limit rows by field

Hi, for a preview of results, I need to display up to 3 documents per category. Is it possible to limit the number of rows of solr response by field-values? What I mean is: rows: 9 -(sub)rows of "field:cat1" : 3 -(sub)rows of "field:cat2" : 3 -(sub)rows of "field:cat3" : 3 If not, is there a wor

CSV import & date modifying.

Hi, when posting a CSV-file via curl to Solr, I´d like to convert a row with the date format „30.12.2009“ (dd.mm.) into the date format accepted by Solr. Is this possible? Thanks for help Felix.