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From "John Wang" <john.w...@gmail.com>
Subject Re: user index sigature
Date Tue, 25 Sep 2007 23:55:12 GMT
what do you think about the overhead of opening the IndexReader just to find
out the version?
e.g. if you have a large index, say 10M docs, just opening it to find out
the version, how big is the overhead?

-John

On 9/25/07, John Wang <john.wang@gmail.com> wrote:
>
> cool, thanks!
>
> On 9/25/07, Erick Erickson <erickerickson@gmail.com> wrote:
> >
> > Sure, just index a *very special* document with one field that is
> > shared by no other documents in your index. Put your
> > custom signature in there.
> >
> > You can even get it very efficiently with TermEnum if you
> > don't want to search for it, but searching would also be very
> > fast. Put, say, two fields in the doc. "field_version" and "value".
> > Always set the *field* field_version to the string "version". Now,
> > search
> > for field_version:version, get the one and only resulting doc
> > and get it's value field.
> >
> > Best
> > Erick
> >
> > On 9/25/07, John Wang <john.wang@gmail.com> wrote:
> > >
> > > Hi:
> > >
> > >    Is there a way to added custom signature data to a lucene index,
> > e.gdata
> > > version etc?
> > >
> > > Thanks
> > >
> > > -John
> > >
> >
>
>

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