Hi Linda, all,
Linda DeMichiel, am 11 Mar 2011 hast Du um 13:30 zum Thema "[jsr338-experts] outer joins with ON conditions" geschrieben :
> For the criteria API equivalent, we could add methods
>
> on(Expression<Boolean> restriction);
> and
>
> on(Predicate... restriction);
>
> to the Join interface.
>
> I'm not however sure what it is best that these methods return.
What are your concerns against returning the Join instance they're
residing on (i.e. overriding the method on the subinterfaces of Join
declaring the respective type each) ?
> Finally, we should also discuss whether we should support the use of
> ON with inner joins. SQL supports this, with the semantics that it is
> equivalent to the use of WHERE.
While I personally don't feel the desire to provide a second syntax of
identical meaning, I fear, the way the criteria API has been designed
practically forces us into this. And, as SQL does the same, it probably
meets the expectations of the users...
Best regards
Rainer
---
Rainer Schweigkoffer SAP AG Walldorf
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Technology Development Dietmar-Hopp-Allee 16
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