/*
 * 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.test.jca.ejb;

import java.sql.Connection;

import javax.naming.InitialContext;
import javax.sql.DataSource;

/**
 * Thread Local Database
 *
 * @author <a href="mailto:adrian@jboss.org">Adrian Brock</a>
 * @version <tt>$Revision: 81036 $</tt>
 */
public class ThreadLocalDB
{
   private static ThreadLocal tl = new ThreadLocal();

   public static Connection open()
      throws Exception
   {
      Connection c = getConnection();
      if (c == null)
      {
         InitialContext ctx = new InitialContext();
         DataSource ds = (DataSource) ctx.lookup("java:/DefaultDS");
         ctx.close();
         c = ds.getConnection();
         tl.set(c);
      }
      return c;
   }

   public static void close()
   {
      Connection c = getConnection();
      tl.set(null);
      if (c != null)
      {
         try
         {
            c.close();
         }
         catch (Exception ignored)
         {
         }
      }
   }

   private static Connection getConnection()
   {
      return (Connection) tl.get();
   }
}