/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * Licensed 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 javax.faces.el;

 import javax.faces.context.FacesContext;

 /**

  * @author shot

  */

 public abstract class ValueBinding {

     public ValueBinding() {

     }

     public abstract Object getValue(FacesContext context)

             throws EvaluationException, PropertyNotFoundException;

     public abstract void setValue(FacesContext context, Object value)

             throws EvaluationException, PropertyNotFoundException;

     public abstract boolean isReadOnly(FacesContext context)

             throws EvaluationException, PropertyNotFoundException;

     public abstract Class getType(FacesContext context)

             throws EvaluationException, PropertyNotFoundException;

     public String getExpressionString() {

         return null;

     }

 }