1 /*
2 * $Id: Evaluator.java 1068494 2011-02-08 17:48:49Z apetrelli $
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21 package org.apache.tiles.eval;
22
23 import org.apache.tiles.request.Request;
24
25 /***
26 * It represents an object that resolves a string to return an object.
27 *
28 * @version $Rev: 1068494 $ $Date: 2011-02-08 17:48:49 +0000 (Tue, 08 Feb 2011) $
29 */
30 public interface Evaluator {
31
32 /***
33 * Evaluates an expression.
34 *
35 * @param expression The expression to evaluate.
36 * @param request The request object.
37 * @return The evaluated object.
38 */
39 Object evaluate(String expression, Request request);
40 }