Hi, I’ve been using CoveringQuery to specify a minimum number of queries that need to match for a document to match overall, where we use the constructor:
public CoveringQuery(Collection<Query> queries, LongValuesSource minimumNumberMatch) ( https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;a=blob;f=lucene/sandbox/src/java/org/apache/lucene/search/CoveringQuery.java ) The second argument LogValuesSource is the name of a field which specifies how many of the queries must match. I think it would be a useful feature to have an alternative constructor which allows you to specify a multiValued field, for which the length of the field (i.e. the number of terms in the MV field) is used as the minimumNumberMatch instead. The implementation should be fairly simple, however I don’t know my way around the Lucene APIs well enough to replace LongValuesSource with the equivalent multi-valued length. I’d be grateful for advice on whether this is a worthwhile feature, and some advice on how I could write such a constructor. If people are happy then I will submit a JIRA. Thanks, Tristan
