/**
* DBオブジェクトを返す
*
* @access public
* @param string $db_key DBキー
* @return mixed Ethna_DB:DBオブジェクト null:DSN設定なし Ethna_Error:エラー
* @todo この中でnewしないでclass factoryを利用する
*/
public function getDB($db_key = "")
{
$null = null;
$db_varname = $this->_getDBVarname($db_key);
if (Ethna::isError($db_varname)) {
return $db_varname;
}
if (isset($this->db_list[$db_varname]) && $this->db_list[$db_varname] != null) {
return $this->db_list[$db_varname];
}
$dsn = $this->controller->getDSN($db_key);
if ($dsn == "") {
// DB接続不要
return $null;
}
$dsn_persistent = $this->controller->getDSN_persistent($db_key);
$class_factory = $this->controller->getClassFactory();
$db_class_name = $class_factory->getObjectName('db');
// BC: Ethna_DB -> Ethna_DB_PEAR
if ($db_class_name == 'Ethna_DB') {
$db_class_name = 'Ethna_DB_PEAR';
}
if (class_exists($db_class_name) === false) {
$class_factory->_include($db_class_name);
}
$this->db_list[$db_varname] = new $db_class_name($this->controller, $dsn, $dsn_persistent);
$r = $this->db_list[$db_varname]->connect();
if (Ethna::isError($r)) {
$this->db_list[$db_varname] = null;
return $r;
}
register_shutdown_function(array($this, 'shutdownDB'));
return $this->db_list[$db_varname];
}
