As far as I can tell, "extra-lazy" applies to the collection itself, not its elements. lazy="extra" is defined on <map>, <set>, <bag>, <idbag>, <list>.
Currently, an extra-lazy collection can be configured having <many-to-many> with fetch="select" or outer-join="false". In the case of a map, doing a lookup by key would not initialize the map (because the map is extra-lazy) and it would return an uninitialized proxy for the value (because of the fetch="select" or outer-join="false"). Do you think that would have a real-world application? Removing the fetch="select" or outer-join="false" functionality from <many-to-many> on an extra-lazy collection would not change the normal extra-lazy behavior, avoiding initialization of the collection itself. Gail ----- Original Message ----- > From: "Sanne Grinovero" <sa...@hibernate.org> > To: "Gail Badner" <gbad...@redhat.com> > Cc: "hibernate-dev" <hibernate-dev@lists.jboss.org> > Sent: Monday, October 21, 2013 4:47:58 PM > Subject: Re: [hibernate-dev] Use cases for many-to-many collection of proxies? > > Hi Gail, > does this impact as well the "extra-lazy" collections? > I definitely had great use cases for them in the past. > > On 21 October 2013 19:22, Gail Badner <gbad...@redhat.com> wrote: > > Are there real-world use cases where an initialized many-to-many collection > > should contain elements that are uninitialized proxies (HibernateProxy), > > rather than entity instances? > > > > Currently, it is possible to configure this behavior using either: > > > > <many-to-many ... fetch="select"/> > > <many-to-many ... outer-join="false"/> > > > > We are considering removing this capability if there are no real-world use > > cases. > > > > Fetch profiles do not provide this level of granularity. The fetch style > > for the collection itself, but not its elements, can be configured using a > > fetch profile. > > > > As far as I know, JPA does not provide this level of granularity either. > > > > Please let us know if you are using this functionality. > > > > Thanks, > > Gail > > _______________________________________________ > > hibernate-dev mailing list > > hibernate-dev@lists.jboss.org > > https://lists.jboss.org/mailman/listinfo/hibernate-dev > _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
