001    /**
002     * Copyright 2005-2011 The Kuali Foundation
003     *
004     * Licensed under the Educational Community License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.opensource.org/licenses/ecl2.php
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.kuali.rice.krms.framework.engine.expression;
017    
018    import org.kuali.rice.krms.api.engine.ExecutionEnvironment;
019    
020    /**
021     * TODO...
022     * 
023     * @author Kuali Rice Team (rice.collab@kuali.org)
024     * 
025     */
026    public final class ConstantExpression<T> implements Expression<T> {
027    
028            private final T value;
029    
030            public ConstantExpression(T value) {
031                    this.value = value;
032            }
033    
034            @Override
035            public T invoke(ExecutionEnvironment environment) {
036                    return value;
037            }
038    
039    }