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<?php |
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/* |
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+-----------------------------------------------------------------------+ |
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| program/include/rcube_mdb2.php | |
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| | |
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| This file is part of the RoundCube Webmail client | |
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| Copyright (C) 2005-2009, RoundCube Dev. - Switzerland | |
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| Licensed under the GNU GPL | |
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| | |
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| PURPOSE: | |
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| PEAR:DB wrapper class that implements PEAR MDB2 functions | |
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| See http://pear.php.net/package/MDB2 | |
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+-----------------------------------------------------------------------+ |
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| Author: Lukas Kahwe Smith <smith@pooteeweet.org> | |
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+-----------------------------------------------------------------------+ |
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$Id$ |
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*/ |
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/** |
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* Database independent query interface |
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* |
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* This is a wrapper for the PEAR::MDB2 class |
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* |
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* @package Database |
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* @author David Saez Padros <david@ols.es> |
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* @author Thomas Bruederli <roundcube@gmail.com> |
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* @author Lukas Kahwe Smith <smith@pooteeweet.org> |
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* @version 1.16 |
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* @link http://pear.php.net/package/MDB2 |
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*/ |
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class rcube_mdb2 |
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{ |
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var $db_dsnw; // DSN for write operations |
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var $db_dsnr; // DSN for read operations |
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var $db_connected = false; // Already connected ? |
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var $db_mode = ''; // Connection mode |
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var $db_handle = 0; // Connection handle |
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var $db_error = false; |
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var $db_error_msg = ''; |
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var $debug_mode = false; |
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|
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var $a_query_results = array('dummy'); |
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var $last_res_id = 0; |
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private $tables; |
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/** |
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* Object constructor |
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* |
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* @param string DSN for read/write operations |
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* @param string Optional DSN for read only operations |
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*/ |
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function __construct($db_dsnw, $db_dsnr='', $pconn=false) |
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{ |
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if ($db_dsnr=='') |
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$db_dsnr=$db_dsnw; |
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$this->db_dsnw = $db_dsnw; |
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$this->db_dsnr = $db_dsnr; |
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$this->db_pconn = $pconn; |
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|
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$dsn_array = MDB2::parseDSN($db_dsnw); |
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$this->db_provider = $dsn_array['phptype']; |
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} |
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/** |
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* Connect to specific database |
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* |
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* @param string DSN for DB connections |
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* @return object PEAR database handle |
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* @access private |
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*/ |
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function dsn_connect($dsn) |
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{ |
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// Use persistent connections if available |
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$db_options = array( |
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'persistent' => $this->db_pconn, |
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'emulate_prepared' => $this->debug_mode, |
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'debug' => $this->debug_mode, |
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'debug_handler' => 'mdb2_debug_handler', |
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'portability' => MDB2_PORTABILITY_ALL ^ MDB2_PORTABILITY_EMPTY_TO_NULL); |
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if ($this->db_provider == 'pgsql') { |
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$db_options['disable_smart_seqname'] = true; |
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$db_options['seqname_format'] = '%s'; |
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} |
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$dbh = MDB2::connect($dsn, $db_options); |
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if (MDB2::isError($dbh)) |
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{ |
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$this->db_error = TRUE; |
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$this->db_error_msg = $dbh->getMessage(); |
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raise_error(array('code' => 500, 'type' => 'db', 'line' => __LINE__, |
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'file' => __FILE__, 'message' => $dbh->getUserInfo()), TRUE, FALSE); |
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} |
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else if ($this->db_provider=='sqlite') |
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{ |
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$dsn_array = MDB2::parseDSN($dsn); |
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if (!filesize($dsn_array['database']) && !empty($this->sqlite_initials)) |
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$this->_sqlite_create_database($dbh, $this->sqlite_initials); |
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} |
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else if ($this->db_provider!='mssql' && $this->db_provider!='sqlsrv') |
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$dbh->setCharset('utf8'); |
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return $dbh; |
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} |
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/** |
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* Connect to appropiate databse |
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* depending on the operation |
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* |
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* @param string Connection mode (r|w) |
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* @access public |
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*/ |
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function db_connect($mode) |
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{ |
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$this->db_mode = $mode; |
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// Already connected |
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if ($this->db_connected) |
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{ |
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// no replication, current connection is ok |
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if ($this->db_dsnw==$this->db_dsnr) |
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return; |
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// connected to master, current connection is ok |
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if ($this->db_mode=='w') |
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return; |
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// Same mode, current connection is ok |
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if ($this->db_mode==$mode) |
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return; |
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} |
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if ($mode=='r') |
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$dsn = $this->db_dsnr; |
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else |
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$dsn = $this->db_dsnw; |
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$this->db_handle = $this->dsn_connect($dsn); |
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$this->db_connected = true; |
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} |
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/** |
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* Activate/deactivate debug mode |
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* |
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* @param boolean True if SQL queries should be logged |
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*/ |
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function set_debug($dbg = true) |
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{ |
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$this->debug_mode = $dbg; |
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if ($this->db_connected) |
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{ |
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$this->db_handle->setOption('debug', $dbg); |
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$this->db_handle->setOption('emulate_prepared', $dbg); |
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} |
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} |
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/** |
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* Getter for error state |
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* |
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* @param boolean True on error |
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*/ |
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function is_error() |
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{ |
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return $this->db_error ? $this->db_error_msg : FALSE; |
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} |
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/** |
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* Connection state checker |
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* |
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* @param boolean True if in connected state |
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*/ |
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function is_connected() |
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{ |
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return PEAR::isError($this->db_handle) ? false : true; |
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} |
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/** |
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* Execute a SQL query |
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* |
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* @param string SQL query to execute |
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* @param mixed Values to be inserted in query |
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* @return number Query handle identifier |
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* @access public |
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*/ |
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function query() |
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{ |
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if (!$this->is_connected()) |
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return NULL; |
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$params = func_get_args(); |
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$query = array_shift($params); |
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return $this->_query($query, 0, 0, $params); |
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} |
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/** |
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* Execute a SQL query with limits |
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* |
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* @param string SQL query to execute |
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* @param number Offset for LIMIT statement |
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* @param number Number of rows for LIMIT statement |
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* @param mixed Values to be inserted in query |
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* @return number Query handle identifier |
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* @access public |
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*/ |
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function limitquery() |
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{ |
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$params = func_get_args(); |
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$query = array_shift($params); |
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$offset = array_shift($params); |
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$numrows = array_shift($params); |
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return $this->_query($query, $offset, $numrows, $params); |
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} |
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/** |
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* Execute a SQL query with limits |
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* |
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* @param string SQL query to execute |
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* @param number Offset for LIMIT statement |
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* @param number Number of rows for LIMIT statement |
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* @param array Values to be inserted in query |
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* @return number Query handle identifier |
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* @access private |
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*/ |
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function _query($query, $offset, $numrows, $params) |
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{ |
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// Read or write ? |
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if (strtolower(substr(trim($query),0,6))=='select') |
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$mode='r'; |
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else |
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$mode='w'; |
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$this->db_connect($mode); |
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if ($this->db_provider == 'sqlite') |
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$this->_sqlite_prepare(); |
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if ($numrows || $offset) |
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$result = $this->db_handle->setLimit($numrows,$offset); |
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if (empty($params)) |
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$result = $mode=='r' ? $this->db_handle->query($query) : $this->db_handle->exec($query); |
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else |
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{ |
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$params = (array)$params; |
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$q = $this->db_handle->prepare($query, null, $mode=='w' ? MDB2_PREPARE_MANIP : null); |
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if ($this->db_handle->isError($q)) |
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{ |
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$this->db_error = TRUE; |
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$this->db_error_msg = $q->userinfo; |
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raise_error(array('code' => 500, 'type' => 'db', |
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'line' => __LINE__, 'file' => __FILE__, |
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'message' => $this->db_error_msg), TRUE, TRUE); |
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} |
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else |
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{ |
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$result = $q->execute($params); |
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$q->free(); |
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} |
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} |
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// add result, even if it's an error |
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return $this->_add_result($result); |
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} |
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/** |
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* Get number of rows for a SQL query |
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* If no query handle is specified, the last query will be taken as reference |
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* |
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* @param number Optional query handle identifier |
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* @return mixed Number of rows or FALSE on failure |
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* @access public |
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*/ |
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function num_rows($res_id=NULL) |
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{ |
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if (!$this->db_handle) |
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return FALSE; |
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if ($result = $this->_get_result($res_id)) |
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return $result->numRows(); |
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else |
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return FALSE; |
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} |
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/** |
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* Get number of affected rows for the last query |
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* |
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* @param number Optional query handle identifier |
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* @return mixed Number of rows or FALSE on failure |
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* @access public |
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*/ |
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function affected_rows($res_id = null) |
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{ |
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if (!$this->db_handle) |
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return FALSE; |
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return (int) $this->_get_result($res_id); |
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} |
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/** |
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* Get last inserted record ID |
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* For Postgres databases, a sequence name is required |
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* |
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* @param string Table name (to find the incremented sequence) |
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* @return mixed ID or FALSE on failure |
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* @access public |
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*/ |
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function insert_id($table = '') |
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{ |
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if (!$this->db_handle || $this->db_mode=='r') |
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return FALSE; |
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if ($table) { |
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if ($this->db_provider == 'pgsql') |
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// find sequence name |
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$table = get_sequence_name($table); |
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else |
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// resolve table name |
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$table = get_table_name($table); |
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} |
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$id = $this->db_handle->lastInsertID($table); |
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return $this->db_handle->isError($id) ? null : $id; |
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} |
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/** |
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* Get an associative array for one row |
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* If no query handle is specified, the last query will be taken as reference |
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* |
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* @param number Optional query handle identifier |
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* @return mixed Array with col values or FALSE on failure |
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* @access public |
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*/ |
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function fetch_assoc($res_id=NULL) |
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{ |
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$result = $this->_get_result($res_id); |
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return $this->_fetch_row($result, MDB2_FETCHMODE_ASSOC); |
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} |
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/** |
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* Get an index array for one row |
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* If no query handle is specified, the last query will be taken as reference |
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* |
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* @param number Optional query handle identifier |
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* @return mixed Array with col values or FALSE on failure |
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* @access public |
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*/ |
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function fetch_array($res_id=NULL) |
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{ |
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$result = $this->_get_result($res_id); |
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return $this->_fetch_row($result, MDB2_FETCHMODE_ORDERED); |
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} |
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/** |
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* Get col values for a result row |
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* |
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* @param object Query result handle |
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* @param number Fetch mode identifier |
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* @return mixed Array with col values or FALSE on failure |
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* @access private |
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*/ |
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function _fetch_row($result, $mode) |
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{ |
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if ($result === FALSE || PEAR::isError($result) || !$this->is_connected()) |
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return FALSE; |
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return $result->fetchRow($mode); |
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} |
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/** |
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* Wrapper for the SHOW TABLES command |
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* |
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* @return array List of all tables of the current database |
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*/ |
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function list_tables() |
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{ |
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// get tables if not cached |
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if (!$this->tables) { |
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$this->db_handle->loadModule('Manager'); |
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if (!PEAR::isError($result = $this->db_handle->listTables())) |
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$this->tables = $result; |
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else |
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$this->tables = array(); |
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} |
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return $this->tables; |
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} |
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/** |
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* Formats input so it can be safely used in a query |
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* |
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* @param mixed Value to quote |
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* @return string Quoted/converted string for use in query |
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* @access public |
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*/ |
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function quote($input, $type = null) |
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{ |
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// create DB handle if not available |
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if (!$this->db_handle) |
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$this->db_connect('r'); |
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// escape pear identifier chars |
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$rep_chars = array('?' => '\?', |
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'!' => '\!', |
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'&' => '\&'); |
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return $this->db_handle->quote($input, $type); |
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} |
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/** |
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* Quotes a string so it can be safely used as a table or column name |
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* |
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* @param string Value to quote |
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* @return string Quoted string for use in query |
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* @deprecated Replaced by rcube_MDB2::quote_identifier |
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* @see rcube_mdb2::quote_identifier |
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* @access public |
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*/ |
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function quoteIdentifier($str) |
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{ |
d2a9db
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return $this->quote_identifier($str); |
9c5bee
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} |
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|
d2a9db
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/** |
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* Quotes a string so it can be safely used as a table or column name |
|
457 |
* |
|
458 |
* @param string Value to quote |
|
459 |
* @return string Quoted string for use in query |
|
460 |
* @access public |
|
461 |
*/ |
|
462 |
function quote_identifier($str) |
f45ec7
|
463 |
{ |
d2a9db
|
464 |
if (!$this->db_handle) |
T |
465 |
$this->db_connect('r'); |
|
466 |
|
|
467 |
return $this->db_handle->quoteIdentifier($str); |
f45ec7
|
468 |
} |
S |
469 |
|
8f4dcb
|
470 |
/** |
T |
471 |
* Escapes a string |
|
472 |
* |
|
473 |
* @param string The string to be escaped |
|
474 |
* @return string The escaped string |
|
475 |
* @access public |
|
476 |
* @since 0.1.1 |
|
477 |
*/ |
|
478 |
function escapeSimple($str) |
|
479 |
{ |
|
480 |
if (!$this->db_handle) |
|
481 |
$this->db_connect('r'); |
|
482 |
|
|
483 |
return $this->db_handle->escape($str); |
|
484 |
} |
|
485 |
|
f45ec7
|
486 |
|
d2a9db
|
487 |
/** |
7139e3
|
488 |
* Return SQL function for current time and date |
T |
489 |
* |
|
490 |
* @return string SQL function to use in query |
|
491 |
* @access public |
|
492 |
*/ |
|
493 |
function now() |
|
494 |
{ |
|
495 |
switch($this->db_provider) |
|
496 |
{ |
|
497 |
case 'mssql': |
2273d4
|
498 |
case 'sqlsrv': |
7139e3
|
499 |
return "getdate()"; |
T |
500 |
|
|
501 |
default: |
|
502 |
return "now()"; |
|
503 |
} |
|
504 |
} |
|
505 |
|
|
506 |
|
|
507 |
/** |
ad84f9
|
508 |
* Return list of elements for use with SQL's IN clause |
A |
509 |
* |
|
510 |
* @param string Input array |
|
511 |
* @return string Elements list string |
|
512 |
* @access public |
|
513 |
*/ |
|
514 |
function array2list($arr, $type=null) |
|
515 |
{ |
|
516 |
if (!is_array($arr)) |
|
517 |
return $this->quote($arr, $type); |
|
518 |
|
|
519 |
$res = array(); |
|
520 |
foreach ($arr as $item) |
|
521 |
$res[] = $this->quote($item, $type); |
|
522 |
|
|
523 |
return implode(',', $res); |
|
524 |
} |
|
525 |
|
|
526 |
|
|
527 |
/** |
d2a9db
|
528 |
* Return SQL statement to convert a field value into a unix timestamp |
T |
529 |
* |
|
530 |
* @param string Field name |
|
531 |
* @return string SQL statement to use in query |
|
532 |
* @access public |
|
533 |
*/ |
|
534 |
function unixtimestamp($field) |
f45ec7
|
535 |
{ |
d2a9db
|
536 |
switch($this->db_provider) |
T |
537 |
{ |
|
538 |
case 'pgsql': |
|
539 |
return "EXTRACT (EPOCH FROM $field)"; |
|
540 |
break; |
|
541 |
|
7139e3
|
542 |
case 'mssql': |
2273d4
|
543 |
case 'sqlsrv': |
446533
|
544 |
return "DATEDIFF(second, '19700101', $field) + DATEDIFF(second, GETDATE(), GETUTCDATE())"; |
7139e3
|
545 |
|
d2a9db
|
546 |
default: |
T |
547 |
return "UNIX_TIMESTAMP($field)"; |
|
548 |
} |
f45ec7
|
549 |
} |
S |
550 |
|
|
551 |
|
d2a9db
|
552 |
/** |
T |
553 |
* Return SQL statement to convert from a unix timestamp |
|
554 |
* |
|
555 |
* @param string Field name |
|
556 |
* @return string SQL statement to use in query |
|
557 |
* @access public |
|
558 |
*/ |
|
559 |
function fromunixtime($timestamp) |
f45ec7
|
560 |
{ |
d2a9db
|
561 |
switch($this->db_provider) |
T |
562 |
{ |
|
563 |
case 'mysqli': |
|
564 |
case 'mysql': |
|
565 |
case 'sqlite': |
3978ab
|
566 |
return sprintf("FROM_UNIXTIME(%d)", $timestamp); |
f45ec7
|
567 |
|
d2a9db
|
568 |
default: |
T |
569 |
return date("'Y-m-d H:i:s'", $timestamp); |
|
570 |
} |
f45ec7
|
571 |
} |
S |
572 |
|
d2a9db
|
573 |
|
T |
574 |
/** |
d8d416
|
575 |
* Return SQL statement for case insensitive LIKE |
A |
576 |
* |
|
577 |
* @param string Field name |
|
578 |
* @param string Search value |
|
579 |
* @return string SQL statement to use in query |
|
580 |
* @access public |
|
581 |
*/ |
|
582 |
function ilike($column, $value) |
|
583 |
{ |
|
584 |
// TODO: use MDB2's matchPattern() function |
|
585 |
switch($this->db_provider) |
|
586 |
{ |
|
587 |
case 'pgsql': |
|
588 |
return $this->quote_identifier($column).' ILIKE '.$this->quote($value); |
|
589 |
default: |
|
590 |
return $this->quote_identifier($column).' LIKE '.$this->quote($value); |
|
591 |
} |
|
592 |
} |
|
593 |
|
|
594 |
|
|
595 |
/** |
ac6229
|
596 |
* Encodes non-UTF-8 characters in string/array/object (recursive) |
A |
597 |
* |
|
598 |
* @param mixed Data to fix |
|
599 |
* @return mixed Properly UTF-8 encoded data |
|
600 |
* @access public |
|
601 |
*/ |
|
602 |
function encode($input) |
|
603 |
{ |
|
604 |
if (is_object($input)) { |
|
605 |
foreach (get_object_vars($input) as $idx => $value) |
|
606 |
$input->$idx = $this->encode($value); |
|
607 |
return $input; |
|
608 |
} |
|
609 |
else if (is_array($input)) { |
|
610 |
foreach ($input as $idx => $value) |
|
611 |
$input[$idx] = $this->encode($value); |
|
612 |
return $input; |
|
613 |
} |
|
614 |
|
|
615 |
return utf8_encode($input); |
|
616 |
} |
|
617 |
|
|
618 |
|
|
619 |
/** |
|
620 |
* Decodes encoded UTF-8 string/object/array (recursive) |
|
621 |
* |
|
622 |
* @param mixed Input data |
|
623 |
* @return mixed Decoded data |
|
624 |
* @access public |
|
625 |
*/ |
|
626 |
function decode($input) |
|
627 |
{ |
|
628 |
if (is_object($input)) { |
|
629 |
foreach (get_object_vars($input) as $idx => $value) |
|
630 |
$input->$idx = $this->decode($value); |
|
631 |
return $input; |
|
632 |
} |
|
633 |
else if (is_array($input)) { |
|
634 |
foreach ($input as $idx => $value) |
|
635 |
$input[$idx] = $this->decode($value); |
|
636 |
return $input; |
|
637 |
} |
|
638 |
|
|
639 |
return utf8_decode($input); |
|
640 |
} |
|
641 |
|
|
642 |
|
|
643 |
/** |
d2a9db
|
644 |
* Adds a query result and returns a handle ID |
T |
645 |
* |
|
646 |
* @param object Query handle |
9c5bee
|
647 |
* @return mixed Handle ID |
d2a9db
|
648 |
* @access private |
T |
649 |
*/ |
|
650 |
function _add_result($res) |
f45ec7
|
651 |
{ |
d2a9db
|
652 |
// sql error occured |
T |
653 |
if (PEAR::isError($res)) |
|
654 |
{ |
9c5bee
|
655 |
$this->db_error = TRUE; |
A |
656 |
$this->db_error_msg = $res->getMessage(); |
10eedb
|
657 |
raise_error(array('code' => 500, 'type' => 'db', |
A |
658 |
'line' => __LINE__, 'file' => __FILE__, |
9c5bee
|
659 |
'message' => $res->getMessage() . " Query: " |
A |
660 |
. substr(preg_replace('/[\r\n]+\s*/', ' ', $res->userinfo), 0, 512)), |
|
661 |
TRUE, FALSE); |
d2a9db
|
662 |
} |
9c5bee
|
663 |
|
A |
664 |
$res_id = sizeof($this->a_query_results); |
|
665 |
$this->last_res_id = $res_id; |
|
666 |
$this->a_query_results[$res_id] = $res; |
|
667 |
return $res_id; |
f45ec7
|
668 |
} |
d2a9db
|
669 |
|
T |
670 |
|
|
671 |
/** |
|
672 |
* Resolves a given handle ID and returns the according query handle |
9c5bee
|
673 |
* If no ID is specified, the last resource handle will be returned |
d2a9db
|
674 |
* |
T |
675 |
* @param number Handle ID |
9c5bee
|
676 |
* @return mixed Resource handle or FALSE on failure |
d2a9db
|
677 |
* @access private |
T |
678 |
*/ |
|
679 |
function _get_result($res_id=NULL) |
|
680 |
{ |
|
681 |
if ($res_id==NULL) |
|
682 |
$res_id = $this->last_res_id; |
|
683 |
|
9c5bee
|
684 |
if (isset($this->a_query_results[$res_id])) |
A |
685 |
if (!PEAR::isError($this->a_query_results[$res_id])) |
|
686 |
return $this->a_query_results[$res_id]; |
|
687 |
|
|
688 |
return FALSE; |
d2a9db
|
689 |
} |
T |
690 |
|
|
691 |
|
|
692 |
/** |
|
693 |
* Create a sqlite database from a file |
|
694 |
* |
|
695 |
* @param object SQLite database handle |
|
696 |
* @param string File path to use for DB creation |
|
697 |
* @access private |
|
698 |
*/ |
|
699 |
function _sqlite_create_database($dbh, $file_name) |
|
700 |
{ |
|
701 |
if (empty($file_name) || !is_string($file_name)) |
|
702 |
return; |
|
703 |
|
ff73e0
|
704 |
$data = file_get_contents($file_name); |
d2a9db
|
705 |
|
T |
706 |
if (strlen($data)) |
50d515
|
707 |
if (!sqlite_exec($dbh->connection, $data, $error) || MDB2::isError($dbh)) |
A |
708 |
raise_error(array('code' => 500, 'type' => 'db', |
|
709 |
'line' => __LINE__, 'file' => __FILE__, 'message' => $error), TRUE, FALSE); |
d2a9db
|
710 |
} |
T |
711 |
|
|
712 |
|
|
713 |
/** |
|
714 |
* Add some proprietary database functions to the current SQLite handle |
|
715 |
* in order to make it MySQL compatible |
|
716 |
* |
|
717 |
* @access private |
|
718 |
*/ |
|
719 |
function _sqlite_prepare() |
|
720 |
{ |
|
721 |
include_once('include/rcube_sqlite.inc'); |
|
722 |
|
|
723 |
// we emulate via callback some missing MySQL function |
|
724 |
sqlite_create_function($this->db_handle->connection, "from_unixtime", "rcube_sqlite_from_unixtime"); |
|
725 |
sqlite_create_function($this->db_handle->connection, "unix_timestamp", "rcube_sqlite_unix_timestamp"); |
|
726 |
sqlite_create_function($this->db_handle->connection, "now", "rcube_sqlite_now"); |
|
727 |
sqlite_create_function($this->db_handle->connection, "md5", "rcube_sqlite_md5"); |
|
728 |
} |
|
729 |
|
|
730 |
|
|
731 |
} // end class rcube_db |
f45ec7
|
732 |
|
981472
|
733 |
|
T |
734 |
/* this is our own debug handler for the MDB2 connection */ |
|
735 |
function mdb2_debug_handler(&$db, $scope, $message, $context = array()) |
|
736 |
{ |
|
737 |
if ($scope != 'prepare') |
|
738 |
{ |
|
739 |
$debug_output = $scope . '('.$db->db_index.'): '; |
|
740 |
$debug_output .= $message . $db->getOption('log_line_break'); |
d559cb
|
741 |
write_log('sql', $debug_output); |
981472
|
742 |
} |
T |
743 |
} |