The SQL spec allows for the definition of "domains" or types. These are based on pre-existing (built-in) DB types like varchar.

It seems the middlegen tool does not read these -- or perhaps it is a gap in my postgresql jdbc driver. Or maybe middlegen gets this info but the hibernate plug in ignores it.

Anyway, generated hibernate xml mapping files do not include information about DOMAIN objects -- all such columns get mapped to simple "object" type.

== Ezra E.

Middlegen core supplies the possible java mapping choices for the database type. In CVS is an extension to allow you to add a custom java type mapper. There is an example implementation (which I might setup as the default) that does some pre testing and type allocation based on coded criteria (eg no primitive types for nullable fields). You might be able to use this facility to solve your problem.