You might want to use @Persistent(mappedBy = "parent") for your Parent entity declaration in your Child entity.
Owned one-to-many http://code.google.com/appengine/docs/java/datastore/jdo/relationships.html#Owned_One_to_Many_Relationships On Jun 5, 9:27 pm, Didier Durand <durand.did...@gmail.com> wrote: > Hi, > > As a workaround, why don't you delete each entity in the set in a loop > by yourself before deleting the entity which the set is part of ? > > regards > > didier > > On Jun 6, 1:48 am, mscwd01 <mscw...@gmail.com> wrote: > > > > > > > > > Hey, > > > I have a "parent" entity which has a Set of "child" entities, as > > follows: > > > class Parent { > > > @Persistent @Element(dependent = "true") > > private Set<Child> children; > > > } > > > When I delete the "Parent" entity I get the following exception: > > > javax.jdo.JDOUserException: Cannot read fields from a deleted object > > FailedObject:com.google.appengine.api.datastore.Key:Parent("100034534545656 > > 7676")/ > > Child(2) > > > It seems JDO deletes the "Parent" entity before the "Child" objects in > > the dependent Set property, which causes the above exception to appear > > when the Child entities in the Set are themselves deleted. Does anyone > > know how to solve this issue? > > > FYI when I delete the parent entity I use pm.deletePersistent() within > > a transaction. > > > Thanks -- 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 google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
