At the very beginning, I thought to manage association like this: - Case of @OneTo* associations could be managed like embeddeds (for me it makes sens and close to the mongo way) - Case of @ManyTo* associations could be managed in a usual way (association collections, etc.)
Of course, at the end, we should provide a configuration system like an @InsideAssociation to explicitly say "I want to store this association inside the "master" one" no ? And regarding the documentation http://www.mongodb.org/display/DOCS/Database+References#DatabaseReferences-DBRef it could be an idea :) what do you think ? Guillaume 2012/4/25 Emmanuel Bernard <emman...@hibernate.org> > ## Mapping strategy > > I think we have explored three main options while implementing the > association mapping in MongoDB > > 1. Put the assoc info within the entity document we navigate from > 2. Put the assoc info in a dedicated document and dedicated collection > 3. Put the assoc info in n documents (one doc per row) and a dedicated > collection > > And slightly orthogonal to this, we have considered to use a prefix for > the association collection to make sure it does not clash when mapping > @ManyToOne @JoinColumn. > > I am reading MongoDB in Action and it seems option 1 is the most natural > for MongoDB. At least let's offer the option via a property collected by > the datastore / dialect. We can decide to reduce options down the road we > we have a better grasp. And that will prevent rewriting the dialect every > tie someone changes his mind (like me ;P) > > ## Optimizing what is store > > We definitely store the same data over and over (like the table in > association rows. At some point we probably will want to clean that up to > do a more "natural" mapping. > > (More) thoughts on associations? > > Emmanuel > > PS: this is nothing new but I'd rather capture this info by mail rather > than via IRC discussions to consolidate it. > _______________________________________________ > 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
