[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Streaming XML (WAS: More on taming SAX (was Re: [xm
> Do I have to say anything more !? > > We are 30 years after Ted Codd, and many, many billions dollars > market later. I find it really strange that I need to argue > in favor of > the > declarativity in 2004, almost 2005. As always, it's horses for courses. On the Saxon site I publish a Java application (DTDGenerator) that given an instance document, generates a DTD. The current version of the application is written to use SAX, working in a serial pass through the instance. It was rewritten that way for a project where we needed to discover the structure of a client's 50 Gbyte instance document. I don't believe there is an XSLT or XQuery implementation that could do this job, and if there was, the code would probably be no simpler (the Java version is 336 non-comment lines). One of the reasons is that if this was written in a functional, declarative style, it would be structured according to the structure of the output, not the structure of the input. The code for generating each portion of the output would examine large parts of the input. Inverting this program to perform a single scan of the input might be possible, but it would certainly be pretty hard. We have more than one tool in our collective kitbag, and they all have a place. Michael Kay http://www.saxonica.com/
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