There are some approaches outlined here that might be of interest:
http://wiki.apache.org/solr/HierarchicalFaceting
On Jan 24, 2010, at 2:54 AM, Andy wrote:
I'd like to provide a hierarchical faceting functionality.
An example would be location drill down such as USA -> New Y
I'd like to provide a hierarchical faceting functionality.
An example would be location drill down such as USA -> New York -> New York
City -> SoHo
The number of levels can be arbitrary. One way to handle this could be to use a
special character as separator, store values such as "USA|New York|
