On Wed, 2012-07-18 at 20:30 +0200, Christopher Gross wrote: > When I do a query, the results that come through retain their original > case for this field, like: > doc 1 > keyword: Blah Blah Blah > doc 2 > keyword: Yadda Yadda Yadda > > But when I pull back facets, i get: > > blah blah blah (1) > yadda yadda yadda (1)
Yes. The results from your query are the stored values, while the results from your facets are the indexed ones. That's the way faceting works with Solr. Technically there is nothing wrong with writing a faceting system that uses the stored values. We did this some years back, but abandoned the idea. As far as I remember, it was a lot slower to initialize the internal structures this way. One could also do faceting fully at search time, by iterating all the documents and requesting the stored value for each of them directly from the index, but that would be very slow. > I was attempting to fix a sorting problem -- keyword "aaaa" would show > up after keyword "Zulu" due to the "index" sorting, so I thought that > I could lowercase it all to have it be in the same order. But now it > is all in lower case, and I'd like it to retain the original style. Currently the lowercase trick is the only solution for plain Solr and even that only works as long as your field holds only a-z letters. So no foreign names or such. Looking forward, one solution would be to specify a custom codec for the facet field, where the comparator used for sorting is backed by a Collator that sorts the terms directly, instead of using CollatorKeys. It would be a bit slower for index updates, but should do what you require. Unfortunately I am not aware of anyone who has created such a codex or even how easy it is to get it to work with Solr (4.0 alpha). We have experimented with a faceting approach that allows for custom ordering, but it sorts upon index open and thus has a fairly long start up time. Besides, it it not in a proper state for production: https://issues.apache.org/jira/browse/SOLR-2412 - Toke Eskildsen, State and University Library, Denmark
