/**
* Contructor initializes the object
*
* @access public
* @param ConnectionSetting $csetting
* @param Observable $listener
* @param IDataDriver (optional) if not provided, then DataAdapter will attempt to instantiate one based on ConnectionSetting->Type
*/
function __construct($csetting, $listener = null, IDataDriver $driver = null)
{
$this->_driver = $driver;
if ($this->_driver == null) {
// the driver was not explicitly provided so we will try to create one from
// the connection setting based on the database types that we do know about
switch ($csetting->Type) {
case "mysql":
include_once "verysimple/DB/DataDriver/MySQL.php";
$this->_driver = new DataDriverMySQL();
break;
case "sqlite":
include_once "verysimple/DB/DataDriver/SQLite.php";
$this->_driver = new DataDriverSQLite();
break;
default:
include_once "verysimple/DB/DataDriver/" . $csetting->Type . ".php";
$classname = "DataDriver" . $csetting->Type;
$this->_driver = new $classname();
break;
}
}
DataAdapter::$DRIVER_INSTANCE = $this->_driver;
$this->AttachObserver($listener);
$this->_csetting =& $csetting;
$this->Observe("DataAdapter Instantiated", OBSERVE_DEBUG);
}
/**
* Load the data driver
* @throws Exception
*/
public function LoadDriver()
{
if ($this->_driver == null) {
require_once "verysimple/IO/Includer.php";
// the driver was not explicitly provided so we will try to create one from
// the connection setting based on the database types that we do know about
switch ($this->ConnectionSetting->Type) {
case "mysql":
include_once "verysimple/DB/DataDriver/MySQL.php";
$this->_driver = new DataDriverMySQL();
break;
case "mysqli":
include_once "verysimple/DB/DataDriver/MySQLi.php";
$this->_driver = new DataDriverMySQLi();
break;
case "sqlite":
include_once "verysimple/DB/DataDriver/SQLite.php";
$this->_driver = new DataDriverSQLite();
break;
default:
try {
Includer::IncludeFile("verysimple/DB/DataDriver/" . $this->ConnectionSetting->Type . ".php");
$classname = "DataDriver" . $this->ConnectionSetting->Type;
$this->_driver = new $classname();
} catch (IncludeException $ex) {
throw new Exception('Unknown DataDriver "' . $this->ConnectionSetting->Type . '" specified in connection settings');
}
break;
}
DataAdapter::$DRIVER_INSTANCE = $this->_driver;
}
}
