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Java > Open Source Codes > org > apache > servicemix > components > router > RoutingRule


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 package org.apache.servicemix.components.router;
18
19 import org.apache.servicemix.jbi.resolver.EndpointFilter;
20 import org.apache.servicemix.jbi.resolver.EndpointResolver;
21 import org.apache.servicemix.jbi.resolver.NullEndpointFilter;
22
23 import javax.jbi.JBIException;
24 import javax.jbi.component.ComponentContext;
25 import javax.jbi.messaging.MessageExchange;
26 import javax.jbi.servicedesc.ServiceEndpoint;
27
28 /**
29  * A simple routing rule which if the predicate is matched then the message is forwarded to
30  * the given endpoint.
31  *
32  * @version $Revision: 426415 $
33  */
34 public class RoutingRule {
35     private Predicate predicate;
36     private EndpointResolver resolver;
37     private EndpointFilter filter = NullEndpointFilter.getInstance();
38
39     public EndpointFilter getFilter() {
40         return filter;
41     }
42
43     public void setFilter(EndpointFilter filter) {
44         this.filter = filter;
45     }
46
47     public Predicate getPredicate() {
48         return predicate;
49     }
50
51     public void setPredicate(Predicate predicate) {
52         this.predicate = predicate;
53     }
54
55     public EndpointResolver getResolver() {
56         return resolver;
57     }
58
59     public void setResolver(EndpointResolver resolver) {
60         this.resolver = resolver;
61     }
62
63     public void onMessageExchange(ComponentContext context, MessageExchange exchange) throws JBIException {
64         if (predicate.evaluate(context, exchange)) {
65
66             // lets forward the message on to the endpoint
67 ServiceEndpoint endpoint = resolver.resolveEndpoint(context, exchange, filter);
68             exchange.setEndpoint(endpoint);
69         }
70     }
71
72
73 }
74
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