * @param array specifies the types of the fields
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- * @see bindParam()
- */
- function bindParamArray(&$values, $types = null)
- {
- $types = is_array($types) ? array_values($types) : array_fill(0, count($values), null);
- $parameters = array_keys($values);
- foreach ($parameters as $key => $parameter) {
- $err = $this->bindParam($parameter, $values[$parameter], $types[$key]);
- if (PEAR::isError($err)) {
- return $err;
- }
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function &execute($values = null, $result_class = true, $result_wrap_class = false)
-
- /**
- * Execute a prepared query statement.
- *
- * @param array specifies all necessary information
- * for bindParam() the array elements must use keys corresponding to
- * the number of the position of the parameter.
- * @param mixed specifies which result class to use
- * @param mixed specifies which class to wrap results in
- *
- * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function &execute($values = null, $result_class = true, $result_wrap_class = false)
- {
- if (is_null($this->positions)) {
- return $this->db->raiseError(MDB2_ERROR, null, null,
- 'Prepared statement has already been freed', __FUNCTION__);
- }
-
- $values = (array)$values;
- if (!empty($values)) {
- $err = $this->bindValueArray($values);
- if (PEAR::isError($err)) {
- return $this->db->raiseError(MDB2_ERROR, null, null,
- 'Binding Values failed with message: ' . $err->getMessage(), __FUNCTION__);
- }
- }
- $result =& $this->_execute($result_class, $result_wrap_class);
- return $result;
- }
-
- // }}}
- // {{{ function &_execute($result_class = true, $result_wrap_class = false)
-
- /**
- * Execute a prepared query statement helper method.
- *
- * @param mixed specifies which result class to use
- * @param mixed specifies which class to wrap results in
- *
- * @return mixed MDB2_Result or integer on success, a MDB2 error on failure
- *
- * @access private
- */
- function &_execute($result_class = true, $result_wrap_class = false)
- {
- $this->last_query = $this->query;
- $query = '';
- $last_position = 0;
- foreach ($this->positions as $current_position => $parameter) {
- if (!array_key_exists($parameter, $this->values)) {
- return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__);
- }
- $value = $this->values[$parameter];
- $query.= substr($this->query, $last_position, $current_position - $last_position);
- if (!isset($value)) {
- $value_quoted = 'NULL';
- } else {
- $type = !empty($this->types[$parameter]) ? $this->types[$parameter] : null;
- $value_quoted = $this->db->quote($value, $type);
- if (PEAR::isError($value_quoted)) {
- return $value_quoted;
- }
- }
- $query.= $value_quoted;
- $last_position = $current_position + 1;
- }
- $query.= substr($this->query, $last_position);
-
- $this->db->offset = $this->offset;
- $this->db->limit = $this->limit;
- if ($this->is_manip) {
- $result = $this->db->exec($query);
- } else {
- $result =& $this->db->query($query, $this->result_types, $result_class, $result_wrap_class);
- }
- return $result;
- }
-
- // }}}
- // {{{ function free()
-
- /**
- * Release resources allocated for the specified prepared query.
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function free()
- {
- if (is_null($this->positions)) {
- return $this->db->raiseError(MDB2_ERROR, null, null,
- 'Prepared statement has already been freed', __FUNCTION__);
- }
-
- $this->statement = null;
- $this->positions = null;
- $this->query = null;
- $this->types = null;
- $this->result_types = null;
- $this->limit = null;
- $this->is_manip = null;
- $this->offset = null;
- $this->values = null;
-
- return MDB2_OK;
- }
-
- // }}}
-}
-
-// }}}
-// {{{ class MDB2_Module_Common
-
-/**
- * The common modules class for MDB2 module objects
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
-class MDB2_Module_Common
-{
- // {{{ Variables (Properties)
-
- /**
- * contains the key to the global MDB2 instance array of the associated
- * MDB2 instance
- *
- * @var int
- * @access protected
- */
- var $db_index;
-
- // }}}
- // {{{ constructor: function __construct($db_index)
-
- /**
- * Constructor
- */
- function __construct($db_index)
- {
- $this->db_index = $db_index;
- }
-
- // }}}
- // {{{ function MDB2_Module_Common($db_index)
-
- /**
- * PHP 4 Constructor
- */
- function MDB2_Module_Common($db_index)
- {
- $this->__construct($db_index);
- }
-
- // }}}
- // {{{ function &getDBInstance()
-
- /**
- * Get the instance of MDB2 associated with the module instance
- *
- * @return object MDB2 instance or a MDB2 error on failure
- *
- * @access public
- */
- function &getDBInstance()
- {
- if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) {
- $result =& $GLOBALS['_MDB2_databases'][$this->db_index];
- } else {
- $result =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'could not find MDB2 instance');
- }
- return $result;
- }
-
- // }}}
-}
-
-// }}}
-// {{{ function MDB2_closeOpenTransactions()
-
-/**
- * Close any open transactions form persistent connections
- *
- * @return void
- *
- * @access public
- */
-
-function MDB2_closeOpenTransactions()
-{
- reset($GLOBALS['_MDB2_databases']);
- while (next($GLOBALS['_MDB2_databases'])) {
- $key = key($GLOBALS['_MDB2_databases']);
- if ($GLOBALS['_MDB2_databases'][$key]->opened_persistent
- && $GLOBALS['_MDB2_databases'][$key]->in_transaction
- ) {
- $GLOBALS['_MDB2_databases'][$key]->rollback();
- }
- }
-}
-
-// }}}
-// {{{ function MDB2_defaultDebugOutput(&$db, $scope, $message, $is_manip = null)
-
-/**
- * default debug output handler
- *
- * @param object reference to an MDB2 database object
- * @param string usually the method name that triggered the debug call:
- * for example 'query', 'prepare', 'execute', 'parameters',
- * 'beginTransaction', 'commit', 'rollback'
- * @param string message that should be appended to the debug variable
- * @param array contains context information about the debug() call
- * common keys are: is_manip, time, result etc.
- *
- * @return void|string optionally return a modified message, this allows
- * rewriting a query before being issued or prepared
- *
- * @access public
- */
-function MDB2_defaultDebugOutput(&$db, $scope, $message, $context = array())
-{
- $db->debug_output.= $scope.'('.$db->db_index.'): ';
- $db->debug_output.= $message.$db->getOption('log_line_break');
- return $message;
-}
-
-// }}}
+ $ignores = array_merge($ignores, $this->sql_comments); + + foreach ($ignores as $ignore) { + if (!empty($ignore['start'])) { + if (is_int($start_quote = strpos($query, $ignore['start'], $position)) && $start_quote < $p_position) { + $end_quote = $start_quote; + do { + if (!is_int($end_quote = strpos($query, $ignore['end'], $end_quote + 1))) { + if ($ignore['end'] === "\n") { + $end_quote = strlen($query) - 1; + } else { + $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null, + 'query with an unterminated text string specified', __FUNCTION__); + return $err; + } + } + } while ($ignore['escape'] + && $end_quote-1 != $start_quote + && $query[($end_quote - 1)] == $ignore['escape'] + && ($ignore['escape_pattern'] !== $ignore['escape'] + || $query[($end_quote - 2)] != $ignore['escape'])); + $position = $end_quote + 1; + return $position; + } + } + } + return $position; + } + + // }}} + // {{{ function quote($value, $type = null, $quote = true) + + /** + * Convert a text value into a DBMS specific format that is suitable to + * compose query statements. + * + * @param string text string value that is intended to be converted. + * @param string type to which the value should be converted to + * @param bool quote + * @param bool escape wildcards + * + * @return string text string that represents the given argument value in + * a DBMS specific format. + * + * @access public + */ + function quote($value, $type = null, $quote = true, $escape_wildcards = false) + { + $result = $this->loadModule('Datatype', null, true); + if (PEAR::isError($result)) { + return $result; + } + + return $this->datatype->quote($value, $type, $quote, $escape_wildcards); + } + + // }}} + // {{{ function getDeclaration($type, $name, $field) + + /** + * Obtain DBMS specific SQL code portion needed to declare + * of the given type + * + * @param string type to which the value should be converted to + * @param string name the field to be declared. + * @param string definition of the field + * + * @return string DBMS specific SQL code portion that should be used to + * declare the specified field. + * + * @access public + */ + function getDeclaration($type, $name, $field) + { + $result = $this->loadModule('Datatype', null, true); + if (PEAR::isError($result)) { + return $result; + } + return $this->datatype->getDeclaration($type, $name, $field); + } + + // }}} + // {{{ function compareDefinition($current, $previous) + + /** + * Obtain an array of changes that may need to applied + * + * @param array new definition + * @param array old definition + * + * @return array containing all changes that will need to be applied + * + * @access public + */ + function compareDefinition($current, $previous) + { + $result = $this->loadModule('Datatype', null, true); + if (PEAR::isError($result)) { + return $result; + } + return $this->datatype->compareDefinition($current, $previous); + } + + // }}} + // {{{ function supports($feature) + + /** + * Tell whether a DB implementation or its backend extension + * supports a given feature. + * + * @param string name of the feature (see the MDB2 class doc) + * + * @return bool|string if this DB implementation supports a given feature + * false means no, true means native, + * 'emulated' means emulated + * + * @access public + */ + function supports($feature) + { + if (array_key_exists($feature, $this->supported)) { + return $this->supported[$feature]; + } + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + "unknown support feature $feature", __FUNCTION__); + } + + // }}} + // {{{ function getSequenceName($sqn) + + /** + * adds sequence name formatting to a sequence name + * + * @param string name of the sequence + * + * @return string formatted sequence name + * + * @access public + */ + function getSequenceName($sqn) + { + return sprintf($this->options['seqname_format'], + preg_replace('/[^a-z0-9_\-\$.]/i', '_', $sqn)); + } + + // }}} + // {{{ function getIndexName($idx) + + /** + * adds index name formatting to a index name + * + * @param string name of the index + * + * @return string formatted index name + * + * @access public + */ + function getIndexName($idx) + { + return sprintf($this->options['idxname_format'], + preg_replace('/[^a-z0-9_\$]/i', '_', $idx)); + } + + // }}} + // {{{ function nextID($seq_name, $ondemand = true) + + /** + * Returns the next free id of a sequence + * + * @param string name of the sequence + * @param bool when true missing sequences are automatic created + * + * @return mixed MDB2 Error Object or id + * + * @access public + */ + function nextID($seq_name, $ondemand = true) + { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function lastInsertID($table = null, $field = null) + + /** + * Returns the autoincrement ID if supported or $id or fetches the current + * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field) + * + * @param string name of the table into which a new row was inserted + * @param string name of the field into which a new row was inserted + * + * @return mixed MDB2 Error Object or id + * + * @access public + */ + function lastInsertID($table = null, $field = null) + { + return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function currID($seq_name) + + /** + * Returns the current id of a sequence + * + * @param string name of the sequence + * + * @return mixed MDB2 Error Object or id + * + * @access public + */ + function currID($seq_name) + { + $this->warnings[] = 'database does not support getting current + sequence value, the sequence value was incremented'; + return $this->nextID($seq_name); + } + + // }}} + // {{{ function queryOne($query, $type = null, $colnum = 0) + + /** + * Execute the specified query, fetch the value from the first column of + * the first row of the result set and then frees + * the result set. + * + * @param string the SELECT query statement to be executed. + * @param string optional argument that specifies the expected + * datatype of the result set field, so that an eventual conversion + * may be performed. The default datatype is text, meaning that no + * conversion is performed + * @param int the column number to fetch + * + * @return mixed MDB2_OK or field value on success, a MDB2 error on failure + * + * @access public + */ + function queryOne($query, $type = null, $colnum = 0) + { + $result = $this->query($query, $type); + if (!MDB2::isResultCommon($result)) { + return $result; + } + + $one = $result->fetchOne($colnum); + $result->free(); + return $one; + } + + // }}} + // {{{ function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT) + + /** + * Execute the specified query, fetch the values from the first + * row of the result set into an array and then frees + * the result set. + * + * @param string the SELECT query statement to be executed. + * @param array optional array argument that specifies a list of + * expected datatypes of the result set columns, so that the eventual + * conversions may be performed. The default list of datatypes is + * empty, meaning that no conversion is performed. + * @param int how the array data should be indexed + * + * @return mixed MDB2_OK or data array on success, a MDB2 error on failure + * + * @access public + */ + function queryRow($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT) + { + $result = $this->query($query, $types); + if (!MDB2::isResultCommon($result)) { + return $result; + } + + $row = $result->fetchRow($fetchmode); + $result->free(); + return $row; + } + + // }}} + // {{{ function queryCol($query, $type = null, $colnum = 0) + + /** + * Execute the specified query, fetch the value from the first column of + * each row of the result set into an array and then frees the result set. + * + * @param string the SELECT query statement to be executed. + * @param string optional argument that specifies the expected + * datatype of the result set field, so that an eventual conversion + * may be performed. The default datatype is text, meaning that no + * conversion is performed + * @param int the row number to fetch + * + * @return mixed MDB2_OK or data array on success, a MDB2 error on failure + * + * @access public + */ + function queryCol($query, $type = null, $colnum = 0) + { + $result = $this->query($query, $type); + if (!MDB2::isResultCommon($result)) { + return $result; + } + + $col = $result->fetchCol($colnum); + $result->free(); + return $col; + } + + // }}} + // {{{ function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false) + + /** + * Execute the specified query, fetch all the rows of the result set into + * a two dimensional array and then frees the result set. + * + * @param string the SELECT query statement to be executed. + * @param array optional array argument that specifies a list of + * expected datatypes of the result set columns, so that the eventual + * conversions may be performed. The default list of datatypes is + * empty, meaning that no conversion is performed. + * @param int how the array data should be indexed + * @param bool if set to true, the $all will have the first + * column as its first dimension + * @param bool used only when the query returns exactly + * two columns. If true, the values of the returned array will be + * one-element arrays instead of scalars. + * @param bool if true, the values of the returned array is + * wrapped in another array. If the same key value (in the first + * column) repeats itself, the values will be appended to this array + * instead of overwriting the existing values. + * + * @return mixed MDB2_OK or data array on success, a MDB2 error on failure + * + * @access public + */ + function queryAll($query, $types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT, + $rekey = false, $force_array = false, $group = false) + { + $result = $this->query($query, $types); + if (!MDB2::isResultCommon($result)) { + return $result; + } + + $all = $result->fetchAll($fetchmode, $rekey, $force_array, $group); + $result->free(); + return $all; + } + + // }}} +} + +// }}} +// {{{ class MDB2_Result + +/** + * The dummy class that all user space result classes should extend from + * + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ +class MDB2_Result +{ +} + +// }}} +// {{{ class MDB2_Result_Common extends MDB2_Result + +/** + * The common result class for MDB2 result objects + * + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ +class MDB2_Result_Common extends MDB2_Result +{ + // {{{ Variables (Properties) + + var $db; + var $result; + var $rownum = -1; + var $types = array(); + var $values = array(); + var $offset; + var $offset_count = 0; + var $limit; + var $column_names; + + // }}} + // {{{ constructor: function __construct(&$db, &$result, $limit = 0, $offset = 0) + + /** + * Constructor + */ + function __construct(&$db, &$result, $limit = 0, $offset = 0) + { + $this->db =& $db; + $this->result =& $result; + $this->offset = $offset; + $this->limit = max(0, $limit - 1); + } + + // }}} + // {{{ function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0) + + /** + * PHP 4 Constructor + */ + function MDB2_Result_Common(&$db, &$result, $limit = 0, $offset = 0) + { + $this->__construct($db, $result, $limit, $offset); + } + + // }}} + // {{{ function setResultTypes($types) + + /** + * Define the list of types to be associated with the columns of a given + * result set. + * + * This function may be called before invoking fetchRow(), fetchOne(), + * fetchCol() and fetchAll() so that the necessary data type + * conversions are performed on the data to be retrieved by them. If this + * function is not called, the type of all result set columns is assumed + * to be text, thus leading to not perform any conversions. + * + * @param array variable that lists the + * data types to be expected in the result set columns. If this array + * contains less types than the number of columns that are returned + * in the result set, the remaining columns are assumed to be of the + * type text. Currently, the types clob and blob are not fully + * supported. + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function setResultTypes($types) + { + $load = $this->db->loadModule('Datatype', null, true); + if (PEAR::isError($load)) { + return $load; + } + $types = $this->db->datatype->checkResultTypes($types); + if (PEAR::isError($types)) { + return $types; + } + $this->types = $types; + return MDB2_OK; + } + + // }}} + // {{{ function seek($rownum = 0) + + /** + * Seek to a specific row in a result set + * + * @param int number of the row where the data can be found + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function seek($rownum = 0) + { + $target_rownum = $rownum - 1; + if ($this->rownum > $target_rownum) { + return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'seeking to previous rows not implemented', __FUNCTION__); + } + while ($this->rownum < $target_rownum) { + $this->fetchRow(); + } + return MDB2_OK; + } + + // }}} + // {{{ function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) + + /** + * Fetch and return a row of data + * + * @param int how the array data should be indexed + * @param int number of the row where the data can be found + * + * @return int data array on success, a MDB2 error on failure + * + * @access public + */ + function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) + { + $err =& $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + return $err; + } + + // }}} + // {{{ function fetchOne($colnum = 0) + + /** + * fetch single column from the next row from a result set + * + * @param int the column number to fetch + * @param int number of the row where the data can be found + * + * @return string data on success, a MDB2 error on failure + * + * @access public + */ + function fetchOne($colnum = 0, $rownum = null) + { + $fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC; + $row = $this->fetchRow($fetchmode, $rownum); + if (!is_array($row) || PEAR::isError($row)) { + return $row; + } + if (!array_key_exists($colnum, $row)) { + return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null, + 'column is not defined in the result set: '.$colnum, __FUNCTION__); + } + return $row[$colnum]; + } + + // }}} + // {{{ function fetchCol($colnum = 0) + + /** + * Fetch and return a column from the current row pointer position + * + * @param int the column number to fetch + * + * @return mixed data array on success, a MDB2 error on failure + * + * @access public + */ + function fetchCol($colnum = 0) + { + $column = array(); + $fetchmode = is_numeric($colnum) ? MDB2_FETCHMODE_ORDERED : MDB2_FETCHMODE_ASSOC; + $row = $this->fetchRow($fetchmode); + if (is_array($row)) { + if (!array_key_exists($colnum, $row)) { + return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null, + 'column is not defined in the result set: '.$colnum, __FUNCTION__); + } + do { + $column[] = $row[$colnum]; + } while (is_array($row = $this->fetchRow($fetchmode))); + } + if (PEAR::isError($row)) { + return $row; + } + return $column; + } + + // }}} + // {{{ function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false) + + /** + * Fetch and return all rows from the current row pointer position + * + * @param int $fetchmode the fetch mode to use: + * + MDB2_FETCHMODE_ORDERED + * + MDB2_FETCHMODE_ASSOC + * + MDB2_FETCHMODE_ORDERED | MDB2_FETCHMODE_FLIPPED + * + MDB2_FETCHMODE_ASSOC | MDB2_FETCHMODE_FLIPPED + * @param bool if set to true, the $all will have the first + * column as its first dimension + * @param bool used only when the query returns exactly + * two columns. If true, the values of the returned array will be + * one-element arrays instead of scalars. + * @param bool if true, the values of the returned array is + * wrapped in another array. If the same key value (in the first + * column) repeats itself, the values will be appended to this array + * instead of overwriting the existing values. + * + * @return mixed data array on success, a MDB2 error on failure + * + * @access public + * @see getAssoc() + */ + function fetchAll($fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, + $force_array = false, $group = false) + { + $all = array(); + $row = $this->fetchRow($fetchmode); + if (PEAR::isError($row)) { + return $row; + } elseif (!$row) { + return $all; + } + + $shift_array = $rekey ? false : null; + if (!is_null($shift_array)) { + if (is_object($row)) { + $colnum = count(get_object_vars($row)); + } else { + $colnum = count($row); + } + if ($colnum < 2) { + return $this->db->raiseError(MDB2_ERROR_TRUNCATED, null, null, + 'rekey feature requires atleast 2 column', __FUNCTION__); + } + $shift_array = (!$force_array && $colnum == 2); + } + + if ($rekey) { + do { + if (is_object($row)) { + $arr = get_object_vars($row); + $key = reset($arr); + unset($row->{$key}); + } else { + if ($fetchmode & MDB2_FETCHMODE_ASSOC) { + $key = reset($row); + unset($row[key($row)]); + } else { + $key = array_shift($row); + } + if ($shift_array) { + $row = array_shift($row); + } + } + if ($group) { + $all[$key][] = $row; + } else { + $all[$key] = $row; + } + } while (($row = $this->fetchRow($fetchmode))); + } elseif ($fetchmode & MDB2_FETCHMODE_FLIPPED) { + do { + foreach ($row as $key => $val) { + $all[$key][] = $val; + } + } while (($row = $this->fetchRow($fetchmode))); + } else { + do { + $all[] = $row; + } while (($row = $this->fetchRow($fetchmode))); + } + + return $all; + } + + // }}} + // {{{ function rowCount() + /** + * Returns the actual row number that was last fetched (count from 0) + * @return int + * + * @access public + */ + function rowCount() + { + return $this->rownum + 1; + } + + // }}} + // {{{ function numRows() + + /** + * Returns the number of rows in a result object + * + * @return mixed MDB2 Error Object or the number of rows + * + * @access public + */ + function numRows() + { + return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function nextResult() + + /** + * Move the internal result pointer to the next available result + * + * @return true on success, false if there is no more result set or an error object on failure + * + * @access public + */ + function nextResult() + { + return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function getColumnNames() + + /** + * Retrieve the names of columns returned by the DBMS in a query result or + * from the cache. + * + * @param bool If set to true the values are the column names, + * otherwise the names of the columns are the keys. + * @return mixed Array variable that holds the names of columns or an + * MDB2 error on failure. + * Some DBMS may not return any columns when the result set + * does not contain any rows. + * + * @access public + */ + function getColumnNames($flip = false) + { + if (!isset($this->column_names)) { + $result = $this->_getColumnNames(); + if (PEAR::isError($result)) { + return $result; + } + $this->column_names = $result; + } + if ($flip) { + return array_flip($this->column_names); + } + return $this->column_names; + } + + // }}} + // {{{ function _getColumnNames() + + /** + * Retrieve the names of columns returned by the DBMS in a query result. + * + * @return mixed Array variable that holds the names of columns as keys + * or an MDB2 error on failure. + * Some DBMS may not return any columns when the result set + * does not contain any rows. + * + * @access private + */ + function _getColumnNames() + { + return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function numCols() + + /** + * Count the number of columns returned by the DBMS in a query result. + * + * @return mixed integer value with the number of columns, a MDB2 error + * on failure + * + * @access public + */ + function numCols() + { + return $this->db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + } + + // }}} + // {{{ function getResource() + + /** + * return the resource associated with the result object + * + * @return resource + * + * @access public + */ + function getResource() + { + return $this->result; + } + + // }}} + // {{{ function bindColumn($column, &$value, $type = null) + + /** + * Set bind variable to a column. + * + * @param int column number or name + * @param mixed variable reference + * @param string specifies the type of the field + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function bindColumn($column, &$value, $type = null) + { + if (!is_numeric($column)) { + $column_names = $this->getColumnNames(); + if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { + if ($this->db->options['field_case'] == CASE_LOWER) { + $column = strtolower($column); + } else { + $column = strtoupper($column); + } + } + $column = $column_names[$column]; + } + $this->values[$column] =& $value; + if (!is_null($type)) { + $this->types[$column] = $type; + } + return MDB2_OK; + } + + // }}} + // {{{ function _assignBindColumns($row) + + /** + * Bind a variable to a value in the result row. + * + * @param array row data + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access private + */ + function _assignBindColumns($row) + { + $row = array_values($row); + foreach ($row as $column => $value) { + if (array_key_exists($column, $this->values)) { + $this->values[$column] = $value; + } + } + return MDB2_OK; + } + + // }}} + // {{{ function free() + + /** + * Free the internal resources associated with result. + * + * @return bool true on success, false if result is invalid + * + * @access public + */ + function free() + { + $this->result = false; + return MDB2_OK; + } + + // }}} +} + +// }}} +// {{{ class MDB2_Row + +/** + * The simple class that accepts row data as an array + * + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ +class MDB2_Row +{ + // {{{ constructor: function __construct(&$row) + + /** + * constructor + * + * @param resource row data as array + */ + function __construct(&$row) + { + foreach ($row as $key => $value) { + $this->$key = &$row[$key]; + } + } + + // }}} + // {{{ function MDB2_Row(&$row) + + /** + * PHP 4 Constructor + * + * @param resource row data as array + */ + function MDB2_Row(&$row) + { + $this->__construct($row); + } + + // }}} +} + +// }}} +// {{{ class MDB2_Statement_Common + +/** + * The common statement class for MDB2 statement objects + * + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ +class MDB2_Statement_Common +{ + // {{{ Variables (Properties) + + var $db; + var $statement; + var $query; + var $result_types; + var $types; + var $values = array(); + var $limit; + var $offset; + var $is_manip; + + // }}} + // {{{ constructor: function __construct(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null) + + /** + * Constructor + */ + function __construct(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null) + { + $this->db =& $db; + $this->statement =& $statement; + $this->positions = $positions; + $this->query = $query; + $this->types = (array)$types; + $this->result_types = (array)$result_types; + $this->limit = $limit; + $this->is_manip = $is_manip; + $this->offset = $offset; + } + + // }}} + // {{{ function MDB2_Statement_Common(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null) + + /** + * PHP 4 Constructor + */ + function MDB2_Statement_Common(&$db, &$statement, $positions, $query, $types, $result_types, $is_manip = false, $limit = null, $offset = null) + { + $this->__construct($db, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset); + } + + // }}} + // {{{ function bindValue($parameter, &$value, $type = null) + + /** + * Set the value of a parameter of a prepared query. + * + * @param int the order number of the parameter in the query + * statement. The order number of the first parameter is 1. + * @param mixed value that is meant to be assigned to specified + * parameter. The type of the value depends on the $type argument. + * @param string specifies the type of the field + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function bindValue($parameter, $value, $type = null) + { + if (!is_numeric($parameter)) { + $parameter = preg_replace('/^:(.*)$/', '\\1', $parameter); + } + if (!in_array($parameter, $this->positions)) { + return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); + } + $this->values[$parameter] = $value; + if (!is_null($type)) { + $this->types[$parameter] = $type; + } + return MDB2_OK; + } + + // }}} + // {{{ function bindValueArray($values, $types = null) + + /** + * Set the values of multiple a parameter of a prepared query in bulk. + * + * @param array specifies all necessary information + * for bindValue() the array elements must use keys corresponding to + * the number of the position of the parameter. + * @param array specifies the types of the fields + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + * @see bindParam() + */ + function bindValueArray($values, $types = null) + { + $types = is_array($types) ? array_values($types) : array_fill(0, count($values), null); + $parameters = array_keys($values); + foreach ($parameters as $key => $parameter) { + $this->db->pushErrorHandling(PEAR_ERROR_RETURN); + $this->db->expectError(MDB2_ERROR_NOT_FOUND); + $err = $this->bindValue($parameter, $values[$parameter], $types[$key]); + $this->db->popExpect(); + $this->db->popErrorHandling(); + if (PEAR::isError($err)) { + if ($err->getCode() == MDB2_ERROR_NOT_FOUND) { + //ignore (extra value for missing placeholder) + continue; + } + return $err; + } + } + return MDB2_OK; + } + + // }}} + // {{{ function bindParam($parameter, &$value, $type = null) + + /** + * Bind a variable to a parameter of a prepared query. + * + * @param int the order number of the parameter in the query + * statement. The order number of the first parameter is 1. + * @param mixed variable that is meant to be bound to specified + * parameter. The type of the value depends on the $type argument. + * @param string specifies the type of the field + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function bindParam($parameter, &$value, $type = null) + { + if (!is_numeric($parameter)) { + $parameter = preg_replace('/^:(.*)$/', '\\1', $parameter); + } + if (!in_array($parameter, $this->positions)) { + return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); + } + $this->values[$parameter] =& $value; + if (!is_null($type)) { + $this->types[$parameter] = $type; + } + return MDB2_OK; + } + + // }}} + // {{{ function bindParamArray(&$values, $types = null) + + /** + * Bind the variables of multiple a parameter of a prepared query in bulk. + * + * @param array specifies all necessary information + * for bindParam() the array elements must use keys corresponding to + * the number of the position of the parameter. + * @param array specifies the types of the fields + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + * @see bindParam() + */ + function bindParamArray(&$values, $types = null) + { + $types = is_array($types) ? array_values($types) : array_fill(0, count($values), null); + $parameters = array_keys($values); + foreach ($parameters as $key => $parameter) { + $err = $this->bindParam($parameter, $values[$parameter], $types[$key]); + if (PEAR::isError($err)) { + return $err; + } + } + return MDB2_OK; + } + + // }}} + // {{{ function &execute($values = null, $result_class = true, $result_wrap_class = false) + + /** + * Execute a prepared query statement. + * + * @param array specifies all necessary information + * for bindParam() the array elements must use keys corresponding to + * the number of the position of the parameter. + * @param mixed specifies which result class to use + * @param mixed specifies which class to wrap results in + * + * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function &execute($values = null, $result_class = true, $result_wrap_class = false) + { + if (is_null($this->positions)) { + return $this->db->raiseError(MDB2_ERROR, null, null, + 'Prepared statement has already been freed', __FUNCTION__); + } + + $values = (array)$values; + if (!empty($values)) { + $err = $this->bindValueArray($values); + if (PEAR::isError($err)) { + return $this->db->raiseError(MDB2_ERROR, null, null, + 'Binding Values failed with message: ' . $err->getMessage(), __FUNCTION__); + } + } + $result =& $this->_execute($result_class, $result_wrap_class); + return $result; + } + + // }}} + // {{{ function &_execute($result_class = true, $result_wrap_class = false) + + /** + * Execute a prepared query statement helper method. + * + * @param mixed specifies which result class to use + * @param mixed specifies which class to wrap results in + * + * @return mixed MDB2_Result or integer on success, a MDB2 error on failure + * + * @access private + */ + function &_execute($result_class = true, $result_wrap_class = false) + { + $this->last_query = $this->query; + $query = ''; + $last_position = 0; + foreach ($this->positions as $current_position => $parameter) { + if (!array_key_exists($parameter, $this->values)) { + return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); + } + $value = $this->values[$parameter]; + $query.= substr($this->query, $last_position, $current_position - $last_position); + if (!isset($value)) { + $value_quoted = 'NULL'; + } else { + $type = !empty($this->types[$parameter]) ? $this->types[$parameter] : null; + $value_quoted = $this->db->quote($value, $type); + if (PEAR::isError($value_quoted)) { + return $value_quoted; + } + } + $query.= $value_quoted; + $last_position = $current_position + 1; + } + $query.= substr($this->query, $last_position); + + $this->db->offset = $this->offset; + $this->db->limit = $this->limit; + if ($this->is_manip) { + $result = $this->db->exec($query); + } else { + $result =& $this->db->query($query, $this->result_types, $result_class, $result_wrap_class); + } + return $result; + } + + // }}} + // {{{ function free() + + /** + * Release resources allocated for the specified prepared query. + * + * @return mixed MDB2_OK on success, a MDB2 error on failure + * + * @access public + */ + function free() + { + if (is_null($this->positions)) { + return $this->db->raiseError(MDB2_ERROR, null, null, + 'Prepared statement has already been freed', __FUNCTION__); + } + + $this->statement = null; + $this->positions = null; + $this->query = null; + $this->types = null; + $this->result_types = null; + $this->limit = null; + $this->is_manip = null; + $this->offset = null; + $this->values = null; + + return MDB2_OK; + } + + // }}} +} + +// }}} +// {{{ class MDB2_Module_Common + +/** + * The common modules class for MDB2 module objects + * + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ +class MDB2_Module_Common +{ + // {{{ Variables (Properties) + + /** + * contains the key to the global MDB2 instance array of the associated + * MDB2 instance + * + * @var int + * @access protected + */ + var $db_index; + + // }}} + // {{{ constructor: function __construct($db_index) + + /** + * Constructor + */ + function __construct($db_index) + { + $this->db_index = $db_index; + } + + // }}} + // {{{ function MDB2_Module_Common($db_index) + + /** + * PHP 4 Constructor + */ + function MDB2_Module_Common($db_index) + { + $this->__construct($db_index); + } + + // }}} + // {{{ function &getDBInstance() + + /** + * Get the instance of MDB2 associated with the module instance + * + * @return object MDB2 instance or a MDB2 error on failure + * + * @access public + */ + function &getDBInstance() + { + if (isset($GLOBALS['_MDB2_databases'][$this->db_index])) { + $result =& $GLOBALS['_MDB2_databases'][$this->db_index]; + } else { + $result =& MDB2::raiseError(MDB2_ERROR_NOT_FOUND, null, null, + 'could not find MDB2 instance'); + } + return $result; + } + + // }}} +} + +// }}} +// {{{ function MDB2_closeOpenTransactions() + +/** + * Close any open transactions form persistent connections + * + * @return void + * + * @access public + */ + +function MDB2_closeOpenTransactions() +{ + reset($GLOBALS['_MDB2_databases']); + while (next($GLOBALS['_MDB2_databases'])) { + $key = key($GLOBALS['_MDB2_databases']); + if ($GLOBALS['_MDB2_databases'][$key]->opened_persistent + && $GLOBALS['_MDB2_databases'][$key]->in_transaction + ) { + $GLOBALS['_MDB2_databases'][$key]->rollback(); + } + } +} + +// }}} +// {{{ function MDB2_defaultDebugOutput(&$db, $scope, $message, $is_manip = null) + +/** + * default debug output handler + * + * @param object reference to an MDB2 database object + * @param string usually the method name that triggered the debug call: + * for example 'query', 'prepare', 'execute', 'parameters', + * 'beginTransaction', 'commit', 'rollback' + * @param string message that should be appended to the debug variable + * @param array contains context information about the debug() call + * common keys are: is_manip, time, result etc. + * + * @return void|string optionally return a modified message, this allows + * rewriting a query before being issued or prepared + * + * @access public + */ +function MDB2_defaultDebugOutput(&$db, $scope, $message, $context = array()) +{ + $db->debug_output.= $scope.'('.$db->db_index.'): '; + $db->debug_output.= $message.$db->getOption('log_line_break'); + return $message; +} + +// }}} ?>
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