Safe multi Transaction Dframe\Database

SafeTransactionDframeDatabase.php

<?php
namespace Model;

/**
 * Class Database
 * Klasa rozbudowuje transakcje o lvl
 *
 * @package Model
 */
class Database extends \Dframe\Database\Database
{

    private $transactionCounter = 0;

    public function start()
    {

        if (!$this->transactionCounter++) {
            return $this->beginTransaction();
        }

        $this->exec('SAVEPOINT trans' . $this->transactionCounter);

        return $this->transactionCounter >= 0;

    }

    /**
     * Start PDO Commit.
     */
    public function end()
    {

        if (!--$this->transactionCounter) {
            return $this->commit();
        }

        return $this->transactionCounter >= 0;
    }

    /**
     * Start PDO Rollback.
     */
    public function back()
    {
        if (--$this->transactionCounter) {
            $this->exec('ROLLBACK TO trans' . ++$this->transactionCounter);

            return true;
        }

        // roll back the transaction if we fail
        $this->rollback();
    }
    
}