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Java > Open Source Codes > org > apache > turbine > pipeline > JspRendererValve


1 package org.apache.turbine.pipeline;
2
3 /* ====================================================================
4  * The Apache Software License, Version 1.1
5  *
6  * Copyright (c) 2001-2003 The Apache Software Foundation. All rights
7  * reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution,
22  * if any, must include the following acknowledgment:
23  * "This product includes software developed by the
24  * Apache Software Foundation (http://www.apache.org/)."
25  * Alternately, this acknowledgment may appear in the software itself,
26  * if and wherever such third-party acknowledgments normally appear.
27  *
28  * 4. The names "Apache" and "Apache Software Foundation" and
29  * "Apache Turbine" must not be used to endorse or promote products
30  * derived from this software without prior written permission. For
31  * written permission, please contact apache@apache.org.
32  *
33  * 5. Products derived from this software may not be called "Apache",
34  * "Apache Turbine", nor may "Apache" appear in their name, without
35  * prior written permission of the Apache Software Foundation.
36  *
37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
50  *
51  * This software consists of voluntary contributions made by many
52  * individuals on behalf of the Apache Software Foundation. For more
53  * information on the Apache Software Foundation, please see
54  * <http://www.apache.org/>.
55  */
56
57 import java.io.IOException JavaDoc;
58
59 import org.apache.turbine.RunData;
60 import org.apache.turbine.TurbineException;
61 import org.apache.turbine.ValveContext;
62 import org.apache.commons.logging.Log;
63 import org.apache.commons.logging.LogFactory;
64
65 /**
66  * Valve that delegates to JspRenderer to produce a view
67  * based on JSP.
68  *
69  * @author <a HREF="mailto:jvanzyl@apache.org">Jason van Zyl</a>
70  * @version $Id: JspRendererValve.java,v 1.5 2003/11/23 00:42:22 mpoeschl Exp $
71  */
72 public class JspRendererValve
73     extends AbstractValve
74 {
75     private static final Log log = LogFactory.getLog(JspRendererValve.class);
76
77     /**
78      * @see org.apache.turbine.Valve#invoke(RunData, ValveContext)
79      */
80     public void invoke(RunData data, ValveContext context)
81         throws IOException JavaDoc, TurbineException
82     {
83         try
84         {
85             String JavaDoc jsp = data.getTarget();
86             render(data,jsp);
87         }
88         catch (Exception JavaDoc e)
89         {
90             throw new TurbineException(e);
91         }
92
93         // Pass control to the next Valve in the Pipeline
94 context.invokeNext(data);
95     }
96
97     protected void render(RunData data, String JavaDoc jsp)
98         throws Exception JavaDoc
99     {
100         if (log.isDebugEnabled())
101         {
102             log.debug("Rendering target " + jsp);
103         }
104
105         JspRenderer r = new JspRenderer(data);
106         r.render(jsp,true);
107     }
108 }
109
110
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