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From: Ian Lea <ian.lea@gmail.com>
Date: Wed, 18 Jul 2012 09:34:45 +0100
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 <CAEY5pxWhy-jtMrRwJrf2OEjbB4ie8neO6P1dk3QGD8hgnd2shA@mail.gmail.com>
Subject: Re: Multiple sort field
To: java-user@lucene.apache.org
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> Any thoughts on this?

Patience ...

> Is it good to use multiple sort fields?

Absolutely, if that's what you need.  On the other hand, if you don't
need it then it's a bad idea.

> Using sort on docid will consume any memory?

Don't know.  Certainly won't use less than not sorting this way.

> Is there any other way out to acheive this.

If you could get a full timestamp you could index it as a NumericField
and sort on that.  Or you could add some value to the existing
timestamp to make each one unique.  Probably other ways too but that's
all I can think of right now.


--
Ian.


On Wed, Jul 18, 2012 at 6:34 AM, Ganesh <emailgane@yahoo.co.in> wrote:
> Any thoughts on this?
>
> Regards
> Ganesh
>
> ----- Original Message -----
> From: "Ganesh" <emailgane@yahoo.co.in>
> To: <java-user@lucene.apache.org>
> Sent: Tuesday, July 17, 2012 4:23 PM
> Subject: [Bulk] Multiple sort field
>
>
> Hello all,
>
> I have more than one record having same time stamp. When i sort by date t=
ime in decending order, the set of records which have same time stamp are d=
isplayed in the order of insertion. Basically it is displayed with asscendi=
ng order of docid. But i want the reverse of that.
>
> Consider the below set of records.
> record_1  201207170101
> record_2  201207170101
> record_3  201207170102
> record_4  201207170102
>
> After search, it displays the results in below order
> record_3  201207170102
> record_4  201207170102
> record_1  201207170101
> record_2  201207170101
>
> But i want, sort on date time and again sort on docid in reverse order.
> record_4  201207170102
> record_3  201207170102
> record_2  201207170101
> record_1  201207170101
>
> Is it good to use multiple sort fields? Using sort on docid will consume =
any memory? Is there any other way out to acheive this.
>
> Regards
> Ganesh
>
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