Hello, In my application i have to implement a many2many (m:n) relationionship in the datastore using JDO. Well, this kind of relationship is realized in this way that each entity holds a Set<Key> of the other entity, just like it is discussed in this tutorial:
http://code.google.com/appengine/docs/java/datastore/relationships.html My problem is: How could I store these entities in the datastore? Example: I have an entity named GROUP that holds several MEMBER entities. On the other side a MEMBER entity holds several GROUP entities. When it comes to test the datastoring i have to create a group entity and feed in the relational member entities in the Set<Key> but a "member" entity just gets an Key from JDO when it is already persisted. And conversely: I have to feed the Set<Key> in the group entity when i want to create a member entity.... Can anyone give me a quick code snippet on how i can store m:n entities in the datastore? greets.... -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
