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From Andrus Adamchik <and...@objectstyle.org>
Subject Re: sql template and column types...
Date Sat, 04 Aug 2007 20:44:24 GMT
Yes, #result directive is rather limited. I posted my thoughts on how  
to improve it here:

    https://issues.apache.org/cayenne/browse/CAY-813

In the meantime in 3.0 I've added an unofficial JDBC type parameter  
#5 to the #result directive used by Cayenne internally (in addition  
to another unofficial parameter #4 which is a column label).  
"Unofficial" means that although it works now, we'll throw these two  
parameters away once a better alternative is implemented without any  
backwards compatibility support.

Andrus



On Aug 4, 2007, at 11:32 PM, Robert Zeigler wrote:
> Hm... I noticed that SQLTemplate doesn't even set the jdbc type of  
> it's column descriptors... (at least, not in 2.x cayenne...)
> Should it? There's probably not enough information in #result to  
> guess the type, but maybe a little later in the process,
> those value could be initialized from the query metadata? Just  
> wondering, since it throws a kink into extended type conversion.
> (For example, the Enum type conversion fails when using sqltemplate  
> and numeric-based columns because the type
> is Types.NULL (0), and so it tries do to an Enum.valueOf("string")  
> call, which will fail since the "string" is a number...
>
> Certainly, the individual types can be adjusted to examine the  
> result set metadata, rather than the type argument passed to it.
> But that seems like the wrong place to fix this. Thoughts?
>
> Robert
>


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