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<?php
/**
*
* @package acm
* @copyright (c) 2005, 2009 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* ACM Null Caching
* @package acm
*/
class phpbb_cache_driver_null extends phpbb_cache_driver_base
{
/**
* Set cache path
*/
function __construct()
{
}
/**
* Load global cache
*/
function load()
{
return true;
}
/**
* Unload cache object
*/
function unload()
{
}
/**
* Save modified objects
*/
function save()
{
}
/**
* Tidy cache
*/
function tidy()
{
// This cache always has a tidy room.
set_config('cache_last_gc', time(), true);
}
/**
* Get saved cache object
*/
function get($var_name)
{
return false;
}
/**
* Put data into cache
*/
function put($var_name, $var, $ttl = 0)
{
}
/**
* Purge cache data
*/
function purge()
{
}
/**
* Destroy cache data
*/
function destroy($var_name, $table = '')
{
}
/**
* Check if a given cache entry exist
*/
function _exists($var_name)
{
return false;
}
/**
* Load cached sql query
*/
function sql_load($query)
{
return false;
}
/**
* {@inheritDoc}
*/
function sql_save(phpbb_db_driver $db, $query, $query_result, $ttl)
{
return $query_result;
}
/**
* Ceck if a given sql query exist in cache
*/
function sql_exists($query_id)
{
return false;
}
/**
* Fetch row from cache (database)
*/
function sql_fetchrow($query_id)
{
return false;
}
/**
* Fetch a field from the current row of a cached database result (database)
*/
function sql_fetchfield($query_id, $field)
{
return false;
}
/**
* Seek a specific row in an a cached database result (database)
*/
function sql_rowseek($rownum, $query_id)
{
return false;
}
/**
* Free memory used for a cached database result (database)
*/
function sql_freeresult($query_id)
{
return false;
}
}
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