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Alan, > The word diff scares me. Don't be scared... they can't hurt you.. > One obvious extension for XPattern is subsitutions. But it > implies streaming the file, which doesn't seem to make sense in > this case. What do you mean exactly by 'streaming the file'? The file is being streamed in that it is being transmitted in a stream (a tcp/ip link) and comes in that way line by line. > ... and if XQuery supports an update, > insert, delete syntax. Something like that is more along the > lines of what you need. Yes, but I don't know how it works on a dynamic document rather than a static one. The underlying document is changing all the time and the only real thing to rely upon are the stream of diffs. In practice, this is much faster than 'send the file again' which is probably the normal way. That style has it's own issues. I guess I would like a language that works on the underlying static (stored) document, but is able to cope with the events that arrive from the outside world for it. It would be like a language for dynamic document handling. This kind of modus operandi is a very common thing in the business world. Best Regards David ----------------------------------------------------------------
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