Hi The product function query needs a valuesource, not the pseudo score field.
You probably need something like (with Solr 4.0): q={!lucene}*:*&sort=product(query($q),2) desc,score desc&fl=score,_score_:product(query($q),2),[explain] Cheers, Dan On Tue, Nov 20, 2012 at 2:29 AM, Floyd Wu <floyd...@gmail.com> wrote: > Hi there, > > Before ExternalFielField introduced, change document boost value to achieve > custom ranking. My client app will update each boost value for documents > daily and seem to worked fine. > Actual ranking could be predicted based on boost value. (value is > calculated based on click, recency, and rating ). > > I'm now try to use ExternalFileField to do some ranking, after some test, I > did not get my expectation. > > I'm doing a sort like this > > sort=product(score,abs(rankingField))+desc > But the query result ranking won't change anyway. > > The external file as following > doc1=3 > doc2=5 > doc3=9 > > The original score get from Solr result as fllowing > doc1=41.042 > doc2=10.1256 > doc3=8.2135 > > Expected ranking > doc1 > doc3 > doc2 > > What wrong in my test, please kindly help on this. > > Floyd >