/*
* 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.inject;
import java.lang.annotation.Annotation;
import javax.enterprise.context.RequestScoped;
import com.caucho.config.scope.AbstractScopeContext;
import com.caucho.config.scope.ContextContainer;
import com.caucho.util.L10N;
/**
* Scope based on the current transaction.
*/
@Module
public class RequestContext extends AbstractScopeContext
{
private static final L10N L = new L10N(RequestContext.class);
private static final ThreadLocal<RequestContext> _threadLocal
= new ThreadLocal<RequestContext>();
private ContextContainer _context;
private int _depth;
public RequestContext()
{
}
public static void begin()
{
RequestContext request = _threadLocal.get();
if (request == null) {
request = new RequestContext();
_threadLocal.set(request);
}
request._depth++;
}
public static void end()
{
RequestContext request = _threadLocal.get();
if (request == null)
throw new IllegalStateException(L.l("end() requires a matching begin()"));
if (--request._depth == 0) {
ContextContainer context = request._context;
request._context = null;
if (context != null)
context.close();
}
}
/**
* Returns true if the scope is currently active.
*/
@Override
public boolean isActive()
{
RequestContext request = _threadLocal.get();
return request != null && request._depth > 0;
}
/**
* Returns the scope annotation type.
*/
@Override
public Class<? extends Annotation> getScope()
{
return RequestScoped.class;
}
@Override
protected ContextContainer getContextContainer()
{
RequestContext request = _threadLocal.get();
if (request != null)
return request._context;
else
return null;
}
@Override
protected ContextContainer createContextContainer()
{
RequestContext request = _threadLocal.get();
if (request._context == null) {
request._context = new ContextContainer();
}
return request._context;
}
}