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| amoljoshi |
 Posted: Fri Mar 11, 2005 3:53 am Post subject: User defined message headers |
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Newbie
Joined: 31 Dec 2004
Posts: 6
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Hi all,
Would appreciate detailed help regarding the following :
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We have a integration scenario for two applications written in different languages. One end application is always going to be a J2EE application and we do not know who the other end can be.It might be a C application or a Java application too. Basically needs to be a application with MQ interface available.
The MQ message data i.e. data to be exchanged is always going to be a file which i can pass as a bytes array.Along with it, i need to pass some mandatory information everytime.
The query is :
Can I have a message with some application defined headers included(name value pair like OriginTransactionId=orgn1234565) in the message as well as the file sent as the chunk of the bytes i.e.message data?
If this is possible, do all available sets of MQ APIs (Visual
Basic, C, C++, Java,COBOL etc) support the setting / getting the application defined header values?
If this is possible and somebody has already done this, PLEASE guide in detail.
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Thanks
Amol Joshi |
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| jefflowrey |
| Posted: Fri Mar 11, 2005 3:58 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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The MQ Rules and Formatting header is somewhat designed for this purpose.
If you do a setProperty in JMS, then the property is put into the MQRFH2 header.
There was a recent question from PeterPotkay about sample code for reading and writing the MQRFH2 header in C++.
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I am *not* the model of the modern major general. |
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| amoljoshi |
| Posted: Sun Mar 13, 2005 10:23 pm Post subject: |
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Newbie
Joined: 31 Dec 2004
Posts: 6
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Hi jefflowrey
thanks for the reply.
Based on the same I referred the doc "Application Programming Reference" from IBM which explains RFH2 / RFH headers in detail.
The RFH2 headers need the data( NameValueData)in the XML like format to the best of my knowledge which I can not do for some reasons. from the documentation I could figure out that may be MQRFH (& not MQRFH2) fits into the requirement.
I repeat the requirement :
I need to send some name value pairs [strictly in NonXML strcture, just for the sake of avoiding any heavy , XML aware customization of the other side] along with the data.
Which one to go for : MQRFH or MQRFH2??
Any known limitations of these???
-- Regards,
Amol |
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| EddieA |
| Posted: Mon Mar 14, 2005 10:39 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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| Quote: |
| The RFH2 headers need the data( NameValueData)in the XML like format |
No. The RFH2 header stores the data in an XML like way, but in the API, you SET/GET a single field of the correct type.
Cheers,
_________________
Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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| RogerLacroix |
| Posted: Mon Mar 14, 2005 11:00 am Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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All,
Just to be even clearer on this subject:
RFH version 1 - data payload is stored as name / value pair
RFH version 2 - data payload is stored as one or more folders - each folder is an XML structure (and of course, you can use the set/get functions to access the data)
Regards,
Roger Lacroix
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| amoljoshi |
| Posted: Tue Mar 15, 2005 9:40 pm Post subject: |
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Newbie
Joined: 31 Dec 2004
Posts: 6
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Hi
What should the Java application use in this case? JMS apis and setXXXProperty functions or the MQ Java Apis? Is it possible to do this using MQ Java APIs??
Thanks
Amol J |
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| jefflowrey |
| Posted: Wed Mar 16, 2005 5:20 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| amoljoshi wrote: |
| Is it possible to do this using MQ Java APIs?? |
The RFH2 is a WebSphere MQ "standard" header. IBM publishes all the information about the header, and it is supported in all WebSphere MQ environments (after, I think, 5.1?).
Therefore, you can create an RFH2 header in any programming language that allows you to use the WebSphere MQ API.
However, there are not presupplied functions or objects for working with the RFH2 header in a "programmer friendly" manner.
But there is tons of sample code all over the place for doing so.
All you have to do is look for it.
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| smantrala |
| Posted: Mon Jun 29, 2009 12:57 pm Post subject: |
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Newbie
Joined: 29 Jun 2009
Posts: 3
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| jefflowrey wrote: |
The MQ Rules and Formatting header is somewhat designed for this purpose.
If you do a setProperty in JMS, then the property is put into the MQRFH2 header.
There was a recent question from PeterPotkay about sample code for reading and writing the MQRFH2 header in C++. |
Hello,
Could you please sample code or link to for reading MQRFH2 in c++ in this thread? |
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| Vitor |
| Posted: Mon Jun 29, 2009 1:02 pm Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| smantrala wrote: |
| Could you please sample code or link to for reading MQRFH2 in c++ in this thread? |
This post is 4 years old - times have changed. If you want to manipulate RFH2 in C++, use XMS.
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Honesty is the best policy.
Insanity is the best defence. |
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| gbaddeley |
| Posted: Mon Jun 29, 2009 5:14 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| Vitor wrote: |
| smantrala wrote: |
| Could you please sample code or link to for reading MQRFH2 in c++ in this thread? |
This post is 4 years old - times have changed. If you want to manipulate RFH2 in C++, use XMS. |
And in the last 4 years XML has become more prominent. Even if one end does not have a full XML parser, name/value pairs in simple XML element and tag structures are pretty easy to parse, eg. <car color="red" wheels="4"/>
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Glenn |
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