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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.myfaces.el;
20  
21  import javax.el.ELException;
22  import javax.faces.context.FacesContext;
23  import javax.faces.el.EvaluationException;
24  import javax.faces.el.VariableResolver;
25  
26  import org.apache.myfaces.shared.util.Assert;
27  
28  /**
29   * This class is used to delegate {@link #resolveVariable(FacesContext, String)} to the el resolver of the application.
30   * 
31   * @author Mathias Broekelmann (latest modification by $Author: bommel $)
32   * @version $Revision: 1187700 $ $Date: 2011-10-22 07:19:37 -0500 (Sat, 22 Oct 2011) $
33   */
34  @SuppressWarnings("deprecation")
35  public class VariableResolverToApplicationELResolverAdapter extends VariableResolver
36  {
37      @Override
38      public Object resolveVariable(FacesContext facesContext, String name) throws EvaluationException
39      {
40          Assert.notNull(facesContext, "facesContext");
41          Assert.notNull(name, "name");
42  
43          try
44          {
45              return facesContext.getApplication().getELResolver().getValue(facesContext.getELContext(), null, name);
46          }
47          catch (ELException e)
48          {
49              throw new EvaluationException(e);
50          }
51      }
52  
53  }