1/*2 * $Id: AttributeEvaluator.java 644022 2008-04-02 19:46:59Z apetrelli $3 *4 * Licensed to the Apache Software Foundation (ASF) under one5 * or more contributor license agreements. See the NOTICE file6 * distributed with this work for additional information7 * regarding copyright ownership. The ASF licenses this file8 * to you under the Apache License, Version 2.0 (the9 * "License"); you may not use this file except in compliance10 * with the License. You may obtain a copy of the License at11 *12 * http://www.apache.org/licenses/LICENSE-2.013 *14 * Unless required by applicable law or agreed to in writing,15 * software distributed under the License is distributed on an16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY17 * KIND, either express or implied. See the License for the18 * specific language governing permissions and limitations19 * under the License.20 */21package org.apache.tiles.evaluator;
2223import java.util.Map;
2425import org.apache.tiles.Attribute;
26import org.apache.tiles.context.TilesRequestContext;
2728/***29 * It represents an object that resolves a string to return an object.30 *31 * @version $Rev: 644022 $ $Date: 2008-04-02 21:46:59 +0200 (mer, 02 apr 2008) $32 * @since 2.1.033 */34publicinterfaceAttributeEvaluator {
3536/***37 * Initializes the attribute evaluator.38 *39 * @param initParameters The initialization parameters.40 * @since 2.1.041 */42void init(Map<String, String> initParameters);
4344/***45 * Evaluates an expression.46 *47 * @param expression The expression to evaluate.48 * @param request The request object.49 * @return The evaluated object.50 * @since 2.1.051 */52 Object evaluate(String expression, TilesRequestContext request);
5354/***55 * Evaluates an attribute value.56 *57 * @param attribute The attribute to evaluate.58 * @param request The request object.59 * @return The evaluated object.60 * @since 2.1.061 */62 Object evaluate(Attribute attribute, TilesRequestContext request);
63 }