search result sorting-ccs

[kjdon]

Cross collection search. If the two collections have sortmeta used to return search results eg in Date order, can we keep using this when cross collection searching? ie turn off the sorting by rank.

I guess it would be hard to merge the two lists of documents as we don't have access to the metadata used when sorting, but maybe we can just turn off the ranking and return the top 20 from each collection?

Or they results could be grouped by collection, then sorted inside the group?

If you use Lucene is it possible to do something better?

Can you do cross coll search with Lucene?