xml-dev - Re: Distributed DOM implementations

[Jerome McDonough <jmcdonou@library.berkeley.edu>]

At 04:20 PM 1/27/1999 -0800, Pavel Velikhov wrote:
> I have build a prototype of an XML database system, but I have found
>out that
>the XML parser is the chief performance bottleneck (DOM is my "storage
>model").
>I.e. to query a document I have to parse all of it, even though the
>query may
>concern only a tiny fragment of it. Instead, if the document is
>pre-parsed and
>stored in some efficient representation (either main memory tree or some
>hierarchial
>representation on disk) and is available via DOM commands, I would save
>a lot of
>time.
>

This is very similar to the approach we're taking to distributing archival
documents in the Making of America II project at Berkeley; we pre-parse
the documents and extract information from them using DOM into Java objects
which are then serialized and written to disk.  The objects provide a somewhat
higher level interface for delivering information to clients that want
to interact with the objects.  It does indeed make things a good deal
faster.





Jerome McDonough -- jmcdonou@library.Berkeley.EDU  |  (......)
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Berkeley, CA 94720-6000    (510) 642-5168          |  \  <>  /
"Well, it looks easy enough...."                   |   \ -- /  SGNORMPF!!!
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