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

class PdoTransaction {
    
    // Singleton
    static $the_instance = null;
    static function getInstance($appl = "DEFAULT") {
        if (!isset(self::$the_instance)) {
            self::$the_instance = new PdoTransaction($appl);
        }
        else if ($appl == "DEFAULT") {
            ; // do nothing
        }
        else {
            // add app settings
            self::$the_instance->setApplication($appl);
        }
        return self::$the_instance;
    }
    
    function __construct($appl) {
        $this->setApplication($appl);
    }
    
    // instance stuff
    private $connection;
    private $application = "none";
    
    function getConnectionName() {
        return $this->connection_name;
    }
    function getApplication() {
        return $this->application;
    }
    function setApplication($appl) {
        if ($this->application != $appl) {
            // get application specific pathes
            $config = Config::getInstance();
            if ($appl == "DEFAULT") $connection_str = $config->requireConfig("PdoConnectionString");
            else $connection_str = $config->requireConfig("$appl::PdoConnectionString");
            $connection_user   = $config->getConfig("PdoConnectionUser", "");
            $connection_passwd = $config->getConfig("PdoConnectionPassword", "");

            $this->application = $appl;
            
            $this->connection = new PDO($connection_str, $connection_user, $connection_passwd);
        }
    }
    function getConnection() {
        return $this->connection;
    }
    
    function startTA(){
        $this->connection->beginTransaction();
    }
    
    function commitTA(){
        $this->connection->commit();
    }
    
    function rollbackTA(){
        $this->connection->rollBack();
    }
}

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