<?php
// includes
require_once 'propel/Propel.php';
require_once 'util/Config.php';

class Transaction {

	// Singleton
	static $the_instance = null;
	static function getInstance($appl = "DEFAULT") {
	    if (!isset(self::$the_instance)) {
	        self::$the_instance = new Transaction($appl);
		}
		return self::$the_instance;
	}

	function __construct($appl) {
        // get app path
	    $path = Config::getInstance()->requireConfig("app_path");
	    
		// get application specific pathes
		if ($appl == "DEFAULT")
			$propel_path = Config::getInstance()->requireConfig("PropelClassPath");
		else
			$propel_path = Config::getInstance()->requireConfig("$appl::PropelClassPath");
			
		$this->application = $appl;
		
		// init propel
		// @TODO: Ein mehrfaches Propel::init überschreibt offene TAs
		//if ($path) $conf_path = "$path/$propel_path/conf/propel-conf.php";
		//else $conf_path = "$propel_path/conf/propel-conf.php";
		Propel::init("$path/$propel_path/conf/propel-conf.php");
		
		// Add the generated 'classes' directory to the include path
		set_include_path("$path/$propel_path/classes" . PATH_SEPARATOR . get_include_path());
		
		// An explicit connection name is only necessary for appliocations
		// dealing with mutiple connections. An empty connection name
		// uses the default connection.
		$this->connection_name = Config::getInstance()->getConfig("$appl::ConnectionName");
	}
	
	// instance stuff
	private $connection_name;
	function getConnectionName() {
	    return $this->connection_name;
	}
	function getApplication() {
	    return $this->application;
	}
	function getConnection() {
	    return Propel::getConnection($this->connection_name);
	}
	
	function startTA(){
	    $this->getConnection()->beginTransaction();
	}

	function commitTA(){
	    $this->getConnection()->commit();
	}

	function rollbackTA(){
	    $this->getConnection()->rollBack();
	}
}

//Transaction::$ta_arr = array();