Hello Adam,
TopLink Essentials does not support 'nested' fetch joins but
EclipseLink which will be the persistence provider in V3 does support
'nested' fetch joins and another powerful feature known as batch
reading. Both features are accessible though query hints.
--Gordon
Adam Bien wrote:
> Hi All,
>
> in my current project, we would like to minimize the amount of round
> trips to the database (slow network with high latency) and fetch the
> whole object graph into the cache once. It starts with one root-object
> instance.
> Especially all lazy-relations should be loaded with as few as possible
> SQL-statements.
>
> Some questions:
> - does TopLink support "nested" fetch joins?
> - is it possible to prefetch selected relations in another way (e.g.
> proprietary TopLink extensions)?
>
> We need this behavior only for certain use cases...
>
> thank you in advance,
>
> adam
>