Re: [xsl] how to test if a child node have a specific name?

[David Carlisle <davidc@xxxxxxxxx>]

> I want to know which one is the correct one?

they are all correct XSLT but I suspect none of them really tests what
you want,

Note that in
<a>
 <b/>
 <c/>
</a>

the first node of a does not have name "b" as it is a text node with
string value a newline and name "". So you probably want to test with
element nodes (*) rather than all nodes (node() )

test="child::node()[1]=NodeName"

This tests if the string value (ie, the content, not the name) of the
first node is equal to the string value of any child element with name
NodeName

so it would be true on

<a><x>hello</x> <hh/>  <NodeName>hello</NodeName></x>

as the two "hello" are equal.

 test="child::node()[1]='NodeName'"

tests if the string value of the first node is the string "Nodename"
so it would be true on


<a><x>NodeName</x> <hh/> </x>


  test="name(child::node()[1])='NodeName'"

This is nearly what you want and would be true on
<a><NodeName>hello</NodeName>    ....</x>
But it is false on
<a>
 <NodeName>hello</NodeName>    ....
</x>

I suspect you want

 test="*[1][self::NodeName]"

David


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