Package org.jboss.cache.transaction

Source Code of org.jboss.cache.transaction.DummyTransactionManager

/*
* JBoss, Home of Professional Open Source.
* Copyright 2000 - 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.cache.transaction;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.util.Properties;

/**
* Simple transaction manager implementation that maintains transaction state
* in memory only.
*
* @author bela
* @version $Revision: 6905 $
*          Date: May 15, 2003
*          Time: 4:11:37 PM
*/
public class DummyTransactionManager extends DummyBaseTransactionManager
{
   protected static DummyTransactionManager instance = null;
   protected static DummyUserTransaction utx = null;

   protected static Log log = LogFactory.getLog(DummyTransactionManager.class);

   private static final long serialVersionUID = 4396695354693176535L;

   public static synchronized DummyTransactionManager getInstance()
   {     
      if (instance == null)
      {
         instance = new DummyTransactionManager();
         utx = new DummyUserTransaction(instance);
         try
         {
            Properties p = new Properties();
            p.put(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.cache.transaction.DummyContextFactory");
            Context ctx = new InitialContext(p);
            ctx.bind("java:/TransactionManager", instance);
            ctx.bind("UserTransaction", utx);
         }
         catch (NamingException e)
         {
            log.error("binding of DummyTransactionManager failed", e);
         }
      }
      return instance;
   }

   public static DummyUserTransaction getUserTransaction()
   {
      getInstance();
      return utx;
   }

   public static synchronized void destroy()
   {
      if (instance == null)
         return;
      try
      {
         System.out.println("Destroy called on DummyTransactionManager. !!!!!!!!!!!!!!!!!!!!!!");
         Thread.dumpStack();
        
         Properties p = new Properties();
         p.put(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.cache.transaction.DummyContextFactory");
         Context ctx = new InitialContext(p);
         ctx.unbind("java:/TransactionManager");
         ctx.unbind("UserTransaction");
      }
      catch (NamingException e)
      {
         log.error("unbinding of DummyTransactionManager failed", e);
      }
      instance.setTransaction(null);
      instance = null;
   }

}
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