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1   /*
2    *
3    *   Copyright 2005 The Apache Software Foundation.
4    *
5    *  Licensed under the Apache License, Version 2.0 (the "License");
6    *  you may not use this file except in compliance with the License.
7    *  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   *
17   */
18  package org.apache.commons.scxml.env.jsp;
19  
20  import javax.servlet.jsp.el.ELException;
21  import javax.servlet.jsp.el.VariableResolver;
22  
23  import org.apache.commons.scxml.Context;
24  import org.apache.commons.scxml.env.SimpleContext;
25  
26  /***
27   * EL Context for SCXML interpreter.
28   *
29   */
30  public class ELContext extends SimpleContext implements VariableResolver {
31  
32      /***
33       * Constructor.
34       *
35       */
36      public ELContext() {
37          super();
38      }
39  
40      /***
41       * Constructor.
42       *
43       * @param parent A parent Context, can be null
44       */
45      public ELContext(final Context parent) {
46          super(parent);
47      }
48  
49      /***
50       * Resolves the specified variable. Returns null if the variable is
51       * not found.
52       *
53       * @param pName The variable to resolve
54       * @return Object The value of the variable, or null, if it does not
55       *                exist
56       * @throws ELException While resolving the variable
57       * @see javax.servlet.jsp.el.VariableResolver#resolveVariable(String)
58       */
59      public Object resolveVariable(final String pName) throws ELException {
60          return get(pName);
61      }
62  
63  }
64