/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, 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.jboss.aspects.versioned;
import org.jboss.aop.Advised;
import org.jboss.aop.proxy.ClassProxy;
import org.jboss.aop.proxy.ClassProxyFactory;
import org.jboss.aop.util.PayloadKey;
/**
* This interceptor handles chooses an object to invoke
* on based on the transaction
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 80997 $
*/
public class Versioned
{
public static final String VERSIONED = "VERSIONED";
public static final String VERSIONED_OBJECT = "VERSIONED_OBJECT";
public static final String READONLY = "read-only";
public static Object makeVersioned(Object target)
throws Exception
{
if (target instanceof ClassProxy) throw new IllegalStateException("A ClassProxy is not allowed to be Versioned. You must have a concrete object");
ClassProxy proxy = ClassProxyFactory.newInstance(target.getClass());
VersionedObject versioned = new VersionedObject(target);
proxy._getInstanceAdvisor().getMetaData().addMetaData(VERSIONED, VERSIONED_OBJECT, versioned, PayloadKey.TRANSIENT);
proxy._getInstanceAdvisor().appendInterceptor(VersionedObjectInterceptorFactory.getInstance());
proxy._getInstanceAdvisor().appendInterceptor(new VersionedObjectForwardingInterceptor());
return proxy;
}
static DistributedVersionManager localManager = null;
public static synchronized DistributedVersionManager getLocalVersionManager() throws Exception
{
if (localManager == null)
{
LocalSynchronizationManager synchManager = new LocalSynchronizationManager(null);
localManager = new DistributedVersionManager(1000, synchManager);
synchManager.versionManager = localManager;
}
return localManager;
}
public static void makePerFieldVersioned(Object target) throws Exception
{
if (!(target instanceof Advised)) throw new IllegalArgumentException("Cannot do per field versioning with a non-Advised object");
Advised advised = (Advised)target;
getLocalVersionManager().makeVersioned(advised);
}
}