summaryrefslogtreecommitdiff
path: root/program/lib/MDB2/Driver/pgsql.php
diff options
context:
space:
mode:
Diffstat (limited to 'program/lib/MDB2/Driver/pgsql.php')
-rw-r--r--program/lib/MDB2/Driver/pgsql.php3057
1 files changed, 1546 insertions, 1511 deletions
diff --git a/program/lib/MDB2/Driver/pgsql.php b/program/lib/MDB2/Driver/pgsql.php
index de27bae7d..ca2874d5a 100644
--- a/program/lib/MDB2/Driver/pgsql.php
+++ b/program/lib/MDB2/Driver/pgsql.php
@@ -1,1512 +1,1547 @@
-<?php
-// vim: set et ts=4 sw=4 fdm=marker:
-// +----------------------------------------------------------------------+
-// | PHP versions 4 and 5 |
-// +----------------------------------------------------------------------+
-// | Copyright (c) 1998-2008 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: Paul Cooper <pgc@ucecom.com> |
-// +----------------------------------------------------------------------+
-//
-// $Id: pgsql.php,v 1.197 2008/03/08 14:18:39 quipo Exp $
-
-/**
- * MDB2 PostGreSQL driver
- *
- * @package MDB2
- * @category Database
- * @author Paul Cooper <pgc@ucecom.com>
- */
-class MDB2_Driver_pgsql extends MDB2_Driver_Common
-{
- // {{{ properties
- var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => '\\');
-
- var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
- // }}}
- // {{{ constructor
-
- /**
- * Constructor
- */
- function __construct()
- {
- parent::__construct();
-
- $this->phptype = 'pgsql';
- $this->dbsyntax = 'pgsql';
-
- $this->supported['sequences'] = true;
- $this->supported['indexes'] = true;
- $this->supported['affected_rows'] = true;
- $this->supported['summary_functions'] = true;
- $this->supported['order_by_text'] = true;
- $this->supported['transactions'] = true;
- $this->supported['savepoints'] = true;
- $this->supported['current_id'] = true;
- $this->supported['limit_queries'] = true;
- $this->supported['LOBs'] = true;
- $this->supported['replace'] = 'emulated';
- $this->supported['sub_selects'] = true;
- $this->supported['triggers'] = true;
- $this->supported['auto_increment'] = 'emulated';
- $this->supported['primary_key'] = true;
- $this->supported['result_introspection'] = true;
- $this->supported['prepared_statements'] = true;
- $this->supported['identifier_quoting'] = true;
- $this->supported['pattern_escaping'] = true;
- $this->supported['new_link'] = true;
-
- $this->options['DBA_username'] = false;
- $this->options['DBA_password'] = false;
- $this->options['multi_query'] = false;
- $this->options['disable_smart_seqname'] = false;
- $this->options['max_identifiers_length'] = 63;
- }
-
- // }}}
- // {{{ errorInfo()
-
- /**
- * This method is used to collect information about an error
- *
- * @param integer $error
- * @return array
- * @access public
- */
- function errorInfo($error = null)
- {
- // Fall back to MDB2_ERROR if there was no mapping.
- $error_code = MDB2_ERROR;
-
- $native_msg = '';
- if (is_resource($error)) {
- $native_msg = @pg_result_error($error);
- } elseif ($this->connection) {
- $native_msg = @pg_last_error($this->connection);
- if (!$native_msg && @pg_connection_status($this->connection) === PGSQL_CONNECTION_BAD) {
- $native_msg = 'Database connection has been lost.';
- $error_code = MDB2_ERROR_CONNECT_FAILED;
- }
- } else {
- $native_msg = @pg_last_error();
- }
-
- static $error_regexps;
- if (empty($error_regexps)) {
- $error_regexps = array(
- '/column .* (of relation .*)?does not exist/i'
- => MDB2_ERROR_NOSUCHFIELD,
- '/(relation|sequence|table).*does not exist|class .* not found/i'
- => MDB2_ERROR_NOSUCHTABLE,
- '/database .* does not exist/'
- => MDB2_ERROR_NOT_FOUND,
- '/index .* does not exist/'
- => MDB2_ERROR_NOT_FOUND,
- '/database .* already exists/i'
- => MDB2_ERROR_ALREADY_EXISTS,
- '/relation .* already exists/i'
- => MDB2_ERROR_ALREADY_EXISTS,
- '/(divide|division) by zero$/i'
- => MDB2_ERROR_DIVZERO,
- '/pg_atoi: error in .*: can\'t parse /i'
- => MDB2_ERROR_INVALID_NUMBER,
- '/invalid input syntax for( type)? (integer|numeric)/i'
- => MDB2_ERROR_INVALID_NUMBER,
- '/value .* is out of range for type \w*int/i'
- => MDB2_ERROR_INVALID_NUMBER,
- '/integer out of range/i'
- => MDB2_ERROR_INVALID_NUMBER,
- '/value too long for type character/i'
- => MDB2_ERROR_INVALID,
- '/attribute .* not found|relation .* does not have attribute/i'
- => MDB2_ERROR_NOSUCHFIELD,
- '/column .* specified in USING clause does not exist in (left|right) table/i'
- => MDB2_ERROR_NOSUCHFIELD,
- '/parser: parse error at or near/i'
- => MDB2_ERROR_SYNTAX,
- '/syntax error at/'
- => MDB2_ERROR_SYNTAX,
- '/column reference .* is ambiguous/i'
- => MDB2_ERROR_SYNTAX,
- '/permission denied/'
- => MDB2_ERROR_ACCESS_VIOLATION,
- '/violates not-null constraint/'
- => MDB2_ERROR_CONSTRAINT_NOT_NULL,
- '/violates [\w ]+ constraint/'
- => MDB2_ERROR_CONSTRAINT,
- '/referential integrity violation/'
- => MDB2_ERROR_CONSTRAINT,
- '/more expressions than target columns/i'
- => MDB2_ERROR_VALUE_COUNT_ON_ROW,
- );
- }
- if (is_numeric($error) && $error < 0) {
- $error_code = $error;
- } else {
- foreach ($error_regexps as $regexp => $code) {
- if (preg_match($regexp, $native_msg)) {
- $error_code = $code;
- break;
- }
- }
- }
- return array($error_code, null, $native_msg);
- }
-
- // }}}
- // {{{ escape()
-
- /**
- * Quotes a string so it can be safely used in a query. It will quote
- * the text so it can safely be used within a query.
- *
- * @param string the input string to quote
- * @param bool escape wildcards
- *
- * @return string quoted string
- *
- * @access public
- */
- function escape($text, $escape_wildcards = false)
- {
- if ($escape_wildcards) {
- $text = $this->escapePattern($text);
- }
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- if (is_resource($connection) && version_compare(PHP_VERSION, '5.2.0RC5', '>=')) {
- $text = @pg_escape_string($connection, $text);
- } else {
- $text = @pg_escape_string($text);
- }
- return $text;
- }
-
- // }}}
- // {{{ beginTransaction()
-
- /**
- * Start a transaction or set a savepoint.
- *
- * @param string name of a savepoint to set
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function beginTransaction($savepoint = null)
- {
- $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- if (!is_null($savepoint)) {
- if (!$this->in_transaction) {
- return $this->raiseError(MDB2_ERROR_INVALID, null, null,
- 'savepoint cannot be released when changes are auto committed', __FUNCTION__);
- }
- $query = 'SAVEPOINT '.$savepoint;
- return $this->_doQuery($query, true);
- } elseif ($this->in_transaction) {
- return MDB2_OK; //nothing to do
- }
- if (!$this->destructor_registered && $this->opened_persistent) {
- $this->destructor_registered = true;
- register_shutdown_function('MDB2_closeOpenTransactions');
- }
- $result =& $this->_doQuery('BEGIN', true);
- if (PEAR::isError($result)) {
- return $result;
- }
- $this->in_transaction = true;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ commit()
-
- /**
- * Commit the database changes done during a transaction that is in
- * progress or release a savepoint. This function may only be called when
- * auto-committing is disabled, otherwise it will fail. Therefore, a new
- * transaction is implicitly started after committing the pending changes.
- *
- * @param string name of a savepoint to release
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function commit($savepoint = null)
- {
- $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- if (!$this->in_transaction) {
- return $this->raiseError(MDB2_ERROR_INVALID, null, null,
- 'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
- }
- if (!is_null($savepoint)) {
- $query = 'RELEASE SAVEPOINT '.$savepoint;
- return $this->_doQuery($query, true);
- }
-
- $result =& $this->_doQuery('COMMIT', true);
- if (PEAR::isError($result)) {
- return $result;
- }
- $this->in_transaction = false;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ rollback()
-
- /**
- * Cancel any database changes done during a transaction or since a specific
- * savepoint that is in progress. This function may only be called when
- * auto-committing is disabled, otherwise it will fail. Therefore, a new
- * transaction is implicitly started after canceling the pending changes.
- *
- * @param string name of a savepoint to rollback to
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function rollback($savepoint = null)
- {
- $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- if (!$this->in_transaction) {
- return $this->raiseError(MDB2_ERROR_INVALID, null, null,
- 'rollback cannot be done changes are auto committed', __FUNCTION__);
- }
- if (!is_null($savepoint)) {
- $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
- return $this->_doQuery($query, true);
- }
-
- $query = 'ROLLBACK';
- $result =& $this->_doQuery($query, true);
- if (PEAR::isError($result)) {
- return $result;
- }
- $this->in_transaction = false;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ function setTransactionIsolation()
-
- /**
- * Set the transacton isolation level.
- *
- * @param string standard isolation level
- * READ UNCOMMITTED (allows dirty reads)
- * READ COMMITTED (prevents dirty reads)
- * REPEATABLE READ (prevents nonrepeatable reads)
- * SERIALIZABLE (prevents phantom reads)
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- * @since 2.1.1
- */
- function setTransactionIsolation($isolation)
- {
- $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
- switch ($isolation) {
- case 'READ UNCOMMITTED':
- case 'READ COMMITTED':
- case 'REPEATABLE READ':
- case 'SERIALIZABLE':
- break;
- default:
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'isolation level is not supported: '.$isolation, __FUNCTION__);
- }
-
- $query = "SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL $isolation";
- return $this->_doQuery($query, true);
- }
-
- // }}}
- // {{{ _doConnect()
-
- /**
- * Do the grunt work of connecting to the database
- *
- * @return mixed connection resource on success, MDB2 Error Object on failure
- * @access protected
- */
- function _doConnect($username, $password, $database_name, $persistent = false)
- {
- if (!PEAR::loadExtension($this->phptype)) {
- return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
- }
-
- if ($database_name == '') {
- $database_name = 'template1';
- }
-
- $protocol = $this->dsn['protocol'] ? $this->dsn['protocol'] : 'tcp';
-
- $params = array('');
- if ($protocol == 'tcp') {
- if ($this->dsn['hostspec']) {
- $params[0].= 'host=' . $this->dsn['hostspec'];
- }
- if ($this->dsn['port']) {
- $params[0].= ' port=' . $this->dsn['port'];
- }
- } elseif ($protocol == 'unix') {
- // Allow for pg socket in non-standard locations.
- if ($this->dsn['socket']) {
- $params[0].= 'host=' . $this->dsn['socket'];
- }
- if ($this->dsn['port']) {
- $params[0].= ' port=' . $this->dsn['port'];
- }
- }
- if ($database_name) {
- $params[0].= ' dbname=\'' . addslashes($database_name) . '\'';
- }
- if ($username) {
- $params[0].= ' user=\'' . addslashes($username) . '\'';
- }
- if ($password) {
- $params[0].= ' password=\'' . addslashes($password) . '\'';
- }
- if (!empty($this->dsn['options'])) {
- $params[0].= ' options=' . $this->dsn['options'];
- }
- if (!empty($this->dsn['tty'])) {
- $params[0].= ' tty=' . $this->dsn['tty'];
- }
- if (!empty($this->dsn['connect_timeout'])) {
- $params[0].= ' connect_timeout=' . $this->dsn['connect_timeout'];
- }
- if (!empty($this->dsn['sslmode'])) {
- $params[0].= ' sslmode=' . $this->dsn['sslmode'];
- }
- if (!empty($this->dsn['service'])) {
- $params[0].= ' service=' . $this->dsn['service'];
- }
-
- if (!empty($this->dsn['new_link'])
- && ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true))
- {
- if (version_compare(phpversion(), '4.3.0', '>=')) {
- $params[] = PGSQL_CONNECT_FORCE_NEW;
- }
- }
-
- $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect';
- $connection = @call_user_func_array($connect_function, $params);
- if (!$connection) {
- return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
- 'unable to establish a connection', __FUNCTION__);
- }
-
- if (empty($this->dsn['disable_iso_date'])) {
- if (!@pg_query($connection, "SET SESSION DATESTYLE = 'ISO'")) {
- return $this->raiseError(null, null, null,
- 'Unable to set date style to iso', __FUNCTION__);
- }
- }
-
- if (!empty($this->dsn['charset'])) {
- $result = $this->setCharset($this->dsn['charset'], $connection);
- if (PEAR::isError($result)) {
- return $result;
- }
- }
-
- return $connection;
- }
-
- // }}}
- // {{{ connect()
-
- /**
- * Connect to the database
- *
- * @return true on success, MDB2 Error Object on failure
- * @access public
- */
- function connect()
- {
- if (is_resource($this->connection)) {
- //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
- if (MDB2::areEquals($this->connected_dsn, $this->dsn)
- && $this->connected_database_name == $this->database_name
- && ($this->opened_persistent == $this->options['persistent'])
- ) {
- return MDB2_OK;
- }
- $this->disconnect(false);
- }
-
- if ($this->database_name) {
- $connection = $this->_doConnect($this->dsn['username'],
- $this->dsn['password'],
- $this->database_name,
- $this->options['persistent']);
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- $this->connection = $connection;
- $this->connected_dsn = $this->dsn;
- $this->connected_database_name = $this->database_name;
- $this->opened_persistent = $this->options['persistent'];
- $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
- }
-
- return MDB2_OK;
- }
-
- // }}}
- // {{{ setCharset()
-
- /**
- * Set the charset on the current connection
- *
- * @param string charset
- * @param resource connection handle
- *
- * @return true on success, MDB2 Error Object on failure
- */
- function setCharset($charset, $connection = null)
- {
- if (is_null($connection)) {
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- }
- if (is_array($charset)) {
- $charset = array_shift($charset);
- $this->warnings[] = 'postgresql does not support setting client collation';
- }
- $result = @pg_set_client_encoding($connection, $charset);
- if ($result == -1) {
- return $this->raiseError(null, null, null,
- 'Unable to set client charset: '.$charset, __FUNCTION__);
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ databaseExists()
-
- /**
- * check if given database name is exists?
- *
- * @param string $name name of the database that should be checked
- *
- * @return mixed true/false on success, a MDB2 error on failure
- * @access public
- */
- function databaseExists($name)
- {
- $res = $this->_doConnect($this->dsn['username'],
- $this->dsn['password'],
- $this->escape($name),
- $this->options['persistent']);
- if (!PEAR::isError($res)) {
- return true;
- }
-
- return false;
- }
-
- // }}}
- // {{{ disconnect()
-
- /**
- * Log out and disconnect from the database.
- *
- * @param boolean $force if the disconnect should be forced even if the
- * connection is opened persistently
- * @return mixed true on success, false if not connected and error
- * object on error
- * @access public
- */
- function disconnect($force = true)
- {
- if (is_resource($this->connection)) {
- if ($this->in_transaction) {
- $dsn = $this->dsn;
- $database_name = $this->database_name;
- $persistent = $this->options['persistent'];
- $this->dsn = $this->connected_dsn;
- $this->database_name = $this->connected_database_name;
- $this->options['persistent'] = $this->opened_persistent;
- $this->rollback();
- $this->dsn = $dsn;
- $this->database_name = $database_name;
- $this->options['persistent'] = $persistent;
- }
-
- if (!$this->opened_persistent || $force) {
- @pg_close($this->connection);
- }
- }
- return parent::disconnect($force);
- }
-
- // }}}
- // {{{ standaloneQuery()
-
- /**
- * execute a query as DBA
- *
- * @param string $query the SQL query
- * @param mixed $types array that contains the types of the columns in
- * the result set
- * @param boolean $is_manip if the query is a manipulation query
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function &standaloneQuery($query, $types = null, $is_manip = false)
- {
- $user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username'];
- $pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password'];
- $connection = $this->_doConnect($user, $pass, $this->database_name, $this->options['persistent']);
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- $offset = $this->offset;
- $limit = $this->limit;
- $this->offset = $this->limit = 0;
- $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
-
- $result =& $this->_doQuery($query, $is_manip, $connection, $this->database_name);
- if (!PEAR::isError($result)) {
- if ($is_manip) {
- $result = $this->_affectedRows($connection, $result);
- } else {
- $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
- }
- }
-
- @pg_close($connection);
- return $result;
- }
-
- // }}}
- // {{{ _doQuery()
-
- /**
- * Execute a query
- * @param string $query query
- * @param boolean $is_manip if the query is a manipulation query
- * @param resource $connection
- * @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 = $result;
- }
- if ($this->options['disable_query']) {
- $result = $is_manip ? 0 : null;
- return $result;
- }
-
- if (is_null($connection)) {
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- }
-
- $function = $this->options['multi_query'] ? 'pg_send_query' : 'pg_query';
- $result = @$function($connection, $query);
- if (!$result) {
- $err =& $this->raiseError(null, null, null,
- 'Could not execute statement', __FUNCTION__);
- return $err;
- } elseif ($this->options['multi_query']) {
- if (!($result = @pg_get_result($connection))) {
- $err =& $this->raiseError(null, null, null,
- 'Could not get the first result from a multi query', __FUNCTION__);
- return $err;
- }
- }
-
- $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
- return $result;
- }
-
- // }}}
- // {{{ _affectedRows()
-
- /**
- * Returns the number of rows affected
- *
- * @param resource $result
- * @param resource $connection
- * @return mixed MDB2 Error Object or the number of rows affected
- * @access private
- */
- function _affectedRows($connection, $result = null)
- {
- if (is_null($connection)) {
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- }
- return @pg_affected_rows($result);
- }
-
- // }}}
- // {{{ _modifyQuery()
-
- /**
- * Changes a query string for various DBMS specific reasons
- *
- * @param string $query query to modify
- * @param boolean $is_manip if it is a DML query
- * @param integer $limit limit the number of rows
- * @param integer $offset start reading from given offset
- * @return string modified query
- * @access protected
- */
- function _modifyQuery($query, $is_manip, $limit, $offset)
- {
- if ($limit > 0
- && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
- ) {
- $query = rtrim($query);
- if (substr($query, -1) == ';') {
- $query = substr($query, 0, -1);
- }
- if ($is_manip) {
- $query = $this->_modifyManipQuery($query, $limit);
- } else {
- $query.= " LIMIT $limit OFFSET $offset";
- }
- }
- return $query;
- }
-
- // }}}
- // {{{ _modifyManipQuery()
-
- /**
- * Changes a manip query string for various DBMS specific reasons
- *
- * @param string $query query to modify
- * @param integer $limit limit the number of rows
- * @return string modified query
- * @access protected
- */
- function _modifyManipQuery($query, $limit)
- {
- $pos = strpos(strtolower($query), 'where');
- $where = $pos ? substr($query, $pos) : '';
-
- $manip_clause = '(\bDELETE\b\s+(?:\*\s+)?\bFROM\b|\bUPDATE\b)';
- $from_clause = '([\w\.]+)';
- $where_clause = '(?:(.*)\bWHERE\b\s+(.*))|(.*)';
- $pattern = '/^'. $manip_clause . '\s+' . $from_clause .'(?:\s)*(?:'. $where_clause .')?$/i';
- $matches = preg_match($pattern, $query, $match);
- if ($matches) {
- $manip = $match[1];
- $from = $match[2];
- $what = (count($matches) == 6) ? $match[5] : $match[3];
- return $manip.' '.$from.' '.$what.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')';
- }
- //return error?
- return $query;
- }
-
- // }}}
- // {{{ getServerVersion()
-
- /**
- * return version information about the server
- *
- * @param bool $native determines if the raw version string should be returned
- * @return mixed array/string with version information or MDB2 error object
- * @access public
- */
- function getServerVersion($native = false)
- {
- $query = 'SHOW SERVER_VERSION';
- if ($this->connected_server_info) {
- $server_info = $this->connected_server_info;
- } else {
- $server_info = $this->queryOne($query, 'text');
- if (PEAR::isError($server_info)) {
- return $server_info;
- }
- }
- // cache server_info
- $this->connected_server_info = $server_info;
- if (!$native && !PEAR::isError($server_info)) {
- $tmp = explode('.', $server_info, 3);
- if (empty($tmp[2])
- && isset($tmp[1])
- && preg_match('/(\d+)(.*)/', $tmp[1], $tmp2)
- ) {
- $server_info = array(
- 'major' => $tmp[0],
- 'minor' => $tmp2[1],
- 'patch' => null,
- 'extra' => $tmp2[2],
- 'native' => $server_info,
- );
- } else {
- $server_info = array(
- 'major' => isset($tmp[0]) ? $tmp[0] : null,
- 'minor' => isset($tmp[1]) ? $tmp[1] : null,
- 'patch' => isset($tmp[2]) ? $tmp[2] : null,
- 'extra' => null,
- 'native' => $server_info,
- );
- }
- }
- return $server_info;
- }
-
- // }}}
- // {{{ prepare()
-
- /**
- * 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 $query the query to prepare
- * @param mixed $types array that contains the types of the placeholders
- * @param mixed $result_types 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 $lobs key (field) value (parameter) pair for all lob placeholders
- * @return mixed resource handle for the prepared query on success, a MDB2
- * error on failure
- * @access public
- * @see bindParam, execute
- */
- function &prepare($query, $types = null, $result_types = null, $lobs = array())
- {
- if ($this->options['emulate_prepared']) {
- $obj =& parent::prepare($query, $types, $result_types, $lobs);
- return $obj;
- }
- $is_manip = ($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;
- }
- $pgtypes = function_exists('pg_prepare') ? false : array();
- if ($pgtypes !== false && !empty($types)) {
- $this->loadModule('Datatype', null, true);
- }
- $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
- $placeholder_type_guess = $placeholder_type = null;
- $question = '?';
- $colon = ':';
- $positions = array();
- $position = $parameter = 0;
- while ($position < strlen($query)) {
- $q_position = strpos($query, $question, $position);
- $c_position = strpos($query, $colon, $position);
- //skip "::type" cast ("select id::varchar(20) from sometable where name=?")
- $doublecolon_position = strpos($query, '::', $position);
- if ($doublecolon_position !== false && $doublecolon_position == $c_position) {
- $c_position = strpos($query, $colon, $position+2);
- }
- if ($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 == ':') {
- } else {
- $types = array_values($types);
- }
- }
- }
- if ($placeholder_type_guess == '?') {
- $length = 1;
- $name = $parameter;
- } else {
- $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
- $param = preg_replace($regexp, '\\1', $query);
- if ($param === '') {
- $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
- 'named parameter name must match "bindname_format" option', __FUNCTION__);
- return $err;
- }
- $length = strlen($param) + 1;
- $name = $param;
- }
- if ($pgtypes !== false) {
- if (is_array($types) && array_key_exists($name, $types)) {
- $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$name]);
- } elseif (is_array($types) && array_key_exists($parameter, $types)) {
- $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$parameter]);
- } else {
- $pgtypes[] = 'text';
- }
- }
- if (($key_parameter = array_search($name, $positions))) {
- $next_parameter = 1;
- foreach ($positions as $key => $value) {
- if ($key_parameter == $key) {
- break;
- }
- ++$next_parameter;
- }
- } else {
- ++$parameter;
- $next_parameter = $parameter;
- $positions[] = $name;
- }
- $query = substr_replace($query, '$'.$parameter, $position, $length);
- $position = $p_position + strlen($parameter);
- } else {
- $position = $p_position;
- }
- }
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- static $prep_statement_counter = 1;
- $statement_name = sprintf($this->options['statement_format'], $this->phptype, $prep_statement_counter++ . sha1(microtime() + mt_rand()));
- $statement_name = substr(strtolower($statement_name), 0, $this->options['max_identifiers_length']);
- if ($pgtypes === false) {
- $result = @pg_prepare($connection, $statement_name, $query);
- if (!$result) {
- $err =& $this->raiseError(null, null, null,
- 'Unable to create prepared statement handle', __FUNCTION__);
- return $err;
- }
- } else {
- $types_string = '';
- if ($pgtypes) {
- $types_string = ' ('.implode(', ', $pgtypes).') ';
- }
- $query = 'PREPARE '.$statement_name.$types_string.' AS '.$query;
- $statement =& $this->_doQuery($query, true, $connection);
- if (PEAR::isError($statement)) {
- return $statement;
- }
- }
-
- $class_name = 'MDB2_Statement_'.$this->phptype;
- $obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
- $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
- return $obj;
- }
-
- // }}}
- // {{{ function getSequenceName($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)
- {
- if (false === $this->options['disable_smart_seqname']) {
- if (strpos($sqn, '_') !== false) {
- list($table, $field) = explode('_', $sqn, 2);
- }
- $schema_list = $this->queryOne("SELECT array_to_string(current_schemas(false), ',')");
- if (PEAR::isError($schema_list) || empty($schema_list) || count($schema_list) < 2) {
- $order_by = ' a.attnum';
- $schema_clause = ' AND n.nspname=current_schema()';
- } else {
- $schemas = explode(',', $schema_list);
- $schema_clause = ' AND n.nspname IN ('.$schema_list.')';
- $counter = 1;
- $order_by = ' CASE ';
- foreach ($schemas as $schema) {
- $order_by .= ' WHEN n.nspname='.$schema.' THEN '.$counter++;
- }
- $order_by .= ' ELSE '.$counter.' END, a.attnum';
- }
-
- $query = "SELECT substring((SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128)
- FROM pg_attrdef d
- WHERE d.adrelid = a.attrelid
- AND d.adnum = a.attnum
- AND a.atthasdef
- ) FROM 'nextval[^'']*''([^'']*)')
- FROM pg_attribute a
- LEFT JOIN pg_class c ON c.oid = a.attrelid
- LEFT JOIN pg_attrdef d ON d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef
- LEFT JOIN pg_namespace n ON c.relnamespace = n.oid
- WHERE (c.relname = ".$this->quote($sqn, 'text');
- if (!empty($field)) {
- $query .= " OR (c.relname = ".$this->quote($table, 'text')." AND a.attname = ".$this->quote($field, 'text').")";
- }
- $query .= " )"
- .$schema_clause."
- AND NOT a.attisdropped
- AND a.attnum > 0
- AND pg_get_expr(d.adbin, d.adrelid) LIKE 'nextval%'
- ORDER BY ".$order_by;
- $seqname = $this->queryOne($query);
- if (!PEAR::isError($seqname) && !empty($seqname) && is_string($seqname)) {
- return $seqname;
- }
- }
-
- return sprintf($this->options['seqname_format'],
- preg_replace('/[^\w\$.]/i', '_', $sqn));
- }
-
- // }}}
- // {{{ nextID()
-
- /**
- * Returns the next free id of a sequence
- *
- * @param string $seq_name name of the sequence
- * @param boolean $ondemand when true the sequence is
- * automatic created, if it
- * not exists
- * @return mixed MDB2 Error Object or id
- * @access public
- */
- function nextID($seq_name, $ondemand = true)
- {
- $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
- $query = "SELECT NEXTVAL('$sequence_name')";
- $this->pushErrorHandling(PEAR_ERROR_RETURN);
- $this->expectError(MDB2_ERROR_NOSUCHTABLE);
- $result = $this->queryOne($query, 'integer');
- $this->popExpect();
- $this->popErrorHandling();
- if (PEAR::isError($result)) {
- if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
- $this->loadModule('Manager', null, true);
- $result = $this->manager->createSequence($seq_name);
- if (PEAR::isError($result)) {
- return $this->raiseError($result, null, null,
- 'on demand sequence could not be created', __FUNCTION__);
- }
- return $this->nextId($seq_name, false);
- }
- }
- return $result;
- }
-
- // }}}
- // {{{ lastInsertID()
-
- /**
- * Returns the autoincrement ID if supported or $id or fetches the current
- * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
- *
- * @param string $table name of the table into which a new row was inserted
- * @param string $field name of the field into which a new row was inserted
- * @return mixed MDB2 Error Object or id
- * @access public
- */
- function lastInsertID($table = null, $field = null)
- {
- if (empty($table) && empty($field)) {
- return $this->queryOne('SELECT lastval()', 'integer');
- }
- $seq = $table.(empty($field) ? '' : '_'.$field);
- $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq), true);
- return $this->queryOne("SELECT currval('$sequence_name')", 'integer');
- }
-
- // }}}
- // {{{ currID()
-
- /**
- * Returns the current id of a sequence
- *
- * @param string $seq_name name of the sequence
- * @return mixed MDB2 Error Object or id
- * @access public
- */
- function currID($seq_name)
- {
- $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
- return $this->queryOne("SELECT last_value FROM $sequence_name", 'integer');
- }
-}
-
-/**
- * MDB2 PostGreSQL result driver
- *
- * @package MDB2
- * @category Database
- * @author Paul Cooper <pgc@ucecom.com>
- */
-class MDB2_Result_pgsql extends MDB2_Result_Common
-{
- // }}}
- // {{{ fetchRow()
-
- /**
- * Fetch a row and insert the data into an existing array.
- *
- * @param int $fetchmode how the array data should be indexed
- * @param int $rownum number of the row where the data can be found
- * @return int data array on success, a MDB2 error on failure
- * @access public
- */
- function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
- {
- if (!is_null($rownum)) {
- $seek = $this->seek($rownum);
- if (PEAR::isError($seek)) {
- return $seek;
- }
- }
- if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
- $fetchmode = $this->db->fetchmode;
- }
- if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
- $row = @pg_fetch_array($this->result, null, PGSQL_ASSOC);
- if (is_array($row)
- && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
- ) {
- $row = array_change_key_case($row, $this->db->options['field_case']);
- }
- } else {
- $row = @pg_fetch_row($this->result);
- }
- if (!$row) {
- if ($this->result === false) {
- $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
- 'resultset has already been freed', __FUNCTION__);
- return $err;
- }
- $null = null;
- return $null;
- }
- $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
- $rtrim = false;
- if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
- if (empty($this->types)) {
- $mode += MDB2_PORTABILITY_RTRIM;
- } else {
- $rtrim = true;
- }
- }
- if ($mode) {
- $this->db->_fixResultArrayValues($row, $mode);
- }
- if (!empty($this->types)) {
- $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
- }
- if (!empty($this->values)) {
- $this->_assignBindColumns($row);
- }
- if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
- $object_class = $this->db->options['fetch_class'];
- if ($object_class == 'stdClass') {
- $row = (object) $row;
- } else {
- $row = new $object_class($row);
- }
- }
- ++$this->rownum;
- return $row;
- }
-
- // }}}
- // {{{ _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()
- {
- $columns = array();
- $numcols = $this->numCols();
- if (PEAR::isError($numcols)) {
- return $numcols;
- }
- for ($column = 0; $column < $numcols; $column++) {
- $column_name = @pg_field_name($this->result, $column);
- $columns[$column_name] = $column;
- }
- if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
- $columns = array_change_key_case($columns, $this->db->options['field_case']);
- }
- return $columns;
- }
-
- // }}}
- // {{{ numCols()
-
- /**
- * Count the number of columns returned by the DBMS in a query result.
- *
- * @access public
- * @return mixed integer value with the number of columns, a MDB2 error
- * on failure
- */
- function numCols()
- {
- $cols = @pg_num_fields($this->result);
- if (is_null($cols)) {
- if ($this->result === false) {
- return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
- 'resultset has already been freed', __FUNCTION__);
- } elseif (is_null($this->result)) {
- return count($this->types);
- }
- return $this->db->raiseError(null, null, null,
- 'Could not get column count', __FUNCTION__);
- }
- return $cols;
- }
-
- // }}}
- // {{{ 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()
- {
- $connection = $this->db->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- if (!($this->result = @pg_get_result($connection))) {
- return false;
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ free()
-
- /**
- * Free the internal resources associated with result.
- *
- * @return boolean true on success, false if result is invalid
- * @access public
- */
- function free()
- {
- if (is_resource($this->result) && $this->db->connection) {
- $free = @pg_free_result($this->result);
- if ($free === false) {
- return $this->db->raiseError(null, null, null,
- 'Could not free result', __FUNCTION__);
- }
- }
- $this->result = false;
- return MDB2_OK;
- }
-}
-
-/**
- * MDB2 PostGreSQL buffered result driver
- *
- * @package MDB2
- * @category Database
- * @author Paul Cooper <pgc@ucecom.com>
- */
-class MDB2_BufferedResult_pgsql extends MDB2_Result_pgsql
-{
- // {{{ seek()
-
- /**
- * Seek to a specific row in a result set
- *
- * @param int $rownum number of the row where the data can be found
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function seek($rownum = 0)
- {
- if ($this->rownum != ($rownum - 1) && !@pg_result_seek($this->result, $rownum)) {
- if ($this->result === false) {
- return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
- 'resultset has already been freed', __FUNCTION__);
- } elseif (is_null($this->result)) {
- return MDB2_OK;
- }
- return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
- 'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
- }
- $this->rownum = $rownum - 1;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ valid()
-
- /**
- * Check if the end of the result set has been reached
- *
- * @return mixed true or false on sucess, a MDB2 error on failure
- * @access public
- */
- function valid()
- {
- $numrows = $this->numRows();
- if (PEAR::isError($numrows)) {
- return $numrows;
- }
- return $this->rownum < ($numrows - 1);
- }
-
- // }}}
- // {{{ numRows()
-
- /**
- * Returns the number of rows in a result object
- *
- * @return mixed MDB2 Error Object or the number of rows
- * @access public
- */
- function numRows()
- {
- $rows = @pg_num_rows($this->result);
- if (is_null($rows)) {
- if ($this->result === false) {
- return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
- 'resultset has already been freed', __FUNCTION__);
- } elseif (is_null($this->result)) {
- return 0;
- }
- return $this->db->raiseError(null, null, null,
- 'Could not get row count', __FUNCTION__);
- }
- return $rows;
- }
-}
-
-/**
- * MDB2 PostGreSQL statement driver
- *
- * @package MDB2
- * @category Database
- * @author Paul Cooper <pgc@ucecom.com>
- */
-class MDB2_Statement_pgsql extends MDB2_Statement_Common
-{
- // {{{ _execute()
-
- /**
- * Execute a prepared query statement helper method.
- *
- * @param mixed $result_class string which specifies which result class to use
- * @param mixed $result_wrap_class string which specifies which class to wrap results in
- * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
- * @access private
- */
- function &_execute($result_class = true, $result_wrap_class = false)
- {
- if (is_null($this->statement)) {
- $result =& parent::_execute($result_class, $result_wrap_class);
- return $result;
- }
- $this->db->last_query = $this->query;
- $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values));
- if ($this->db->getOption('disable_query')) {
- $result = $this->is_manip ? 0 : null;
- return $result;
- }
-
- $connection = $this->db->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- $query = false;
- $parameters = array();
- // todo: disabled until pg_execute() bytea issues are cleared up
- if (true || !function_exists('pg_execute')) {
- $query = 'EXECUTE '.$this->statement;
- }
- if (!empty($this->positions)) {
- foreach ($this->positions as $parameter) {
- if (!array_key_exists($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];
- $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
- if (is_resource($value) || $type == 'clob' || $type == 'blob' || $this->db->options['lob_allow_url_include']) {
- if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
- if ($match[1] == 'file://') {
- $value = $match[2];
- }
- $value = @fopen($value, 'r');
- $close = true;
- }
- if (is_resource($value)) {
- $data = '';
- while (!@feof($value)) {
- $data.= @fread($value, $this->db->options['lob_buffer_length']);
- }
- if ($close) {
- @fclose($value);
- }
- $value = $data;
- }
- }
- $quoted = $this->db->quote($value, $type, $query);
- if (PEAR::isError($quoted)) {
- return $quoted;
- }
- $parameters[] = $quoted;
- }
- if ($query) {
- $query.= ' ('.implode(', ', $parameters).')';
- }
- }
-
- if (!$query) {
- $result = @pg_execute($connection, $this->statement, $parameters);
- if (!$result) {
- $err =& $this->db->raiseError(null, null, null,
- 'Unable to execute statement', __FUNCTION__);
- return $err;
- }
- } else {
- $result = $this->db->_doQuery($query, $this->is_manip, $connection);
- if (PEAR::isError($result)) {
- return $result;
- }
- }
-
- if ($this->is_manip) {
- $affected_rows = $this->db->_affectedRows($connection, $result);
- return $affected_rows;
- }
-
- $result =& $this->db->_wrapResult($result, $this->result_types,
- $result_class, $result_wrap_class, $this->limit, $this->offset);
- $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result));
- return $result;
- }
-
- // }}}
- // {{{ free()
-
- /**
- * Release resources allocated for the specified prepared query.
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function free()
- {
- if (is_null($this->positions)) {
- return $this->db->raiseError(MDB2_ERROR, null, null,
- 'Prepared statement has already been freed', __FUNCTION__);
- }
- $result = MDB2_OK;
-
- if (!is_null($this->statement)) {
- $connection = $this->db->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- $query = 'DEALLOCATE PREPARE '.$this->statement;
- $result = $this->db->_doQuery($query, true, $connection);
- }
-
- parent::free();
- return $result;
- }
-}
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2008 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: Paul Cooper <pgc@ucecom.com> |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php 292715 2009-12-28 14:06:34Z quipo $
+
+/**
+ * MDB2 PostGreSQL driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Driver_pgsql extends MDB2_Driver_Common
+{
+ // {{{ properties
+ var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => '\\');
+
+ var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
+ // }}}
+ // {{{ constructor
+
+ /**
+ * Constructor
+ */
+ function __construct()
+ {
+ parent::__construct();
+
+ $this->phptype = 'pgsql';
+ $this->dbsyntax = 'pgsql';
+
+ $this->supported['sequences'] = true;
+ $this->supported['indexes'] = true;
+ $this->supported['affected_rows'] = true;
+ $this->supported['summary_functions'] = true;
+ $this->supported['order_by_text'] = true;
+ $this->supported['transactions'] = true;
+ $this->supported['savepoints'] = true;
+ $this->supported['current_id'] = true;
+ $this->supported['limit_queries'] = true;
+ $this->supported['LOBs'] = true;
+ $this->supported['replace'] = 'emulated';
+ $this->supported['sub_selects'] = true;
+ $this->supported['triggers'] = true;
+ $this->supported['auto_increment'] = 'emulated';
+ $this->supported['primary_key'] = true;
+ $this->supported['result_introspection'] = true;
+ $this->supported['prepared_statements'] = true;
+ $this->supported['identifier_quoting'] = true;
+ $this->supported['pattern_escaping'] = true;
+ $this->supported['new_link'] = true;
+
+ $this->options['DBA_username'] = false;
+ $this->options['DBA_password'] = false;
+ $this->options['multi_query'] = false;
+ $this->options['disable_smart_seqname'] = true;
+ $this->options['max_identifiers_length'] = 63;
+ }
+
+ // }}}
+ // {{{ errorInfo()
+
+ /**
+ * This method is used to collect information about an error
+ *
+ * @param integer $error
+ * @return array
+ * @access public
+ */
+ function errorInfo($error = null)
+ {
+ // Fall back to MDB2_ERROR if there was no mapping.
+ $error_code = MDB2_ERROR;
+
+ $native_msg = '';
+ if (is_resource($error)) {
+ $native_msg = @pg_result_error($error);
+ } elseif ($this->connection) {
+ $native_msg = @pg_last_error($this->connection);
+ if (!$native_msg && @pg_connection_status($this->connection) === PGSQL_CONNECTION_BAD) {
+ $native_msg = 'Database connection has been lost.';
+ $error_code = MDB2_ERROR_CONNECT_FAILED;
+ }
+ } else {
+ $native_msg = @pg_last_error();
+ }
+
+ static $error_regexps;
+ if (empty($error_regexps)) {
+ $error_regexps = array(
+ '/column .* (of relation .*)?does not exist/i'
+ => MDB2_ERROR_NOSUCHFIELD,
+ '/(relation|sequence|table).*does not exist|class .* not found/i'
+ => MDB2_ERROR_NOSUCHTABLE,
+ '/database .* does not exist/'
+ => MDB2_ERROR_NOT_FOUND,
+ '/constraint .* does not exist/'
+ => MDB2_ERROR_NOT_FOUND,
+ '/index .* does not exist/'
+ => MDB2_ERROR_NOT_FOUND,
+ '/database .* already exists/i'
+ => MDB2_ERROR_ALREADY_EXISTS,
+ '/relation .* already exists/i'
+ => MDB2_ERROR_ALREADY_EXISTS,
+ '/(divide|division) by zero$/i'
+ => MDB2_ERROR_DIVZERO,
+ '/pg_atoi: error in .*: can\'t parse /i'
+ => MDB2_ERROR_INVALID_NUMBER,
+ '/invalid input syntax for( type)? (integer|numeric)/i'
+ => MDB2_ERROR_INVALID_NUMBER,
+ '/value .* is out of range for type \w*int/i'
+ => MDB2_ERROR_INVALID_NUMBER,
+ '/integer out of range/i'
+ => MDB2_ERROR_INVALID_NUMBER,
+ '/value too long for type character/i'
+ => MDB2_ERROR_INVALID,
+ '/attribute .* not found|relation .* does not have attribute/i'
+ => MDB2_ERROR_NOSUCHFIELD,
+ '/column .* specified in USING clause does not exist in (left|right) table/i'
+ => MDB2_ERROR_NOSUCHFIELD,
+ '/parser: parse error at or near/i'
+ => MDB2_ERROR_SYNTAX,
+ '/syntax error at/'
+ => MDB2_ERROR_SYNTAX,
+ '/column reference .* is ambiguous/i'
+ => MDB2_ERROR_SYNTAX,
+ '/permission denied/'
+ => MDB2_ERROR_ACCESS_VIOLATION,
+ '/violates not-null constraint/'
+ => MDB2_ERROR_CONSTRAINT_NOT_NULL,
+ '/violates [\w ]+ constraint/'
+ => MDB2_ERROR_CONSTRAINT,
+ '/referential integrity violation/'
+ => MDB2_ERROR_CONSTRAINT,
+ '/more expressions than target columns/i'
+ => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+ );
+ }
+ if (is_numeric($error) && $error < 0) {
+ $error_code = $error;
+ } else {
+ foreach ($error_regexps as $regexp => $code) {
+ if (preg_match($regexp, $native_msg)) {
+ $error_code = $code;
+ break;
+ }
+ }
+ }
+ return array($error_code, null, $native_msg);
+ }
+
+ // }}}
+ // {{{ escape()
+
+ /**
+ * Quotes a string so it can be safely used in a query. It will quote
+ * the text so it can safely be used within a query.
+ *
+ * @param string the input string to quote
+ * @param bool escape wildcards
+ *
+ * @return string quoted string
+ *
+ * @access public
+ */
+ function escape($text, $escape_wildcards = false)
+ {
+ if ($escape_wildcards) {
+ $text = $this->escapePattern($text);
+ }
+ $connection = $this->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+ if (is_resource($connection) && version_compare(PHP_VERSION, '5.2.0RC5', '>=')) {
+ $text = @pg_escape_string($connection, $text);
+ } else {
+ $text = @pg_escape_string($text);
+ }
+ return $text;
+ }
+
+ // }}}
+ // {{{ beginTransaction()
+
+ /**
+ * Start a transaction or set a savepoint.
+ *
+ * @param string name of a savepoint to set
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ *
+ * @access public
+ */
+ function beginTransaction($savepoint = null)
+ {
+ $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+ if (null !== $savepoint) {
+ if (!$this->in_transaction) {
+ return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+ 'savepoint cannot be released when changes are auto committed', __FUNCTION__);
+ }
+ $query = 'SAVEPOINT '.$savepoint;
+ return $this->_doQuery($query, true);
+ }
+ if ($this->in_transaction) {
+ return MDB2_OK; //nothing to do
+ }
+ if (!$this->destructor_registered && $this->opened_persistent) {
+ $this->destructor_registered = true;
+ register_shutdown_function('MDB2_closeOpenTransactions');
+ }
+ $result =& $this->_doQuery('BEGIN', true);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ $this->in_transaction = true;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ commit()
+
+ /**
+ * Commit the database changes done during a transaction that is in
+ * progress or release a savepoint. This function may only be called when
+ * auto-committing is disabled, otherwise it will fail. Therefore, a new
+ * transaction is implicitly started after committing the pending changes.
+ *
+ * @param string name of a savepoint to release
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ *
+ * @access public
+ */
+ function commit($savepoint = null)
+ {
+ $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+ if (!$this->in_transaction) {
+ return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+ 'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
+ }
+ if (null !== $savepoint) {
+ $query = 'RELEASE SAVEPOINT '.$savepoint;
+ return $this->_doQuery($query, true);
+ }
+
+ $result =& $this->_doQuery('COMMIT', true);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ $this->in_transaction = false;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ rollback()
+
+ /**
+ * Cancel any database changes done during a transaction or since a specific
+ * savepoint that is in progress. This function may only be called when
+ * auto-committing is disabled, otherwise it will fail. Therefore, a new
+ * transaction is implicitly started after canceling the pending changes.
+ *
+ * @param string name of a savepoint to rollback to
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ *
+ * @access public
+ */
+ function rollback($savepoint = null)
+ {
+ $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
+ if (!$this->in_transaction) {
+ return $this->raiseError(MDB2_ERROR_INVALID, null, null,
+ 'rollback cannot be done changes are auto committed', __FUNCTION__);
+ }
+ if (null !== $savepoint) {
+ $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
+ return $this->_doQuery($query, true);
+ }
+
+ $query = 'ROLLBACK';
+ $result =& $this->_doQuery($query, true);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ $this->in_transaction = false;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ function setTransactionIsolation()
+
+ /**
+ * Set the transacton isolation level.
+ *
+ * @param string standard isolation level
+ * READ UNCOMMITTED (allows dirty reads)
+ * READ COMMITTED (prevents dirty reads)
+ * REPEATABLE READ (prevents nonrepeatable reads)
+ * SERIALIZABLE (prevents phantom reads)
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ *
+ * @access public
+ * @since 2.1.1
+ */
+ function setTransactionIsolation($isolation)
+ {
+ $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
+ switch ($isolation) {
+ case 'READ UNCOMMITTED':
+ case 'READ COMMITTED':
+ case 'REPEATABLE READ':
+ case 'SERIALIZABLE':
+ break;
+ default:
+ return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+ 'isolation level is not supported: '.$isolation, __FUNCTION__);
+ }
+
+ $query = "SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL $isolation";
+ return $this->_doQuery($query, true);
+ }
+
+ // }}}
+ // {{{ _doConnect()
+
+ /**
+ * Do the grunt work of connecting to the database
+ *
+ * @return mixed connection resource on success, MDB2 Error Object on failure
+ * @access protected
+ */
+ function _doConnect($username, $password, $database_name, $persistent = false)
+ {
+ if (!PEAR::loadExtension($this->phptype)) {
+ return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+ 'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
+ }
+
+ if ($database_name == '') {
+ $database_name = 'template1';
+ }
+
+ $protocol = $this->dsn['protocol'] ? $this->dsn['protocol'] : 'tcp';
+
+ $params = array('');
+ if ($protocol == 'tcp') {
+ if ($this->dsn['hostspec']) {
+ $params[0].= 'host=' . $this->dsn['hostspec'];
+ }
+ if ($this->dsn['port']) {
+ $params[0].= ' port=' . $this->dsn['port'];
+ }
+ } elseif ($protocol == 'unix') {
+ // Allow for pg socket in non-standard locations.
+ if ($this->dsn['socket']) {
+ $params[0].= 'host=' . $this->dsn['socket'];
+ }
+ if ($this->dsn['port']) {
+ $params[0].= ' port=' . $this->dsn['port'];
+ }
+ }
+ if ($database_name) {
+ $params[0].= ' dbname=\'' . addslashes($database_name) . '\'';
+ }
+ if ($username) {
+ $params[0].= ' user=\'' . addslashes($username) . '\'';
+ }
+ if ($password) {
+ $params[0].= ' password=\'' . addslashes($password) . '\'';
+ }
+ if (!empty($this->dsn['options'])) {
+ $params[0].= ' options=' . $this->dsn['options'];
+ }
+ if (!empty($this->dsn['tty'])) {
+ $params[0].= ' tty=' . $this->dsn['tty'];
+ }
+ if (!empty($this->dsn['connect_timeout'])) {
+ $params[0].= ' connect_timeout=' . $this->dsn['connect_timeout'];
+ }
+ if (!empty($this->dsn['sslmode'])) {
+ $params[0].= ' sslmode=' . $this->dsn['sslmode'];
+ }
+ if (!empty($this->dsn['service'])) {
+ $params[0].= ' service=' . $this->dsn['service'];
+ }
+
+ if ($this->_isNewLinkSet()) {
+ if (version_compare(phpversion(), '4.3.0', '>=')) {
+ $params[] = PGSQL_CONNECT_FORCE_NEW;
+ }
+ }
+
+ $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect';
+ $connection = @call_user_func_array($connect_function, $params);
+ if (!$connection) {
+ return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
+ 'unable to establish a connection', __FUNCTION__);
+ }
+
+ if (empty($this->dsn['disable_iso_date'])) {
+ if (!@pg_query($connection, "SET SESSION DATESTYLE = 'ISO'")) {
+ return $this->raiseError(null, null, null,
+ 'Unable to set date style to iso', __FUNCTION__);
+ }
+ }
+
+ if (!empty($this->dsn['charset'])) {
+ $result = $this->setCharset($this->dsn['charset'], $connection);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+
+ // Enable extra compatibility settings on 8.2 and later
+ if (function_exists('pg_parameter_status')) {
+ $version = pg_parameter_status($connection, 'server_version');
+ if ($version == false) {
+ return $this->raiseError(null, null, null,
+ 'Unable to retrieve server version', __FUNCTION__);
+ }
+ $version = explode ('.', $version);
+ if ( $version['0'] > 8
+ || ($version['0'] == 8 && $version['1'] >= 2)
+ ) {
+ if (!@pg_query($connection, "SET SESSION STANDARD_CONFORMING_STRINGS = OFF")) {
+ return $this->raiseError(null, null, null,
+ 'Unable to set standard_conforming_strings to off', __FUNCTION__);
+ }
+
+ if (!@pg_query($connection, "SET SESSION ESCAPE_STRING_WARNING = OFF")) {
+ return $this->raiseError(null, null, null,
+ 'Unable to set escape_string_warning to off', __FUNCTION__);
+ }
+ }
+ }
+
+ return $connection;
+ }
+
+ // }}}
+ // {{{ connect()
+
+ /**
+ * Connect to the database
+ *
+ * @return true on success, MDB2 Error Object on failure
+ * @access public
+ */
+ function connect()
+ {
+ if (is_resource($this->connection)) {
+ //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
+ if (MDB2::areEquals($this->connected_dsn, $this->dsn)
+ && $this->connected_database_name == $this->database_name
+ && ($this->opened_persistent == $this->options['persistent'])
+ ) {
+ return MDB2_OK;
+ }
+ $this->disconnect(false);
+ }
+
+ if ($this->database_name) {
+ $connection = $this->_doConnect($this->dsn['username'],
+ $this->dsn['password'],
+ $this->database_name,
+ $this->options['persistent']);
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+
+ $this->connection = $connection;
+ $this->connected_dsn = $this->dsn;
+ $this->connected_database_name = $this->database_name;
+ $this->opened_persistent = $this->options['persistent'];
+ $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
+ }
+
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ setCharset()
+
+ /**
+ * Set the charset on the current connection
+ *
+ * @param string charset
+ * @param resource connection handle
+ *
+ * @return true on success, MDB2 Error Object on failure
+ */
+ function setCharset($charset, $connection = null)
+ {
+ if (null === $connection) {
+ $connection = $this->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+ }
+ if (is_array($charset)) {
+ $charset = array_shift($charset);
+ $this->warnings[] = 'postgresql does not support setting client collation';
+ }
+ $result = @pg_set_client_encoding($connection, $charset);
+ if ($result == -1) {
+ return $this->raiseError(null, null, null,
+ 'Unable to set client charset: '.$charset, __FUNCTION__);
+ }
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ databaseExists()
+
+ /**
+ * check if given database name is exists?
+ *
+ * @param string $name name of the database that should be checked
+ *
+ * @return mixed true/false on success, a MDB2 error on failure
+ * @access public
+ */
+ function databaseExists($name)
+ {
+ $res = $this->_doConnect($this->dsn['username'],
+ $this->dsn['password'],
+ $this->escape($name),
+ $this->options['persistent']);
+ if (!PEAR::isError($res)) {
+ return true;
+ }
+
+ return false;
+ }
+
+ // }}}
+ // {{{ disconnect()
+
+ /**
+ * Log out and disconnect from the database.
+ *
+ * @param boolean $force if the disconnect should be forced even if the
+ * connection is opened persistently
+ * @return mixed true on success, false if not connected and error
+ * object on error
+ * @access public
+ */
+ function disconnect($force = true)
+ {
+ if (is_resource($this->connection)) {
+ if ($this->in_transaction) {
+ $dsn = $this->dsn;
+ $database_name = $this->database_name;
+ $persistent = $this->options['persistent'];
+ $this->dsn = $this->connected_dsn;
+ $this->database_name = $this->connected_database_name;
+ $this->options['persistent'] = $this->opened_persistent;
+ $this->rollback();
+ $this->dsn = $dsn;
+ $this->database_name = $database_name;
+ $this->options['persistent'] = $persistent;
+ }
+
+ if (!$this->opened_persistent || $force) {
+ $ok = @pg_close($this->connection);
+ if (!$ok) {
+ return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED,
+ null, null, null, __FUNCTION__);
+ }
+ }
+ } else {
+ return false;
+ }
+ return parent::disconnect($force);
+ }
+
+ // }}}
+ // {{{ standaloneQuery()
+
+ /**
+ * execute a query as DBA
+ *
+ * @param string $query the SQL query
+ * @param mixed $types array that contains the types of the columns in
+ * the result set
+ * @param boolean $is_manip if the query is a manipulation query
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function &standaloneQuery($query, $types = null, $is_manip = false)
+ {
+ $user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username'];
+ $pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password'];
+ $connection = $this->_doConnect($user, $pass, $this->database_name, $this->options['persistent']);
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+
+ $offset = $this->offset;
+ $limit = $this->limit;
+ $this->offset = $this->limit = 0;
+ $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
+
+ $result =& $this->_doQuery($query, $is_manip, $connection, $this->database_name);
+ if (!PEAR::isError($result)) {
+ if ($is_manip) {
+ $result = $this->_affectedRows($connection, $result);
+ } else {
+ $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
+ }
+ }
+
+ @pg_close($connection);
+ return $result;
+ }
+
+ // }}}
+ // {{{ _doQuery()
+
+ /**
+ * Execute a query
+ * @param string $query query
+ * @param boolean $is_manip if the query is a manipulation query
+ * @param resource $connection
+ * @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 = $result;
+ }
+ if ($this->options['disable_query']) {
+ $result = $is_manip ? 0 : null;
+ return $result;
+ }
+
+ if (null === $connection) {
+ $connection = $this->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+ }
+
+ $function = $this->options['multi_query'] ? 'pg_send_query' : 'pg_query';
+ $result = @$function($connection, $query);
+ if (!$result) {
+ $err =& $this->raiseError(null, null, null,
+ 'Could not execute statement', __FUNCTION__);
+ return $err;
+ } elseif ($this->options['multi_query']) {
+ if (!($result = @pg_get_result($connection))) {
+ $err =& $this->raiseError(null, null, null,
+ 'Could not get the first result from a multi query', __FUNCTION__);
+ return $err;
+ }
+ }
+
+ $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
+ return $result;
+ }
+
+ // }}}
+ // {{{ _affectedRows()
+
+ /**
+ * Returns the number of rows affected
+ *
+ * @param resource $result
+ * @param resource $connection
+ * @return mixed MDB2 Error Object or the number of rows affected
+ * @access private
+ */
+ function _affectedRows($connection, $result = null)
+ {
+ if (null === $connection) {
+ $connection = $this->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+ }
+ return @pg_affected_rows($result);
+ }
+
+ // }}}
+ // {{{ _modifyQuery()
+
+ /**
+ * Changes a query string for various DBMS specific reasons
+ *
+ * @param string $query query to modify
+ * @param boolean $is_manip if it is a DML query
+ * @param integer $limit limit the number of rows
+ * @param integer $offset start reading from given offset
+ * @return string modified query
+ * @access protected
+ */
+ function _modifyQuery($query, $is_manip, $limit, $offset)
+ {
+ if ($limit > 0
+ && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
+ ) {
+ $query = rtrim($query);
+ if (substr($query, -1) == ';') {
+ $query = substr($query, 0, -1);
+ }
+ if ($is_manip) {
+ $query = $this->_modifyManipQuery($query, $limit);
+ } else {
+ $query.= " LIMIT $limit OFFSET $offset";
+ }
+ }
+ return $query;
+ }
+
+ // }}}
+ // {{{ _modifyManipQuery()
+
+ /**
+ * Changes a manip query string for various DBMS specific reasons
+ *
+ * @param string $query query to modify
+ * @param integer $limit limit the number of rows
+ * @return string modified query
+ * @access protected
+ */
+ function _modifyManipQuery($query, $limit)
+ {
+ $pos = strpos(strtolower($query), 'where');
+ $where = $pos ? substr($query, $pos) : '';
+
+ $manip_clause = '(\bDELETE\b\s+(?:\*\s+)?\bFROM\b|\bUPDATE\b)';
+ $from_clause = '([\w\.]+)';
+ $where_clause = '(?:(.*)\bWHERE\b\s+(.*))|(.*)';
+ $pattern = '/^'. $manip_clause . '\s+' . $from_clause .'(?:\s)*(?:'. $where_clause .')?$/i';
+ $matches = preg_match($pattern, $query, $match);
+ if ($matches) {
+ $manip = $match[1];
+ $from = $match[2];
+ $what = (count($matches) == 6) ? $match[5] : $match[3];
+ return $manip.' '.$from.' '.$what.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')';
+ }
+ //return error?
+ return $query;
+ }
+
+ // }}}
+ // {{{ getServerVersion()
+
+ /**
+ * return version information about the server
+ *
+ * @param bool $native determines if the raw version string should be returned
+ * @return mixed array/string with version information or MDB2 error object
+ * @access public
+ */
+ function getServerVersion($native = false)
+ {
+ $query = 'SHOW SERVER_VERSION';
+ if ($this->connected_server_info) {
+ $server_info = $this->connected_server_info;
+ } else {
+ $server_info = $this->queryOne($query, 'text');
+ if (PEAR::isError($server_info)) {
+ return $server_info;
+ }
+ }
+ // cache server_info
+ $this->connected_server_info = $server_info;
+ if (!$native && !PEAR::isError($server_info)) {
+ $tmp = explode('.', $server_info, 3);
+ if (empty($tmp[2])
+ && isset($tmp[1])
+ && preg_match('/(\d+)(.*)/', $tmp[1], $tmp2)
+ ) {
+ $server_info = array(
+ 'major' => $tmp[0],
+ 'minor' => $tmp2[1],
+ 'patch' => null,
+ 'extra' => $tmp2[2],
+ 'native' => $server_info,
+ );
+ } else {
+ $server_info = array(
+ 'major' => isset($tmp[0]) ? $tmp[0] : null,
+ 'minor' => isset($tmp[1]) ? $tmp[1] : null,
+ 'patch' => isset($tmp[2]) ? $tmp[2] : null,
+ 'extra' => null,
+ 'native' => $server_info,
+ );
+ }
+ }
+ return $server_info;
+ }
+
+ // }}}
+ // {{{ prepare()
+
+ /**
+ * 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 $query the query to prepare
+ * @param mixed $types array that contains the types of the placeholders
+ * @param mixed $result_types 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 $lobs key (field) value (parameter) pair for all lob placeholders
+ * @return mixed resource handle for the prepared query on success, a MDB2
+ * error on failure
+ * @access public
+ * @see bindParam, execute
+ */
+ function &prepare($query, $types = null, $result_types = null, $lobs = array())
+ {
+ if ($this->options['emulate_prepared']) {
+ $obj =& parent::prepare($query, $types, $result_types, $lobs);
+ return $obj;
+ }
+ $is_manip = ($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;
+ }
+ $pgtypes = function_exists('pg_prepare') ? false : array();
+ if ($pgtypes !== false && !empty($types)) {
+ $this->loadModule('Datatype', null, true);
+ }
+ $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
+ $placeholder_type_guess = $placeholder_type = null;
+ $question = '?';
+ $colon = ':';
+ $positions = array();
+ $position = $parameter = 0;
+ while ($position < strlen($query)) {
+ $q_position = strpos($query, $question, $position);
+ $c_position = strpos($query, $colon, $position);
+ //skip "::type" cast ("select id::varchar(20) from sometable where name=?")
+ $doublecolon_position = strpos($query, '::', $position);
+ if ($doublecolon_position !== false && $doublecolon_position == $c_position) {
+ $c_position = strpos($query, $colon, $position+2);
+ }
+ if ($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 (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 (null === $placeholder_type) {
+ $placeholder_type = $query[$p_position];
+ $question = $colon = $placeholder_type;
+ if (!empty($types) && is_array($types)) {
+ if ($placeholder_type == ':') {
+ } else {
+ $types = array_values($types);
+ }
+ }
+ }
+ if ($placeholder_type_guess == '?') {
+ $length = 1;
+ $name = $parameter;
+ } else {
+ $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
+ $param = preg_replace($regexp, '\\1', $query);
+ if ($param === '') {
+ $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+ 'named parameter name must match "bindname_format" option', __FUNCTION__);
+ return $err;
+ }
+ $length = strlen($param) + 1;
+ $name = $param;
+ }
+ if ($pgtypes !== false) {
+ if (is_array($types) && array_key_exists($name, $types)) {
+ $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$name]);
+ } elseif (is_array($types) && array_key_exists($parameter, $types)) {
+ $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$parameter]);
+ } else {
+ $pgtypes[] = 'text';
+ }
+ }
+ if (($key_parameter = array_search($name, $positions))) {
+ $next_parameter = 1;
+ foreach ($positions as $key => $value) {
+ if ($key_parameter == $key) {
+ break;
+ }
+ ++$next_parameter;
+ }
+ } else {
+ ++$parameter;
+ $next_parameter = $parameter;
+ $positions[] = $name;
+ }
+ $query = substr_replace($query, '$'.$parameter, $position, $length);
+ $position = $p_position + strlen($parameter);
+ } else {
+ $position = $p_position;
+ }
+ }
+ $connection = $this->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+ static $prep_statement_counter = 1;
+ $statement_name = sprintf($this->options['statement_format'], $this->phptype, $prep_statement_counter++ . sha1(microtime() + mt_rand()));
+ $statement_name = substr(strtolower($statement_name), 0, $this->options['max_identifiers_length']);
+ if (false === $pgtypes) {
+ $result = @pg_prepare($connection, $statement_name, $query);
+ if (!$result) {
+ $err =& $this->raiseError(null, null, null,
+ 'Unable to create prepared statement handle', __FUNCTION__);
+ return $err;
+ }
+ } else {
+ $types_string = '';
+ if ($pgtypes) {
+ $types_string = ' ('.implode(', ', $pgtypes).') ';
+ }
+ $query = 'PREPARE '.$statement_name.$types_string.' AS '.$query;
+ $statement =& $this->_doQuery($query, true, $connection);
+ if (PEAR::isError($statement)) {
+ return $statement;
+ }
+ }
+
+ $class_name = 'MDB2_Statement_'.$this->phptype;
+ $obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
+ $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
+ return $obj;
+ }
+
+ // }}}
+ // {{{ function getSequenceName($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)
+ {
+ if (false === $this->options['disable_smart_seqname']) {
+ if (strpos($sqn, '_') !== false) {
+ list($table, $field) = explode('_', $sqn, 2);
+ }
+ $schema_list = $this->queryOne("SELECT array_to_string(current_schemas(false), ',')");
+ if (PEAR::isError($schema_list) || empty($schema_list) || count($schema_list) < 2) {
+ $order_by = ' a.attnum';
+ $schema_clause = ' AND n.nspname=current_schema()';
+ } else {
+ $schemas = explode(',', $schema_list);
+ $schema_clause = ' AND n.nspname IN ('.$schema_list.')';
+ $counter = 1;
+ $order_by = ' CASE ';
+ foreach ($schemas as $schema) {
+ $order_by .= ' WHEN n.nspname='.$schema.' THEN '.$counter++;
+ }
+ $order_by .= ' ELSE '.$counter.' END, a.attnum';
+ }
+
+ $query = "SELECT substring((SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128)
+ FROM pg_attrdef d
+ WHERE d.adrelid = a.attrelid
+ AND d.adnum = a.attnum
+ AND a.atthasdef
+ ) FROM 'nextval[^'']*''([^'']*)')
+ FROM pg_attribute a
+ LEFT JOIN pg_class c ON c.oid = a.attrelid
+ LEFT JOIN pg_attrdef d ON d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef
+ LEFT JOIN pg_namespace n ON c.relnamespace = n.oid
+ WHERE (c.relname = ".$this->quote($sqn, 'text');
+ if (!empty($field)) {
+ $query .= " OR (c.relname = ".$this->quote($table, 'text')." AND a.attname = ".$this->quote($field, 'text').")";
+ }
+ $query .= " )"
+ .$schema_clause."
+ AND NOT a.attisdropped
+ AND a.attnum > 0
+ AND pg_get_expr(d.adbin, d.adrelid) LIKE 'nextval%'
+ ORDER BY ".$order_by;
+ $seqname = $this->queryOne($query);
+ if (!PEAR::isError($seqname) && !empty($seqname) && is_string($seqname)) {
+ return $seqname;
+ }
+ }
+
+ return parent::getSequenceName($sqn);
+ }
+
+ // }}}
+ // {{{ nextID()
+
+ /**
+ * Returns the next free id of a sequence
+ *
+ * @param string $seq_name name of the sequence
+ * @param boolean $ondemand when true the sequence is
+ * automatic created, if it
+ * not exists
+ * @return mixed MDB2 Error Object or id
+ * @access public
+ */
+ function nextID($seq_name, $ondemand = true)
+ {
+ $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+ $query = "SELECT NEXTVAL('$sequence_name')";
+ $this->pushErrorHandling(PEAR_ERROR_RETURN);
+ $this->expectError(MDB2_ERROR_NOSUCHTABLE);
+ $result = $this->queryOne($query, 'integer');
+ $this->popExpect();
+ $this->popErrorHandling();
+ if (PEAR::isError($result)) {
+ if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
+ $this->loadModule('Manager', null, true);
+ $result = $this->manager->createSequence($seq_name);
+ if (PEAR::isError($result)) {
+ return $this->raiseError($result, null, null,
+ 'on demand sequence could not be created', __FUNCTION__);
+ }
+ return $this->nextId($seq_name, false);
+ }
+ }
+ return $result;
+ }
+
+ // }}}
+ // {{{ lastInsertID()
+
+ /**
+ * Returns the autoincrement ID if supported or $id or fetches the current
+ * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
+ *
+ * @param string $table name of the table into which a new row was inserted
+ * @param string $field name of the field into which a new row was inserted
+ * @return mixed MDB2 Error Object or id
+ * @access public
+ */
+ function lastInsertID($table = null, $field = null)
+ {
+ if (empty($table) && empty($field)) {
+ return $this->queryOne('SELECT lastval()', 'integer');
+ }
+ $seq = $table.(empty($field) ? '' : '_'.$field);
+ $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq), true);
+ return $this->queryOne("SELECT currval('$sequence_name')", 'integer');
+ }
+
+ // }}}
+ // {{{ currID()
+
+ /**
+ * Returns the current id of a sequence
+ *
+ * @param string $seq_name name of the sequence
+ * @return mixed MDB2 Error Object or id
+ * @access public
+ */
+ function currID($seq_name)
+ {
+ $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
+ return $this->queryOne("SELECT last_value FROM $sequence_name", 'integer');
+ }
+}
+
+/**
+ * MDB2 PostGreSQL result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Result_pgsql extends MDB2_Result_Common
+{
+ // }}}
+ // {{{ fetchRow()
+
+ /**
+ * Fetch a row and insert the data into an existing array.
+ *
+ * @param int $fetchmode how the array data should be indexed
+ * @param int $rownum number of the row where the data can be found
+ * @return int data array on success, a MDB2 error on failure
+ * @access public
+ */
+ function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+ {
+ if (null !== $rownum) {
+ $seek = $this->seek($rownum);
+ if (PEAR::isError($seek)) {
+ return $seek;
+ }
+ }
+ if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+ $fetchmode = $this->db->fetchmode;
+ }
+ if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+ $row = @pg_fetch_array($this->result, null, PGSQL_ASSOC);
+ if (is_array($row)
+ && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+ ) {
+ $row = array_change_key_case($row, $this->db->options['field_case']);
+ }
+ } else {
+ $row = @pg_fetch_row($this->result);
+ }
+ if (!$row) {
+ if (false === $this->result) {
+ $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+ 'resultset has already been freed', __FUNCTION__);
+ return $err;
+ }
+ $null = null;
+ return $null;
+ }
+ $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
+ $rtrim = false;
+ if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
+ if (empty($this->types)) {
+ $mode += MDB2_PORTABILITY_RTRIM;
+ } else {
+ $rtrim = true;
+ }
+ }
+ if ($mode) {
+ $this->db->_fixResultArrayValues($row, $mode);
+ }
+ if (!empty($this->types)) {
+ $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
+ }
+ if (!empty($this->values)) {
+ $this->_assignBindColumns($row);
+ }
+ if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+ $object_class = $this->db->options['fetch_class'];
+ if ($object_class == 'stdClass') {
+ $row = (object) $row;
+ } else {
+ $rowObj = new $object_class($row);
+ $row = $rowObj;
+ }
+ }
+ ++$this->rownum;
+ return $row;
+ }
+
+ // }}}
+ // {{{ _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()
+ {
+ $columns = array();
+ $numcols = $this->numCols();
+ if (PEAR::isError($numcols)) {
+ return $numcols;
+ }
+ for ($column = 0; $column < $numcols; $column++) {
+ $column_name = @pg_field_name($this->result, $column);
+ $columns[$column_name] = $column;
+ }
+ if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+ $columns = array_change_key_case($columns, $this->db->options['field_case']);
+ }
+ return $columns;
+ }
+
+ // }}}
+ // {{{ numCols()
+
+ /**
+ * Count the number of columns returned by the DBMS in a query result.
+ *
+ * @access public
+ * @return mixed integer value with the number of columns, a MDB2 error
+ * on failure
+ */
+ function numCols()
+ {
+ $cols = @pg_num_fields($this->result);
+ if (null === $cols) {
+ if (false === $this->result) {
+ return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+ 'resultset has already been freed', __FUNCTION__);
+ }
+ if (null === $this->result) {
+ return count($this->types);
+ }
+ return $this->db->raiseError(null, null, null,
+ 'Could not get column count', __FUNCTION__);
+ }
+ return $cols;
+ }
+
+ // }}}
+ // {{{ 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()
+ {
+ $connection = $this->db->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+
+ if (!($this->result = @pg_get_result($connection))) {
+ return false;
+ }
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ free()
+
+ /**
+ * Free the internal resources associated with result.
+ *
+ * @return boolean true on success, false if result is invalid
+ * @access public
+ */
+ function free()
+ {
+ if (is_resource($this->result) && $this->db->connection) {
+ $free = @pg_free_result($this->result);
+ if (false === $free) {
+ return $this->db->raiseError(null, null, null,
+ 'Could not free result', __FUNCTION__);
+ }
+ }
+ $this->result = false;
+ return MDB2_OK;
+ }
+}
+
+/**
+ * MDB2 PostGreSQL buffered result driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_BufferedResult_pgsql extends MDB2_Result_pgsql
+{
+ // {{{ seek()
+
+ /**
+ * Seek to a specific row in a result set
+ *
+ * @param int $rownum number of the row where the data can be found
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function seek($rownum = 0)
+ {
+ if ($this->rownum != ($rownum - 1) && !@pg_result_seek($this->result, $rownum)) {
+ if (false === $this->result) {
+ return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+ 'resultset has already been freed', __FUNCTION__);
+ }
+ if (null === $this->result) {
+ return MDB2_OK;
+ }
+ return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
+ 'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
+ }
+ $this->rownum = $rownum - 1;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ valid()
+
+ /**
+ * Check if the end of the result set has been reached
+ *
+ * @return mixed true or false on sucess, a MDB2 error on failure
+ * @access public
+ */
+ function valid()
+ {
+ $numrows = $this->numRows();
+ if (PEAR::isError($numrows)) {
+ return $numrows;
+ }
+ return $this->rownum < ($numrows - 1);
+ }
+
+ // }}}
+ // {{{ numRows()
+
+ /**
+ * Returns the number of rows in a result object
+ *
+ * @return mixed MDB2 Error Object or the number of rows
+ * @access public
+ */
+ function numRows()
+ {
+ $rows = @pg_num_rows($this->result);
+ if (null === $rows) {
+ if (false === $this->result) {
+ return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+ 'resultset has already been freed', __FUNCTION__);
+ }
+ if (null === $this->result) {
+ return 0;
+ }
+ return $this->db->raiseError(null, null, null,
+ 'Could not get row count', __FUNCTION__);
+ }
+ return $rows;
+ }
+}
+
+/**
+ * MDB2 PostGreSQL statement driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Statement_pgsql extends MDB2_Statement_Common
+{
+ // {{{ _execute()
+
+ /**
+ * Execute a prepared query statement helper method.
+ *
+ * @param mixed $result_class string which specifies which result class to use
+ * @param mixed $result_wrap_class string which specifies which class to wrap results in
+ *
+ * @return mixed MDB2_Result or integer (affected rows) on success,
+ * a MDB2 error on failure
+ * @access private
+ */
+ function &_execute($result_class = true, $result_wrap_class = false)
+ {
+ if (null === $this->statement) {
+ $result =& parent::_execute($result_class, $result_wrap_class);
+ return $result;
+ }
+ $this->db->last_query = $this->query;
+ $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values));
+ if ($this->db->getOption('disable_query')) {
+ $result = $this->is_manip ? 0 : null;
+ return $result;
+ }
+
+ $connection = $this->db->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+
+ $query = false;
+ $parameters = array();
+ // todo: disabled until pg_execute() bytea issues are cleared up
+ if (true || !function_exists('pg_execute')) {
+ $query = 'EXECUTE '.$this->statement;
+ }
+ if (!empty($this->positions)) {
+ foreach ($this->positions as $parameter) {
+ if (!array_key_exists($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];
+ $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
+ if (is_resource($value) || $type == 'clob' || $type == 'blob' || $this->db->options['lob_allow_url_include']) {
+ if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
+ if ($match[1] == 'file://') {
+ $value = $match[2];
+ }
+ $value = @fopen($value, 'r');
+ $close = true;
+ }
+ if (is_resource($value)) {
+ $data = '';
+ while (!@feof($value)) {
+ $data.= @fread($value, $this->db->options['lob_buffer_length']);
+ }
+ if ($close) {
+ @fclose($value);
+ }
+ $value = $data;
+ }
+ }
+ $quoted = $this->db->quote($value, $type, $query);
+ if (PEAR::isError($quoted)) {
+ return $quoted;
+ }
+ $parameters[] = $quoted;
+ }
+ if ($query) {
+ $query.= ' ('.implode(', ', $parameters).')';
+ }
+ }
+
+ if (!$query) {
+ $result = @pg_execute($connection, $this->statement, $parameters);
+ if (!$result) {
+ $err =& $this->db->raiseError(null, null, null,
+ 'Unable to execute statement', __FUNCTION__);
+ return $err;
+ }
+ } else {
+ $result = $this->db->_doQuery($query, $this->is_manip, $connection);
+ if (PEAR::isError($result)) {
+ return $result;
+ }
+ }
+
+ if ($this->is_manip) {
+ $affected_rows = $this->db->_affectedRows($connection, $result);
+ return $affected_rows;
+ }
+
+ $result =& $this->db->_wrapResult($result, $this->result_types,
+ $result_class, $result_wrap_class, $this->limit, $this->offset);
+ $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result));
+ return $result;
+ }
+
+ // }}}
+ // {{{ 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 (null === $this->positions) {
+ return $this->db->raiseError(MDB2_ERROR, null, null,
+ 'Prepared statement has already been freed', __FUNCTION__);
+ }
+ $result = MDB2_OK;
+
+ if (null !== $this->statement) {
+ $connection = $this->db->getConnection();
+ if (PEAR::isError($connection)) {
+ return $connection;
+ }
+ $query = 'DEALLOCATE PREPARE '.$this->statement;
+ $result = $this->db->_doQuery($query, true, $connection);
+ }
+
+ parent::free();
+ return $result;
+ }
+}
?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 15:48:54 +0000