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authorAndrey Andreev <narf@bofh.bg>2012-10-05 21:45:41 +0200
committerAndrey Andreev <narf@bofh.bg>2012-10-05 21:45:41 +0200
commit5b5021812ea6dc859312e00b6b0f078eea54c88d (patch)
tree0a8840ee0429cc405cb597438a73d03bca970c1a /system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
parent49d08053257b55db511eaca08b8ab5d12149f3b6 (diff)
parentdbad54e09a39a77c7404dee9ca1a6b34299469d0 (diff)
Merge upstream branch
Diffstat (limited to 'system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php')
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php213
1 files changed, 213 insertions, 0 deletions
diff --git a/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
new file mode 100644
index 000000000..b6807026d
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php
@@ -0,0 +1,213 @@
+<?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 3.0.0
+ * @filesource
+ */
+
+/**
+ * PDO MySQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package CodeIgniter
+ * @subpackage Drivers
+ * @category Database
+ * @author EllisLab Dev Team
+ * @link http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_pdo_mysql_driver extends CI_DB_pdo_driver {
+
+ public $subdriver = 'mysql';
+
+ protected $_escape_char = '`';
+
+ protected $_random_keyword = ' RAND()';
+
+ /**
+ * Constructor
+ *
+ * Builds the DSN if not already set.
+ *
+ * @param array
+ * @return void
+ */
+ public function __construct($params)
+ {
+ parent::__construct($params);
+
+ if (empty($this->dsn))
+ {
+ $this->dsn = 'mysql:host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+ empty($this->port) OR $this->dsn .= ';port='.$this->port;
+ empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+ empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+ }
+ elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 6) === FALSE && is_php('5.3.6'))
+ {
+ $this->dsn .= ';charset='.$this->char_set;
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Non-persistent database connection
+ *
+ * @param bool
+ * @return object
+ */
+ public function db_connect($persistent = FALSE)
+ {
+ /* Prior to PHP 5.3.6, even if the charset was supplied in the DSN
+ * on connect - it was ignored. This is a work-around for the issue.
+ *
+ * Reference: http://www.php.net/manual/en/ref.pdo-mysql.connection.php
+ */
+ if ( ! is_php('5.3.6') && ! empty($this->char_set))
+ {
+ $this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES '.$this->char_set
+ .(empty($this->dbcollat) ? '' : ' COLLATE '.$this->dbcollat);
+ }
+
+ return parent::db_connect($persistent);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Show table query
+ *
+ * Generates a platform-specific query string so that the table names can be fetched
+ *
+ * @param bool
+ * @return string
+ */
+ protected function _list_tables($prefix_limit = FALSE)
+ {
+ $sql = 'SHOW TABLES';
+
+ if ($prefix_limit === TRUE && $this->dbprefix !== '')
+ {
+ return $sql." LIKE '".$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($table)
+ {
+ return 'SELECT * FROM '.$this->protect_identifiers($table).' LIMIT 1';
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Update_Batch statement
+ *
+ * Generates a platform-specific batch update string from the supplied data
+ *
+ * @param string the table name
+ * @param array the update data
+ * @param array the where clause
+ * @return string
+ */
+ protected function _update_batch($table, $values, $index, $where = NULL)
+ {
+ $ids = array();
+ foreach ($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];
+ }
+ }
+ }
+
+ $cases = '';
+ foreach ($final as $k => $v)
+ {
+ $cases .= $k." = CASE \n"
+ .implode("\n", $v)."\n"
+ .'ELSE '.$k.' END), ';
+ }
+
+ return 'UPDATE '.$table.' SET '.substr($cases, 0, -2)
+ .' WHERE '.(($where !== '' && count($where) > 0) ? implode(' ', $where).' AND ' : '')
+ .$index.' IN('.implode(',', $ids).')';
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Truncate statement
+ *
+ * Generates a platform-specific truncate string from the supplied data
+ *
+ * If the database does not support the truncate() command,
+ * then this method maps to 'DELETE FROM table'
+ *
+ * @param string the table name
+ * @return string
+ */
+ protected function _truncate($table)
+ {
+ return 'TRUNCATE '.$table;
+ }
+
+}
+
+/* End of file pdo_mysql_driver.php */
+/* Location: ./system/database/drivers/pdo/subdrivers/pdo_mysql_driver.php */ \ No newline at end of file