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| Couple-IT |
 Posted: Fri Nov 03, 2006 4:07 am Post subject: MQRFH2 Header Question |
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Novice
Joined: 06 Apr 2006
Posts: 11
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hello,
My understanding is that :
The MQMD format will tell that a message includes MQRFH2.
The MQRFH2 is the first part of the message body.
Now my two questions.
1. Where in the MQMD is this told ?
2. Why is the first part of the message body used to store this in ?
I'm qurious to your answers... |
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| Vitor |
| Posted: Fri Nov 03, 2006 4:16 am Post subject: Re: MQRFH2 Header Question |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| Remco_QNH wrote: |
The MQMD format will tell that a message includes MQRFH2.
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It would seem you've answered your own first question.
| Remco_QNH wrote: |
The MQRFH2 is the first part of the message body.
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Where else would you put a header? 
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Honesty is the best policy.
Insanity is the best defence. |
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| Couple-IT |
| Posted: Fri Nov 03, 2006 4:27 am Post subject: |
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Novice
Joined: 06 Apr 2006
Posts: 11
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| In my understanding headers are not normally stored in the messagebody, but in the MQMD. Because I've just seen a message using PQEdit. Where every header is displayed as usual and then a JMS header is added to the original message. |
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| jefflowrey |
| Posted: Fri Nov 03, 2006 4:30 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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The MQMD is a fixed length header, with a specific and exact set of fields.
There is no room in it for any other headers.
A "JMS" header is an MQRFH2 header, that has a specific folder named "jms" in it.
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| Couple-IT |
| Posted: Fri Nov 03, 2006 4:48 am Post subject: |
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Novice
Joined: 06 Apr 2006
Posts: 11
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Thanks Jeff....
So it all comes down to a matter of space/room. For some reason I allready had a feeling like that. I just couldn't believe it.
Do you also know what field in the MQMD is indicating RFH2 is used ? |
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| Vitor |
| Posted: Fri Nov 03, 2006 4:53 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| Couple-IT wrote: |
Do you also know what field in the MQMD is indicating RFH2 is used ? |
You've already said it yourself - the format in the MQMD indicates the use or otherwise of an RFH2 
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| jefflowrey |
| Posted: Fri Nov 03, 2006 5:05 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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The Format field of the MQMD indicates the format of the first section of the message body.
If the MQMD Format indicates that the first section of the message body is a header, then the Format field of the header indicates the format of the next section of the body.
You could have 100 MQRFH2 headers in a message if you wanted.
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| mlpet |
| Posted: Tue Nov 07, 2006 1:29 pm Post subject: |
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Newbie
Joined: 07 Nov 2006
Posts: 1
Location: New York, NY
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| Couple-IT or anyone else involved - I am also forced to use VB (via Microsoft Access) to create my MQ message. I can generate and Put the message fine, but it requires the RFH2 header in order to translate properly. The problem is I can't find any VB/VBA sample code that does this properly. Do you have any leads? Thanks. |
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| jefflowrey |
| Posted: Tue Nov 07, 2006 2:41 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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You might want to use XMS for .NET.
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| Vitor |
| Posted: Wed Nov 08, 2006 1:01 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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If you don't want to go with XMS (which is the more future proof), there's some example code here:
http://muyunda.programmersheaven.com/download/26070/download.aspx
Standard disclaimer - I'd didn't write this code, my inclusion of this link is in no way an endorsement of the code, blah, blah, etc.
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