[jira] [Updated] (CAY-1987) Widen types before performing in-memory evaluation of qualifiers using j.l.Number subclasses

["John Huss (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAY-1987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

John Huss updated CAY-1987:
---------------------------
    Attachment: 0001-CAY-1987-Widen-types-before-performing-in-memory-eva.patch

Patch attached with unit tests

> 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
>         Attachments: 0001-CAY-1987-Widen-types-before-performing-in-memory-eva.patch
>
>
> 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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