<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 5.2.4 or newer * * NOTICE OF LICENSE * * Licensed under the Open Software License version 3.0 * * This source file is subject to the Open Software License (OSL 3.0) that is * bundled with this package in the files license.txt / license.rst. It is * also available through the world wide web at this URL: * http://opensource.org/licenses/OSL-3.0 * If you did not receive a copy of the license and are unable to obtain it * through the world wide web, please send an email to * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0.2 * @filesource */ /** * CUBRID Database Adapter Class * * Note: _DB is an extender class that the app controller * creates dynamically based on whether the active record * class is being used or not. * * @package CodeIgniter * @subpackage Drivers * @category Database * @author Esen Sagynov * @link http://codeigniter.com/user_guide/database/ */ class CI_DB_cubrid_driver extends CI_DB { public $dbdriver = 'cubrid'; // The character used for escaping - no need in CUBRID protected $_escape_char = ''; // clause and character used for LIKE escape sequences - not used in CUBRID protected $_like_escape_str = ''; protected $_like_escape_chr = ''; /** * The syntax to count rows is slightly different across different * database engines, so this string appears in each driver and is * used for the count_all() and count_all_results() functions. */ protected $_count_string = 'SELECT COUNT(*) AS '; protected $_random_keyword = ' RAND()'; // database specific random keyword // CUBRID-specific properties public $auto_commit = TRUE; public function __construct($params) { parent::__construct($params); if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:[^:]*:[^:]*:(\?.+)?$/', $this->dsn, $matches)) { if (stripos($matches[2], 'autocommit=off') !== FALSE) { $this->auto_commit = FALSE; } } else { // If no port is defined by the user, use the default value $this->port == '' OR $this->port = 33000; } } /** * Non-persistent database connection * * @return resource */ public function db_connect() { return $this->_cubrid_connect(); } // -------------------------------------------------------------------- /** * Persistent database connection * * In CUBRID persistent DB connection is supported natively in CUBRID * engine which can be configured in the CUBRID Broker configuration * file by setting the CCI_PCONNECT parameter to ON. In that case, all * connections established between the client application and the * server will become persistent. * * @return resource */ public function db_pconnect() { return $this->_cubrid_connect(TRUE); } // -------------------------------------------------------------------- /** * CUBRID connection * * A CUBRID-specific method to create a connection to the database. * Except for determining if a persistent connection should be used, * the rest of the logic is the same for db_connect() and db_pconnect(). * * @param bool * @return resource */ protected function _cubrid_connect($persistent = FALSE) { if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:([^:]*):([^:]*):(\?.+)?$/', $this->dsn, $matches)) { $_temp = ($persistent !== TRUE) ? 'cubrid_connect_with_url' : 'cubrid_pconnect_with_url'; $conn_id = ($matches[2] === '' && $matches[3] === '' && $this->username !== '' && $this->password !== '') ? $_temp($this->dsn, $this->username, $this->password) : $_temp($this->dsn); } else { $_temp = ($persistent !== TRUE) ? 'cubrid_connect' : 'cubrid_pconnect'; $conn_id = ($this->username !== '') ? $_temp($this->hostname, $this->port, $this->database, $this->username, $this->password) : $_temp($this->hostname, $this->port, $this->database); } return $conn_id; } // -------------------------------------------------------------------- /** * Reconnect * * Keep / reestablish the db connection if no queries have been * sent for a length of time exceeding the server's idle timeout * * @return void */ public function reconnect() { if (cubrid_ping($this->conn_id) === FALSE) { $this->conn_id = FALSE; } } // -------------------------------------------------------------------- /** * Database version number * * @return string */ public function version() { return isset($this->data_cache['version']) ? $this->data_cache['version'] : $this->data_cache['version'] = cubrid_get_server_info($this->conn_id); } // -------------------------------------------------------------------- /** * Execute the query * * @param string an SQL query * @return resource */ protected function _execute($sql) { return @cubrid_query($sql, $this->conn_id); } // -------------------------------------------------------------------- /** * Begin Transaction * * @return bool */ public function trans_begin($test_mode = FALSE) { if ( ! $this->trans_enabled) { return TRUE; } // When transactions are nested we only begin/commit/rollback the outermost ones if ($this->_trans_depth > 0) { return TRUE; } // Reset the transaction failure flag. // If the $test_mode flag is set to TRUE transactions will be rolled back // even if the queries produce a successful result. $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE; if (cubrid_get_autocommit($this->conn_id)) { cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE); } return TRUE; } // -------------------------------------------------------------------- /** * Commit Transaction * * @return bool */ public function trans_commit() { if ( ! $this->trans_enabled) { return TRUE; } // When transactions are nested we only begin/commit/rollback the outermost ones if ($this->_trans_depth > 0) { return TRUE; } cubrid_commit($this->conn_id); if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id)) { cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); } return TRUE; } // -------------------------------------------------------------------- /** * Rollback Transaction * * @return bool */ public function trans_rollback() { if ( ! $this->trans_enabled) { return TRUE; } // When transactions are nested we only begin/commit/rollback the outermost ones if ($this->_trans_depth > 0) { return TRUE; } cubrid_rollback($this->conn_id); if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id)) { cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); } return TRUE; } // -------------------------------------------------------------------- /** * Escape String * * @param string * @param bool whether or not the string will be used in a LIKE condition * @return string */ public function escape_str($str, $like = FALSE) { if (is_array($str)) { foreach ($str as $key => $val) { $str[$key] = $this->escape_str($val, $like); } return $str; } if (function_exists('cubrid_real_escape_string') AND is_resource($this->conn_id)) { $str = cubrid_real_escape_string($str, $this->conn_id); } else { $str = addslashes($str); } // escape LIKE condition wildcards if ($like === TRUE) { $str = str_replace(array('%', '_'), array('\\%', '\\_'), $str); } return $str; } // -------------------------------------------------------------------- /** * Affected Rows * * @return int */ public function affected_rows() { return @cubrid_affected_rows(); } // -------------------------------------------------------------------- /** * Insert ID * * @return int */ public function insert_id() { return @cubrid_insert_id($this->conn_id); } // -------------------------------------------------------------------- /** * "Count All" query * * Generates a platform-specific query string that counts all records in * the specified table * * @param string * @return int */ public function count_all($table = '') { if ($table == '') { return 0; } $query = $this->query($this->_count_string.$this->protect_identifiers('numrows').' FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE)); if ($query->num_rows() == 0) { return 0; } $row = $query->row(); $this->_reset_select(); return (int) $row->numrows; } // -------------------------------------------------------------------- /** * List table query * * Generates a platform-specific query string so that the table names can be fetched * * @param bool * @return string */ protected function _list_tables($prefix_limit = FALSE) { $sql = "SHOW TABLES"; if ($prefix_limit !== FALSE AND $this->dbprefix != '') { $sql .= " LIKE '".$this->escape_like_str($this->dbprefix)."%'"; } return $sql; } // -------------------------------------------------------------------- /** * Show column query * * Generates a platform-specific query string so that the column names can be fetched * * @param string the table name * @return string */ protected function _list_columns($table = '') { return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE); } // -------------------------------------------------------------------- /** * Field data query * * Generates a platform-specific query so that the column data can be retrieved * * @param string the table name * @return string */ protected function _field_data($table) { return "SELECT * FROM ".$table." LIMIT 1"; } // -------------------------------------------------------------------- /** * Error * * Returns an array containing code and message of the last * database error that has occured. * * @return array */ public function error() { return array('code' => cubrid_errno($this->conn_id), 'message' => cubrid_error($this->conn_id)); } // -------------------------------------------------------------------- /** * From Tables * * This function implicitly groups FROM tables so there is no confusion * about operator precedence in harmony with SQL standards * * @param array * @return string */ protected function _from_tables($tables) { if ( ! is_array($tables)) { $tables = array($tables); } return '('.implode(', ', $tables).')'; } // -------------------------------------------------------------------- /** * Update_Batch statement * * Generates a platform-specific batch update string from the supplied data * * @param string the table name * @param array the update data * @param array the where clause * @return string */ protected function _update_batch($table, $values, $index, $where = NULL) { $ids = array(); $where = ($where != '' AND count($where) >=1) ? implode(" ", $where).' AND ' : ''; foreach ($values as $key => $val) { $ids[] = $val[$index]; foreach (array_keys($val) as $field) { if ($field != $index) { $final[$field][] = 'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field]; } } } $sql = "UPDATE ".$table." SET "; $cases = ''; foreach ($final as $k => $v) { $cases .= $k.' = CASE '."\n"; foreach ($v as $row) { $cases .= $row."\n"; } $cases .= 'ELSE '.$k.' END, '; } $sql .= substr($cases, 0, -2); $sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')'; return $sql; } // -------------------------------------------------------------------- /** * Limit string * * Generates a platform-specific LIMIT clause * * @param string the sql query string * @param int the number of rows to limit the query to * @param int the offset value * @return string */ protected function _limit($sql, $limit, $offset) { if ($offset == 0) { $offset = ''; } else { $offset .= ", "; } return $sql."LIMIT ".$offset.$limit; } // -------------------------------------------------------------------- /** * Close DB Connection * * @param resource * @return void */ protected function _close($conn_id) { @cubrid_close($conn_id); } } /* End of file cubrid_driver.php */ /* Location: ./system/database/drivers/cubrid/cubrid_driver.php */