On Monday, September 29, 2003, at 09:02 AM, Giulio Cesare Solaroli
wrote:
> It's true that the dual table exists only on Oracle (by default), but
> it is also a really simple table to create from scratch: one table,
> one column, one raw. The real problem could be the lack of the
> "exists" operator and the correct handling of subqueries.
>
> The problem is that I though I could create subclasses of Expression;
> but Cayenne seems to take a different approach, using the
> ExpressionFactory class.
Never mind ExpressionFactory. This is just a helper class. You can
still subclass an Expression... Now given my previous message, do you
need to? Expression by itself doesn't build SQL.
QueryTranslator/QualifierTranslator does.
Andrus
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