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From Jakob Braeuchi <jbraeu...@gmx.ch>
Subject Re: Identity.realClass set to abstract class?!
Date Mon, 08 Sep 2003 19:55:04 GMT
hi olli,

oliver.matz@ppi.de wrote:

>Hello Jakob,
>
>  
>
>>-----Original Message-----
>>From: Jakob Braeuchi [mailto:jbraeuchi@gmx.ch]
>>
>>i fixed this in Collection- and ReferencePrefetcher.
>>    
>>
>
>I feel a bit uncomfortable with it, because it
>might mean a dramatic loss of performance in some cases,
>as I mentioned in my response to Armin (this thread):
>  
>
i'm aware of this problem. but if the creation of the identity was 
clearly wrong (as written by thomas) then we need to do something.

>  
>
>>Assume, for example, that there is one single top-level
>>class that all other persistence-capable classes
>>extend.  Then, with [this] change, resolving a reference will 
>>result in a search through all tables.
>>    
>>
>
>Don't you agree?
>
>For the future, I would like to propose junit tests
>that verify that the number of generated SQL statements
>has not increased.  We have such tests in our project,
>using p6spy with a test-specific logger to count 
>SQL statements.
>
this is a good idea.

jakob

>
>Olli
>
>
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>  
>


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