CODEWITHSUNDEEP
xpath
Tom
Tom

Reputation: 1045

Why does my XPath query return the default node when the node I want exists?

I have the following XPath 1.0 query:

/root/Nodes/*[self::CustomNode[not(../DefaultNode)]|self::DefaultNode]/Name

As I understand it, this will return /root/Nodes/CustomNode/Name if it exists, or /root/Nodes/DefaultNode/Name if it's not found. However, /root/Nodes/DefaultNode/Name is being returned even when /root/Nodes/CustomNode/Name is present. Any ideas how I can fix this?

DefaultNode nodes always proceed CustomNode nodes in the document order.

Thanks

Upvotes: 0

Views: 194

Answers (1)

Steve Wellens
Steve Wellens

Reputation: 20620

Are you thinking the vertical line (|) works like an OR?

Here's the details: http://www.w3schools.com/xpath/xpath_operators.asp

| Computes two node-sets: //book | //cd Returns a node-set with all book and cd elements

Semantics:
It returns nodes that meet condition A OR condition B.
It returns nodes that meet condition A AND nodes that meet condition B.

Upvotes: 1

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