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From "Andrey Razumovsky (JIRA)" <>
Subject [jira] Updated: (CAY-1105) Expressions in-memory automatic type convertion
Date Wed, 10 Sep 2008 13:14:11 GMT


Andrey Razumovsky updated CAY-1105:

    Attachment: patch-test-Expr.txt

> Expressions in-memory automatic type convertion
> -----------------------------------------------
>                 Key: CAY-1105
>                 URL:
>             Project: Cayenne
>          Issue Type: Improvement
>          Components: Cayenne Core Library
>    Affects Versions: 3.0
>            Reporter: Andrey Razumovsky
>            Assignee: Andrus Adamchik
>         Attachments: patch-test-Expr.txt
> The root of the problem is difference in behavior of expressions on server (using queries)
and in-memory (using Expression.match(...). All DBMS I know support automatic type convertion,
i.e. if I write 
> SELECT * FROM a WHERE intProperty='1'
> everything will go OK.
> So, if I write an expression like [note quotes at 1!]
> ExpressionFactory.greaterExp("intProperty", "1")
> it will go normally with a query, but will result in an exception if I try to invoke
> I suggest to make the behavior similiar and therefore implement automatic type convertion
on expressions. I've submitted a patch with a number of tests, which all fail. I think the
must all succeed.
> Comments and other expression improvement suggestions are welcomed

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