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| garonne |
 Posted: Wed Apr 05, 2006 6:39 am Post subject: How XATopicSession work? |
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Acolyte
Joined: 26 Jan 2006
Posts: 59
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| Can anyone explain me how an XATopicSession work? |
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| jefflowrey |
| Posted: Wed Apr 05, 2006 6:44 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Just like a TopicSession, except it's in a globally coordinated unit of work.
So that means that, if your subscriber needs to insert data from the subscription into a database, and the database calls fail... then the Topic message will be rolled back to the subscription queue and can be reprocessed.
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| garonne |
| Posted: Wed Apr 05, 2006 11:11 pm Post subject: |
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Acolyte
Joined: 26 Jan 2006
Posts: 59
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| jefflowrey wrote: |
Just like a TopicSession, except it's in a globally coordinated unit of work.
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So, without global coordination of the transaction manager, can XATopicSession work normally like TopicSession?
For example: we use XATopicSession in a stand-alone Java program without transaction context. |
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| mvic |
| Posted: Thu Apr 06, 2006 12:21 am Post subject: |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| garonne wrote: |
| So, without global coordination of the transaction manager, can XATopicSession work normally like TopicSession? |
The J2EE v1.4 JMS API reference for XATopicSession shows only one function:
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| public TopicSession getTopicSession() throws JMSException |
with the following short description: "Gets the topic session associated with this XATopicSession." So I think the strict answer to your question is no, but really the answer is yes, because you can get a TopicSession from the XATopicSession easily. |
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| garonne |
| Posted: Thu Apr 06, 2006 1:49 am Post subject: |
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Acolyte
Joined: 26 Jan 2006
Posts: 59
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| mvic wrote: |
The J2EE v1.4 JMS API reference for XATopicSession shows only one function:
| Code: |
| public TopicSession getTopicSession() throws JMSException |
with the following short description: "Gets the topic session associated with this XATopicSession." So I think the strict answer to your question is no, but really the answer is yes, because you can get a TopicSession from the XATopicSession easily. |
Thanks for your answer, I was a litle lazy when I did not look up the J2EE API reference  |
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| jefflowrey |
| Posted: Thu Apr 06, 2006 4:31 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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I didn't think that any of the XA classes would instantiate properly as objects in the abscence of a transaction manager?
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| fjb_saper |
| Posted: Thu Apr 06, 2006 2:11 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Why not? As per API you should be able to extract the XAResource from the XASession and then bind it to your TM.
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| jefflowrey |
| Posted: Fri Apr 07, 2006 3:25 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| fjb_saper wrote: |
| Why not? |
Because I've seen errors in WAS startup complaining about not being able to create XA objects when client bindings were in effect.
But that's only vague recollections and I am extremely fuzzy on the details.
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| garonne |
| Posted: Wed Apr 12, 2006 1:33 am Post subject: |
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Acolyte
Joined: 26 Jan 2006
Posts: 59
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| mvic wrote: |
| Code: |
| public TopicSession getTopicSession() throws JMSException |
with the following short description: "Gets the topic session associated with this XATopicSession." So I think the strict answer to your question is no, but really the answer is yes, because you can get a TopicSession from the XATopicSession easily. |
I try myXaTopicSession.getTopicSession().run() without transactional context and it doesn't work. |
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| fjb_saper |
| Posted: Wed Apr 12, 2006 7:12 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| garonne wrote: |
| mvic wrote: |
| Code: |
| public TopicSession getTopicSession() throws JMSException |
with the following short description: "Gets the topic session associated with this XATopicSession." So I think the strict answer to your question is no, but really the answer is yes, because you can get a TopicSession from the XATopicSession easily. |
I try myXaTopicSession.getTopicSession().run() without transactional context and it doesn't work. |
Did you try to extract the XAResource from your XATopic session and bind it to your TM?
Enjoy 
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| garonne |
| Posted: Wed Apr 12, 2006 11:58 pm Post subject: |
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Acolyte
Joined: 26 Jan 2006
Posts: 59
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| fjb_saper wrote: |
Did you try to extract the XAResource from your XATopic session and bind it to your TM?
Enjoy |
Before, no. And now yes and it's likely that it work
thanks |
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