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Java > Open Source Codes > examples > GreetUserMacro


1 /*
2  * This file is part of "SnipSnap Radeox Rendering Engine".
3  *
4  * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
5  * All Rights Reserved.
6  *
7  * Please visit http://radeox.org/ for updates and contact.
8  *
9  * --LICENSE NOTICE--
10  * This library is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * This library is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with this library; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23  * --LICENSE NOTICE--
24  */
25
26 package examples;
27
28 import org.snipsnap.render.context.SnipRenderContext;
29 import org.snipsnap.render.macro.SnipMacro;
30 import org.snipsnap.render.macro.parameter.SnipMacroParameter;
31 import org.snipsnap.user.User;
32
33 import java.io.IOException JavaDoc;
34 import java.io.Writer JavaDoc;
35
36 /**
37  * Example which shows howto get the User from the context.
38  *
39  * @author Stephan J. Schmidt
40  * @version $Id: GreetUserMacro.java 1606 2004-05-17 10:56:18Z leo $
41  */
42
43 // cut:start-1
44 public class GreetUserMacro extends SnipMacro {
45
46   public void execute(Writer JavaDoc writer, SnipMacroParameter params)
47     throws IllegalArgumentException JavaDoc, IOException JavaDoc {
48
49     SnipRenderContext context = params.getSnipRenderContext();
50     User user = (User)
51         context.getAttribute(SnipRenderContext.USER);
52     // Users which are not logged in are guests
53 if (user.isGuest()) {
54       writer.write("Hello, unknown friend.");
55     } else {
56       writer.write("Hello, " + user.getLogin());
57     }
58   }
59
60   public String JavaDoc getName() {
61     return "greet";
62   }
63 }
64 // cut:end-1
65
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