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Java > Open Source Codes > xmladder > CommandHandler


1 /*
2  * This file is part of the QuickServer library
3  * Copyright (C) 2003-2005 QuickServer.org
4  *
5  * Use, modification, copying and distribution of this software is subject to
6  * the terms and conditions of the GNU Lesser General Public License.
7  * You should have received a copy of the GNU LGP License along with this
8  * library; if not, you can download a copy from <http://www.quickserver.org/>.
9  *
10  * For questions, suggestions, bug-reports, enhancement-requests etc.
11  * visit http://www.quickserver.org
12  *
13  */
14
15 package xmladder;
16
17 import java.net.*;
18 import java.io.*;
19 import org.quickserver.net.server.ClientCommandHandler;
20 import org.quickserver.net.server.ClientEventHandler;
21 import org.quickserver.net.server.ClientHandler;
22 import org.quickserver.net.server.DataMode;
23 import org.quickserver.net.server.DataType;
24 import java.util.logging.*;
25
26 public class CommandHandler implements ClientEventHandler, ClientCommandHandler {
27     private static Logger logger = Logger.getLogger(
28             CommandHandler.class.getName());
29     
30     private final static String JavaDoc welcome = "<welcome name=\"XmlAdder v1.0\">"+
31             "\n"+"<note>Send <quit /> to close connection</note>";
32
33     //--ClientEventHandler
34 public void gotConnected(ClientHandler handler)
35             throws SocketTimeoutException, IOException {
36         logger.fine("Connection opened : "+handler.getHostAddress());
37         /*
38         //pick from xml
39         handler.setDataMode(DataMode.BYTE, DataType.IN);
40         handler.setDataMode(DataMode.BYTE, DataType.OUT);
41         */
42         handler.sendClientBytes(welcome);
43     }
44
45     public void lostConnection(ClientHandler handler)
46             throws IOException {
47         logger.fine("Connection lost : "+handler.getHostAddress());
48     }
49     public void closingConnection(ClientHandler handler)
50             throws IOException {
51         handler.sendSystemMsg("Connection closed: "+handler.getHostAddress(), Level.FINE);
52     }
53     //--ClientEventHandler
54
55     public void handleCommand(ClientHandler handler, String JavaDoc command)
56             throws SocketTimeoutException, IOException {
57         AddNumberReq addNumberReq = null;
58         AddNumberRes addNumberRes = new AddNumberRes();
59         command = command.trim();
60         try {
61             if(command.equals("<quit />")) {
62                 handler.sendClientBytes("<bye />");
63                 handler.closeConnection();
64                 return;
65             }
66
67             Data data = (Data)handler.getClientData();
68             data.addXmlPart(command);
69     
70             String JavaDoc xmlToProcess = null;
71             while(true) {
72                 xmlToProcess = data.getNextXML();
73                 if(xmlToProcess==null)
74                     break;
75                 
76                 logger.fine("Got xml to process from data \n:"+xmlToProcess);
77
78                 addNumberReq = AddNumberReq.fromXML(xmlToProcess);
79                 if(addNumberReq==null) {
80                     addNumberRes.setType("error");
81                     addNumberRes.setValue("Bad XML Got!");
82                 }
83                 
84                 int a = addNumberReq.getNumberA();
85                 int b = addNumberReq.getNumberB();
86                 int c = a + b;
87                 
88                 addNumberRes.setType("sum");
89                 addNumberRes.setValue(""+c);
90                 handler.sendClientBytes(addNumberRes.toXML());
91             }
92         } catch(IOException e) {
93             throw e;
94         } catch(Exception JavaDoc e) {
95             addNumberRes.setType("error");
96             addNumberRes.setValue("Exception : "+e);
97             handler.sendClientBytes(addNumberRes.toXML());
98         }
99     }
100 }
101
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