protected void beforeLoading ( ) { if ( _listeners != null ) { CollectionProxyListener listener ; if ( _perThreadDescriptorsEnabled ) { loadProfileIfNeeded ( ) ; } for ( int idx = _listeners . size ( ) - 1 ; idx >= 0 ; idx -- ) { listener = ( CollectionProxyListener ) _listeners . get ( idx ) ; listener . beforeLoading ( this ) ; } } }
Notifies all listeners that the data is about to be loaded .