Cool! Changing my code to:
-- cut here --
@PersistenceUnit(unitName="JavaLibrary1PU")
private EntityManagerFactory emf;
EntityManager em = emf.createEntityManager();
// em.getTransaction().begin();
Company c = new Company("1", "AAA Co", (float)10.0, (float)2.0,
(float)10.0, "Jun 15, 2007");
em.persist(c);
out.println("Persisting to the source ...");
// em.getTransaction().commit();
out.println("and now committed!");
-- cut here --
got away with that error and my web page now shows
"Persisting to the source ... and now committed!"
But I do not see the Table in the database URL identified in
persistence.xml. What could be wrong ?
-Arun
Marina Vatkina wrote:
> Arun,
>
> The exceptions are right - you can't mix and match the access types. You
> need to either inject an EMF via @PersistenceUnit, and then create an EM
> or use UserTransaction for the transaction boundaries.
>
> regards,
> -marina
>
> Arun Gupta wrote:
>> Ok, I figured out how to set the transaction type (manually edit
>> persistence.xml). But now I'm getting:
>>
>> -- cut here --
>> Exception Description: Cannot use an EntityTransaction while using JTA.
>> at
>> oracle.toplink.essentials.internal.ejb.cmp3.transaction.JTATransactionWrapper.getTransaction(JTATransactionWrapper.java:66)
>>
>> at
>> oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerImpl.getTransaction(EntityManagerImpl.java:340)
>>
>> at
>> com.sun.enterprise.util.EntityManagerWrapper.getTransaction(EntityManagerWrapper.java:1094)
>>
>> -- cut here --
>>
>> Here is my code for a WebApplication:
>> -- cut here --
>> @PersistenceContext(unitName="JavaLibrary1PU")
>> EntityManager em;
>> em.getTransaction();
>> Company c = new Company("1", "AAA Co", (float)10.0,
>> (float)2.0, (float)10.0, "Jun 15, 2007");
>> em.persist(c);
>> out.println("Persisting to the source ...");
>> em.getTransaction().commit();
>> out.println("and now committed!");
>> -- cut here --
>>
>> What is missing ?
>>
>> -Arun
>>
>> Arun Gupta wrote:
>>
>>> Here is a great error message I see when deploying an error:
>>>
>>> -- cut here --
>>> Deploying application in domain failed; Deployment Error -- The
>>> persistence-context-ref-name [sample.NewServlet/em] in module
>>> [C:\Users\Arun Gupta\WebApplication5\build\web] resolves to a
>>> persistence unit called [JavaLibrary1PU] which is of type
>>> RESOURCE_LOCAL. Only persistence units with transaction type JTA can
>>> be used as a container managed entity manager. Please verify your
>>> application.
>>> -- cut here --
>>>
>>> Little detailed but very clearly conveys what is possibly wrong in
>>> the application. Now how do I fix it when generating this PU in NB ?
>>>
>>> -Arun
>>
>>
>
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--
Technology Evangelist
Web Technologies and Standards
Sun Microsystems, Inc.
Blog: http://blogs.sun.com/arungupta