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Java > Open Source Codes > org > apache > pluto > tags > NamespaceTag


1 /*
2  * Copyright 2003,2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * 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,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */

16 /*
17
18  */

19
20 package org.apache.pluto.tags;
21
22 import java.io.IOException JavaDoc;
23
24 import javax.portlet.RenderResponse;
25 import javax.servlet.jsp.JspException JavaDoc;
26 import javax.servlet.jsp.JspWriter JavaDoc;
27 import javax.servlet.jsp.tagext.TagSupport JavaDoc;
28
29 /**
30  * This tag produces a unique value for the current portlet.
31  *
32  *
33  * Supporting class for the <CODE>namespace</CODE> tag.
34  * writes a unique value for the current portlet
35  * <BR>This tag has no attributes
36  */

37 public class NamespaceTag extends TagSupport JavaDoc
38 {
39
40     /* (non-Javadoc)
41      * @see javax.servlet.jsp.tagext.Tag#doStartTag()
42      */

43     public int doStartTag() throws JspException JavaDoc {
44         RenderResponse renderResponse = (RenderResponse)pageContext.getRequest().getAttribute("javax.portlet.response");
45         String JavaDoc namespace = renderResponse.getNamespace();
46         JspWriter JavaDoc writer = pageContext.getOut();
47         try
48         {
49             writer.print(namespace);
50             writer.flush();
51         }
52         catch (IOException JavaDoc ioe)
53         {
54             throw new JspException JavaDoc("namespace Tag Exception: cannot write to the output writer.");
55         }
56         return SKIP_BODY;
57     }
58 }
59
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