2009/05/20 - Apache Shale has been retired.

 /*

  * 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.shale.test.el;

 import java.util.HashMap;

 import java.util.Map;

 import javax.el.ValueExpression;

 import javax.el.VariableMapper;

 /**

  * <p>Mock implementation of <code>VariableMapper</code>.</p>

  *

  * @since 1.0.4

  */

 public class MockVariableMapper extends VariableMapper {

     // ------------------------------------------------------------ Constructors

     /** Creates a new instance of MockVariableMapper */

     public MockVariableMapper() {

     }

     // ------------------------------------------------------ Instance Variables

     /**

      * <p>Map of <code>ValueExpression</code>s, keyed by variable name.</p>

      */

     private Map expressions = new HashMap();

     // ----------------------------------------------------- Mock Object Methods

     // -------------------------------------------------- FunctionMapper Methods

     /** {@inheritDoc} */

     public ValueExpression resolveVariable(String variable) {

         return (ValueExpression) expressions.get(variable);

     }

     /** {@inheritDoc} */

     public ValueExpression setVariable(String variable, ValueExpression expression) {

         ValueExpression original = (ValueExpression) expressions.get(variable);

         if (expression == null) {

             expressions.remove(variable);

         } else {

             expressions.put(variable, expression);

         }

         return original;

     }

 }