Solr has a lot of support to do faceted browsing, but one must currently write a custom query handler to implement the faceting logic.
The support includes: - custom query handlers: - the ability to return more data than just a list of documents - a filter cache with autowarming, for fast access to the filter for each facet - more memory efficient and faster intersecting filter representations The part I want in the future is simple faceted browsing without having to write any plugins or Java code.. so we need to come up with a syntax to represent the desired faceting operations, and then implement that syntax in the standard request handler. To implement a custom query handler, you need to implement SolrRequestHandler http://incubator.apache.org/solr/docs/api/org/apache/solr/request/SolrRequestHandler.html and register it in solrconfig.xml -Yonik On 3/29/06, Erik Hatcher <[EMAIL PROTECTED]> wrote: > I saw Yonik mentioned faceted browsing as something coming in the > future of Solr, but I had thought it was one of the initial features > from seeing this announcement ages ago: > > <http://www.nabble.com/Announcement%3A-Lucene-powering-CNET.com- > Product-Category-Listings-t266441.html#a748420> > > If facets are part of the current Solr codebase, how are they > configured and returned in the response? > > If they aren't currently possible with Solr, what would it take to > implement it? > > I'm still, obviously, just scratching the surface of Solr as I > evaluate it for replacing my custom XML-RPC based search server which > does rudimentary facets using Filters and BitSet operations. > > By faceted browsing, a Query is used to search, Hits are returned, > but also based on a subset of the fields (indexed, untokenized > fields) the number of documents in each of these "facet" fields is > returned as well to show counts by each facet. > > Thanks, > Erik >
