/**
  * If this collection has already been initialized with
  * an identical criteria, it returns the collection.
  * Otherwise if this Agent is new, it will return
  * an empty collection; or if this Agent has previously
  * been saved, it will retrieve related Vocabularys 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 Agent.
  */
 public function getVocabularysJoinStatus($criteria = null, $con = null)
 {
     // include the Peer class
     include_once 'lib/model/om/BaseVocabularyPeer.php';
     if ($criteria === null) {
         $criteria = new Criteria();
     } elseif ($criteria instanceof Criteria) {
         $criteria = clone $criteria;
     }
     if ($this->collVocabularys === null) {
         if ($this->isNew()) {
             $this->collVocabularys = array();
         } else {
             $criteria->add(VocabularyPeer::AGENT_ID, $this->getId());
             $this->collVocabularys = VocabularyPeer::doSelectJoinStatus($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(VocabularyPeer::AGENT_ID, $this->getId());
         if (!isset($this->lastVocabularyCriteria) || !$this->lastVocabularyCriteria->equals($criteria)) {
             $this->collVocabularys = VocabularyPeer::doSelectJoinStatus($criteria, $con);
         }
     }
     $this->lastVocabularyCriteria = $criteria;
     return $this->collVocabularys;
 }