[SOLR-1023] StatsComponent should support dates (and other non-numeric fields)

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4
• Fix Version/s: 3.5, 4.0-ALPHA

Environment

Mac OS 10.5, java version "1.5.0_16"

• Assignee: Ryan McKinley
• Reporter: Peter Wolanin
• Created: 18/Feb/09 16:12
• Updated: 03/Jan/12 19:15
• Resolved: 15/Nov/11 09:13

Description

Currently, the StatsComponent only supports single-value numeric fields:

http://wiki.apache.org/solr/StatsComponent

trying to use it with a date field I get an exception like: java.lang.NumberFormatException: For input string: "2009-01-27T20:04:04Z"

trying to use it with a string I get an error 400 "Stats are valid for single valued numeric values."

For constructing date facets it would be very useful to be able to get the minimum and maximum date from a DateField within a set of documents. In general, it could be useful to get the minimum and maximum from any field type that can be compared, though that's of less importance.

Issue Links

• breaks: SOLR-2976 stats.facet no longer works on single valued trie fields that don't use precision step