function flush_cache()
{
$this->_reset_run(array('ar_cache_select' => array(), 'ar_cache_from' => array(), 'ar_cache_join' => array(), 'ar_cache_where' => array(), 'ar_cache_like' => array(), 'ar_cache_groupby' => array(), 'ar_cache_having' => array(), 'ar_cache_orderby' => array(), 'ar_cache_set' => array(), 'ar_cache_exists' => array()));
}