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[eclipselink-dev] Test EntityManagerJUnitTestSuite.testSetRollbackOnly on NetWeaver: Problem with JTA/non-JTA data sources

Hi all,
when running on the NetWeaver server, the test EntityManagerJUnitTestSuite.testSetRollbackOnly fails with the following assertion error:
junit.framework.AssertionFailedError: eName was 'testRefreshRemoved' but expected '1259661366483'
        at junit.framework.Assert.assertTrue(
        at org.eclipse.persistence.testing.tests.jpa.advanced.EntityManagerJUnitTestSuite.testSetRollbackOnly(
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(
        at java.lang.reflect.Method.invoke(
        at junit.framework.TestCase.runTest(
        at junit.framework.TestCase.runBare(
        at org.eclipse.persistence.testing.framework.junit.JUnitTestCase.runBareServer(
        at org.eclipse.persistence.testing.framework.server.TestRunnerBean.runTest(
What the test basically does is that it executes the following steps inside a single JTA transaction:
  1. update some test data and flush the changes to the database
  2. provoke an OptimisticLockException so that the current transaction is marked for rollback
  3. read the test data updated in step 1) and assert that the changes are there
Step 3) fails on NetWeaver – the query can still be executed but it returns the unmodified (i.e. committed) data.
I did some debugging and found out that step 1) uses the data source from PersistenceUnitInfo. getJtaDataSource(), while in step 3) the data source is obtained from PersistenceUnitInfo. getNonJtaDataSource(). Thus we ended up with two different connections, and as transaction isolation TRANSACTION_READ_COMMITTED is used we don’t see the uncommitted changes from the flush operation before.
It seems wrong to me that EclipseLink uses the non-JTA data source in that situation, but I’m unable to decide whether it is a general problem or rather caused by some peculiarity of our server. What happens on different application servers?
Best regards,
Sabine Heider

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