Hi guys, I have a "common" problem to solve: how to order a One-to-Many Relationships with JDO?
I have parent "Parent", with several children implemented in this way: List<Children> childrens My .jdo file is: <field persistence-modifier="persistent" name="childrens" mapped- by="parent"><collection dependent-element="true"></collection><order / ></field> In this case I see a column in the DB called Parents_INTEGER_IDX, but to me it seems quite trivial to modify the ordering manually, because each time I move a children from the last position to the first one I should modify all the values. I am missing something or it's the only way? For this reason and also for this article: http://code.google.com/appengine/docs/java/datastore/jdo/relationships.html#Owned_One_to_Many_Relationships .. I am thinking about implementing the order of children with a list of keys in the Parent. What do you think? Michele -- 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.
