David Smiley created LUCENE-5735: ------------------------------------ Summary: Faceting for DateRangePrefixTree Key: LUCENE-5735 URL: https://issues.apache.org/jira/browse/LUCENE-5735 Project: Lucene - Core Issue Type: New Feature Components: modules/spatial Reporter: David Smiley Assignee: David Smiley
The newly added DateRangePrefixTree (DRPT) encodes terms in a fashion amenable to faceting by meaningful time buckets. The motivation for this feature is to efficiently populate a calendar bar chart or [heat-map|http://bl.ocks.org/mbostock/4063318]. It's not hard if you have date instances like many do but it's challenging for date ranges. Internally this is going to iterate over the terms using seek/next with TermsEnum as appropriate. It should be quite efficient; it won't need any special caches. I should be able to re-use SPT traversal code in AbstractVisitingPrefixTreeFilter. If this goes especially well; the underlying implementation will be re-usable for geospatial heat-map faceting. -- This message was sent by Atlassian JIRA (v6.2#6252) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org