1 /**
2 * Copyright 2005-2016 The Kuali Foundation
3 *
4 * Licensed under the Educational Community License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.opensource.org/licenses/ecl2.php
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.kuali.rice.krms.framework.engine.expression;
17
18 import org.kuali.rice.krms.api.engine.ExecutionEnvironment;
19
20 /**
21 * The {@link Expression} used in Construction will be returned when invoked with any given {@link ExecutionEnvironment}
22 * @author Kuali Rice Team (rice.collab@kuali.org)
23 *
24 */
25 public final class ConstantExpression<T> implements Expression<T> {
26
27 private final T value;
28
29 /**
30 * Create a ConstantExpression with the given value
31 * @param value to set the value to
32 */
33 public ConstantExpression(T value) {
34 this.value = value;
35 }
36
37 @Override
38 public T invoke(ExecutionEnvironment environment) {
39 return value;
40 }
41
42 }