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Java > Open Source Codes > org > apache > mina > example > haiku > ToHaikuIoFilter


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 package org.apache.mina.example.haiku;
20
21 import java.util.ArrayList JavaDoc;
22 import java.util.List JavaDoc;
23
24 import org.apache.mina.common.IoFilterAdapter;
25 import org.apache.mina.common.IoSession;
26
27 /**
28  * @author Apache Mina Project (dev@mina.apache.org)
29  * @version $Rev: $, $Date: $
30  */
31 public class ToHaikuIoFilter extends IoFilterAdapter {
32
33     @SuppressWarnings JavaDoc( { "unchecked" })
34     @Override JavaDoc
35     public void messageReceived(NextFilter nextFilter, IoSession session,
36             Object JavaDoc message) throws Exception JavaDoc {
37         List JavaDoc<String JavaDoc> phrases = (List JavaDoc<String JavaDoc>) session.getAttribute("phrases");
38
39         if (null == phrases) {
40             phrases = new ArrayList JavaDoc<String JavaDoc>();
41             session.setAttribute("phrases", phrases);
42         }
43
44         phrases.add((String JavaDoc) message);
45
46         if (phrases.size() == 3) {
47             session.removeAttribute("phrases");
48
49             super.messageReceived(nextFilter, session, new Haiku(phrases
50                     .toArray(new String JavaDoc[3])));
51         }
52     }
53 }
54
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