package org.apache.jetspeed.services.jsp.tags;
/*
* 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.
*/
// Servlet API
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.tagext.TagSupport;
// Turbine Classes
import org.apache.turbine.util.DynamicURI;
import org.apache.turbine.services.jsp.JspService;
// ECS support
import org.apache.ecs.ConcreteElement;
import org.apache.ecs.StringElement;
// Jetspeed support
import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
import org.apache.jetspeed.services.logging.JetspeedLogger;
import org.apache.jetspeed.services.rundata.JetspeedRunData;
import org.apache.jetspeed.services.forward.ForwardService;
import org.apache.jetspeed.util.ServiceUtil;
/**
* Supporting class for the forward tag. Enables forwarding navigation to other pages or panes
* in the portal. If "name" and "target" are both specified, the "name" is assumed to be a portlet.
* If only "name" is specified, the name is assumed to be a logical forward name.
*
* @author <a href="mailto:morciuch@apache.org">Mark Orciuch</a>
* @version $Id: JetspeedForwardTag.java,v 1.3 2004/02/23 03:59:40 jford Exp $
* @see org.apache.jetspeed.services.forward.ForwardService#forward(RunData rundata, String forwardName)
* @see org.apache.jetspeed.services.forward.ForwardService#forward(RunData rundata, String portlet, String target)
* @since 1.4b4
*/
public class JetspeedForwardTag extends TagSupport
{
/**
* Static initialization of the logger for this class
*/
private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(JetspeedForwardTag.class.getName());
private String name = null;
private String target = null;
public void setName(String name)
{
this.name = name;
}
public String getName()
{
return this.name;
}
public void setTarget(String target)
{
this.target = target;
}
public String getTarget()
{
return this.target;
}
/**
* Method called when the tag is encountered to send attributes to the
* output stream
*
* @return SKIP_BODY, as it is intended to be a single tag.
*/
public int doStartTag() throws JspException
{
JetspeedRunData data = (JetspeedRunData) pageContext.getAttribute(JspService.RUNDATA, PageContext.REQUEST_SCOPE);
try
{
ConcreteElement result = null;
DynamicURI uri = null;
ForwardService service = (ForwardService) ServiceUtil.getServiceByName(ForwardService.SERVICE_NAME);
if (this.name != null && this.target != null)
{
uri = service.forward(data, this.name, this.target);
}
else if (this.getName() != null)
{
uri = service.forward(data, this.name);
}
if (uri != null)
{
result = new StringElement(uri.toString());
}
// Output the result
if (result != null)
{
pageContext.getOut().print(result);
}
}
catch (Exception e)
{
String message = "Error processing name '" + name + "'.";
logger.error(message, e);
try
{
data.getOut().print("Error processing forward name '" + name + "'. See log for more information.");
}
catch (java.io.IOException ioe)
{
}
}
return EVAL_BODY_INCLUDE;
}
}