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XSLT key element: "use" parent node in "match"

I seem to be unable to understand this thing. Is it possible to have the following key?

<xsl:key name="kMatchSentenceID_withTokId" match="sentences/sentence/@ID"
         use="--and here return the 'sentences' node--"/>

I don’t understand how “use” works, shouldn't that be the value you return when the match matches?

I see that it use="."returns the attribute value in my case. (Why? Is this a coincidence? .Means node()?, Not node()/@)

But most importantly, why I can not do something like this: use="parent::sentence[@ID=name()]"

How would I do that? I need a match on @ID, but return its parent (more specifically, the parent id).

Thank.

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3 answers

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, sentence @ID sentence. :

<xsl:key name="kMatchSentenceID_withTokId" match="sentences/sentence" 
         use="parent::*/@ID"/>

:

<xsl:key name="kMatchSentenceID_withTokId" match="sentences/sentence/@ID"
         use="parent::sentence[@ID=name()]"/>

... ID sentence, , .

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-

<sentences id="parent">
  <sentence id="childa"/>
  <sentence id="childb"/>
</sentences>

:

<xsl:key name="sentence" match="sentences" use="sentence/@id"/>

, , XPath key('sentence','childa')/@id 'parent'.

+1

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