/**
  * Inserts a new or updates an existing WFS. Replaces the old wfs2db function.
  * 
  * @return Boolean
  * @param $aWfs Wfs
  */
 public function insertOrUpdate($aWfs)
 {
     if (WfsToDb::exists($aWfs)) {
         return WfsToDb::update($aWfs);
     }
     return WfsToDb::insert($aWfs);
 }
 /**
  * Database wrapper function
  * 
  * @return Boolean
  */
 public function insert()
 {
     return WfsToDb::insert($this);
 }