/*
* Copyright (C) 2012 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;
import java.util.ArrayList;
import java.util.List;
import org.exoplatform.container.multitenancy.bridge.TenantsContainerContext;
import org.picocontainer.ComponentAdapter;
import org.picocontainer.PicoContainer;
import org.picocontainer.PicoException;
import org.picocontainer.defaults.ComponentAdapterFactory;
import org.picocontainer.defaults.DuplicateComponentKeyRegistrationException;
/**
* TenantsContainer separate generally used components from ones what should be instantiated,
* started and stopped on per-tenant basis.<br>
* It overrides component getters, {@link #registerComponent(ComponentAdapter)} and
* {@link #unregisterComponent(Object)} methods to get components taking in account Current Tenant
* context.<br>
* The Current Tenant context it's an abstraction what will be set by actual Multitenancy implementation (for
* versions currently in production it's based on JCR Current Repository, but this should be transparent for
* Kernel level and implementation can be changed in future).
*
*
*/
public class TenantsContainer extends CachingContainer
{
private static final long serialVersionUID = 1945046643718969920L;
protected TenantsContainerContext tenantsContainerContext;
public TenantsContainer(ComponentAdapterFactory componentAdapterFactory, PicoContainer parent)
{
super(componentAdapterFactory, parent);
}
public TenantsContainer(PicoContainer parent)
{
super(parent);
}
public TenantsContainer(ComponentAdapterFactory componentAdapterFactory)
{
super(componentAdapterFactory);
}
public TenantsContainer()
{
}
/**
* {@inheritDoc}
*/
@SuppressWarnings({"rawtypes"})
@Override
public ComponentAdapter getComponentAdapterOfType(Class componentType)
{
if (tenantsContainerContext != null && tenantsContainerContext.accept(componentType))
{
return tenantsContainerContext.getComponentAdapterOfType(componentType);
}
return super.getComponentAdapterOfType(componentType);
}
/**
* {@inheritDoc}
*/
@Override
public Object getComponentInstance(Object componentKey) throws PicoException
{
if (tenantsContainerContext != null && tenantsContainerContext.accept(componentKey))
{
return tenantsContainerContext.getComponentInstance(componentKey);
}
return super.getComponentInstance(componentKey);
}
/**
* {@inheritDoc}
*/
@SuppressWarnings({"rawtypes", "unchecked"})
@Override
public List getComponentAdaptersOfType(Class componentType)
{
List result = new ArrayList();
result.addAll(super.getComponentAdaptersOfType(componentType));
if (tenantsContainerContext != null && tenantsContainerContext.accept(componentType))
{
List adapters = tenantsContainerContext.getComponentAdaptersOfType(componentType);
if (adapters != null)
{
result.addAll(adapters);
}
}
return result;
}
/**
* {@inheritDoc}
*/
@SuppressWarnings({"rawtypes", "unchecked"})
@Override
public List getComponentInstancesOfType(Class componentType) throws PicoException
{
// XXX: order of components in the list broken as we taking it from two sources
List result = new ArrayList();
result.addAll(super.getComponentInstancesOfType(componentType));
if (tenantsContainerContext != null && tenantsContainerContext.accept(componentType))
{
List instances = tenantsContainerContext.getComponentInstancesOfType(componentType);
if (instances != null)
{
result.addAll(instances);
}
}
return result;
}
/**
* {@inheritDoc}
*/
@SuppressWarnings({"rawtypes"})
@Override
public Object getComponentInstanceOfType(Class componentType)
{
if (tenantsContainerContext != null && tenantsContainerContext.accept(componentType))
{
return tenantsContainerContext.getComponentInstanceOfType(componentType);
}
return super.getComponentInstanceOfType(componentType);
}
/**
* {@inheritDoc}
*/
@Override
public ComponentAdapter registerComponent(ComponentAdapter componentAdapter)
throws DuplicateComponentKeyRegistrationException
{
if (tenantsContainerContext != null && tenantsContainerContext.accept(componentAdapter))
{
ComponentAdapter contextAdapter = tenantsContainerContext.registerComponent(componentAdapter);
// check if the same adapter returned, if not - register the new in the super also
if (contextAdapter == componentAdapter)
{
return componentAdapter;
}
else
{
return super.registerComponent(contextAdapter);
}
}
else
{
return super.registerComponent(componentAdapter);
}
}
/**
* {@inheritDoc}
*/
@Override
public ComponentAdapter unregisterComponent(Object componentKey)
{
ComponentAdapter adapter = getComponentAdapter(componentKey);
if (tenantsContainerContext != null && tenantsContainerContext.accept(adapter))
{
adapter = tenantsContainerContext.unregisterComponent(componentKey);
if (adapter != null)
{
return adapter;
}
}
return super.unregisterComponent(componentKey);
}
}