majestic/model/MySQLiDriver.php

<?php
/**
 * @copyright NetMonsters <team@netmonsters.ru>
 * @link http://netmonsters.ru
 * @package Majestic
 * @subpackage db
 * @since 2010-02-17
 * @version SVN: $Id$
 * @filesource $URL$
 */

/**
 * @property MySQLi $connection
 */
class MySQLiDriver extends DbDriver
{
    
    /**
     * @param mixed $sql
     * @return DbStatement
     */
    public function prepare($sql)
    {
        return new MySQLiStatement($this, $sql);
    }

    public function getInsertId($table = null, $key = null)
    {
        return $this->connection->insert_id;
    }
    
    public function isConnected()
    {
        return ($this->connection instanceof MySQLi);
    }
    
    public function disconnect()
    {
        if ($this->isConnected()) {
            $this->connection->close();
        }
        $this->connection = null;                                       
    }
    
    protected function connect()
    {
        if ($this->connection) {
            return;
        }
        
        $port = isset($this->config['port']) ? (int) $this->config['port'] : null;
        $this->connection = mysqli_init();
        $connected = @mysqli_real_connect($this->connection, 
                                          $this->config['hostname'], 
                                          $this->config['username'], 
                                          $this->config['password'], 
                                          $this->config['database'], 
                                          $port);
        // Connection errors check
        if (mysqli_connect_error()) {
            throw new Exception(mysqli_connect_error(), mysqli_connect_errno());
        }
        
        $charset = (!empty($this->config['charset'])) ? $this->config['charset'] : 'utf8';
        $this->connection->set_charset($charset);
    }
    
    protected function driverQuote($value)
    {
        if (is_int($value) || is_float($value)) {
            return $value;
        }
        
        if (is_bool($value)) {
            var_dump($value);
            return (int) $value;
        }
        
        if ($value === null) {
            return 'NULL';
        }
        
        $this->connect();
        return '\'' . $this->connection->real_escape_string($value) . '\'';
    }
    
    protected function driverBeginTransaction()
    {
        $this->connect();
        $this->connection->autocommit(false);
    }
    
    protected function driverCommitTransaction()
    {
        $this->connection->commit();
        $this->connection->autocommit(true);
    }
    
    protected function driverRollbackTransaction()
    {
        $this->connection->rollback();
        $this->connection->autocommit(true);
    }
}