Examples of javax.transaction.UserTransaction.rollback()

javax.transaction.UserTransaction.rollback()
Rolls the transaction back

     */
    @Test
    public void testEmptyTxRollback() throws Exception {
        final UserTransaction userTransaction = EJBClient.getUserTransaction(nodeName);
        userTransaction.begin();
        userTransaction.rollback();
    }


    /**
     * Create and setup the EJB client context backed by the remoting receiver
     *

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        // create a batch
        userTransaction.begin();
        try {
            batchBean.createBatch(batchName);
        } catch (Exception e) {
            userTransaction.rollback();
            throw e;
        }
        userTransaction.commit();


        // add step1 to the batch

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        final String step1 = "Simple step1";
        userTransaction.begin();
        try {
            batchBean.step1(batchName, step1);
        } catch (Exception e) {
            userTransaction.rollback();
            throw e;
        }
        userTransaction.commit();


        String successFullyCompletedSteps = step1;

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        try {
            batchBean.appExceptionFailingStep2(batchName, appExceptionStep2);
            Assert.fail("Expected a application exception");
        } catch (SimpleAppException sae) {
            // expected
            userTransaction.rollback();
        }


        final Batch batchAfterAppExceptionStep2 = batchRetriever.fetchBatch(batchName);
        Assert.assertNotNull("Batch after app exception step2 was null", batchAfterAppExceptionStep2);
        Assert.assertEquals("Unexpected steps in batch, after app exception step2", successFullyCompletedSteps, batchAfterAppExceptionStep2.getStepNames());

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        final String step2 = "Simple Step 2";
        userTransaction.begin();
        try {
            batchBean.successfulStep2(batchName, step2);
        } catch (Exception e) {
            userTransaction.rollback();
            throw e;
        }
        // don't yet commit and try and retrieve the batch
        final Batch batchAfterStep2BeforeCommit = batchRetriever.fetchBatch(batchName);
        Assert.assertNotNull("Batch after step2, before commit was null", batchAfterStep2BeforeCommit);

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        // client side tx doesn't play a role)
        final String step3 = "Simple Step 3";
        userTransaction.begin();
        batchBean.independentStep3(batchName, step3);
        // rollback (but it shouldn't end up rolling back step3 because that was done in server side independent tx)
        userTransaction.rollback();
        // keep track of successfully completely steps
        successFullyCompletedSteps = successFullyCompletedSteps + "," + step3;


        // now retrieve and check the batch
        final Batch batchAfterStep3 = batchRetriever.fetchBatch(batchName);

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            // TODO: We currently don't return the tx status from the server to the client, so the
            // client has no knowledge of the tx status. This is something that can be implemented
            // by passing along the tx status as a return attachment from a remote method invocation.
            // For now, let's ignore it
            //Assert.assertEquals("Unexpected transaction state", Status.STATUS_ROLLEDBACK, userTransaction.getStatus());
            userTransaction.rollback();
        }


        // now retrieve and check the batch
        final Batch batchAfterSysException = batchRetriever.fetchBatch(batchName);
        Assert.assertNotNull("Batch after system exception was null", batchAfterSysException);

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      ensureTREBehaviour(false, managedEm, "refresh", new Object(), LockModeType.NONE);
      ensureTREBehaviour(false, managedEm, "refresh", new Object(), LockModeType.NONE, new HashMap());
      ensureTREBehaviour(false, managedEm, "setProperty", "hi", new Object());
      ensureTREBehaviour(false, managedEm, "unwrap", Object.class);
    } finally {
      ut.rollback();
    }
  }
  
  @Test
  public void testNonTxEmIsCleared() throws Exception {

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        } catch (ItemNotFoundException e) {
            fail("New node not visible after save()");
        }


        // rollback
        utx.rollback();


        // assertion: node does not exist in this session
        try {
            superuser.getNodeByUUID(uuid);
            fail("Node still visible after rollback()");

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        // assertion: property exists in this session
        assertTrue(testRootNode.hasProperty(propertyName1));


        // rollback
        utx.rollback();


        // assertion: property does not exist in this session
        assertFalse(testRootNode.hasProperty(propertyName1));
    }

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