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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); } } ?>
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