/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.server.webbeans;
import java.lang.annotation.Annotation;
import javax.enterprise.context.ContextNotActiveException;
import javax.enterprise.context.spi.Contextual;
import javax.enterprise.context.spi.CreationalContext;
import javax.transaction.Synchronization;
import com.caucho.inject.TransactionScoped;
import com.caucho.config.scope.AbstractScopeContext;
import com.caucho.config.scope.ContextContainer;
import com.caucho.inject.Module;
import com.caucho.transaction.TransactionImpl;
import com.caucho.transaction.TransactionManagerImpl;
import com.caucho.util.L10N;
/**
* Scope based on the current transaction.
*/
@Module
public class TransactionScope extends AbstractScopeContext
{
private static final L10N L = new L10N(TransactionScope.class);
private TransactionManagerImpl _xaManager;
public TransactionScope()
{
_xaManager = TransactionManagerImpl.getInstance();
}
/**
* Returns true if the scope is currently active.
*/
@Override
public boolean isActive()
{
return _xaManager.getTransaction() != null;
}
/**
* Returns the scope annotation type.
*/
@Override
public Class<? extends Annotation> getScope()
{
return TransactionScoped.class;
}
@Override
protected ContextContainer getContextContainer()
{
TransactionImpl xa = _xaManager.getCurrent();
if (xa == null || ! xa.isActive()) {
return null;
}
return (ContextContainer) xa.getResource("caucho.xa.scope");
}
@Override
protected ContextContainer createContextContainer()
{
TransactionImpl xa = _xaManager.getCurrent();
if (xa == null || ! xa.isActive()) {
return null;
}
XAContextContainer context
= (XAContextContainer) xa.getResource("caucho.xa.scope");
if (context == null) {
context = new XAContextContainer();
xa.setAttribute("caucho.xa.scope", context);
xa.registerSynchronization(context);
}
return context;
}
@Override
public <T> T get(Contextual<T> bean,
CreationalContext<T> creationalContext)
{
TransactionImpl xa = _xaManager.getCurrent();
if (xa == null || ! xa.isActive()) {
throw new ContextNotActiveException(L.l("'{0}' cannot be created because @TransactionScoped requires an active transaction.",
bean));
}
ScopeContext cxt = (ScopeContext) xa.getResource("caucho.xa.scope");
if (cxt == null) {
cxt = new ScopeContext();
xa.putResource("caucho.xa.scope", cxt);
xa.registerSynchronization(cxt);
}
T result = cxt.get(bean);
if (result != null || creationalContext == null)
return (T) result;
result = bean.create(creationalContext);
String id = null;
cxt.put(bean, id, result, creationalContext);
return (T) result;
}
/*
public void addDestructor(Bean comp, Object value)
{
ServletRequest request = ServletInvocation.getContextRequest();
if (request != null) {
DestructionListener listener
= (DestructionListener) request.getAttribute("caucho.destroy");
if (listener == null) {
listener = new DestructionListener();
request.setAttribute("caucho.destroy", listener);
}
// XXX:
listener.addValue(comp, value);
}
}
*/
@SuppressWarnings("serial")
static class ScopeContext extends ContextContainer
implements Synchronization {
@Override
public void beforeCompletion()
{
}
@Override
public void afterCompletion(int status)
{
close();
}
}
}