Good point. It might be worth a try =)
Niko 2013/7/3 Emmanuel Bernard <emman...@hibernate.org>: > It seems to me that for each geo facet, you need to execute a query > which is fast. So in my example, the query will be executed 4 times. One > for the regular query and 3 times with different radius retrieving the > count. In other words, you don't really need to compute the distance for > each point. > > Wouldn't that work? > > Emmanuel > > On Wed 2013-07-03 14:21, Nicolas Helleringer wrote: >> The difficulty in this is that unlike other facets counts those are to >> be dynamically computed. >> >> The current facet systems (either native Lucene or Hibernate ones) are >> using the Lucen Token reverse >> indexes performance to compute the facets on queries results that can >> be very large. >> >> This cannot be done here as the distance to the search center is dynamic. >> If you have a query with 10k result and you display only the first ten >> results as first page and to strengthen >> the search you want geo facets then you have to compute distance on >> all the 10k results to produce that. >> On the performance PoV this will fail. >> >> Niko >> >> >> 2013/7/3 Emmanuel Bernard <emman...@hibernate.org>: >> > I'm more interested in something like >> > >> > Within 10 kms (23) >> > Between 10 and 50 kms (45) >> > Above 50 kms (75) >> > >> > >> > On Wed 2013-07-03 11:24, Nicolas Helleringer wrote: >> >> Was is demonstrated here has nothing of a facet : these are only >> >> aggregates. >> >> >> >> <quote> >> >> GeoDistanceFacet results: >> >> ------------------------------------------------------------- >> >> Distance from origin: 0.0 >> >> Distance to requested: 1000.0 >> >> Number of results: 29 >> >> Minimum distance: 0.0 >> >> Maximum distance: 899.5358131385483 >> >> Sum of distances: 17320.209230844222 >> >> Mean distance: 597.2485941670421 >> >> </quote> >> >> >> >> I see nothing we cannot do. >> >> >> >> Niko >> >> >> >> 2013/7/3 Emmanuel Bernard <emman...@hibernate.org>: >> >> > This morning I was reading >> >> > http://hashmade.fr/elastic-search-geo-distance-search-with-sorted-and-faceted-results-using-java-native-api/ >> >> > And the code https://github.com/jsebrien/elastic-search-tests >> >> > >> >> > I have to say that we compare quite well in number of lines of code and >> >> > readability. Considering that ElasticSearch is considered the easy tool >> >> > / API in the search space, I did not expect that. >> >> > >> >> > We could do better on the facet side, I particular to retrieve the >> >> > facet data. >> >> > >> >> > By the way, they offer a way to facet by spatial distance, Hardy, >> >> > Nicolas, how hard would it be to do the same? >> >> > >> >> > Emmanuel >> >> > _______________________________________________ >> >> > hibernate-dev mailing list >> >> > hibernate-dev@lists.jboss.org >> >> > https://lists.jboss.org/mailman/listinfo/hibernate-dev _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
