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From Thomas Nielsen <Thomas.Niel...@Sun.COM>
Subject Re: derby & hibernate & type 'text'
Date Tue, 15 Apr 2008 06:45:59 GMT
Andy Rozman wrote:
> It seems that type text (which should be unlimited varchar) is 
> interpreted as CLOB(255). I don't know where this happens but my 
> application now fails... Is this Derby problem or Hibernate? I am using 
> latest of Derby ( and Hibernate 3.1.

Hi Andy,

Hibernate seems to map its 'text' type to a database clob, not a 
database varchar. This is Hibernates doing, not Derbys. See attached 
link to Hibernate "cheat sheet"[1].

You might be better off with using Hibernates 'string' type which maps 
to a database varchar type?

I'm not sure exactly why it fails using 'text' and a clob with derby, 
but I do know there are a few clob related fixes in the upcoming 10.4 

The release candidate of Derby 10.4 is now available[2], and the 
official release should be just around the corner. Maybe you could give 
the RC a quick spin to see if the problem is solved?


[1] http://ndpsoftware.com/HibernateMappingCheatSheet.html
[2] http://wiki.apache.org/db-derby/DerbyTenFourRelease  --> 
Thomas Nielsen

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