Subject: Re: [xsl] XSLT 2 and XSLT 3: Best Way To Get Set of Unique Docs for A Set of Elements From: "Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 5 Mar 2019 19:14:59 -0000 |
Given the variable $links that is a sequence of element()s where the elements could be from different documents, what is the best way to get the set of unique documents?
I need an XSLT 2 answer but an XSLT 3 answer would also be useful.
I feel like there's an obvious solution I'm overlooking but the only thing I can think of is to compare the document-uri() values of all the elements:
<xsl:variable name="topicURIs" as="xs:string*" select="distinct-values(for $e in $links return document-uri(root($e)))" /> <xsl:variable name="topics" as="document-node()*" select=" for $uri in $topicURIs return root(($links[document-uri(root(.)) eq $uri])[1]) " /> o;?
This works but seems unnecessarily complicated.
Wouldn't $links/root() suffice?
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