01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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.jbi.resolver;
18:
19: import javax.jbi.JBIException;
20: import javax.jbi.component.ComponentContext;
21: import javax.jbi.messaging.MessageExchange;
22: import javax.jbi.servicedesc.ServiceEndpoint;
23:
24: /**
25: * A Strategy pattern which can be used to plug in different {@link ServiceEndpoint} resolving policies from static
26: * relationships to dynamic resolution of the endpoint used based on some policy.
27: *
28: * @version $Revision: 426415 $
29: */
30: public interface EndpointResolver {
31:
32: /**
33: * Resolves the endpoint which should be used for the given message exchange
34: * using either a hard coded endpoint or some policy which chooses the endpoint
35: * dynamically using some algorithm.
36: *
37: * @param context is the component context
38: * @param exchange the message exchange which the endpoint will be used for which may
39: * contain some state to help choose the algorithm.
40: * @param filter the filter to be applied to the available endpoints
41: * @return the chosen endpoint or null if no endpoint could be found.
42: */
43: ServiceEndpoint resolveEndpoint(ComponentContext context,
44: MessageExchange exchange, EndpointFilter filter)
45: throws JBIException;
46:
47: /**
48: * Resolves all the available endpoints which may not be applicable to a component.
49: */
50: ServiceEndpoint[] resolveAvailableEndpoints(
51: ComponentContext context, MessageExchange exchange)
52: throws JBIException;
53: }
|