/*
* Copyright (C) 2009 eXo Platform SAS.
*
* 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.exoplatform.container.component;
import org.exoplatform.container.ExoContainer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.IdentityHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
class RequestLifeCycleStack
extends LinkedList<RequestLifeCycle>
{
/** . */
private final Set<ComponentRequestLifecycle> allComponents = new HashSet<ComponentRequestLifecycle>();
RequestLifeCycleStack()
{
}
void begin(ComponentRequestLifecycle lifeCycle)
{
if (allComponents.contains(lifeCycle))
{
addLast(new RequestLifeCycle(null, Collections.<ComponentRequestLifecycle> emptyList()));
}
else
{
RequestLifeCycle requestLF = new RequestLifeCycle(null, Collections.singletonList(lifeCycle));
allComponents.add(lifeCycle);
addLast(requestLF);
requestLF.doBegin();
}
}
void begin(ExoContainer container, boolean local)
{
// Need to make a copy as modifying the list is cached by the container
List<ComponentRequestLifecycle> components =
new ArrayList<ComponentRequestLifecycle>((List<ComponentRequestLifecycle>) container
.getComponentInstancesOfType(ComponentRequestLifecycle.class));
//
if (!local)
{
for (ExoContainer current = container.getParent(); current != null; current = current.getParent())
{
components.addAll((List<ComponentRequestLifecycle>) current
.getComponentInstancesOfType(ComponentRequestLifecycle.class));
}
}
// Remove components that have already started their life cycle
components.removeAll(allComponents);
// Contribute to the all component set
allComponents.addAll(components);
//
RequestLifeCycle lifeCycle = new RequestLifeCycle(container, components);
//
addLast(lifeCycle);
//
lifeCycle.doBegin();
}
Map<Object, Throwable> end()
{
RequestLifeCycle lifeCycle = removeLast();
//
IdentityHashMap<Object, Throwable> result = lifeCycle.doEnd();
//
allComponents.removeAll(result.keySet());
//
return result;
}
}