February 2009 - jboss-dev-forums - Jboss List Archives

[Design of JBossXB] - Re: 2 root elements question

by alex.loubyansky＠jboss.com

The resolver issue is https://jira.jboss.org/jira/browse/JBXB-185 It's done now. I'm gonna look into JBXB-182 and then release the XB. And after that the next metadata CR. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213667#4213667 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213667

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: rolled back messages delivered twice.

by ataylor

Ok, I meant before onMessage on the endpoint not the message listener. Ok, so i guess the problem is that we need to enlist the resouce before JBM calls its onmessage. The only way i can see of doing this is to add some special kind of message listener with before and after callbacks that the JMSMessageListenerWrapper calls. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213662#4213662 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213662

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: rolled back messages delivered twice.

by timfox

What I meant is, you said that you enlist the transaction *before* onMessage is called. Here is the code in JBM that calls onMessage in JMSMessageListenerWrapper: | try | { | listener.onMessage(jbm); | } | catch (RuntimeException e) | { | //See JMS 1.1 spec, section 4.5.2 | | log.warn("Unhandled exception thrown from onMessage", e); | | if (!transactedOrClientAck) | { | try | { | session.getCoreSession().rollback(true); | | session.setRecoverCalled(true); | } | catch (Exception e2) | { | log.error("Failed to recover session", e2); | } | } | } | So in order to do enlistment before and after onMessage is called, you'd have to change that code, which you don't have access to in JCA. So I don't understand how you can do the order that you specified. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213658#4213658 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213658

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: rolled back messages delivered twice.

by gaohoward

ok. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213657#4213657 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213657

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: rolled back messages delivered twice.

by ataylor

"gaohoward" wrote : If the message is with a Tx, the ack of it should be controlled by the TX, consumer shouldn't do the ack, right? | The consumer will still ack, even if within a tx. They are just handled differently. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213654#4213654 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213654

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: rolled back messages delivered twice.

by gaohoward

If the message is with a Tx, the ack of it should be controlled by the TX, consumer shouldn't do the ack, right? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213650#4213650 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213650

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: rolled back messages delivered twice.

by ataylor

I think the question is, do we handle rollback properly when a message is in flight from server to client. The server thinks its delivered so its cancelled. The client receives it after rollback so consumes then acks it. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213647#4213647 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213647

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: rolled back messages delivered twice.

by gaohoward

is it possible that the second message (you omitted) happens to be in the same TX with the one in question? If they are in the same TX, they will be rolled back together. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213646#4213646 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213646

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[Design the new POJO MicroContainer] - Re: MutableClassInfo?

by alesj

Fine by me. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213640#4213640 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213640

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: rolled back messages delivered twice.

by ataylor

By the real onMessage i assumed you meant the onMessage implementation? | | public void onMessage(Message message) //JBM onmessage | { | tm.begin(); | | trans = tm.getTransaction(); | | trans.enlistResource(res)//res is xasession.getresource | | onmessage()//endpoint onmessage | | tm.rollback(); | } | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213633#4213633 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4213633

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jboss-dev-forums February 2009