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<?php
/**
* Класс базы данных.
* Возвращает идентификатор соединения
*
* @copyright
* @link
* @package Majestic
* @subpackage DB
* @since
* @version SVN: $Id$
* @filesource $URL$
*/
class DBConnector
{
static private $handlers = array();
static public $queries = array();
/**
* Запрещаем new и клонирование
*/
private function __construct(){}
private function __clone(){}
/**
* Получение соединения.
* Если соединение с такими параметрами уже есть - новое не создается.
*
* @param array $db_settings - массив настроек
* @return resource - идентификатор соединения
*/
static public function getConnect($db_settings)
{
$handler_name = self::getConnectionName($db_settings);
if (isset(self::$handlers[$handler_name])) {
return self::$handlers[$handler_name];
}
if (!$handler = pg_connect("host='".$db_settings['host']."' dbname='".$db_settings['database']."' user='".$db_settings['user']."' password='".$db_settings['password']."'")) {
throw new MJException('Can\'t connect to DB '.pg_last_error(), 2);
}
return self::$handlers[$handler_name] = $handler;
}
static protected function getConnectionName($db_settings)
{
return $db_settings['host'] . '-' . $db_settings['database'];
}
/////////
static public function query($handler, $sql)
{
return pg_query($handler, $sql);
}
static public function escape($handler, $str)
{
return pg_escape_string($str);
}
static public function error($handler)
{
return pg_last_error($handler);
}
static public function free($result)
{
return pg_free_result($result);
}
static public function fetchObject($result, $class_name = false)
{
return $class_name ? pg_fetch_object($result, null, $class_name) : pg_fetch_object($result);
}
static public function numRows($result)
{
return pg_num_rows($result);
}
static public function affectedRows($handler, $result)
{
return pg_affected_rows($result);
}
static public function getId($handler)
{
return pg_last_oid($handler);
}
static public function autocommit($handler, $switch)
{
throw new MJException('Autocommit disabled for postgreSQL Connector' ,1);
}
static public function commit($handler)
{
throw new MJException('Commit disabled for postgreSQL Connector' ,1);
}
static public function rollback($handler)
{
throw new MJException('Rollback disabled for postgreSQL Connector' ,1);
}
}
?>