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Generative XPath is released

Generative XPath (0.9.1) is an XPath 1.0 processor that can be adapted to different hierarchical memory structures and different programming languages. Customizing Generative XPath to a specific environment is several magnitudes of order easier than implementing XPath from scratch.

Generative XPath will be announced at XML Prague 2007: http://www.xmlprague.cz/

Details:

http://xmlhack.ru/protva/generative-xpath.pdf
http://xmlhack.ru/protva/xquery/

Home page:

http://xsieve.sourceforge.net/gxpath/

This entry was posted by olpa on Sunday, June 10th, 2007 at 6:42 pm and is filed under Generative XML, science, XSieve. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “Generative XPath is released”

  1. Bacek Says:
    June 10th, 2007 at 6:56 pm

    (Hey, http://xsieve.sourceforge.net/gxpath/ is dead.)

    Do you have any benchmarks for your XPath implementation?

  2. olpa Says:
    June 10th, 2007 at 7:43 pm

    At the moment, not so good. The style of the compiled code is “good for optimizer”, but the optimizator isn’t written (yet).

    The worst, unhonest case. Generative XPath on top of a few layers vs native libxml2 XPath: 30 times slower.

    Bad case: “//a[b]” vs manually written (a variant of this): 20 times slower.

    Normal: vs SXPath: 2 times slower.

    But I expect that after even trivial optimizations, I’ll beat libxml2.

    > http://xsieve.sourceforge.net/gxpath/ is dead
    Under construction.

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