HessianSkeletonInvoker


1   /*
2    * Copyright 2002-2006 the original author or authors.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
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.caucho;
18  
19  import java.io.InputStream  ;
20  import java.io.OutputStream  ;
21  
22  import com.caucho.hessian.server.HessianSkeleton;
23  import com.caucho.hessian.io.SerializerFactory;
24  
25  import org.springframework.util.Assert;
26  
27  /**
28   * Internal invoker strategy for a Hessian skeleton.
29   * Allows for common handling of Hessian protocol version 1 and 2.
30   *
31   * @author Juergen Hoeller
32   * @since 2.0
33   */
34  abstract class HessianSkeletonInvoker {
35  
36      /**
37       * Wrapped HessianSkeleton, available to subclasses.
38       */
39      protected final HessianSkeleton skeleton;
40  
41      /**
42       * Hessian SerializerFactory (if any), available to subclasses.
43       */
44      protected final SerializerFactory serializerFactory;
45  
46  
47      /**
48       * Create a new HessianSkeletonInvoker for the given skeleton.
49       * @param skeleton the HessianSkeleton to wrap
50       * @param serializerFactory the Hessian SerializerFactory to use, if any
51       */
52      public HessianSkeletonInvoker(HessianSkeleton skeleton, SerializerFactory serializerFactory) {
53          Assert.notNull(skeleton, "HessianSkeleton must not be null");
54          this.skeleton = skeleton;
55          this.serializerFactory = serializerFactory;
56      }
57  
58  
59      /**
60       * Invoke the given skeleton based on the given input/output streams.
61       * @param inputStream the stream containing the Hessian input
62       * @param outputStream the stream to receive the Hessian output
63       * @throws Throwable if the skeleton invocation failed
64       */
65      public abstract void invoke(InputStream   inputStream, OutputStream   outputStream) throws Throwable  ;
66  
67  }
68
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