/*
* Copyright 2000-2001,2004 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.jetspeed.portal.portlets.viewprocessor;
// Ecs
import org.apache.ecs.ElementContainer;
import org.apache.ecs.StringElement;
// Jetspeed portal
import org.apache.jetspeed.portal.Portlet;
import org.apache.jetspeed.portal.portlets.GenericMVCContext;
import org.apache.jetspeed.services.TemplateLocator;
import org.apache.jetspeed.services.Registry;
import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
import org.apache.jetspeed.services.logging.JetspeedLogger;
import org.apache.jetspeed.om.registry.PortletEntry;
import org.apache.jetspeed.util.ServiceUtil;
// Turbine stuff
import org.apache.turbine.services.jsp.JspService;
// Turbine util
import org.apache.turbine.util.RunData;
//java stuff
import java.util.Iterator;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.RequestDispatcher;
/**
* <b>JspViewProcessor</b> - MVC processor for serving jsp files.
* <p>
* The .jsp file location may be specified in two different ways:
* <li><b>using the "template" parameter</b> - the JspTemplateService will search portlets and then screens
* folder to locate the appropriate template. The template must be specifed in the "template"
* portlet parameter.
* <li><b>using relative url</b> - the .jsp template will be served directly bypassing the
* JspTemplateService. The template must be specifed in the portlet url property.
* Example: /html/welcome.jsp.
* <P>
*
* @author <a href="mailto:tkuebler@cisco.com">Tod Kuebler</a>
* @author <a href="mailto:weaver@apache.org">Scott Weaver</a>
* @author <a href="mailto:morciuch@apache.org">Mark Orciuch</a>
* @version $Id: $
*/
public class JSPViewProcessor
implements ViewProcessor
{
/**
* Static initialization of the logger for this class
*/
private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(JSPViewProcessor.class.getName());
/** Creates a new instance of JSPViewProcessor */
public JSPViewProcessor()
{
}
public Object processView(GenericMVCContext context)
{
Portlet portlet = (Portlet) context.get("portlet");
RunData data = (RunData) context.get("data");
HttpServletRequest request = data.getRequest();
String template = (String) context.get("template");
logger.info("JSPViewProcessor - processing template " + template);
try
{
// Allow access to portlet from .jsp template
request.setAttribute("portlet", portlet);
// put context in attribute so you can get to it from .jsp template
request.setAttribute("context", context);
// Add js_peid out of convenience
request.setAttribute("js_peid", portlet.getID());
// Add rundata out of convenience (JspService.RUNDATA differs from GenericMVCPortlet.RUNDATA)
request.setAttribute(JspService.RUNDATA, data);
// Retrieve the URL. For backward compatibility, use the URL first
// and then fallback to "template" parameter
PortletEntry pe = (PortletEntry) Registry.getEntry(Registry.PORTLET, portlet.getName());
// Files referenced from default templates folder will be processed
// using JspService. Otherwise, they will be loaded using EcsServletElement
// from where ever they came from.
if (pe.getURL() == null || pe.getURL().trim().length() == 0)
{
if (template != null && -1 == template.indexOf(".jsp"))
{
template = template + ".jsp";
}
logger.info("JSPViewProcessor - locating template - " + data.toString()
+ " - " + template);
//we use the template locator to translate the template
String locatedTemplate = TemplateLocator.locatePortletTemplate(data, template);
logger.info("JSPViewProcessor - located template: " + locatedTemplate);
/*if (locatedTemplate == null)
{
locatedTemplate = TemplateLocator.locateScreenTemplate(data, template);
if (locatedTemplate != null)
{
locatedTemplate = "/screens" + locatedTemplate;
}
logger.debug("JSPViewProcessor - located screen template: " + locatedTemplate);
} */
JspService service = (JspService) ServiceUtil.getServiceByName(JspService.SERVICE_NAME);
// this is only necessary if we don't run in a JSP page environment
// but better be safe than sorry...
service.addDefaultObjects(data);
// handle request
service.handleRequest(data, locatedTemplate);
}
else
{
// Build parameter list to be passed with the jsp
Iterator names = portlet.getPortletConfig().getInitParameterNames();
while (names.hasNext())
{
String name = (String) names.next();
String value = (String) portlet.getPortletConfig().getInitParameter(name);
data.getParameters().setString(name, value);
}
template = pe.getURL();
if (logger.isDebugEnabled())
{
logger.debug("JSPViewProcessor - serving jsp directly using: " + template);
}
// get the RequestDispatcher for the JSP
RequestDispatcher dispatcher = data.getServletContext().getRequestDispatcher(template);
data.getOut().flush();
dispatcher.include(data.getRequest(), data.getResponse());
}
}
catch (Exception e)
{
String message = "JSPViewProcessor: Could not include the following JSP Page: [" + template + "] :\n\t"
+ e.getMessage();
logger.error(message, e);
return new StringElement(message);
}
return new ElementContainer();
}
/** Process the template passed in the context
* (context.get("template")). Invoked by the GenericMVCPortlet
* after action handling to process the template type
* in question.
*
*/
public void init(Portlet portlet)
{
}
}