On Tue, Jan 19, 2010 at 3:37 AM, Siddharth Patnaik <[email protected]> wrote:
> Hi,
> I know how to do this in a RDBMS. If i were using a OR mapping
> framework like hibernate i would have followed your apporach. However
> in GAE we are not doing OR mapping at all. In java class annotations
> we are not at all talking about Tables/columns etc etc. is n't it? We
> just know about the objects/properties and relationship. In the
> example we just know 2 objects User and Tour. I do not think we should
> create a third object called Tour_User_Link and take care of
> persistance/relationship management and querying ourselves.
> Do you agree? or Am i missing something?

Well as this is not the AppEngine Java mailing list (if you are asking
how to do this in Java, you should go there), I can not say, this is
the generic AppEngine mailing list, as such I can tell you how it is
done in the back-end, not Java, and in every RDBMS and ORM I have seen
them do link tables behind the scenes as well.  Even in a flat table
system like GAE you still need a link table.
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