Re: question about generate-id()
On Thu, 5 Aug 2010 10:11:06 +0100 (IST) "Tony Graham" <Tony.Graham@xxxxxxxxxxxxxxxxxxxxxx> wrote: > Possibly not everybody uses @id to mean an ID, plus there's plenty of > other attributes, such as @name, that may or may not be IDs. The only > attribute that is guaranteed to be an ID is @xml:id, and that > postdates XSLT 1.0 by about six years. In which case it is badly|wrongly named. I'd like to ask James about the intention. I'm pretty sure it was for (what is now) xml:id 'generate-random-name'? > > > 16.6.4 > > There is no guarantee that a generated unique identifier will be > > distinct from any unique IDs specified in the source document. > > > > Yuk. IMHO that's a spec weakness. More constrained, surely > > it's not rocket science to implement. > > You could do it yourself Which would IMHO be a kludge to work round a spec weakness. Yes. Lots of ways to do it as this thread has shown. > > In this brave new world of streaming XSLT, you might not see the > existing ID value until after you've generated what would be a > duplicate ID. Even with a large document I'm pretty sure it's possible to pull any (xml:)id values - from the source, not the built output to check for uniqueness. -- regards -- Dave Pawson XSLT XSL-FO FAQ. http://www.dpawson.co.uk
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