[ https://issues.apache.org/jira/browse/LUCENE-4869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
David Smiley updated LUCENE-4869: --------------------------------- Summary: Optimize IsWithin spatial RPT to use a point cache for false-positive removal (was: Optimize IsWithin spatial RPT to use a point cache for false-positve removal) > Optimize IsWithin spatial RPT to use a point cache for false-positive removal > ----------------------------------------------------------------------------- > > Key: LUCENE-4869 > URL: https://issues.apache.org/jira/browse/LUCENE-4869 > Project: Lucene - Core > Issue Type: Improvement > Components: modules/spatial > Reporter: David Smiley > > LUCENE-4644 implemented the "IsWithin" predicate for a RecursivePrefixTree > based field. It's slow since it looks across the whole world to ensure it > doesn't match docs with data anywhere outside the query shape. It can be > configured to only look outside the query shape using a very small buffer > distance, and that will filter out documents spanning the query shape > boundary, but not indexed shapes comprised of multiple disjoint parts. The > solution proposed here is to index a point per disjoint part in such a way > that it can be easily retrieved (e.g. DocValues) and then a post-process of > WithinPrefixTreeFilter would remove false-positives. > This isn't particularly hard/advanced but it requires some advances in some > APIs that aren't quite there yet. Spatial4j's ShapeCollection (aka WKT > GeometryCollection or Multi*) needs to get released, it needs a vertex > iterator. There needs to be code to read and write a set of points to a > BinaryDocValues field (1/doc). And finally of course WithinPrefixTreeFilter > needs to have a mode in which it uses the smallest buffer and then in the end > checks the DocValues to remove false-postivies. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org