/* | |
* Copyright 2004 The Apache Software Foundation. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
package org.apache.pluto.driver.tags; | |
import java.io.IOException; | |
import java.io.PrintWriter; | |
import javax.servlet.jsp.JspException; | |
import javax.servlet.jsp.tagext.TagSupport; | |
/** | |
* The portlet render tag is used to print portlet rendering result (or error | |
* details) to the page. | |
* | |
* @author <a href="mailto:ddewolf@apache.org">David H. DeWolf</a> | |
* @version 1.0 | |
* @since Oct 4, 2004 | |
*/ | |
public class PortletRenderTag extends TagSupport { | |
// TagSupport Impl --------------------------------------------------------- | |
/** | |
* | |
* @see PortletTag | |
*/ | |
public int doEndTag() throws JspException { | |
// Ensure that the portlet render tag resides within a portlet tag. | |
PortletTag parentTag = (PortletTag) TagSupport.findAncestorWithClass( | |
this, PortletTag.class); | |
if (parentTag == null) { | |
throw new JspException("Portlet render tag may only reside " | |
+ "within a pluto:portlet tag."); | |
} | |
// If the portlet is rendered successfully, print the rendering result. | |
if (parentTag.getStatus() == PortletTag.SUCCESS) { | |
try { | |
StringBuffer buffer = parentTag.getPortalServletResponse() | |
.getInternalBuffer().getBuffer(); | |
pageContext.getOut().print(buffer.toString()); | |
} catch (IOException ex) { | |
throw new JspException(ex); | |
} | |
} | |
// Otherwise, print the error stack trace. | |
else { | |
try { | |
pageContext.getOut().print("Error rendering portlet."); | |
pageContext.getOut().print("<pre>"); | |
parentTag.getThrowable().printStackTrace( | |
new PrintWriter(pageContext.getOut())); | |
pageContext.getOut().print("</pre>"); | |
} catch (IOException ex) { | |
throw new JspException(ex); | |
} | |
} | |
// Return. | |
return SKIP_BODY; | |
} | |
} | |