: I think Solr should support syntax like "sort=title_sv asc locale:sv", : minimally including the language, but possibly also the country : component of the locale, e.g. "sort=title_de asc locale:de_CH" for Swiss : German.
I'm not sure how i feel about that syntax, but a fairly straight forward way to get Locale based sorting with Solr is to write a subclass of StrField that took in a "locale" init param and used it in the getSortField method. Then in yourschema each <filedType/> could declare what locale to use for sorting. that would work with Solr 1.2 without any modifications, but if someone wants to submit a patch we can make Solr "out of the box" by making similar changes to the FieldType base class that would be pretty cool. (one thing that might get tricky is making the new Locale option play nice with the sortMissingFirst and sortMissingLast options ... might need some creative SortComparators) -Hoss
