diff options
| author | till <till@php.net> | 2008-02-03 12:58:34 +0000 |
|---|---|---|
| committer | till <till@php.net> | 2008-02-03 12:58:34 +0000 |
| commit | 95ebbc985a0e64a364e880de89dbc1ae7952d91e (patch) | |
| tree | 78474efc88790b6d88e4976b51c7bebb5d017a37 /program/lib/MDB2.php | |
| parent | 9f5bd376b47f41924ede3d8136302d0f7b81c89f (diff) | |
* putting latest MDB2 into SVN
* adding MDB2 drivers for mssql, mysql, mysqli, pgsql, sqlite
Diffstat (limited to 'program/lib/MDB2.php')
| -rw-r--r-- | program/lib/MDB2.php | 4295 |
1 files changed, 4295 insertions, 0 deletions
diff --git a/program/lib/MDB2.php b/program/lib/MDB2.php new file mode 100644 index 000000000..a8bbb0fb4 --- /dev/null +++ b/program/lib/MDB2.php @@ -0,0 +1,4295 @@ +<?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 1.307 2007/11/10 13:29:05 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);
+// }}}
+// {{{ 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 $file_name;
+ }
+
+ // }}}
+ // {{{ function apiVersion()
+
+ /**
+ * Return the MDB2 API version
+ *
+ * @return string the MDB2 API version number
+ *
+ * @access public
+ */
+ function apiVersion()
+ {
+ return '2.5.0a2';
+ }
+
+ // }}}
+ // {{{ function &raiseError($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)) {
+ $errorMessages = array(
+ MDB2_OK => 'no error',
+ MDB2_ERROR => 'unknown error',
+ MDB2_ERROR_ALREADY_EXISTS => 'already exists',
+ MDB2_ERROR_CANNOT_CREATE => 'can not create',
+ MDB2_ERROR_CANNOT_ALTER => 'can not alter',
+ MDB2_ERROR_CANNOT_REPLACE => 'can not replace',
+ MDB2_ERROR_CANNOT_DELETE => 'can not delete',
+ MDB2_ERROR_CANNOT_DROP => 'can not drop',
+ MDB2_ERROR_CONSTRAINT => 'constraint violation',
+ MDB2_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint',
+ MDB2_ERROR_DIVZERO => 'division by zero',
+ MDB2_ERROR_INVALID => 'invalid',
+ MDB2_ERROR_INVALID_DATE => 'invalid date or time',
+ MDB2_ERROR_INVALID_NUMBER => 'invalid number',
+ MDB2_ERROR_MISMATCH => 'mismatch',
+ MDB2_ERROR_NODBSELECTED => 'no database selected',
+ MDB2_ERROR_NOSUCHFIELD => 'no such field',
+ MDB2_ERROR_NOSUCHTABLE => 'no such table',
+ MDB2_ERROR_NOT_CAPABLE => 'MDB2 backend not capable',
+ MDB2_ERROR_NOT_FOUND => 'not found',
+ MDB2_ERROR_NOT_LOCKED => 'not locked',
+ MDB2_ERROR_SYNTAX => 'syntax error',
+ MDB2_ERROR_UNSUPPORTED => 'not supported',
+ MDB2_ERROR_VALUE_COUNT_ON_ROW => 'value count on row',
+ MDB2_ERROR_INVALID_DSN => 'invalid DSN',
+ MDB2_ERROR_CONNECT_FAILED => 'connect failed',
+ MDB2_ERROR_NEED_MORE_DATA => 'insufficient data supplied',
+ MDB2_ERROR_EXTENSION_NOT_FOUND=> 'extension not found',
+ MDB2_ERROR_NOSUCHDB => 'no such database',
+ MDB2_ERROR_ACCESS_VIOLATION => 'insufficient permissions',
+ MDB2_ERROR_LOADMODULE => 'error while including on demand module',
+ MDB2_ERROR_TRUNCATED => 'truncated',
+ MDB2_ERROR_DEADLOCK => 'deadlock detected',
+ );
+ }
+
+ if (is_null($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;
+ $dsn = null;
+ } elseif (strpos($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 $supported = array(
+ 'sequences' => false,
+ 'indexes' => false,
+ 'affected_rows' => false,
+ 'summary_functions' => false,
+ 'order_by_text' => false,
+ 'transactions' => false,
+ 'savepoints' => false,
+ 'current_id' => false,
+ 'limit_queries' => false,
+ 'LOBs' => false,
+ 'replace' => false,
+ 'sub_selects' => false,
+ 'auto_increment' => false,
+ 'primary_key' => false,
+ 'result_introspection' => false,
+ 'prepared_statements' => false,
+ 'identifier_quoting' => false,
+ 'pattern_escaping' => false,
+ 'new_link' => false,
+ );
+
+ /**
+ * Array of supported options that can be passed to the MDB2 instance.
+ *
+ * The options can be set during object creation, using
+ * MDB2::connect(), MDB2::factory() or MDB2::singleton(). The options can
+ * also be set after the object is created, using MDB2::setOptions() or
+ * MDB2_Driver_Common::setOption().
+ * The list of available option includes:
+ * <ul>
+ * <li>$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
+ * </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_]*)',
+ );
+
+ /**
+ * 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 $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+ 'method not implemented', __FUNCTION__);
+ }
+
+ // }}}
+ // {{{ setCharset($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;
+ $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[] = $name . '=' . $value;
+ }
+ }
+ if (empty($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 $table$condition";
+ $result =& $this->_doQuery($query, true, $connection);
+ if (!PEAR::isError($result)) {
+ $affected_rows = $this->_affectedRows($connection, $result);
+ $insert = implode(', ', array_keys($values));
+ $values = implode(', ', $values);
+ $query = "INSERT INTO $table ($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;
+ $ignores = $this->sql_comments;
+ $ignores[] = $this->string_quoting;
+ $ignores[] = $this->identifier_quoting;
+ while ($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->sql_comments;
+ $ignores[] = $this->string_quoting;
+ $ignores[] = $this->identifier_quoting;
+
+ foreach ($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'] && $query[($end_quote - 1)] == $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->expectError(MDB2_ERROR_NOT_FOUND);
+ $err = $this->bindValue($parameter, $values[$parameter], $types[$key]);
+ $this->db->popExpect();
+ if (PEAR::isError($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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