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Nick Radov

Subject: Nothing returned when namespace used
Author: Nick Radov
Date: 12 Apr 2007 10:01 PM

I just started using Stylus Studio 2007 and am having some trouble using it to create an XQuery statement. I have attached the sample XML file I am trying to query. And here is the XQuery statement, in which I just want the text value of one element.

/ORU_R01/MSH/MSH.12/VID.1/text()

That query doesn't return anything. However, if I remove the xmlns attributes from the root element of the XML document then the query does work and returns "2.2".

I suspect I just don't have the syntax right for querying with namespaces. Can anyone suggest how I can fix it? Is there a way to get Stylus Studio to generate the correct XQuery?

good.xml
Sample HL7 V2 XML document

Ivan Pedruzzi

Subject: Nothing returned when namespace used
Author: Ivan Pedruzzi
Date: 12 Apr 2007 10:14 PM

Nick,

You have to declare the namespace in xquery in order to select the right xpath expression.

Hope this helps
Ivan Pedruzzi
Stylus Studio Team

declare namespace hl7 = "urn:hl7-org:v2xml";

/hl7:ORU_R01/hl7:MSH/hl7:MSH.12/hl7:VID.1/text()

Nick Radov

Subject: Nothing returned when namespace used
Author: Nick Radov
Date: 13 Apr 2007 12:48 PM

Thanks, I figured it was something like that. Is there any way to make Stylus Studio automatically generate that syntax? I generated the original query just by clicking on the element I wanted in the GUI.

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