/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *   http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 package org.apache.myfaces.el;

 import javax.el.ELContext;

 import javax.faces.context.FacesContext;

 import javax.faces.el.EvaluationException;

 import javax.faces.el.PropertyNotFoundException;

 import javax.faces.el.PropertyResolver;

 /**

  * Default PropertyResolver.  See JSF 1.2 spec section 5.8.2

  *

  * @author Stan Silvert

  */

 public final class NullPropertyResolver extends PropertyResolver {

     /** Creates a new instance of NullPropertyResolver */

     public NullPropertyResolver() {

     }

     public boolean isReadOnly(Object base, int index) throws EvaluationException, PropertyNotFoundException {

         elContext().setPropertyResolved(false);

         return false;

     }

     public boolean isReadOnly(Object base, Object property) throws EvaluationException, PropertyNotFoundException {

         elContext().setPropertyResolved(false);

         return false;

     }

     public Object getValue(Object base, int index) throws EvaluationException, PropertyNotFoundException {

         elContext().setPropertyResolved(false);

         return null;

     }

     public Object getValue(Object base, Object property) throws EvaluationException, PropertyNotFoundException {

         elContext().setPropertyResolved(false);

         return null;

     }

     public Class getType(Object base, int index) throws EvaluationException, PropertyNotFoundException {

         elContext().setPropertyResolved(false);

         return null;

     }

      public Class getType(Object base, Object property) throws EvaluationException, PropertyNotFoundException {

         elContext().setPropertyResolved(false);

         return null;

     }

     public void setValue(Object base, Object property, Object value) throws EvaluationException, PropertyNotFoundException {

         elContext().setPropertyResolved(false);

     }

     public void setValue(Object base, int index, Object value) throws EvaluationException, PropertyNotFoundException {

         elContext().setPropertyResolved(false);

     }

     private ELContext elContext() {

         return FacesContext.getCurrentInstance().getELContext();

     }

 }