It looks like things have changed a bit since this subject was last brought up here. I see that there are support in Solr/Lucene for indexing payload data (DelimitedPayloadTokenFilterFactory and DelimitedPayloadTokenFilter). Overriding the Similarity class is straight forward. So the last piece of the puzzle is to use a BoostingTermQuery when searching. I think all I need to do is to subclass Solr's LuceneQParserPlugin uses SolrQueryParser under the cover. I think all I need to do is to write my own query parser plugin that uses a custom query parser, with the only difference being in the getFieldQuery() method where a BoostingTermQuery is used instead of a TermQuery.
Am I on the right track? Has anyone done something like this already? Since Solr already has indexing support for payload, I was hoping that query support is already in the works if not available already. If not, I am willing to contribute but will probably need some guidance since my knowledge in Solr query parser is weak. Bill
