Subject: RE: XPath query to recurse up the tree From: Kevin Williams <Kevin.Williams@xxxxxxxxxxxxxx> Date: Thu, 17 Aug 2000 10:56:12 -0400 |
Ian, Couldn't you use an XPath expression like the following? ancestor::directory[@TYPE='X'] It's not recursion, really, since the chain of parentage is linear, but it sounds like it'll do what you're asking for... - Kevin > -----Original Message----- > From: Ian Sutton [mailto:ian.sutton@xxxxxxxxxxx] > Sent: Thursday, August 17, 2000 9:59 AM > To: 'XSL-List@xxxxxxxxxxxxxxxx' > Subject: XPath query to recurse up the tree > > > Am I missing something, or is the current definition of XPath > queries (or > whatever the current name is) limited to recursion down the tree? > > As an example, consider an XML document representing a file > system with > <directory> nodes which can contain either <file> nodes or further > <directory> nodes. (Case I have is actually nothing to do > with filesystems > but this seems the simplest way to represent the issue.) > > Given a current context of a directory, I could find all > child file nodes > recursively with > > <xsl:apply-templates select=".//file" /> > > and a corresponding template rule. > > I have a case where my <directory> nodes have certain > additional attributes > (lets say optional TYPE=something) and I wish to find the > first parent which > has say TYPE=X. Is there any way to do this? > > I kind of half guess it may be possible to do something like > a recursive > call with an apply templates select=".." > mode="myUpwardRecursion" and write > a specific template match rule which tests the attribute and > either returns > or recurses up, but this seems fairly painful if indeed it > would work at > all. > > Any answers/ideas gratefuly received ;-> > > Ian > > > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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