Hi Parth, Since Lucene 4.7 spatial, there is a “SerializedDVStrategy” for serialized geometries. It’s used as a second-pass after RPT (or perhaps BBoxStrategy). There was a presentation at FOSS4G about it (I was there and helped with this one too): http://vimeo.com/106843184 There’s a small code sample in there. It’s pretty easy to use.
This article I wrote is also relevant: http://opensourceconnections.com/blog/2014/04/11/indexing-polygons-in-lucene-with-accuracy/ I’m hoping to have time after the new year to get to the optimization referenced at the end, but who knows. ~ David Smiley Freelance Apache Lucene/Solr Search Consultant/Developer http://www.linkedin.com/in/davidwsmiley On Thu, Oct 2, 2014 at 12:47 PM, parth_n <nagar...@asu.edu> wrote: > Hi everyone, > > I have a Lucene Spatial code where I query (bounding box) the given data. > Does Lucene have a primary and a secondary filter (like MS SQL or PostGIS) > (where the primary filter returns the regions in the index to be looked at, > and the secondary filter removes the false positives in these regions)? > > I am trying to query Lucene such that only the primary filter results are > returned. With this (since false positives are sometimes okay for faster > query processing), I can avoid further I/O of accessing the data. > > Currently, I have the following code (which was written with the help of > David Smiley - > > http://lucene.472066.n3.nabble.com/Lucene-Spatial-Question-How-to-efficiently-retrieve-all-results-within-a-bounding-box-td4140616.html > ): > > SpatialArgs args = new SpatialArgs(SpatialOperation.Intersects, > ctx.makeRectangle(minX, maxX, minY, maxY)); > Collector collector = new SimpleCollector(); > searcher.search(strategy.makeQuery(args), collector); > > Any reply is much appreciated! > > Thanks, > Parth > > > > -- > View this message in context: > http://lucene.472066.n3.nabble.com/Lucene-Spatial-Question-Is-there-a-primary-and-a-secondary-filter-tp4162357.html > Sent from the Lucene - Java Users mailing list archive at Nabble.com. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
