I am trying out a scenario where I have a persistence.xml file with two
units defined, one
JTA and the other local. When I run this under J2SE I get an exception.
Removing
the JTA unit appears to resolve the problem.
Please see
http://forums.java.net/jive/thread.jspa?threadID=12878&tstart=15 for
more details.
From a user perspective, a key selling point of EJB 3.0 Persistence is
that it is
meant to work both inside and outside the container. I would certainly
like to
see that the implementation works as seamlessly as possible across all
environments.
Regards
Dibyendu
Mike Keith wrote:
> Right. Using JTA in an SE environment is value add that can be
> supported and that we in fact intend to continue to support. It is
> beyond the spec, but not disallowed.
>
>
>> -----Original Message-----
>> From: Tom Ware [mailto:tom.ware_at_oracle.com]
>> Sent: Thursday, February 09, 2006 10:58 AM
>> To: persistence_at_glassfish.dev.java.net
>> Cc: Mike Keith; Linda DeMichiel
>> Subject: Re: persistence.xml in Java SE environment
>>
>>
>> As I understand things, there is nothing in the specification
>> that says
>> providers cannot support JTA outside a container. In fact, in our
>> original EJB 3.0 preview, we provided a test container that provided a
>> very basic JTA implementation so people could test their application
>> without actually being in a container. Although this test
>> container has
>> not been kept up to date, I would not be surprised if eventually
>> customers wanted this kind of functionality.
>>
>> -Tom
>>
>> Marina Vatkina wrote:
>>
>>
>>> Tom, Michael,
>>>
>>> Shouldn't this element be ignored in Java SE (along with
>>>
>> ...-datasourse
>>
>>> ones) if the provider uses properties for the resource
>>>
>> settings? There
>>
>>> is no value in specifying RESOURCE_LOCAL in this case.
>>>
>>> Mike, Linda, what do you think?
>>>
>>> thanks,
>>> -marina
>>>
>>> Tom Ware wrote:
>>>
>>>
>>>
>>>> Michael and Marina,
>>>>
>>>> Michael is right. Java SE examples should be updated to use
>>>> RESOURCE_LOCAL.
>>>>
>>>> -Tom
>>>>
>>>> Michael Bouschen wrote:
>>>>
>>>>
>>>>
>>>>
>>>>> Hi Marina,
>>>>>
>>>>> the <persistence-unit> element in the persistence.xml file has an
>>>>> attribute transaction-type which defaults to JTA. I think
>>>>>
>> this default
>>
>>>>> is not useful in a Java SE environment, so the persistence.xml file
>>>>> should explicitly set the attribute to RESOURCE_LOCAL in this case.
>>>>>
>>>>> We should update the persistence.xml in the Java SE
>>>>>
>> available on the
>>
>>>>> glassfish "Persistence Example" page. What do you think?
>>>>>
>>>>> Regards Michael
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>> --
>> Tom Ware
>> Principal Software Engineer
>> Oracle Canada Inc.
>>
>> Direct: (613) 783-4598
>> Email: tom.ware_at_oracle.com
>>
>>
>>
>>
>
>
>
>