On Tue, Jun 9, 2009 at 10:19 PM, Amit Nithian <anith...@gmail.com> wrote:

> I take it by the deafening silence that this is not possible? :-)
>

Anything is possible :)

However, it might be easier to upgrade to 1.4 instead.


>
> On Mon, Jun 8, 2009 at 11:34 AM, Amit Nithian <anith...@gmail.com> wrote:
>
> > Hi,
> > I am still using Solr 1.2 with the Lucene 2.2 that came with that version
> > of Solr. I am interested in taking advantage of the trie filtering to
> > alleviate some performance problems and was wondering how back-portable
> > these patches are?
> >
>

Trie is a new functionality. It does have a few dependencies on new Lucene
APIs (TokenStream/TermAttribute etc.). On the Solr side I think it'd be
easier.


>
> > I am also trying to understand how the Trie algorithm cuts down the
> number
> > of term queries compared to a normal range query. I was at the recent Bay
> > Area lucene/solr meetup where this was covered but missed some of the
> > details.
> >
>

See the javadocs. It has the link to the paper in which it is described in
more detail.

http://hudson.zones.apache.org/hudson/job/Lucene-trunk/javadoc/contrib-queries/org/apache/lucene/search/trie/package-summary.html
-- 
Regards,
Shalin Shekhar Mangar.

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