Re: RE: James Clark: XML versus the Web
On Wed, 1 Dec 2010 15:51:17 -0800, Dimitre Novatchev <email@example.com> wrote: >> XSLT is an event-based language so it ought to be possible to find a >> way to >> make it handle user-input events (or data arriving from the server) >> by >> firing appropriate template rules. But I've no idea how this would >> look in >> detail. > > We just need a standard F & O function for this. OmniMark (the granddaddy event-based markup processing language of the 90s [actually a bit earlier ]) moved to being more generic event-based IIRC. I don't know how it worked out for them. Btw I think the OmniMark patent on "referents" will have lapsed by now. It should be considered for the XSLT3 streaming extensions, since it was a very viable technique, like an automatically managed "diversion" (was that the troff term?) Basically, in Omnimark you could have a string "hello %c world" and the %c acts like XSLTs <apply-templates />, processing the contents of the current element. But if you could also declare a referent which was a stream that didn't need to be closed before being used and was lazily evaluated. The serializer would divert output to temp files when it encountered an unclosed referent, and stall output until the referent had been processed. This allowed a single a pass to include information not yet found. I guess an xslt3 streaming mode is the nearest thing to a referent: however no decisions could be made based on the value of a referent: it is a placeholder not a function as such. Cheers Rick Jelliffe
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