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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] parsing a token list and finding a common ancestor in
 I have a set of <node> elements with @n identifier attributes, which are unique in the document. The <node> elements nest within one another to describe a tree. Given a list of some of those @n identifiers (in the token list attribute value of another element elsewhere in the document), which point to a set of <node> elements, I need to find the common ancestors of all <node> elements referenced in that list. Assuming the list of identifiers is in the @wit attribute of some <app> element, I think I can state my problem as: Find all <node> elements that are the shared ancestors of all <node> elements whose @n attribute value is one of the values in the @wit token list. I tried, without success, several variants of: <xsl:foreach select="//app"> <xsl:value-of select="//node[@n=tokenize(@wit, ' ')]/ancestor::node"/> </xsl:foreach This doesn't work, apparently because it looks for <node> elements whose @n value is the entire tokenized list, instead of any member of the list. That is, it seems to work when @wit is a one-item list, but it returns empty if there is more than one item specified in @wit. Furthermore, even if it did work, I fear that it might get the union of ancestors of *any* of the nodes in question, while I need the much more restricted intersection of common ancestors shared by *all* the nodes. Have I conceptualized the problem incorrectly? Is there an obvious XPath function that would help me out that I'm overlooking? I'm using XSLT 2.0 and XPath 2.0. Thanks, David djbpitt@xxxxxxxx 
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