View Javadoc

1   /*
2    * Copyright 2009 Red Hat, Inc.
3    *
4    * Red Hat licenses this file to you under the Apache License, version 2.0
5    * (the "License"); you may not use this file except in compliance with the
6    * License.  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, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package org.jboss.netty.channel;
17  
18  import static org.jboss.netty.channel.Channels.*;
19  
20  /**
21   * The default {@link WriteCompletionEvent} implementation.
22   *
23   * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
24   * @author <a href="http://gleamynode.net/">Trustin Lee</a>
25   *
26   * @version $Rev: 2210 $, $Date: 2010-03-04 08:11:39 +0900 (Thu, 04 Mar 2010) $
27   */
28  public class DefaultWriteCompletionEvent implements WriteCompletionEvent {
29  
30      private final Channel channel;
31      private final long writtenAmount;
32  
33      /**
34       * Creates a new instance.
35       */
36      public DefaultWriteCompletionEvent(Channel channel, long writtenAmount) {
37          if (channel == null) {
38              throw new NullPointerException("channel");
39          }
40          if (writtenAmount <= 0) {
41              throw new IllegalArgumentException(
42                      "writtenAmount must be a positive integer: " + writtenAmount);
43          }
44  
45          this.channel = channel;
46          this.writtenAmount = writtenAmount;
47      }
48  
49      public Channel getChannel() {
50          return channel;
51      }
52  
53      public ChannelFuture getFuture() {
54          return succeededFuture(getChannel());
55      }
56  
57      public long getWrittenAmount() {
58          return writtenAmount;
59      }
60  
61      @Override
62      public String toString() {
63          String channelString = getChannel().toString();
64          StringBuilder buf = new StringBuilder(channelString.length() + 32);
65          buf.append(channelString);
66          buf.append(" WRITTEN_AMOUNT: ");
67          buf.append(getWrittenAmount());
68          return buf.toString();
69      }
70  }