Gunnar Morling Actually, it seems the case of dates has been handled after you created this ticket as part of HSEARCH-2246 Closed .

Regarding booleans, I'm not sure we can do much for now given that we use the Lucene APIs under the hood, and Lucene has no such concept as booleans (you can't create a "BooleanTermQuery", you have to create a "TermQuery", and this only accepts a String term).

One thing we can do, though, is disabling analysis by default for boolean fields. It does not seem necessary, and may be harmful with exotic default analyzers.
I'll add test cases to ElasticSearchDSLIT and see what I can do about boolean fields.