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Java > Open Source Codes > org > snipsnap > jsp > SnipTag


1 /*
2  * This file is part of "SnipSnap Wiki/Weblog".
3  *
4  * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
5  * All Rights Reserved.
6  *
7  * Please visit http://snipsnap.org/ for updates and contact.
8  *
9  * --LICENSE NOTICE--
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License
12  * as published by the Free Software Foundation; either version 2
13  * of the License, or (at your option) any later version.
14  *
15  * This program 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
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  * --LICENSE NOTICE--
24  */
25 package org.snipsnap.jsp;
26
27 import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager;
28 import org.radeox.util.logging.Logger;
29 import org.snipsnap.snip.Snip;
30 import org.snipsnap.snip.SnipSpaceFactory;
31
32 import javax.servlet.jsp.JspException JavaDoc;
33 import javax.servlet.jsp.tagext.TagSupport JavaDoc;
34 import java.io.IOException JavaDoc;
35
36 public class SnipTag extends TagSupport JavaDoc {
37   Snip snip = null;
38
39   public int doStartTag() throws JspException JavaDoc {
40     if (null != snip) {
41       try {
42         snip.appendTo(pageContext.getOut());
43       } catch (IOException JavaDoc e) {
44         Logger.warn("SnipTag: unable to write snip xml content: " + snip);
45       }
46     }
47     return super.doStartTag();
48   }
49
50   public void setSnip(String JavaDoc snip) {
51     try {
52       this.snip = (Snip) ExpressionEvaluatorManager.evaluate("snip", snip, Snip.class, this, pageContext);
53     } catch (JspException JavaDoc e) {
54       Logger.warn("unable to evaluate expression", e);
55     }
56   }
57
58   public void setName(String JavaDoc name) {
59     try {
60       String JavaDoc snipName = (String JavaDoc) ExpressionEvaluatorManager.evaluate("name", name, String JavaDoc.class, this, pageContext);
61       if (SnipSpaceFactory.getInstance().exists(snipName)) {
62         snip = SnipSpaceFactory.getInstance().load(snipName);
63       }
64     } catch (JspException JavaDoc e) {
65       Logger.warn("unable to evaluate expression", e);
66     }
67   }
68 }
69
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