The current fix is to query ranges this way :
birthday:[1870/01/01 TO 1920/01/01]
population:[00000001 TO 00000050]
However, it is not user-friendly.
It would be great to be able to search that way :
birthday:[01/01/1870 TO 01/01/1920]
population:[1 TO 50]
Forum thread : http://forums.opensymphony.com/thread.jspa?forumID=37&threadID=79744
Thanks
With dates, there is now an option to specify more than one date format in the format tag. For example: format="yyyy-MM-dd;dd-MM-yyyy". The first one will be the format stored in the index, the second one (and any others) are formats allowed in the query string (including the first one, of course).