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Java > Open Source Codes > org > apache > activemq > filter > Expression


1 /**
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one or more
4  * contributor license agreements. See the NOTICE file distributed with
5  * this work for additional information regarding copyright ownership.
6  * The ASF licenses this file to You under the Apache License, Version 2.0
7  * (the "License"); you may not use this file except in compliance with
8  * the License. You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18
19 package org.apache.activemq.filter;
20
21 import javax.jms.JMSException JavaDoc;
22
23
24 /**
25  * Represents an expression
26  *
27  * @version $Revision: 1.2 $
28  */
29 public interface Expression {
30
31     /**
32      * @return the value of this expression
33      */
34     public Object JavaDoc evaluate(MessageEvaluationContext message) throws JMSException JavaDoc;
35     
36 }
37
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