Do you think we could and should support the ANSI SQL style periods and temporal operators (overlaps, during, before, after, etc.) in a portable way?
from Contract c where [c.effectiveStartDate, c.effectiveEndDate] overlaps (:start, :end]
(Unfortunately, Java has no Period or Interval class that we could create a standard Hibernate Type for.)
You might find http://joda-time.sourceforge.net/ usefull for this. It provides Period and Interval.
--- Mario
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