Question

How to get an XML Nodelist for elements with a specific attribute

Asked by: ieg

I need to process an XML file with <Variable> elements.
Each element may or may not have an attribute called 'Form'.
I'd like to create a nodelist of all <Variable> elements with a 'Form atribute.
Can someone advise on the Xpath query I need to do?
Sample XML is
<Root>
<Variable Form='IMP123' Name='AndyTest'>
<Variable List='LST234' Name='BobTest'>
</Root>

Many thanks
Andy

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Asked On
2009-09-10 at 04:16:36ID24720915
Tags

XML Nodelist

Topic

Extensible Markup Language (XML)

Participating Experts
1
Points
500
Comments
3

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Answers

 

by: ChristoferDutzPosted on 2009-09-10 at 04:45:08ID: 25299208

The XPath is:

//Variable[@Form]

 

by: ChristoferDutzPosted on 2009-09-10 at 04:49:13ID: 25299227

This selects any (indicated by the "//") element named "Variable". And filters (indicated by the code inside the "[" and "]") those "Variable" elements that possess a "Form" Attibute (indicated by the "@" before the "Form")

An alternative for your sample would be:
/Root/Variable[@Form]
Which selects only those Variables that are children (indicated by the second "/") of a document root (indicated by the first "/") called "Root"

Just to add a little more explanation to my answer :-)

 

by: iegPosted on 2009-09-10 at 05:30:51ID: 31627017

Many thanks - that works a treat

20120131-EE-VQP-002

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