package org.apache.ojb.odmg.locking;
/* Copyright 2002-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import org.apache.ojb.broker.PersistenceBrokerFactory;
import org.apache.ojb.broker.util.configuration.Configurator;
public class LockMapFactory
{
private static LockMap LOCKMAP = null;
/**
* get a lockManager instance. The implementation class is
* configured in the OJB properties file.
*/
public synchronized static LockMap getLockMap()
{
if (LOCKMAP == null)
{
LOCKMAP = createNewLockMap();
}
return LOCKMAP;
}
private static LockMap createNewLockMap()
{
try
{
Configurator configurator = PersistenceBrokerFactory.getConfigurator();
LockingConfiguration config = (LockingConfiguration) configurator.getConfigurationFor(null);
Class clazz = config.getLockMapClass();
LockMap map = (LockMap) clazz.newInstance();
configurator.configure(map);
return map;
}
catch (Exception e)
{
return new InMemoryLockMapImpl();
}
}
}