<?php
/*
* 2007-2011 PrestaShop 
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2011 PrestaShop SA
*  @version  Release: $Revision: 6626 $
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

//
// IMPORTANT : don't forget to delete the underscore _ in the file name if you want to use it !
//

class MySQL extends MySQLCore
{
	public $count = 0;
	public $queries = array();
	public $queriesTime = array();
	public $tables = array();
	public $countTypes = array('getRow' => 0, 'getValue' => 0, 'Execute' => 0, 'ExecuteS' => 0, 'delete' => 0, 'q' => 0);
	
	private function disableCache($query)
	{
		return preg_replace('/^select /', 'SELECT SQL_NO_CACHE', trim($query));
	}

	public function	getRow($query, $use_cache = 1)
	{
		$this->count++;
		$this->countTypes['getRow']++;
		$query2 = preg_replace('/[0-9]+/', '<span style="color:blue">XX</span>', $query);
		if (!isset($this->queries[$query2]))
			$this->queries[$query2] = 0;
		$this->queries[$query2]++;
		preg_match_all('/(from|join)\s+`?'.preg_replace('/[0-9]+/', 'XX', _DB_PREFIX_).'([a-z0-9_-]+)/ui', $query2, $matches);
		foreach ($matches[2] as $table)
		{
			if (!isset($this->tables[$table]))
				$this->tables[$table] = 0;
			$this->tables[$table]++;
		}
		
		$query = $this->disableCache($query);
		$t0 = microtime(true);
		
		$return = parent::getRow($query, $use_cache);

		if (!isset($this->queriesTime[$query]))
			$this->queriesTime[$query] = microtime(true)-$t0;
			
		return $return;
	}

	public function	getValue($query, $use_cache = 1)
	{
		$this->count++;
		$this->countTypes['getValue']++;
		$query2 = preg_replace('/[0-9]+/', '<span style="color:blue">XX</span>', $query);
		if (!isset($this->queries[$query2]))
			$this->queries[$query2] = 0;
		$this->queries[$query2]++;
		preg_match_all('/(from|join)\s+`?'.preg_replace('/[0-9]+/', 'XX', _DB_PREFIX_).'([a-z0-9_-]+)/ui', $query2, $matches);
		foreach ($matches[2] as $table)
		{
			if (!isset($this->tables[$table]))
				$this->tables[$table] = 0;
			$this->tables[$table]++;
		}
		
		$query = $this->disableCache($query);
		$t0 = microtime(true);
		
		$return = parent::getValue($query, $use_cache);

		if (!isset($this->queriesTime[$query]))
			$this->queriesTime[$query] = microtime(true)-$t0;
			
		return $return;
	}
	
	public function	Execute($query, $use_cache = 1)
	{
		$this->count++;
		$this->countTypes['Execute']++;
		$query2 = preg_replace('/[0-9]+/', '<span style="color:blue">XX</span>', $query);
		if (!isset($this->queries[$query2]))
			$this->queries[$query2] = 0;
		$this->queries[$query2]++;
		preg_match_all('/(from|join)\s+`?'.preg_replace('/[0-9]+/', 'XX', _DB_PREFIX_).'([a-z0-9_-]+)/ui', $query2, $matches);
		foreach ($matches[2] as $table)
		{
			if (!isset($this->tables[$table]))
				$this->tables[$table] = 0;
			$this->tables[$table]++;
		}
		
		$query = $this->disableCache($query);
		$t0 = microtime(true);
		
		$return = parent::Execute($query, $use_cache);

		if (!isset($this->queriesTime[$query]))
			$this->queriesTime[$query] = microtime(true)-$t0;
			
		return $return;
	}
	
	public function	ExecuteS($query, $array = true, $use_cache = 1)
	{
		$this->count++;
		$this->countTypes['ExecuteS']++;
		$query2 = preg_replace('/[0-9]+/', '<span style="color:blue">XX</span>', $query);
		if (!isset($this->queries[$query2]))
			$this->queries[$query2] = 0;
		$this->queries[$query2]++;
		preg_match_all('/(from|join)\s+`?'.preg_replace('/[0-9]+/', 'XX', _DB_PREFIX_).'([a-z0-9_-]+)/ui', $query2, $matches);
		foreach ($matches[2] as $table)
		{
			if (!isset($this->tables[$table]))
				$this->tables[$table] = 0;
			$this->tables[$table]++;
		}
		
		$query = $this->disableCache($query);
		$t0 = microtime(true);
		
		$return = parent::ExecuteS($query, $array, $use_cache);

		if (!isset($this->queriesTime[$query]))
			$this->queriesTime[$query] = microtime(true)-$t0;
			
		return $return;
	}
	
	public function	delete($table, $where = false, $limit = false, $use_cache = 1)
	{
		$this->_result = false;
		if ($this->_link)
		{
			$query  = 'DELETE FROM `'.pSQL($table).'`'.($where ? ' WHERE '.$where : '').($limit ? ' LIMIT '.(int)($limit) : '');

			$this->count++;
			$this->countTypes['delete']++;
			$query2 = preg_replace('/[0-9]+/', '<span style="color:blue">XX</span>', $query);
			if (!isset($this->queries[$query2]))
				$this->queries[$query2] = 0;
			$this->queries[$query2]++;
			preg_match_all('/(from|join)\s+`?'.preg_replace('/[0-9]+/', 'XX', _DB_PREFIX_).'([a-z0-9_-]+)/ui', $query2, $matches);
			foreach ($matches[2] as $table)
			{
				if (!isset($this->tables[$table]))
					$this->tables[$table] = 0;
				$this->tables[$table]++;
			}
			
			$query = $this->disableCache($query);
			$t0 = microtime(true);
			
			$return = parent::delete($table, $where, $limit, $use_cache);

			if (!isset($this->queriesTime[$query]))
				$this->queriesTime[$query] = microtime(true)-$t0;
				
			return $return;
		}
		return false;
	}

	protected function q($query, $use_cache = 1)
	{
		$this->count++;
		$this->countTypes['q']++;
		$query2 = preg_replace('/[0-9]+/', '<span style="color:blue">XX</span>', $query);
		if (!isset($this->queries[$query2]))
			$this->queries[$query2] = 0;
		$this->queries[$query2]++;
		preg_match_all('/(from|join)\s+`?'.preg_replace('/[0-9]+/', 'XX', _DB_PREFIX_).'([a-z0-9_-]+)/ui', $query2, $matches);
		foreach ($matches[2] as $table)
		{
			if (!isset($this->tables[$table]))
				$this->tables[$table] = 0;
			$this->tables[$table]++;
		}
		
		$query = $this->disableCache($query);
		$t0 = microtime(true);
		
		$return = parent::q($query, $use_cache);

		if (!isset($this->queriesTime[$query]))
			$this->queriesTime[$query] = microtime(true)-$t0;
			
		return $return;
	}
}
