/*
* 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: ModifierFactory.java 2342 2006-03-30 13:06:17Z $
*/
package com.arjuna.ats.internal.jdbc.drivers.modifiers;
import java.util.Enumeration;
import java.util.Hashtable;
import com.arjuna.common.internal.util.ClassloadingUtility;
/**
* Keep track of any "modifiers" we may require to run
* transactions over specific databases.
* A modifier implementation has two interfaces, one for XA processing
* and is used by the JTA layer, and one for connection processing and
* is used by the JDBC layer. A user needs to know which interface they
* require and cast appropriately.
*
* @author Mark Little (mark@arjuna.com)
* @version $Id: ModifierFactory.java 2342 2006-03-30 13:06:17Z $
* @since JTS 2.0.
*/
public class ModifierFactory
{
public static synchronized void putModifier (String dbName, int major, int minor, String modclass)
{
ConnectionModifier connectionModifier = ClassloadingUtility.loadAndInstantiateClass(ConnectionModifier.class, modclass, null);
if(connectionModifier != null) {
_modifiers.put(dbName+"_"+major+"_"+minor, connectionModifier);
}
}
/*
* Convert input to lower case first.
*/
public static synchronized ConnectionModifier getModifier (String dbName, int major, int minor)
{
String exactMatch = null;
String majorMatch = null;
String driverMatch = null;
Enumeration e = _modifiers.keys();
dbName = dbName.toLowerCase();
while (e.hasMoreElements())
{
String s = (String) e.nextElement();
if (s.equalsIgnoreCase(dbName + "_" + major + "_" + minor))
exactMatch = s;
if (s.equalsIgnoreCase(dbName + "_" + major + "_-1"))
majorMatch = s;
if (s.equalsIgnoreCase(dbName + "_-1_-1"))
driverMatch = s;
}
if (exactMatch != null)
return _modifiers.get(exactMatch);
if (majorMatch != null)
return _modifiers.get(majorMatch);
if (driverMatch != null)
return _modifiers.get(driverMatch);
return null;
}
private static Hashtable<String,ConnectionModifier> _modifiers = new Hashtable<String,ConnectionModifier>();
static
{
new list();
}
}