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From Jan Høydahl <jan....@cominvent.com>
Subject Re: Using Customized sorting in Solr
Date Thu, 26 Apr 2012 22:39:17 GMT
Hi,

How about trying grouping with paging?
First you do 
group=true&group.field=advertiserId&group.limit=1&group.offset=0&group.main=true&sort=something&group.sort=how-much-paid
desc

That gives you one listing per advertiser, sorted the way you like.
Then to grab the next batch of ads, you go group.offset=1 etc etc.

--
Jan Høydahl, search solution architect
Cominvent AS - www.cominvent.com
Solr Training - www.solrtraining.com

On 26. apr. 2012, at 08:10, solr user wrote:

> Hi,
> 
> We are planning to move the search of one of our listing based portal to
> solr/lucene search server from sphinx search server. But we are facing a
> challenge is porting customized sorting being used in our portal. We only
> have last 60 days of data live.The algorithm is as follows:-
> 
>   1.  Put all listings into 54 buckets – (Date bucket for 60 days)  i.e.
>   buckets of 7day, 1 day, 1 day……
>   2.  For each date bucket we make 2 buckets –(Paid / free bucket)
>   3.  For each paid / free bucket cycle the advertisers on uniqueness basis
> 
>                  i.e. inside a bucket the ordering should be 1st listing
> of each advertiser, 2nd listing of each advertiser and so on
>                  in other words within a *sub-bucket* second listing of an
> advertiser will be displayed only after first listing of all advertiser has
> been displayed.
> 
> For taking care of point 1 and 2 we have created a field named bucket_index
> at the time of indexing the data and get the results sorted by this index,
> but we are not able to find a way to create a sort field at index time or
> think of a sort function for the point no 3.  Please suggest if there is a
> way to do so in solr.
> 
> Tia,
> 
> BC Rathore


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