Hi, The params you have suggest you're planning to use SweetSpotSimilarity. There already is a factory you can use in Jira.
https://issues.apache.org/jira/browse/SOLR-1365 Cheers, > Hi, > > I'm trying to use a CustomSimilarityFactory and pass in per-field > options from the schema.xml, like so: > > <similarity class="org.ads.solr.CustomSimilarityFactory"> > <lst name="field_a"> > <int name="min">500</int> > <int name="max">10000</int> > <float name="steepness">0.5</float> > </lst> > <lst name="field_b"> > <int name="min">500</int> > <int name="max">20000</int> > <float name="steepness">0.5</float> > </lst> > </similarity> > > My problem is I am utterly failing to figure out how to parse this > nested option structure within my CustomSimilarityFactory class. I > know that the settings are available as a SolrParams object within the > getSimilarity() method. I'm convinced I need to convert to a NamedList > using params.toNamedList(), but my java fu is too feeble to code the > dang thing. The closest I seem to get is the top level as a NamedList > where the keys are "field_a" and "field_b", but then my values are > strings, e.g., "{min=500,max=10000,steepness=0.5}". > > Anyone who could dash off a quick example of how to do this? > > Thanks, > --jay
