01: /*
02: * Copyright 2002-2005 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package org.springframework.remoting.httpinvoker;
18:
19: import java.io.IOException;
20:
21: import org.springframework.remoting.support.RemoteInvocation;
22: import org.springframework.remoting.support.RemoteInvocationResult;
23:
24: /**
25: * Strategy interface for actual execution of an HTTP invoker request.
26: * Used by HttpInvokerClientInterceptor and its subclass
27: * HttpInvokerProxyFactoryBean.
28: *
29: * <p>Two implementations are provided out of the box:
30: * <ul>
31: * <li><b>SimpleHttpInvokerRequestExecutor:</b>
32: * Uses J2SE facilities to execute POST requests, without support
33: * for HTTP authentication or advanced configuration options.
34: * <li><b>CommonsHttpInvokerRequestExecutor:</b>
35: * Uses Jakarta's Commons HttpClient to execute POST requests,
36: * allowing to use a preconfigured HttpClient instance
37: * (potentially with authentication, HTTP connection pooling, etc).
38: * </ul>
39: *
40: * @author Juergen Hoeller
41: * @since 1.1
42: * @see HttpInvokerClientInterceptor#setHttpInvokerRequestExecutor
43: */
44: public interface HttpInvokerRequestExecutor {
45:
46: /**
47: * Execute a request to send the given remote invocation.
48: * @param config the HTTP invoker configuration that specifies the
49: * target service
50: * @param invocation the RemoteInvocation to execute
51: * @return the RemoteInvocationResult object
52: * @throws IOException if thrown by I/O operations
53: * @throws ClassNotFoundException if thrown during deserialization
54: * @throws Exception in case of general errors
55: */
56: RemoteInvocationResult executeRequest(
57: HttpInvokerClientConfiguration config,
58: RemoteInvocation invocation) throws Exception;
59:
60: }
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