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From "John Huss (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAY-1987) Widen types before performing in-memory evaluation of qualifiers using j.l.Number subclasses
Date Mon, 09 Feb 2015 21:01:35 GMT
John Huss created CAY-1987:
------------------------------

             Summary: Widen types before performing in-memory evaluation of qualifiers using
j.l.Number subclasses
                 Key: CAY-1987
                 URL: https://issues.apache.org/jira/browse/CAY-1987
             Project: Cayenne
          Issue Type: Improvement
          Components: Core Library
    Affects Versions: 4.0.M2
         Environment: trunk
            Reporter: John Huss
            Priority: Minor


There is a difference in the behavior of Expressions evaluated in memory versus by the database
when comparing attributes with a type like java.lang.Short with a literal of type java.lang.Integer.
 In memory Short(1) != Integer(1), but they are equal in the database.  Using a less strict
comparison in memory would be preferable. 

I figured there would be an open source implementation of this somewhere that calculates the
widest type and compares the two values, but I couldn't find one.  I imagine you could just
call number.doubleValue() and compare that, but that seems sketchy.  

If you think this is worth doing I could try writing an implementation.



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