TestTransactionalInvokerHelper.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2013, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This 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 software 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package com.hp.mwtests.ts.jta.cdi.transactional;

import javax.ejb.TransactionManagementType;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
import javax.transaction.NotSupportedException;
import javax.transaction.SystemException;
import javax.transaction.Transactional.TxType;
import javax.transaction.UserTransaction;

/**
 * @author <a href="mailto:Tomasz%20Krakowiak%20%3ctomasz.krakowiak@efish.pl%3c">Tomasz Krakowiak
 *         <tomasz.krakowiak@efish.pl></a>
 */
@ApplicationScoped
public class TestTransactionalInvokerHelper {

	@Inject
	private UserTransaction userTransaction;

	@Inject
	private TestTransactionalInvokerBean bean;

	public Runnable runWithTransactionManagement(TransactionManagementType transactionManagementType, boolean startTransaction, Runnable runnable) {
		switch (transactionManagementType) {
			case CONTAINER:
				if (startTransaction) {
					return new RunInTxRequired(runnable);
				} else {
					return new RunInTxSupports(runnable);
				}
			case BEAN:
				if (startTransaction) {
					return new RunInTxNotSupported(new RunInBmtTransaction(runnable));
				} else {
					return new RunInTxNotSupported(runnable);
				}
			default:
				throw new RuntimeException("Unexpected transaction management type " + transactionManagementType);
		}
	}

	public Runnable runInTxType(TxType txType, Runnable runnable) {
		switch (txType) {
			case REQUIRED:
				return new RunInTxRequired(runnable);
			case REQUIRES_NEW:
				return new RunInTxRequiresNew(runnable);
			case MANDATORY:
				return new RunInTxMandatory(runnable);
			case NOT_SUPPORTED:
				return new RunInTxNotSupported(runnable);
			case SUPPORTS:
				return new RunInTxSupports(runnable);
			case NEVER:
				return new RunInTxNever(runnable);
			default:
				throw new RuntimeException("Unexpected tx type " + txType);
		}
	}

	public Runnable runAndCheckUserTransactionAvailability(Runnable runnable, boolean expectedAvailable) {
		return new RunAndCheckUserTransactionAvailability(runnable, expectedAvailable);
	}

	private class RunAndCheckUserTransactionAvailability implements Runnable {
		Runnable runnable;
		boolean expectedAvailable;

		public RunAndCheckUserTransactionAvailability(Runnable runnable, boolean expectedAvailable) {
			this.runnable = runnable;
			this.expectedAvailable = expectedAvailable;
		}

		@Override
		public void run() {
			runnable.run();
			try {
				userTransaction.getStatus();
				if (!expectedAvailable) {
					throw new AssertionError("Expected user transaction to be not available.");
				}
			} catch (IllegalStateException e) {
				if (expectedAvailable) {
					throw new AssertionError("Expected user transaction to be available.");
				}
			} catch (SystemException e) {
				throw new RuntimeException(e);
			}
		}
	}

	private class RunInTxRequired implements Runnable {
		Runnable runnable;

		public RunInTxRequired(Runnable runnable) {
			this.runnable = runnable;
		}

		@Override
		public void run() {
			bean.invokeInTxRequired(runnable);
		}
	}


	private class RunInTxRequiresNew implements Runnable {
		Runnable runnable;

		public RunInTxRequiresNew(Runnable runnable) {
			this.runnable = runnable;
		}

		@Override
		public void run() {
			bean.invokeInTxRequiresNew(runnable);
		}
	}


	private class RunInTxMandatory implements Runnable {
		Runnable runnable;

		public RunInTxMandatory(Runnable runnable) {
			this.runnable = runnable;
		}

		@Override
		public void run() {
			bean.invokeInTxMandatory(runnable);
		}
	}

	private class RunInTxNotSupported implements Runnable {
		Runnable runnable;

		public RunInTxNotSupported(Runnable runnable) {
			this.runnable = runnable;
		}

		@Override
		public void run() {
			bean.invokeInTxNotSupported(runnable);
		}
	}

	private class RunInTxSupports implements Runnable {
		Runnable runnable;

		public RunInTxSupports(Runnable runnable) {
			this.runnable = runnable;
		}

		@Override
		public void run() {
			bean.invokeInTxSupports(runnable);
		}
	}

	private class RunInTxNever implements Runnable {
		Runnable runnable;

		public RunInTxNever(Runnable runnable) {
			this.runnable = runnable;
		}

		@Override
		public void run() {
			bean.invokeInTxNever(runnable);
		}
	}

	private class RunInBmtTransaction implements Runnable {
		Runnable runnable;

		public RunInBmtTransaction(Runnable runnable) {
			this.runnable = runnable;
		}


		@Override
		public void run() {
			try {
				userTransaction.begin();
				try {
					runnable.run();
				} catch (RuntimeException e) {
					try {
						userTransaction.rollback();
					} catch (Throwable e1) {
						e.addSuppressed(e1);
					}
				}
			} catch (NotSupportedException | SystemException e) {
				throw new RuntimeException(e);
			}
		}
	}
}