Consider writing a custom sort method or a custom function that you use for sorting. Be _very_ careful that anything you do here is very efficient, it'll be called a _lot_.
Best Erick On Mon, Apr 30, 2012 at 2:10 AM, solr user <solr.user...@gmail.com> wrote: > Hi, > > Any suggestions, > > Am I trying to do too much with solr? Is there any other search engine, > which should be used here? > > I am looking into solr codebase and planning to modify QueryComponent. Will > this be the right approach? > > Regards, > > Shivam > > On Fri, Apr 27, 2012 at 10:48 AM, solr user <solr.user...@gmail.com> wrote: > >> Jan, >> >> Thanks for the response, >> >> I though of using it, but it will be suboptimal to do this in the scenario >> I have. I guess I have to explain the scenario better, let me try it again:- >> >> 1. I have importance based buckets in the system, this is implemented >> using a variable named bucket_count having integer values 0,1,2,3, and I >> have to show results in order of bucket_count i.e. results from 0th bucket >> at top, then results from 1st bucket and so on. That is done by doing a asc >> sort on this variable. >> 2. Now *within these buckets* I need to ensure that 1st listing of every >> advertiser comes at top, then 2nd listing from every advertiser and so on. >> >> Now if I go with the grouping on advertiserId and and use the >> group.offset, then probably I also need to do additive filtering on >> bucket_count. To explain it better pseudo algorithm will be like >> >> 1. query solr with group.offset 0 and bucket count 0 >> 2. if results more than zero in step1 then increase group offset and >> follow step 1 again >> 3. else increase bucket count with group offset zero and start from step 1. >> >> With this logic in the worst case I need to query solr (number of >> importance buckets)*(max number of listings by an advertiser). Which could >> be very high number of solr queries for a single user query. Please suggest >> if I can do this with more optimal way. I am also open to do modifications >> in solr/lucene code if needed. >> >> Regards, >> BC Rathore >> >> >> >> On Fri, Apr 27, 2012 at 4:09 AM, Jan Høydahl <jan....@cominvent.com>wrote: >> >>> 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 >>> >>> >>
