/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, 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.ClassAdvisor;
import org.jboss.aop.InstanceAdvised;
import org.jboss.aop.proxy.ClassProxy;
import org.jboss.aop.proxy.ClassProxyFactory;
import org.jboss.logging.Logger;
import org.jboss.util.id.GUID;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 57186 $
*/
public class DistributedVersionManager extends VersionManager
{
protected static Logger log = Logger.getLogger(DistributedVersionManager.class);
protected SynchronizationManager synchManager;
protected long timeout;
public DistributedVersionManager(long timeout, SynchronizationManager synchManager)
{
this.synchManager = synchManager;
this.timeout = timeout;
}
public boolean isVersioned(Object obj)
{
if (!(obj instanceof InstanceAdvised)) return false;
InstanceAdvised advised = (InstanceAdvised)obj;
return getGUID(advised) != null;
}
public GUID tag(InstanceAdvised advised)
{
GUID guid = new GUID();
org.jboss.aop.metadata.SimpleMetaData metaData = advised._getInstanceAdvisor().getMetaData();
metaData.addMetaData(VERSION_MANAGER, VERSION_ID, guid);
return guid;
}
public void untag(InstanceAdvised advised)
{
org.jboss.aop.metadata.SimpleMetaData metaData = advised._getInstanceAdvisor().getMetaData();
metaData.removeMetaData(VERSION_MANAGER, VERSION_ID);
}
public List makeVersionedList(List list, ArrayList newObjects) throws Exception
{
ClassProxy proxy = ClassProxyFactory.newInstance(list.getClass());
GUID guid = tag(proxy);
DistributedListState manager = new DistributedListState(guid, timeout, proxy, list, this, synchManager);
StateManager.setStateManager(proxy, manager);
CollectionStateChangeInterceptor interceptor = new CollectionStateChangeInterceptor(manager);
proxy._getInstanceAdvisor().appendInterceptor(interceptor);
newObjects.add(manager);
return (List)proxy;
}
public Map makeVersionedMap(Map map, ArrayList newObjects) throws Exception
{
ClassProxy proxy = ClassProxyFactory.newInstance(map.getClass());
GUID guid = tag(proxy);
DistributedMapState manager = new DistributedMapState(guid, timeout, proxy, map, this, synchManager);
StateManager.setStateManager(proxy, manager);
CollectionStateChangeInterceptor interceptor = new CollectionStateChangeInterceptor(manager);
proxy._getInstanceAdvisor().appendInterceptor(interceptor);
newObjects.add(manager);
return (Map)proxy;
}
public Set makeVersionedSet(Set set, ArrayList newObjects) throws Exception
{
ClassProxy proxy = ClassProxyFactory.newInstance(set.getClass());
GUID guid = tag(proxy);
DistributedSetState manager = new DistributedSetState(guid, timeout, proxy, set, this, synchManager);
StateManager.setStateManager(proxy, manager);
CollectionStateChangeInterceptor interceptor = new CollectionStateChangeInterceptor(manager);
proxy._getInstanceAdvisor().appendInterceptor(interceptor);
newObjects.add(manager);
return (Set)proxy;
}
public Object makeVersioned(Object obj)
throws Exception
{
ArrayList newObjects = new ArrayList();
obj = makeVersioned(obj, newObjects);
synchManager.createObjects(newObjects);
return obj;
}
Object makeVersioned(Object obj, ArrayList newObjects)
throws Exception
{
// Proxies cannot be versioned
if (obj instanceof ClassProxy) return obj;
if (!(obj instanceof Advised))
{
if (obj instanceof List)
{
List list = (List)obj;
return makeVersionedList(list, newObjects);
}
else if (obj instanceof Map)
{
Map map = (Map)obj;
return makeVersionedMap(map, newObjects);
}
else if (obj instanceof Set)
{
Set set = (Set)obj;
return makeVersionedSet(set, newObjects);
}
else
{
return obj;
}
}
Advised advised = (Advised)obj;
org.jboss.aop.metadata.SimpleMetaData metaData = advised._getInstanceAdvisor().getMetaData();
GUID guid;
synchronized (metaData)
{
if (isVersioned(advised)) return obj;
guid = tag(advised);
}
System.out.println("VersionManager: " + guid);
DistributedPOJOState manager = new DistributedPOJOState(guid, timeout, advised, this, synchManager);
StateManager.setStateManager(advised, manager);
StateChangeInterceptor interceptor = new StateChangeInterceptor(manager);
manager.acquireWriteLock();
advised._getInstanceAdvisor().appendInterceptor(interceptor);
try
{
Field[] advisedFields = ((ClassAdvisor)advised._getAdvisor()).getAdvisedFields();
for (int i = 0; i < advisedFields.length; i++)
{
Field field = advisedFields[i];
if (Modifier.isStatic(field.getModifiers())) continue;
Object fieldVal = field.get(advised);
if (fieldVal != null)
{
if (fieldVal instanceof Advised)
{
Advised fieldAdvised = (Advised)fieldVal;
makeVersioned(fieldAdvised, newObjects);
fieldVal = new VersionReference(getGUID(fieldAdvised), fieldAdvised);
}
else if (fieldVal instanceof List)
{
List list = (List)fieldVal;
InstanceAdvised instanceAdvised = (InstanceAdvised)makeVersionedList(list, newObjects);
fieldVal = new VersionReference(getGUID(instanceAdvised), instanceAdvised);
}
else if (fieldVal instanceof Map)
{
Map map = (Map)fieldVal;
InstanceAdvised instanceAdvised = (InstanceAdvised)makeVersionedMap(map, newObjects);
fieldVal = new VersionReference(getGUID(instanceAdvised), instanceAdvised);
}
else if (fieldVal instanceof Set)
{
Set set = (Set)fieldVal;
InstanceAdvised instanceAdvised = (InstanceAdvised)makeVersionedSet(set, newObjects);
fieldVal = new VersionReference(getGUID(instanceAdvised), instanceAdvised);
}
}
manager.fieldMap.put(new Integer(i), new DistributedFieldUpdate(fieldVal, 0, i));
}
newObjects.add(manager);
return advised;
}
finally
{
manager.releaseWriteLock();
}
}
/**
* This is used by DistributedState.buildObject when the DistributedState object is
* serialized across the wire and must recreate the object it represents
*/
public void addVersioning(DistributedPOJOState manager, Advised advised)
{
StateManager.setStateManager(advised, manager);
StateChangeInterceptor interceptor = new StateChangeInterceptor(manager);
org.jboss.aop.metadata.SimpleMetaData metaData = advised._getInstanceAdvisor().getMetaData();
metaData.addMetaData(VERSION_MANAGER, VERSION_ID, manager.getGUID());
advised._getInstanceAdvisor().appendInterceptor(interceptor);
}
/**
* This is used by DistributedState.buildObject when the DistributedState object is
* serialized across the wire and must recreate the object it represents
*/
public ClassProxy addListVersioning(List list, DistributedListState manager) throws Exception
{
ClassProxy proxy = ClassProxyFactory.newInstance(list.getClass());
GUID guid = manager.getGUID();
org.jboss.aop.metadata.SimpleMetaData metaData = proxy._getInstanceAdvisor().getMetaData();
metaData.addMetaData(VERSION_MANAGER, VERSION_ID, guid);
StateManager.setStateManager(proxy, manager);
CollectionStateChangeInterceptor interceptor = new CollectionStateChangeInterceptor(manager);
proxy._getInstanceAdvisor().appendInterceptor(interceptor);
return proxy;
}
/**
* This is used by DistributedState.buildObject when the DistributedState object is
* serialized across the wire and must recreate the object it represents
*/
public ClassProxy addMapVersioning(Map map, DistributedMapState manager) throws Exception
{
ClassProxy proxy = ClassProxyFactory.newInstance(map.getClass());
GUID guid = manager.getGUID();
org.jboss.aop.metadata.SimpleMetaData metaData = proxy._getInstanceAdvisor().getMetaData();
metaData.addMetaData(VERSION_MANAGER, VERSION_ID, guid);
StateManager.setStateManager(proxy, manager);
CollectionStateChangeInterceptor interceptor = new CollectionStateChangeInterceptor(manager);
proxy._getInstanceAdvisor().appendInterceptor(interceptor);
return proxy;
}
/**
* This is used by DistributedState.buildObject when the DistributedState object is
* serialized across the wire and must recreate the object it represents
*/
public ClassProxy addSetVersioning(Set set, DistributedSetState manager) throws Exception
{
ClassProxy proxy = ClassProxyFactory.newInstance(set.getClass());
GUID guid = manager.getGUID();
org.jboss.aop.metadata.SimpleMetaData metaData = proxy._getInstanceAdvisor().getMetaData();
metaData.addMetaData(VERSION_MANAGER, VERSION_ID, guid);
StateManager.setStateManager(proxy, manager);
CollectionStateChangeInterceptor interceptor = new CollectionStateChangeInterceptor(manager);
proxy._getInstanceAdvisor().appendInterceptor(interceptor);
return proxy;
}
}
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