/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.gatein.cdi.contexts;
import java.lang.annotation.Annotation;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.gatein.api.cdi.context.PortletRedisplayScoped;
import org.gatein.cdi.contexts.beanstore.ResourceTempBeanStore;
import org.gatein.cdi.contexts.beanstore.SessionBeanStore;
import static javax.portlet.PortletRequest.*;
/**
* @author <a href="mailto:nscavell@redhat.com">Nick Scavelli</a>
* @author <a href="http://community.jboss.org/people/kenfinni">Ken Finnigan</a>
*/
public class PortletRedisplayedContextImpl extends AbstractCDIPortletContext implements PortletRedisplayedContext {
private static final String TRANSITION_PREFIX = PortletRequestLifecycle.class.getName();
private static final String TRANSITION_DELIM = "#";
public PortletRedisplayedContextImpl() {
super(true);
}
@Override
public Class<? extends Annotation> getScope() {
return PortletRedisplayScoped.class;
}
@Override
public void transition(final HttpServletRequest request, final String windowId, final PortletRequestLifecycle.State state) {
if (getBeanStore() == null) {
if (state.isPhase(RESOURCE_PHASE)) {
setBeanStore(new ResourceTempBeanStore(request));
} else {
setBeanStore(new SessionBeanStore(request));
}
}
String attributeName = prefix(windowId);
if (state.isPhase(RESOURCE_PHASE)) {
attributeName = Thread.currentThread().getId() + attributeName;
}
SessionBeanStore store = (SessionBeanStore) getBeanStore();
HttpSession session = store.getSession(true);
PortletRequestLifecycle lifecycle = getLifecycle(windowId);
if (lifecycle == null) {
lifecycle = (PortletRequestLifecycle) session.getAttribute(attributeName);
if (lifecycle == null) {
lifecycle = new PortletRequestLifecycle();
} else {
// This check ensures we don't keep adding transitions and get into some strange state.
if (lifecycle.size() > 6) { // Most we can have is an action->event->render (with a start and end for each phase, that's 6)
destroy(windowId);
lifecycle = new PortletRequestLifecycle();
}
}
}
// Logic on the lifecycle
if (state.started()) {
if (state.isPhase(ACTION_PHASE)) {
destroy(windowId);
lifecycle = new PortletRequestLifecycle();
} else if (state.isPhase(EVENT_PHASE) && lifecycle.last() == null) {
destroy(windowId);
lifecycle = new PortletRequestLifecycle();
}
} else if (state.ended()) {
if (state.isPhase(RENDER_PHASE, RESOURCE_PHASE)) {
lifecycle = null;
if (state.isPhase(RESOURCE_PHASE)) {
destroy(windowId);
}
setBeanStore(null);
}
}
if (lifecycle != null) {
lifecycle.addNext(state);
session.setAttribute(attributeName, lifecycle);
} else { // We assume it's the end of the lifecycle so remove it from the session
session.removeAttribute(attributeName);
}
setCurrentLifecycle(windowId, lifecycle);
}
@Override
public void dissociate(final HttpSession session) {
setBeanStore(new SessionBeanStore(session));
destroy();
Enumeration<String> names = session.getAttributeNames();
while (names.hasMoreElements()) {
String name = names.nextElement();
if (name.startsWith(TRANSITION_PREFIX)) {
session.removeAttribute(name);
}
}
}
private static String prefix(String id) {
return TRANSITION_PREFIX + TRANSITION_DELIM + id;
}
}