BaseTransactionalMVCActionCommand.java

/**
 * 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.portlet.bridges.mvc;

import com.liferay.portal.kernel.servlet.SessionErrors;
import com.liferay.portal.kernel.transaction.Propagation;
import com.liferay.portal.kernel.transaction.TransactionConfig;
import com.liferay.portal.kernel.transaction.TransactionInvokerUtil;

import java.util.concurrent.Callable;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletException;

/**
 * @author Bruno Basto
 */
public abstract class BaseTransactionalMVCActionCommand
	implements MVCActionCommand {

	@Override
	public boolean processAction(
			final ActionRequest actionRequest,
			final ActionResponse actionResponse)
		throws PortletException {

		try {
			Callable<Boolean> callable = new Callable<Boolean>() {

				@Override
				public Boolean call() throws Exception {
					doTransactionalCommand(actionRequest, actionResponse);

					return SessionErrors.isEmpty(actionRequest);
				}

			};

			return TransactionInvokerUtil.invoke(_transactionConfig, callable);
		}
		catch (Throwable t) {
			if (t instanceof PortletException) {
				throw (PortletException)t;
			}

			throw new PortletException(t);
		}
	}

	protected abstract void doTransactionalCommand(
			ActionRequest actionRequest, ActionResponse actionResponse)
		throws Exception;

	private static final TransactionConfig _transactionConfig;

	static {
		TransactionConfig.Builder builder = new TransactionConfig.Builder();

		builder.setPropagation(Propagation.REQUIRES_NEW);
		builder.setRollbackForClasses(Exception.class);

		_transactionConfig = builder.build();
	}

}