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MQSeries.net Forum Index » User Exits » Message Exits - Can we strip out part of xml message

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mk15
PostPosted: Wed Sep 19, 2018 4:05 pm    Post subject: Message Exits - Can we strip out part of xml message Reply with quote

Newbie

Joined: 03 Aug 2011
Posts: 1

Hello All,

I'm new to exit development. I would like to know whether it's possible to remove some elements of XML messages before placing them into a Queue using message exits.
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Vitor
PostPosted: Thu Sep 20, 2018 4:58 am    Post subject: Re: Message Exits - Can we strip out part of xml message Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

mk15 wrote:
I would like to know whether it's possible to remove some elements of XML messages before placing them into a Queue using message exits.


It's possible to code anything in an exit. Best practice is to never write an exit at all.

Seriously. The problems and dangers of exits have been discussed many times in here, and a search on your part will be more profitable than a repetition on my part. I will stick with my trusty soundbite:

"If the answer is an exit, you have the wrong question"

If you're bound and determined on the near-suicidal course of using an exit, it's critical that the exit be fast, efficient and unable to throw any kind of error. None of these attributes are ones I associate with an XML parser.

One last illustrative soundbite (sort of); I've worked with MQ since 1996 and in all that time I've written 3 exits because there was no alternative. I urge you to think really carefully about this solution, especially the longer term costs of maintaining this code.
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gbaddeley
PostPosted: Thu Sep 20, 2018 4:20 pm    Post subject: Re: Message Exits - Can we strip out part of xml message Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2491
Location: Melbourne, Australia

mk15 wrote:
..I would like to know whether it's possible to remove some elements of XML messages before placing them into a Queue..

It seems a bit obvious, but the app code could do this before putting the msg.
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Glenn
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Vitor
PostPosted: Fri Sep 21, 2018 6:22 am    Post subject: Re: Message Exits - Can we strip out part of xml message Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

gbaddeley wrote:
mk15 wrote:
..I would like to know whether it's possible to remove some elements of XML messages before placing them into a Queue..

It seems a bit obvious, but the app code could do this before putting the msg.






It would be my preferred choice for sure.
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