Hi Eugene, > - ability to iterate over all documents, returned in search, as Lucene does > provide within a HitCollector instance. We would need to extract and > aggregate various fields, stored in index, to group results and aggregate > them > in some way. > .... > Also I did not find any way in the tutorial to access the search results with > all fields to be processed by our application. > http://www.lucidimagination.com/Community/Hear-from-the-Experts/Articles/Faceted-Search-Solr Check out Faceted Search, probably you can achieve your goal by using Facet Component
There's also Field Collapsing patch http://wiki.apache.org/solr/FieldCollapsing Alex