Subject: RE: === Identifying a unique node in a DOM tree === From: Kevin Williams <Kevin.Williams@xxxxxxxxxxxxxx> Date: Tue, 30 May 2000 12:45:30 -0400 |
> If we are to make alterations to a dom tree, and xsl does not actually > identify a node by xpath in a dependable manner (see quote from xsl list > below), is there an XML or DOM implementaion that uniquely identifies a > node? The purpose is to NOT use a database, but instead a flat xml file and > be able to identify and edit a particular node. I'm not sure what you're asking for here - the DOM, in general, allows the programmer to operate on individual nodes. XSLT, on the other hand, is designed to operate on node sets (which may or may not consist of a single node). If you need some way of identifying the nodes, you can use the generate-id function in XPath - but I'm not sure that addresses your problem. > Although you probably understand what I mean if I was to > indicate a path > like "http://my.xml.com/document.xml#/root/chapter/section", > the fact is > that that notation CANNOT work. Only in the sense that a (hypothetical) construct like c:/documents/root*/chapter*/section* doesn't work - there's no way to guarantee that the expression only returns one node (although it might, or it might return no nodes at all). One of the nice things about XPointer (IMO) is that you can use it to point to more than one node - you could use it, for example, to embed all the interesting content from one document in another document without needing to reference it node-by-node. - Kevin Kevin Williams XML Architect Ultraprise Corporation XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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