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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Parsing XML without knowing the first tag name

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KSkelton
PostPosted: Wed Apr 16, 2003 5:32 am    Post subject: Parsing XML without knowing the first tag name Reply with quote

Apprentice

Joined: 28 Oct 2001
Posts: 45
Is there a way to access a tag value from XML without knowing the name of the top-most tag?

For instance, say I have a message flow which receives various forms of XML which have to be routed based on the second tag:

<input1><route_label>high</route_label></input1>
<input2><route_label>low</route_label></input2>
<input3><route_label>mid</route_label></input3>

Normally I would set the local environment request variable with:
Set stuff = InputRoot.XML.Input.route_label.

However, I cannot do this since the first tag name is unknown (input#).
Is there a way to access the route_label tag without referencing the input tag?
I've tried XML.Element[1] etc... No luck?
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jefflowrey
PostPosted: Wed Apr 16, 2003 6:48 am    Post subject: Reply with quote

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981
You don't say what version of WMQI you are using. If you are using 2.1, you can use a reference to do this.
Code:
declare aRef reference to InputRoot.XML;
move aRef FIRSTCHILD;
if aRef.route_label = 'high' then
    --set routing for high
end if;


If your document has DOCTYPE decls or other processing instructions, you should replace FIRSTCHILD with LASTCHILD, as that's where the root tag will be.

Or you can try
Code:
InputRoot.XML.*[1].route_label
or
Code:
InputRoot.XML.*[LAST].route_label
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