$nid=db_query("SELECT nid FROM {node} WHERE nid = %d",array(':nid'=>$value))->fetchField();
$nid=db_query("SELECT nid FROM {node} WHERE nid = :nid",array(':nid'=>$value))->fetchField();
break;
break;
case'url':
case'url':
$nid=db_query("SELECT nid FROM {feeds_node_item} WHERE feed_nid = :nid AND id = :id AND url = :url",array(':nid'=>$source->feed_nid,':id'=>$source->id,':url'=>$value))->fetchField();
$nid=db_query("SELECT nid FROM {feeds_node_item} WHERE feed_nid = :nid AND id = :id AND url = :url",array(':nid'=>$source->feed_nid,':id'=>$source->id,':url'=>$value))->fetchField();