CompositeFieldConstraint.COMPOSITE_TYPE_AND );
composites.addItem( Constants.INSTANCE.AnyOfOr(),
CompositeFieldConstraint.COMPOSITE_TYPE_OR );
composites.setSelectedIndex( 0 );
composites.addChangeHandler( new ChangeHandler() {
public void onChange( ChangeEvent event ) {
CompositeFieldConstraint comp = new CompositeFieldConstraint();
comp.setCompositeJunctionType( composites.getValue( composites.getSelectedIndex() ) );
hasConstraints.addConstraint( comp );
modeller.refreshWidget();