/**
  * Performs the work of inserting or updating the row in the database.
  *
  * If the object is new, it inserts it; otherwise an update is performed.
  * All related objects are also updated in this method.
  *
  * @param      PropelPDO $con
  * @return     int The number of rows affected by this insert/update and any referring fk objects' save() operations.
  * @throws     PropelException
  * @see        save()
  */
 protected function doSave(PropelPDO $con)
 {
     $affectedRows = 0;
     // initialize var to track total num of affected rows
     if (!$this->alreadyInSave) {
         $this->alreadyInSave = true;
         // We call the save method on the following object(s) if they
         // were passed to this object by their coresponding set
         // method.  This object relates to these object(s) by a
         // foreign key reference.
         if ($this->aMensaje !== null) {
             if ($this->aMensaje->isModified() || $this->aMensaje->isNew()) {
                 $affectedRows += $this->aMensaje->save($con);
             }
             $this->setMensaje($this->aMensaje);
         }
         if ($this->aUsuario !== null) {
             if ($this->aUsuario->isModified() || $this->aUsuario->isNew()) {
                 $affectedRows += $this->aUsuario->save($con);
             }
             $this->setUsuario($this->aUsuario);
         }
         // If this object has been modified, then save it to the database.
         if ($this->isModified()) {
             if ($this->isNew()) {
                 $pk = MensajeDestinoPeer::doInsert($this, $con);
                 $affectedRows += 1;
                 // we are assuming that there is only 1 row per doInsert() which
                 // should always be true here (even though technically
                 // BasePeer::doInsert() can insert multiple rows).
                 $this->setNew(false);
             } else {
                 $affectedRows += MensajeDestinoPeer::doUpdate($this, $con);
             }
             $this->resetModified();
             // [HL] After being saved an object is no longer 'modified'
         }
         $this->alreadyInSave = false;
     }
     return $affectedRows;
 }