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From Jason Whaley <jasonwha...@gmail.com>
Subject Re: Is it possible to generate message-id before sending the JMS message?
Date Fri, 23 Sep 2011 14:16:03 GMT
Agreed with Gary's question here... why not use your database to generate a unique ID for each
record and then shove that ID in to a property with an application specific name on the JMS
message?  


On Sep 23, 2011, at 8:08 AM, Gary Tully wrote:

> be careful, you need to retain the uniqueness constraints of the
> component attributes of a message id. have a peek at how the message
> id is generated so that you can understand the intent of each
> component.
> 
> Why do you want to override the messageId?
> 
> On 23 September 2011 14:19, kaustubh khasnis <kaustubh.khasnis@gmail.com> wrote:
>> Please correct me if I am wrong, but in same onSend method one could
>> override the messageId as well right?
>> 
>> We also planning to use same, are there any ill-effects of that?
>> 
>> Thanks and regards
>> Kaustubh
>> 
>> On Thu, Sep 22, 2011 at 11:49 PM, Martin C. <martinc@gmx.at> wrote:
>> 
>>> Hi,
>>> 
>>> ok I see, but this is only possible if sending is done directly before
>>> committing the database transaction. It wouldn't work so well if
>>> sending was done "somewhere" during the process. I had hoped that I
>>> could feed something along a UUID as the message ID and it would be
>>> used then, but I can see how this would make certain things (like
>>> duplicate detection, ...) a lot harder.
>>> 
>>> Thanks for your answer, anyways!
>>> 
>>> Best regards,
>>> Martin
>>> 
>>> On Thu, Sep 22, 2011 at 7:36 PM, Gary Tully <gary.tully@gmail.com> wrote:
>>>> you would need to pass use your own message impl that extends
>>>> ActiveMQMessage and override
>>>> org.apache.activemq.command.ActiveMQMessage#onSend
>>>> 
>>>> on that callback, you will have the messageId and be able to commit
>>>> the db transaction. On return from that method the message will be
>>>> sent.
>>>> be sure and call super.onSend() though.
>>>> 
>>>> On 22 September 2011 18:09, Martin C. <martinc@gmx.at> wrote:
>>>>> Hi,
>>>>> 
>>>>> I'd like to know the message ID of a message I am going to send before
>>>>> actually sending it. Is this possible?
>>>>> 
>>>>> Reason is that I want to delay sending the JMS messages until my
>>>>> database transaction has been comitted, but I already want to record
>>>>> the message IDs as correlation IDs in exactly this database
>>>>> transaction.
>>>>> 
>>>>> Best regards,
>>>>> Martin
>>>>> 
>>>> 
>>>> 
>>>> 
>>>> --
>>>> http://fusesource.com
>>>> http://blog.garytully.com
>>>> 
>>> 
>> 
> 
> 
> 
> -- 
> http://fusesource.com
> http://blog.garytully.com


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