Doctrine_Record::oid PHP Méthode

    public function oid()
    {
        return $this->_oid;
    }

 /**
  * Adds a record to collection
  *
  * @param Doctrine_Record $record              record to be added
  * @param string $key                          optional key for the record
  * @return boolean
  */
 public function add($record, $key = null)
 {
     if (isset($this->referenceField)) {
         $value = $this->reference->get($this->relation->getLocalFieldName());
         if ($value !== null) {
             $record->set($this->referenceField, $value, false);
         } else {
             $record->set($this->referenceField, $this->reference, false);
         }
         $relations = $this->relation['table']->getRelations();
         foreach ($relations as $relation) {
             if ($this->relation['class'] == $relation['localTable']->getOption('name') && $relation->getLocal() == $this->relation->getForeignFieldName()) {
                 $record->{$relation}['alias'] = $this->reference;
                 break;
             }
         }
     }
     $oid = $record->oid();
     if (isset($this->oids[$oid])) {
         return false;
     }
     if (isset($key)) {
         if (isset($this->data[$key])) {
             return false;
         }
         $this->data[$key] = $record;
         $this->oids[$oid] = true;
         return true;
     }
     if (isset($this->keyColumn)) {
         $value = $record->get($this->keyColumn);
         if ($value === null) {
             throw new Doctrine_Collection_Exception("Couldn't create collection index. Record field '" . $this->keyColumn . "' was null.");
         }
         $this->data[$value] = $record;
     } else {
         $this->data[] = $record;
     }
     $this->oids[$oid] = true;
     return true;
 }