Hey, Here's a blog I wrote a couple years ago about using facet associations: http://shaierera.blogspot.com/2013/01/facet-associations.html. Note that the examples in the blog were written against a very old Lucene version (4.7 maybe). We have a couple of demo files that are maintained with the code changes here https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;a=tree;f=lucene/demo/src/java/org/apache/lucene/demo/facet;h=41085e3aaa1d4d0697a5ef5d9853a093c1600ca6;hb=HEAD. Check them out, especially this one: https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;a=blob;f=lucene/demo/src/java/org/apache/lucene/demo/facet/AssociationsFacetsExample.java;h=3e2737d0c8f02d12e4fdb76f97891c8593ef5fbc;hb=HEAD
Hope this helps! Shai On Tue, Sep 27, 2016 at 7:20 AM Kumaran Ramasubramanian <kums....@gmail.com> wrote: > Hi mike, > > Thanks for the clarification. Any example about difference in using flat vs > hierarchical facets? Any demo or sample page? > > In a previous thread yesterday ( Faceting: Taxonomy index Vs > SortedSetDocValues ), there is a point like > > "tried to achieve multilevel (hierarchical) categorization using > SortedSetDocValues and got it simply by changing the query and opening the > IndexReader for each level of query using SortedSetDocValuesReaderState. " > > Is it possible easily? > > - > Kumaran R > > On Sep 27, 2016 9:38 AM, "Michael McCandless" <luc...@mikemccandless.com> > wrote: > > > > Weighted facets is the ability to associate a float value with each > > facet label you index, and at search time to aggregate those floats. > > See e.g. FloatAssociationFacetField. > > > > "other features" refers to hierarchical facets, which > > SortedSetDocValuesFacetField does not support (just flat facets) > > though this is possible to fix, I think (patches welcome!). > > > > Mike McCandless > > > > http://blog.mikemccandless.com > > > > On Mon, Sep 26, 2016 at 5:24 PM, Kumaran Ramasubramanian > > <kums....@gmail.com> wrote: > > > > > > > > > Hi All, > > > > > > i want to know the list of features which can be used by applications > > > using facet module of lucene. > > > > > > > https://issues.apache.org/jira/browse/LUCENE-4795?focusedCommentId=13599687 > > > > > > I ask because it seems that the only thing that we get from this > SortedSet > > >> approach is not having to maintain a sidecar index (which for some > reason > > >> freaks everybody), and we even lose performance. Plus, I don't see how > we > > >> can support other facet features with it. > > > > > > > > > on the other hand SortedSet doesn't have these problems. maybe it > doesnt > > >> support weighted facets or other features, but its a nice option. I > > >> personally don't think its the end of the world if Mike's patch doesnt > > >> support all the features of the faceting module initially or even > ever. > > > > > > > > > > > > > > > what > > > is meant by > > > weighted facets > > > ? what are > > > othe > > > r > > > facets > > > features ? > > > > > > > > > -- > > > Kumaran R > > > >
