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MQSeries.net Forum IndexWebSphere Message Broker SupportCreate Atribute after Prolog

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Gama
PostPosted: Wed Mar 10, 2021 8:55 am Post subject: Create Atribute after Prolog Reply with quote

Centurion

Joined: 11 Jan 2005
Posts: 103
Location: Portugal

Hi,

I need to create the follow structure in bold after XML Prolog with ESQL

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?wilogs-api modele="xxxxx.xml"?>
<DT_WMS-MCN>
<DT_GRP>
.
.
.
</DT_GRP>
</DT_WMS-MCN>

To create the prolog is simple:

SET OutputRoot.XMLNSC.(XMLNSC.XmlDeclaration) = '';
SET OutputRoot.XMLNSC.(XMLNSC.XmlDeclaration)*.(XMLNSC.Attribute)Version = '1.0';
SET OutputRoot.XMLNSC.(XMLNSC.XmlDeclaration)*.(XMLNSC.Attribute)Encoding = 'UTF-8';
SET OutputRoot.XMLNSC.(XMLNSC.XmlDeclaration)*.(XMLNSC.Attribute)standalone = 'no';

And the <?wilogs-api modele="xxxxx.xml"?> ????

Any suggestion will be appreciated.

Bes regards
Gama
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timber
PostPosted: Wed Mar 10, 2021 5:38 pm Post subject: Reply with quote

Grand Master

Joined: 25 Aug 2015
Posts: 1174

That's not an attribute, it's a processing instruction. And yes, the difference does matter.

This page in the KC explains how XMLNSC deals with processing instructions: https://www.ibm.com/support/knowledgecenter/en/SSMKHH_10.0.0/com.ibm.etools.mft.doc/ac67196_.html

You will notice that, by default, XMLNSC discards them when parsing. But you can still put them into the message tree using ESQL. And you can also politely ask XMLNSC not to discard them when parsing. So...

1. Create a minimal document containing your processing instruction
2. Create a tiny message flow that parses that document. Make sure that you have enabled the special setting that preserves processing instructions for XMLNSC!
3. Add a Trace node after the input node and set the pattern to ${Root}
4. Examine the output of the Trace node. It will tell you exactly what the message tree needs to look like if you want to generate that document.
5. In your real message flow, add a single line of ESQL to create your processing instruction.
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