I would say that if you want to get from the child to the parent, you would need to setup a bidirectional relationship. if you do not care, then unidirectional will suffice.
The question would be it probably also affects querying the chilrdren based on the parent. Meaning that if it is not bydirectional, you cannot query on the children of a parent...you always have to get the parent and then go to the children. Is this true? On Apr 29, 7:41 am, KeremPekcabuk <[email protected]> wrote: > what is the difference between owned one to many relationship and > owned one to many bidirectional relationship > > i read the article below but i don't understand it. > > http://code.google.com/intl/tr-TR/appengine/docs/java/datastore/relat... > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" 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 > athttp://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" 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-java?hl=en.
