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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 $last_res_id = 0; |
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/** |
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* Object constructor |
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* |
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* @param string DSN for read/write operations |
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* @param string Optional DSN for read only operations |
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*/ |
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function __construct($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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|
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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, $this->sqlite_initials); |
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} |
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else |
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$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 ? $this->db_error_msg : FALSE; |
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} |
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/** |
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* Execute a SQL query |
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* |
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* @param string SQL query to execute |
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* @param mixed Values to be inserted in query |
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* @return number Query handle identifier |
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* @access public |
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*/ |
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function query() |
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{ |
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$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 = $this->db_handle->query($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); |
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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', '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 Sequence name for increment |
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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($sequence = '') |
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{ |
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if (!$this->db_handle || $this->db_mode=='r') |
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return FALSE; |
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return $this->db_handle->lastInsertID($sequence); |
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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)) |
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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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* 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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{ |
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return $this->quote_identifier($str); |
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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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* @access public |
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*/ |
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function quote_identifier($str) |
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{ |
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if (!$this->db_handle) |
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$this->db_connect('r'); |
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return $this->db_handle->quoteIdentifier($str); |
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} |
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/** |
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* Escapes a string |
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* |
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* @param string The string to be escaped |
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* @return string The escaped string |
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* @access public |
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* @since 0.1.1 |
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*/ |
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function escapeSimple($str) |
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{ |
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if (!$this->db_handle) |
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$this->db_connect('r'); |
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return $this->db_handle->escape($str); |
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} |
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/** |
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* Return SQL function for current time and date |
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* |
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* @return string SQL function to use in query |
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* @access public |
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*/ |
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function now() |
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{ |
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switch($this->db_provider) |
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{ |
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case 'mssql': |
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return "getdate()"; |
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default: |
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return "now()"; |
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} |
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} |
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/** |
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* Return SQL statement to convert a field value into a unix timestamp |
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* |
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* @param string Field name |
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* @return string SQL statement to use in query |
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* @access public |
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*/ |
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function unixtimestamp($field) |
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{ |
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switch($this->db_provider) |
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{ |
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case 'pgsql': |
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return "EXTRACT (EPOCH FROM $field)"; |
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break; |
|
472 |
|
7139e3
|
473 |
case 'mssql': |
T |
474 |
return "datediff(s, '1970-01-01 00:00:00', $field)"; |
|
475 |
|
d2a9db
|
476 |
default: |
T |
477 |
return "UNIX_TIMESTAMP($field)"; |
|
478 |
} |
f45ec7
|
479 |
} |
S |
480 |
|
|
481 |
|
d2a9db
|
482 |
/** |
T |
483 |
* Return SQL statement to convert from a unix timestamp |
|
484 |
* |
|
485 |
* @param string Field name |
|
486 |
* @return string SQL statement to use in query |
|
487 |
* @access public |
|
488 |
*/ |
|
489 |
function fromunixtime($timestamp) |
f45ec7
|
490 |
{ |
d2a9db
|
491 |
switch($this->db_provider) |
T |
492 |
{ |
|
493 |
case 'mysqli': |
|
494 |
case 'mysql': |
|
495 |
case 'sqlite': |
3978ab
|
496 |
return sprintf("FROM_UNIXTIME(%d)", $timestamp); |
f45ec7
|
497 |
|
d2a9db
|
498 |
default: |
T |
499 |
return date("'Y-m-d H:i:s'", $timestamp); |
|
500 |
} |
f45ec7
|
501 |
} |
S |
502 |
|
d2a9db
|
503 |
|
T |
504 |
/** |
d8d416
|
505 |
* Return SQL statement for case insensitive LIKE |
A |
506 |
* |
|
507 |
* @param string Field name |
|
508 |
* @param string Search value |
|
509 |
* @return string SQL statement to use in query |
|
510 |
* @access public |
|
511 |
*/ |
|
512 |
function ilike($column, $value) |
|
513 |
{ |
|
514 |
// TODO: use MDB2's matchPattern() function |
|
515 |
switch($this->db_provider) |
|
516 |
{ |
|
517 |
case 'pgsql': |
|
518 |
return $this->quote_identifier($column).' ILIKE '.$this->quote($value); |
|
519 |
default: |
|
520 |
return $this->quote_identifier($column).' LIKE '.$this->quote($value); |
|
521 |
} |
|
522 |
} |
|
523 |
|
|
524 |
|
|
525 |
/** |
d2a9db
|
526 |
* Adds a query result and returns a handle ID |
T |
527 |
* |
|
528 |
* @param object Query handle |
9c5bee
|
529 |
* @return mixed Handle ID |
d2a9db
|
530 |
* @access private |
T |
531 |
*/ |
|
532 |
function _add_result($res) |
f45ec7
|
533 |
{ |
d2a9db
|
534 |
// sql error occured |
T |
535 |
if (PEAR::isError($res)) |
|
536 |
{ |
9c5bee
|
537 |
$this->db_error = TRUE; |
A |
538 |
$this->db_error_msg = $res->getMessage(); |
d2a9db
|
539 |
raise_error(array('code' => 500, 'type' => 'db', 'line' => __LINE__, 'file' => __FILE__, |
9c5bee
|
540 |
'message' => $res->getMessage() . " Query: " |
A |
541 |
. substr(preg_replace('/[\r\n]+\s*/', ' ', $res->userinfo), 0, 512)), |
|
542 |
TRUE, FALSE); |
d2a9db
|
543 |
} |
9c5bee
|
544 |
|
A |
545 |
$res_id = sizeof($this->a_query_results); |
|
546 |
$this->last_res_id = $res_id; |
|
547 |
$this->a_query_results[$res_id] = $res; |
|
548 |
return $res_id; |
f45ec7
|
549 |
} |
d2a9db
|
550 |
|
T |
551 |
|
|
552 |
/** |
|
553 |
* Resolves a given handle ID and returns the according query handle |
9c5bee
|
554 |
* If no ID is specified, the last resource handle will be returned |
d2a9db
|
555 |
* |
T |
556 |
* @param number Handle ID |
9c5bee
|
557 |
* @return mixed Resource handle or FALSE on failure |
d2a9db
|
558 |
* @access private |
T |
559 |
*/ |
|
560 |
function _get_result($res_id=NULL) |
|
561 |
{ |
|
562 |
if ($res_id==NULL) |
|
563 |
$res_id = $this->last_res_id; |
|
564 |
|
9c5bee
|
565 |
if (isset($this->a_query_results[$res_id])) |
A |
566 |
if (!PEAR::isError($this->a_query_results[$res_id])) |
|
567 |
return $this->a_query_results[$res_id]; |
|
568 |
|
|
569 |
return FALSE; |
d2a9db
|
570 |
} |
T |
571 |
|
|
572 |
|
|
573 |
/** |
|
574 |
* Create a sqlite database from a file |
|
575 |
* |
|
576 |
* @param object SQLite database handle |
|
577 |
* @param string File path to use for DB creation |
|
578 |
* @access private |
|
579 |
*/ |
|
580 |
function _sqlite_create_database($dbh, $file_name) |
|
581 |
{ |
|
582 |
if (empty($file_name) || !is_string($file_name)) |
|
583 |
return; |
|
584 |
|
ff73e0
|
585 |
$data = file_get_contents($file_name); |
d2a9db
|
586 |
|
T |
587 |
if (strlen($data)) |
50d515
|
588 |
if (!sqlite_exec($dbh->connection, $data, $error) || MDB2::isError($dbh)) |
A |
589 |
raise_error(array('code' => 500, 'type' => 'db', |
|
590 |
'line' => __LINE__, 'file' => __FILE__, 'message' => $error), TRUE, FALSE); |
d2a9db
|
591 |
} |
T |
592 |
|
|
593 |
|
|
594 |
/** |
|
595 |
* Add some proprietary database functions to the current SQLite handle |
|
596 |
* in order to make it MySQL compatible |
|
597 |
* |
|
598 |
* @access private |
|
599 |
*/ |
|
600 |
function _sqlite_prepare() |
|
601 |
{ |
|
602 |
include_once('include/rcube_sqlite.inc'); |
|
603 |
|
|
604 |
// we emulate via callback some missing MySQL function |
|
605 |
sqlite_create_function($this->db_handle->connection, "from_unixtime", "rcube_sqlite_from_unixtime"); |
|
606 |
sqlite_create_function($this->db_handle->connection, "unix_timestamp", "rcube_sqlite_unix_timestamp"); |
|
607 |
sqlite_create_function($this->db_handle->connection, "now", "rcube_sqlite_now"); |
|
608 |
sqlite_create_function($this->db_handle->connection, "md5", "rcube_sqlite_md5"); |
|
609 |
} |
|
610 |
|
|
611 |
|
|
612 |
} // end class rcube_db |
f45ec7
|
613 |
|
981472
|
614 |
|
T |
615 |
/* this is our own debug handler for the MDB2 connection */ |
|
616 |
function mdb2_debug_handler(&$db, $scope, $message, $context = array()) |
|
617 |
{ |
|
618 |
if ($scope != 'prepare') |
|
619 |
{ |
|
620 |
$debug_output = $scope . '('.$db->db_index.'): '; |
|
621 |
$debug_output .= $message . $db->getOption('log_line_break'); |
|
622 |
write_log('sqllog', $debug_output); |
|
623 |
} |
|
624 |
} |
|
625 |
|
|
626 |
|