/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library 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 library 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.
*/
package com.liferay.mail.util;
import com.liferay.mail.kernel.util.Hook;
import com.liferay.registry.Registry;
import com.liferay.registry.RegistryUtil;
import com.liferay.registry.ServiceTracker;
/**
* @author Brian Wing Shun Chan
* @author Shuyang Zhou
* @author Peter Fellwock
*/
public class HookFactory {
public static Hook getInstance() {
return _instance._serviceTracker.getService();
}
private HookFactory() {
Registry registry = RegistryUtil.getRegistry();
_serviceTracker = registry.trackServices(Hook.class);
_serviceTracker.open();
}
private static final HookFactory _instance = new HookFactory();
private final ServiceTracker<Hook, Hook> _serviceTracker;
}