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Hi,
> > I would like to inform you that we have just released a
> > package for XPath (version 1.0). The implementation is based
> > on the XPath W3C Recommendation available at:
> > http://www.w3.org/TR/1999/REC-xpath-19991116
> >
>
> Could you give some clues as to what this package offers that other Java
> XPath implementations don't?
>
There are some differences and Alexander will write more about them in
a while.
Our goal is to make some of the basic packages of our system available to
more
people, because we already have some request to do this.
> There's actually been surprisingly little academic work on XSLT and
> XPath implementation, and what there has been has been largely the sort
> of "I can write one too" exercise which in my view does not count as
> real research and should certainly not be supported by taxpayers' money.
Usually the decision for implementing a new engine (XPath, XSLT or other)
comes after a painful experience with somebody's implementations. Even
not free packages don't support all of the necessary functionality.
BTW, I think there are some works about optimizations of XPath queries and
such staff done by academics.
> Given that there are quite a few open source implementations, I think
> quite a good one-year research project would be to compare and contrast
> them, analyzing which optimization features appear to make the most
> significant contribution. Resist the temptation to write
> yet-another-processor yourself, and you could really add value by
> analysing the strengths and weaknesses of the work done by others.
Good idea.
With best regards,
Kiril
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Kiril Simov
BulTreeBank Project
Linguistic Modelling Laboratory, CLPP,
Bulgarian Academy of Sciences
Acad. G.Bonchev St. 25A
1113 Sofia, Bulgaria
E-mail: kivs@bultreebank.org
Web: http://www.bultreebank.org/
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