Subject: RE: [xsl] trouble with preceding axis From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Tue, 3 Jan 2006 21:09:21 -0000 |
//item[label = 'subTitle']/preceding-sibling::item[1] Your expression //preceding::item[label = 'subTitle'] means /descendant-or-self::node()/preceding::item[label = 'subTitle'] which finds all the nodes in the document, then for each one searches backwards to find preceding items with label='subtitle', and then eliminates the duplicates. Note also the distinction between preceding-sibling and preceding. In your case the [1] is unnecessary because there is only one preceding sibling item, but I guess your real problem is a bit more complex. Michael Kay http://www.saxonica.com/ > -----Original Message----- > From: Duane Gran [mailto:duane.gran@xxxxxxxxx] > Sent: 03 January 2006 18:35 > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx > Subject: [xsl] trouble with preceding axis > > I'm having some trouble using the preceding axis in XPath and would > be much obliged if someone could steer me in the right direction. I > have the following document: > > <root> > <item order="3"> > <label>Title</label> > </item> > <item order="4"> > <label>subTitle</label> > </item> > </root> > > I have the following XPath to select the second item, based on the > value of its label child: > > //item[label = 'subTitle'] > > Now I want to modify this so that I refer to the preceding item > element, the first one in the list. I tried the following without > success (it returns the second item element): > > //preceding::item[label = 'subTitle'] > > Suggestions are most welcome on this. > > Duane
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