@ Override public void encodeBegin ( FacesContext context ) throws IOException { _initialDescendantComponentState = null ; if ( _isValidChilds && ! hasErrorMessages ( context ) ) { // Clear the data model so that when rendering code calls // getDataModel a fresh model is fetched from the backing // bean via the value-binding. _dataModelMap . clear ( ) ; // When the data model is cleared it is also necessary to // clear the saved row state, as there is an implicit 1:1 // relation between objects in the _rowStates and the // corresponding DataModel element. if ( ! isRowStatePreserved ( ) ) { _rowStates . clear ( ) ; } } super . encodeBegin ( context ) ; }
Perform necessary actions when rendering of this component starts before delegating to the inherited implementation which calls the associated renderer s encodeBegin method .