/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, 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.jca.core.tx.noopts;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.transaction.Status;
import javax.transaction.Synchronization;
import javax.transaction.TransactionSynchronizationRegistry;
/**
* A transaction synchronization registry implementation
* @author <a href="mailto:jesper.pedersen@jboss.org">Jesper Pedersen</a>
*/
public class TransactionSynchronizationRegistryImpl implements TransactionSynchronizationRegistry, Serializable
{
private static final long serialVersionUID = 2L;
private static final String JNDI_NAME = "java:/TransactionSynchronizationRegistry";
private transient TxRegistry registry;
private transient ConcurrentMap<Long, TxEnv> txe;
/**
* Constructor
*/
public TransactionSynchronizationRegistryImpl()
{
this.registry = null;
this.txe = new ConcurrentHashMap<Long, TxEnv>();
}
/**
* Set the registry
* @param v The value
*/
public void setRegistry(TxRegistry v)
{
registry = v;
}
/**
* {@inheritDoc}
*/
public Object getTransactionKey()
{
return getKey();
}
/**
* {@inheritDoc}
*/
public void putResource(Object key, Object value)
{
TxEnv env = getTxEnv();
env.getEnvironment().put(key, value);
}
/**
* {@inheritDoc}
*/
public Object getResource(Object key)
{
TxEnv env = getTxEnv();
return env.getEnvironment().get(key);
}
/**
* {@inheritDoc}
*/
public void registerInterposedSynchronization(Synchronization sync)
{
TransactionImpl tx = registry.getTransaction();
if (tx == null)
throw new IllegalStateException();
try
{
tx.registerSynchronization(sync);
}
catch (Throwable t)
{
// Nothing to do
}
}
/**
* {@inheritDoc}
*/
public int getTransactionStatus()
{
TransactionImpl tx = registry.getTransaction();
if (tx == null)
return Status.STATUS_NO_TRANSACTION;
try
{
return tx.getStatus();
}
catch (Throwable t)
{
return Status.STATUS_UNKNOWN;
}
}
/**
* {@inheritDoc}
*/
public void setRollbackOnly()
{
TransactionImpl tx = registry.getTransaction();
if (tx == null)
throw new IllegalStateException();
try
{
tx.setRollbackOnly();
}
catch (Throwable t)
{
// Nothing to do
}
}
/**
* {@inheritDoc}
*/
public boolean getRollbackOnly()
{
TransactionImpl tx = registry.getTransaction();
if (tx == null)
throw new IllegalStateException();
return tx.getRollbackOnly();
}
/**
* Start
* @exception Throwable Thrown if an error occurs
*/
public void start() throws Throwable
{
Context context = new InitialContext();
context.bind(JNDI_NAME, this);
context.close();
}
/**
* Stop
* @exception Throwable Thrown if an error occurs
*/
public void stop() throws Throwable
{
Context context = new InitialContext();
context.unbind(JNDI_NAME);
context.close();
}
/**
* Get the key
* @return The value
*/
private Long getKey()
{
return Long.valueOf(Thread.currentThread().getId());
}
/**
* Get the TxEnv
* @return The value
*/
private TxEnv getTxEnv()
{
Long key = getKey();
TxEnv env = txe.get(key);
if (env == null)
{
TxEnv newTxEnv = new TxEnv();
env = txe.putIfAbsent(key, newTxEnv);
if (env == null)
{
env = newTxEnv;
}
}
return env;
}
/**
* Transaction environment
*/
static class TxEnv
{
private static final long serialVersionUID = 1L;
private Map<Object, Object> envs;
/**
* Constructor
*/
TxEnv()
{
this.envs = new HashMap<Object, Object>(1);
}
/**
* Get the environment
* @return The value
*/
Map<Object, Object> getEnvironment()
{
return envs;
}
}
}