Subject: [xsl] XPath expression to check that there are no intervening elements? From: "Costello, Roger L. costello@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 19 Jul 2016 15:44:16 -0000 |
Hi Folks, This XML has a solid block of <B> elements: <Document> <A/> <B/> <B/> </Document> This XML has an intervening <C> element: <Document> <A/> <B/> <C/> <B/> </Document> I need an XPath expression to return a Boolean value: Return true if there is one solid block of <B> elements (no intervening elements). Otherwise, return false. I created a horrendous XPath expression to solve it: count(B) eq (B[last()]/count(preceding-sibling::*)+1 - B[1]/count(preceding-sibling::*)) Can you provide a better (simpler, more efficient) XPath expression? /Roger
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