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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with 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,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License.
18   *
19   */
20  package org.apache.mina.core.write;
21  
22  import java.net.SocketAddress;
23  
24  import org.apache.mina.core.future.WriteFuture;
25  
26  /**
27   * A wrapper for an existing {@link WriteRequest}.
28   *
29   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
30   */
31  public class WriteRequestWrapper implements WriteRequest {
32  
33      private final WriteRequest parentRequest;
34  
35      /**
36       * Creates a new instance that wraps the specified request.
37       */
38      public WriteRequestWrapper(WriteRequest parentRequest) {
39          if (parentRequest == null) {
40              throw new NullPointerException("parentRequest");
41          }
42          this.parentRequest = parentRequest;
43      }
44  
45      public SocketAddress getDestination() {
46          return parentRequest.getDestination();
47      }
48  
49      public WriteFuture getFuture() {
50          return parentRequest.getFuture();
51      }
52  
53      public Object getMessage() {
54          return parentRequest.getMessage();
55      }
56  
57      public WriteRequest getOriginalRequest() {
58          return parentRequest.getOriginalRequest();
59      }
60  
61      /**
62       * Returns the wrapped request object.
63       */
64      public WriteRequest getParentRequest() {
65          return parentRequest;
66      }
67  
68      @Override
69      public String toString() {
70          if (getDestination() == null) {
71              return getMessage().toString();
72          }
73          
74          return getMessage().toString() + " => " + getDestination();
75      }
76  }