001/**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one or more
004 * contributor license agreements.  See the NOTICE file distributed with
005 * this work for additional information regarding copyright ownership.
006 * The ASF licenses this file to You under the Apache License, Version 2.0
007 * (the "License"); you may not use this file except in compliance with
008 * the License.  You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.granite.gravity.selector;
020
021import javax.jms.JMSException;
022
023/**
024 * Represents an expression
025 *
026 * @version $Revision: 1.2 $
027 */
028public interface Expression {
029
030    /**
031     * @return the value of this expression
032     */
033    public Object evaluate(MessageEvaluationContext message) throws JMSException;
034
035}