/*
* $Header: /home/cvs/jakarta-struts/src/example/org/apache/struts/webapp/example/EditSubscriptionAction.java,v 1.10 2003/01/11 03:08:23 jmitchell Exp $
* $Revision: 1.10 $
* $Date: 2003/01/11 03:08:23 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Struts", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
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*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.struts.webapp.example;
import java.lang.reflect.InvocationTargetException;
import java.util.Locale;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletResponse;
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;
import org.apache.struts.util.MessageResources;
/**
* Implementation of <strong>Action</strong> that populates an instance of
* <code>SubscriptionForm</code> from the currently specified subscription.
*
* @struts.action
* path="/editSubscription"
* type="org.apache.struts.webapp.example.EditSubscriptionAction"
* attribute="subscriptionForm"
* scope="request"
* validate="false"
*
* @struts.action-forward
* name="failure"
* path="/mainMenu.jsp"
*
* @struts.action-forward
* name="success"
* path="/subscription.jsp"
*
* @author Craig R. McClanahan
* @version $Revision: 1.10 $ $Date: 2003/01/11 03:08:23 $
*/
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
/**
* Process the specified HTTP request, and create the corresponding HTTP
* response (or forward to another web component that will create it).
* Return an <code>ActionForward</code> instance describing where and how
* control should be forwarded, or <code>null</code> if the response has
* already been completed.
*
* @param mapping The ActionMapping used to select this instance
* @param actionForm The optional ActionForm bean for this request (if any)
* @param request The HTTP request we are processing
* @param response The HTTP response we are creating
*
* @exception Exception if the application business logic throws
* an exception
*/
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
// Extract attributes we will need
Locale locale = getLocale(request);
MessageResources messages = getResources(request);
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);
}
// Populate the subscription form
if (form == null) {
if (log.isTraceEnabled()) {
log.trace(" Creating new SubscriptionForm bean under key "
+ mapping.getAttribute());
}
form = new SubscriptionForm();
if ("request".equals(mapping.getScope())) {
request.setAttribute(mapping.getAttribute(), form);
} else {
session.setAttribute(mapping.getAttribute(), form);
}
}
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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