*actually, two parents. On 22 nov, 15:22, vaninh0 <[email protected]> wrote: > Hi Didier, > > with Objectify is possible to create a Entity with two distinct > childrens? > > example: > > class A { > @Id Long Id;} > > class B { > @Id Long Id;} > > class C { > @Id Long Id; > @Parent Key<A> a; > @Parent Key<B> b; > > } > > regards, > vanio. > > On 20 nov, 14:41, Didier Durand <[email protected]> wrote: > > > Hi, > > > I would recommend Objectify (which I use heavily): seems to match your > > need. > > > regards > > didier > > > On Nov 20, 1:20 pm, Roberto Saccon <[email protected]> wrote: > > > > maybe a good place to start is sourcecode of lowlevel-based frameworks > > > like slim3 or objectify > > > -- > > > Roberto > > > > On Nov 20, 8:13 am, Tom <[email protected]> wrote: > > > > > Hi there, > > > > > I'm searching for information of entity relation ships in appengine. > > > > JPA for example supports relations between entites (one-to-one, > > > > ont-to-many, many-to-many). As far as I know by know the underlying > > > > datastore doesn't direktly support this and not join queries (different > > > > entities). > > > > > How do you store Customer -> Orders in the datastore? Is there low > > > > level API example code? > > > > Would I store an entity "Customer" with attributes and a list of order > > > > ids? > > > > > Any help highly appreciated. > > > > Thanks > > > > Tom > >
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