package org.apache.fulcrum.yaafi.framework.util;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.avalon.framework.logger.Logger;
import org.apache.fulcrum.yaafi.framework.locking.AvalonLoggerFacade;
/**
* A simple lock manager supporting read locks and write locks. The main
* intention is to shield the application from the implementation details.
*
* @author <a href="mailto:siegfried.goeschl@it20one.at">Siegfried Goeschl</a>
*/
public class ReadWriteLock
{
/** Read/Write lock to synchronize acess to services */
private final org.apache.fulcrum.yaafi.framework.locking.ReadWriteLock lock;
/**
* Constructor
*
* @param name the name of the lock
* @param logger the logger to be used
*/
public ReadWriteLock( String name, Logger logger )
{
this.lock = new org.apache.fulcrum.yaafi.framework.locking.ReadWriteLock(
name,
new AvalonLoggerFacade(logger)
);
}
/**
* @return a read lock
*/
public Object getReadLock(String ownerId)
throws InterruptedException
{
this.lock.acquireRead(ownerId,0);
return this;
}
/**
* @return a write lock
*/
public Object getWriteLock(String ownerId)
throws InterruptedException
{
this.lock.acquireWrite(ownerId,0);
return this;
}
/**
* releases the lock
* @param lock the lock
*/
public void releaseLock(Object lock, String ownerId)
{
this.lock.release(ownerId);
}
}