/*
* $Header: /home/cvspublic/jakarta-struts/src/example/org/apache/struts/webapp/example/EditSubscriptionAction.java,v 1.18 2004/03/14 06:23:44 sraeburn Exp $
* $Revision: 1.18 $
* $Date: 2004/03/14 06:23:44 $
*
* Copyright 1999-2004 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.struts.webapp.example;
import java.lang.reflect.InvocationTargetException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
/**
* Implementation of <strong>Action</strong> that populates an instance of
* <code>SubscriptionForm</code> from the currently specified subscription.
*
* @version $Revision: 1.18 $ $Date: 2004/03/14 06:23:44 $
*/
public final class EditSubscriptionAction extends Action {
// ----------------------------------------------------- Instance Variables
/**
* The <code>Log</code> instance for this application.
*/
private Log log = LogFactory.getLog("org.apache.struts.webapp.Example");
// --------------------------------------------------------- Public Methods
// See superclass for Javadoc
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
// Extract attributes we will need
HttpSession session = request.getSession();
String action = request.getParameter("action");
if (action == null) {
action = "Create";
}
String host = request.getParameter("host");
if (log.isDebugEnabled()) {
log.debug("EditSubscriptionAction: Processing " + action + " action");
}
// Is there a currently logged on user?
User user = (User) session.getAttribute(Constants.USER_KEY);
if (user == null) {
if (log.isTraceEnabled()) {
log.trace(" User is not logged on in session " + session.getId());
}
return (mapping.findForward("logon"));
}
// Identify the relevant subscription
Subscription subscription =
user.findSubscription(request.getParameter("host"));
if ((subscription == null) && !action.equals("Create")) {
if (log.isTraceEnabled()) {
log.trace(
" No subscription for user "
+ user.getUsername()
+ " and host "
+ host);
}
return (mapping.findForward("failure"));
}
if (subscription != null) {
session.setAttribute(Constants.SUBSCRIPTION_KEY, subscription);
}
SubscriptionForm subform = (SubscriptionForm) form;
subform.setAction(action);
if (!action.equals("Create")) {
if (log.isTraceEnabled()) {
log.trace(" Populating form from " + subscription);
}
try {
PropertyUtils.copyProperties(subform, subscription);
subform.setAction(action);
} catch (InvocationTargetException e) {
Throwable t = e.getTargetException();
if (t == null)
t = e;
log.error("SubscriptionForm.populate", t);
throw new ServletException("SubscriptionForm.populate", t);
} catch (Throwable t) {
log.error("SubscriptionForm.populate", t);
throw new ServletException("SubscriptionForm.populate", t);
}
}
// Forward control to the edit subscription page
if (log.isTraceEnabled()) {
log.trace(" Forwarding to 'success' page");
}
return (mapping.findForward("success"));
}
}
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