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| say_2_anil |
 Posted: Fri Dec 01, 2006 3:14 am Post subject: Can i read the message put by MQ Native API, using JMS API. |
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Newbie
Joined: 16 Nov 2006
Posts: 8
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Hi,
We did put a message onto the queue using MQ Native API (using MQMessage).
I require that to be read by JMS Client.
Now How can i access that message using JMS API, i mean by which message subtype out of the following.
Stream, Map, Text, Object and Bytes
Thanks,
Anil Kumar Mithinti. |
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| Vitor |
| Posted: Fri Dec 01, 2006 3:19 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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Which subtypes have you tried? What happened when you tried?
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| say_2_anil |
| Posted: Fri Dec 01, 2006 3:30 am Post subject: |
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Newbie
Joined: 16 Nov 2006
Posts: 8
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I tried to cast the received message (which was pushed using MQ Native MQMessage) to TextMessage, but it has given ClassCastException.
when i tried to print the JMSType using Message.getJMSType(). it is giving NullPointerException. |
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| Vitor |
| Posted: Fri Dec 01, 2006 3:35 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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You need to spend a little time with the Using Java manual.
A message placed with the standard interface will not have an RFH2 header, and so the jms properties will be missing.
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| Vitor |
| Posted: Fri Dec 01, 2006 3:38 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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Sorry, to clarify a little - a message placed with the native interface will not have an RFH2 header unless specific application action is taken to add it and so the jms properties (like JMSType) will be missing.
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| mvic |
| Posted: Fri Dec 01, 2006 4:20 am Post subject: Re: Can i read the message put by MQ Native API, using JMS A |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| say_2_anil wrote: |
| I require that to be read by JMS Client. |
May I ask, why is this a requirement? |
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| jefflowrey |
| Posted: Fri Dec 01, 2006 4:30 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| say_2_anil wrote: |
| I tried to cast the received message (which was pushed using MQ Native MQMessage) to TextMessage, but it has given ClassCastException. |
Then probably the MQMD.Format <> MQFMT_STRING.
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| say_2_anil |
| Posted: Fri Dec 01, 2006 4:50 am Post subject: |
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Newbie
Joined: 16 Nov 2006
Posts: 8
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Hi,
My requirement is like that only,
There is a source application which puts the message onto MQ Server using the native API.
and My destination application will receive the message from the server using the JMS APIs.
Thanks,
Anil |
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| jefflowrey |
| Posted: Fri Dec 01, 2006 5:22 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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If you want your destination application to receive TextMessages, then your source application needs to indicate that the message is string data.
This is done with the MQMD, by setting the Format field to MQFMT_STRING.
Note that this does not break the separation between senders and receivers, because it does not require that the sender know anything about the receiving applications. It is just that the sender has to properly label its messages to accurately represent what they are.
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| mvic |
| Posted: Fri Dec 01, 2006 6:29 am Post subject: |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| say_2_anil wrote: |
There is a source application which puts the message onto MQ Server using the native API.
and My destination application will receive the message from the server using the JMS APIs. |
If you have an app writing messages onto this queue using non-JMS formats, wouldn't it be better to keep this queue solely for similar messages? Then you could process the queue using a non-JMS app.
In other words, can you use separate queues: one for JMS messages, one for non-JMS messages? |
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| billybong |
| Posted: Sun Dec 03, 2006 7:34 am Post subject: |
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Disciple
Joined: 22 Jul 2005
Posts: 150
Location: Stockholm, Sweden
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Listen to Jeff. Format="MQSTR " , problem solved.
I think that if you want to go the other way, sending from a jms app to an MQI reciever, you have to specify it (dont remember exactly how) in order to strip the extra JMS headers.
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| fjb_saper |
| Posted: Sun Dec 03, 2006 9:24 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
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Location: LI,NY
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| billybong wrote: |
Listen to Jeff. Format="MQSTR " , problem solved.
I think that if you want to go the other way, sending from a JMS app to an MQI receiver, you have to specify it (don't remember exactly how) in order to strip the extra JMS headers. |
You have to specify targetClient=1 on the JMS Destination going the other way...
Enjoy 
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| say_2_anil |
| Posted: Mon Dec 04, 2006 2:15 am Post subject: |
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