Hi all, I´m considering on doing something like a "light-weight olap" server with lucene/solr. To achieve that I´d have to do some math operantions on facets. Is that possible? For example, my documents would be a purchase row, like (id, value, id_department, id_store, id_region ...). If I did a facet query for id_deparment the server would return me something like: deparment1: 500, deparment2: 400... Is it possible to get the sum, or avg or any math operation on the field value? Than the server would return me: deparment1: 1000000 (the sum of each value) .... Is it clear?
[]s Rossini