IsSameRMModifier.java

/*
 * 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 in the distribution for a
 * full listing of individual contributors. 
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A 
 * 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,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
 * MA  02110-1301, USA.
 * 
 * (C) 2005-2006,
 * @author JBoss Inc.
 */
/*
 * Copyright (C) 1998, 1999, 2000,
 *
 * Arjuna Solutions Limited,
 * Newcastle upon Tyne,
 * Tyne and Wear,
 * UK.  
 *
 * $Id: oracle_9_0.java 2342 2006-03-30 13:06:17Z  $
 */

package com.arjuna.ats.internal.jdbc.drivers.modifiers;

import java.sql.Connection;
import java.sql.SQLException;

import javax.sql.XAConnection;
import javax.transaction.xa.Xid;

import com.arjuna.ats.jta.exceptions.NotImplementedException;
import com.arjuna.ats.jta.xa.XAModifier;

/*
 * This is a stateless class to allow us to get round
 * problems in Oracle. For example, they can't work with
 * an arbitrary implementation of Xid - it has to be their
 * own implementation!
 */

public class IsSameRMModifier implements XAModifier, ConnectionModifier {

	@Override
	public String initialise(String dbName) {
		return dbName;
	}

	@Override
	public Xid createXid(Xid xid) throws SQLException, NotImplementedException {
		return xid;
	}

	@Override
	public XAConnection getConnection(XAConnection conn) throws SQLException,
			NotImplementedException {
		throw new NotImplementedException(); // NEVER CALLED
	}

	@Override
	public boolean supportsMultipleConnections() throws SQLException,
			NotImplementedException {
		return true; // This ensures connection close is delayed
	}

	@Override
	public void setIsolationLevel(Connection conn, int level)
			throws SQLException, NotImplementedException {
		// Non-modifier path does not call this
	}

	@Override
	public int xaStartParameters(int level) throws SQLException,
			NotImplementedException {
		return level;
	}

	@Override
	public boolean requiresSameRMOverride() {
		return true;
	}
}