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Date: Tue, 28 May 2013 22:25:28 -0400
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Subject: Re: Difference between Group and Facet
From: Brendan Grainger <brendan.grainger@gmail.com>
To: java-user@lucene.apache.org
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Great, did it work?

By the way, If found this article:
http://blog.thetaphi.de/2012/02/is-your-indexreader-atomic-major.html very
helpful in understanding the difference between AtomicReaders and
CompositeReaders.

Brendan


On Tue, May 28, 2013 at 2:30 AM, raj <rajeshmohan.1979@gmail.com> wrote:

> Thanks a lot Elisabeth
>
>
> On Mon, May 27, 2013 at 7:43 PM, Elisabeth Adler
> <elisabeth.adler@gmail.com>wrote:
>
> > Hi,
> > I'm not sure what you mean with how to index a group. You basically index
> > all documents, and then group them for the results.
> > To stay on the books example: you index books including information about
> > the author. So each document in the index is a book. But in your result
> > list, you want to display authors. So you group by author.
> >
> > For the details about how to group, the package documentation (
> > http://lucene.apache.org/core/4_0_0-ALPHA/grouping/index.html) should
> > cover
> > what you need.
> > Best,
> > Elisabeth
> >
> > On 27 May 2013 14:13, raj <rajeshmohan.1979@gmail.com> wrote:
> >
> > > Hi,
> > >
> > > I wasnt able to find any guidelines on how to add a Group while
> indexing.
> > > There is a user guide and demo code for Facet which shows this. Can you
> > > please show how to add a Group while indexing?
> > >
> > > Thanks,
> > > Rajesh
> > >
> > >
> > > On Mon, May 27, 2013 at 3:55 PM, raj <rajeshmohan.1979@gmail.com>
> wrote:
> > >
> > > > Hi Elisabeth,
> > > >
> > > > Thanks. Let me go through the links
> > > >
> > > > Regards,
> > > > Rajesh
> > > >
> > > >
> > > > On Mon, May 27, 2013 at 3:09 PM, Elisabeth Adler <
> > > > elisabeth.adler@gmail.com> wrote:
> > > >
> > > >> Hi Rajesh,
> > > >> This entry explains it quite well:
> > > >>
> > > >>
> > >
> >
> http://stackoverflow.com/questions/8550818/whats-the-difference-between-grouping-and-facet-in-lucene-3-5
> > > >> Best,
> > > >> Elisabeth
> > > >>
> > > >> On 27 May 2013 11:16, raj <rajeshmohan.1979@gmail.com> wrote:
> > > >>
> > > >> > Hi,
> > > >> >
> > > >> > I was seeing that Lucene supports both Groups and Facets. But I
> was
> > > >> finding
> > > >> > it difficult to understand the difference between both.
> > > >> >
> > > >> > https://issues.apache.org/jira/browse/LUCENE-1421 - Says "Ability
> > to
> > > >> Group
> > > >> > search results by Field". So, is this by existing Fields that we
> add
> > > >> while
> > > >> > indexing or something different as in FacetFields in Facets?
> > > >> >
> > > >> >
> > > >> > Regards,
> > > >> > Rajesh
> > > >> >
> > > >>
> > > >
> > > >
> > >
> >
>


-- 
Brendan Grainger
www.kuripai.com

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