Re: Searching huge xml-documents

Could you post the URL, if there is one. I would be very interested in being
able to store and query a DOM on secondary storage.

Rick Geimer
National Semiconductor
rick.geimer@xxxxxxx

Ed Nixon wrote:

> There was a posting on Robin Cover's XML News site last week or the week
> before about an implementation of XQL from folks in Darmstadt. They have
> implemented an 'compliation' mechanism that takes the DOM tree, indexes it
> and writes to disk. At that point it's possible to run XQL against this
> file, either in memory or cached to disk.
>
> Perhaps this would be worth a look?                             ...edN
>
> > -----Original Message-----
> > From: owner-xsl-list@xxxxxxxxxxxxxxxx
> > [mailto:owner-xsl-list@xxxxxxxxxxxxxxxx]On Behalf Of Thomas Weholt
> > Sent: Wednesday, April 14, 1999 6:54 AM
> > To: xsl-list@xxxxxxxxxxxxxxxx
> > Subject: Searching huge xml-documents
> >
> >
> > hi,
> >
> > I was thinking using XML as fileformat for a CD database. Each cd can
> > containg approx. 20000 files, like clipart or source code, and
> > I need a fast ( I don`t mind waiting for 5-10 secs. to search
> > 300-500 cds (
> > max 20000 entries pr. cd )) method to pick out items
> > according to a given
> > index.
> >
> > Something like
> >
> > <cd_doc>
> >       ... info about the cd ...
> >       <entries>
> >         <entry no="1" path="/cdrom/stugg/long path/more
> > text/python_stuff.tar.gz" ... more info .../>
> >         ... 199999 or so more entries
> >       </entries>
> > </cd_doc>
> >
> > I want to search by entry no or sort by any other attribute. Perhaps
> > genererate an word-index to speed-up the process. The reason
> > I want to use
> > XML is that I use java, perl, python and other programming
> > languages on
> > several platforms. XML is readable for humans and easy to put
> > on the web.
> > My main consern is speed. Storagespace is not an issue. How
> > fast is XSL?
> > How fast is available Java packages? Any thoughts?
> >
> > I don`t even know if this is "doable", like generating
> > indexes etc., but
> > would like to use xml at least for learning purposes.
> >
> > As an experiment I created a xml-document with the structure above,
> > containing 90000 entries and searched for a given entry no,
> > using Xt and a
> > simple xsl-stylesheet. The result was a little slow. Has
> > anybody tested the
> > IBM java tools for searching, not generating html, but just
> > looking up a
> > given element in a huge document, the result ( in time ) would be
> > interesting. Xt probably has some overhead due to the fact
> > it`s written in
> > java -> starting VM and so on. If a java-app is allready
> > running, how fast
> > can I locate several elements in a given xml-document?
> >
> >
> >
> >
> >
> > ----------------------------------------------
> >               Thomas Weholt
> >        eMail : weholt@xxxxxxxxxxxxxx
> >      HTTP://www.linuxfreak.com/~weholt
> >         Phone : +47 - 92 09 59 68
> > ----------------------------------------------
> >
> >
> >
> >  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> >
>
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