/**
  * If this collection has already been initialized with
  * an identical criteria, it returns the collection.
  * Otherwise if this BpmnDiagram is new, it will return
  * an empty collection; or if this BpmnDiagram has previously
  * been saved, it will retrieve related BpmnBounds from storage.
  *
  * This method is protected by default in order to keep the public
  * api reasonable.  You can provide public methods for those you
  * actually need in BpmnDiagram.
  */
 public function getBpmnBoundsJoinBpmnProject($criteria = null, $con = null)
 {
     // include the Peer class
     include_once 'classes/model/om/BaseBpmnBoundPeer.php';
     if ($criteria === null) {
         $criteria = new Criteria();
     } elseif ($criteria instanceof Criteria) {
         $criteria = clone $criteria;
     }
     if ($this->collBpmnBounds === null) {
         if ($this->isNew()) {
             $this->collBpmnBounds = array();
         } else {
             $criteria->add(BpmnBoundPeer::DIA_UID, $this->getDiaUid());
             $this->collBpmnBounds = BpmnBoundPeer::doSelectJoinBpmnProject($criteria, $con);
         }
     } else {
         // the following code is to determine if a new query is
         // called for.  If the criteria is the same as the last
         // one, just return the collection.
         $criteria->add(BpmnBoundPeer::DIA_UID, $this->getDiaUid());
         if (!isset($this->lastBpmnBoundCriteria) || !$this->lastBpmnBoundCriteria->equals($criteria)) {
             $this->collBpmnBounds = BpmnBoundPeer::doSelectJoinBpmnProject($criteria, $con);
         }
     }
     $this->lastBpmnBoundCriteria = $criteria;
     return $this->collBpmnBounds;
 }