org.jboss.arquillian.transaction.jta.provider.JtaTransactionProvider Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of arquillian-transaction-jta Show documentation
JTA implementation for transaction extension
There is a newer version: 2.0.0
Show newest version
/*
 * JBoss, Home of Professional Open Source
 * Copyright 2012, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed 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.
 */

package org.jboss.arquillian.transaction.jta.provider;

import org.jboss.arquillian.core.api.Instance;
import org.jboss.arquillian.core.api.InstanceProducer;
import org.jboss.arquillian.core.api.annotation.Inject;
import org.jboss.arquillian.transaction.spi.annotation.TransactionScope;
import org.jboss.arquillian.transaction.spi.provider.TransactionProvider;
import org.jboss.arquillian.transaction.spi.test.TransactionalTest;

import javax.naming.Context;
import javax.naming.NamingException;
import javax.transaction.Status;
import javax.transaction.SystemException;
import javax.transaction.UserTransaction;

public class JtaTransactionProvider implements TransactionProvider
{

   private static final String DEFAULT_TRANSACTION_JNDI_NAME = "java:comp/UserTransaction";

   @Inject
   private Instance jndiContextInstance;

   @Inject
   @TransactionScope
   private InstanceProducer userTransactionInstance;

   /**
    * {@inheritDoc}
    */
   @Override
   public void beginTransaction(TransactionalTest transactionalTest)
   {
      try
      {
         final UserTransaction transaction = getUserTransaction(transactionalTest);
         userTransactionInstance.set(transaction);
         if (isTransactionNotActive(transaction))
         {
            transaction.begin();
         }
      }
      catch (Exception e)
      {
         throw new RuntimeException("Unable to start transaction", e);
      }
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public void commitTransaction(TransactionalTest transactionalTest)
   {
      try
      {
         final UserTransaction transaction = userTransactionInstance.get();
         if (isTransactionMarkedToRollback(transaction))
         {
            transaction.rollback();
         }
         else
         {
            transaction.commit();
         }
      }
      catch (Exception e)
      {
         throw new RuntimeException("Unable to commit the transaction.", e);
      }
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public void rollbackTransaction(TransactionalTest transactionalTest)
   {
      try
      {
         final UserTransaction userTransaction = userTransactionInstance.get();

         if (userTransaction != null)
         {
            userTransaction.rollback();
         }
      }
      catch (Exception e)
      {
         throw new RuntimeException("Could not rollback the transaction.", e);
      }
   }

   /**
    * Retrieves the {@link UserTransaction} from JNDI context.
    *
    * @param transactionalTest the transaction test
    * @return the {@link UserTransaction}
    */
   private UserTransaction getUserTransaction(TransactionalTest transactionalTest)
   {

      final String jndiName = getJtaTransactionJndiName(transactionalTest);

      try
      {
         final Context context = jndiContextInstance.get();

         if (context == null)
         {
            throw new RuntimeException("No Naming Context available.");
         }

         return (UserTransaction) context.lookup(jndiName);
      }
      catch (NamingException e)
      {

         throw new RuntimeException("Failed obtaining transaction using [" + jndiName + "]. Is it registered under this name in your container?", e);
      }
   }

   private String getJtaTransactionJndiName(TransactionalTest transactionalTest)
   {
      if (transactionalTest.getManager() != null)
      {
         return transactionalTest.getManager();
      }

      return DEFAULT_TRANSACTION_JNDI_NAME;
   }

   private boolean isTransactionNotActive(final UserTransaction transaction) throws SystemException
   {
      return Status.STATUS_NO_TRANSACTION == transaction.getStatus();
   }

   private boolean isTransactionMarkedToRollback(final UserTransaction transaction) throws SystemException
   {
      return Status.STATUS_MARKED_ROLLBACK == transaction.getStatus();
   }
}