com.liferay.portal.kernel.transaction.TransactionLifecycleManager Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of com.liferay.portal.kernel Show documentation

Contains interfaces for the portal services. Interfaces are only loaded by the global class loader and are shared by all plugins.

There is a newer version: 156.0.0

Show newest version

/**
 * 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.portal.kernel.transaction;

import com.liferay.portal.kernel.util.ArrayUtil;

import java.util.concurrent.atomic.AtomicReference;

/**
 * @author Shuyang Zhou
 */
public class TransactionLifecycleManager {

	public static void fireTransactionCommittedEvent(
		TransactionAttribute transactionAttribute,
		TransactionStatus transactionStatus) {

		for (TransactionLifecycleListener transactionLifecycleListener :
				_transactionLifecycleListenersReference.get()) {

			transactionLifecycleListener.committed(
				transactionAttribute, transactionStatus);
		}
	}

	public static void fireTransactionCreatedEvent(
		TransactionAttribute transactionAttribute,
		TransactionStatus transactionStatus) {

		for (TransactionLifecycleListener transactionLifecycleListener :
				_transactionLifecycleListenersReference.get()) {

			transactionLifecycleListener.created(
				transactionAttribute, transactionStatus);
		}
	}

	public static void fireTransactionRollbackedEvent(
		TransactionAttribute transactionAttribute,
		TransactionStatus transactionStatus, Throwable throwable) {

		for (TransactionLifecycleListener transactionLifecycleListener :
				_transactionLifecycleListenersReference.get()) {

			transactionLifecycleListener.rollbacked(
				transactionAttribute, transactionStatus, throwable);
		}
	}

	public static TransactionLifecycleListener[]
		getRegisteredTransactionLifecycleListeners() {

		TransactionLifecycleListener[] transactionLifecycleListeners =
			_transactionLifecycleListenersReference.get();

		return transactionLifecycleListeners.clone();
	}

	public static boolean register(
		TransactionLifecycleListener transactionLifecycleListener) {

		while (true) {
			TransactionLifecycleListener[] transactionLifecycleListeners =
				_transactionLifecycleListenersReference.get();

			if (ArrayUtil.contains(
					transactionLifecycleListeners,
					transactionLifecycleListener)) {

				return false;
			}

			TransactionLifecycleListener[] newTransactionLifecycleListeners =
				ArrayUtil.append(
					transactionLifecycleListeners,
					transactionLifecycleListener);

			if (_transactionLifecycleListenersReference.compareAndSet(
					transactionLifecycleListeners,
					newTransactionLifecycleListeners)) {

				return true;
			}
		}
	}

	public static boolean unregister(
		TransactionLifecycleListener transactionLifecycleListener) {

		while (true) {
			TransactionLifecycleListener[] transactionLifecycleListeners =
				_transactionLifecycleListenersReference.get();

			TransactionLifecycleListener[] newTransactionLifecycleListeners =
				ArrayUtil.remove(
					transactionLifecycleListeners,
					transactionLifecycleListener);

			if (transactionLifecycleListeners ==
					newTransactionLifecycleListeners) {

				return false;
			}

			if (_transactionLifecycleListenersReference.compareAndSet(
					transactionLifecycleListeners,
					newTransactionLifecycleListeners)) {

				return true;
			}
		}
	}

	private static final AtomicReference
		_transactionLifecycleListenersReference = new AtomicReference<>(
			new TransactionLifecycleListener[0]);

}