No opinions at all? Does it look like that I'm doing the right thing? I just found out that it also doesn't work for a list of integers, possibly any collection of any simple type:
@ElementCollection @Extension(vendorName = "datanucleus", key = "gae.unindexed", value = "true") //private List<PositioningType> bestPositionings = new ArrayList<PositioningType>(); private List<Integer> bestPositionings; Results in: Caused by: org.datanucleus.exceptions.NucleusUserException: The MetaData for the element class "java.lang.Integer" of the collection field "com.olympya.datamodel.model.Player.bestPositionings" was not found. at com.google.appengine.datanucleus.scostore.AbstractFKStore.<init>(AbstractFKStore.java:120) at com.google.appengine.datanucleus.scostore.FKListStore.<init>(FKListStore.java:83) at com.google.appengine.datanucleus.DatastoreManager.newFKListStore(DatastoreManager.java:472) at org.datanucleus.store.mapped.MappedStoreManager.getBackingStoreForCollection(MappedStoreManager.java:798) at org.datanucleus.store.mapped.MappedStoreManager.getBackingStoreForField(MappedStoreManager.java:709) at org.datanucleus.store.types.sco.backed.ArrayList.<init>(ArrayList.java:99) :( Em quarta-feira, 29 de agosto de 2012 13h46min03s UTC-3, roberto_sc escreveu: > > > I'm moving from JPA 1 to JPA 2 in my Gooogle App Engine project, and for > that I changed the annotations for collections of enums, like this case: > > // @OneToMany(cascade = CascadeType.ALL) // JPA 1 > @ElementCollection(targetClass=PositioningType.class) > private List<PositioningType> bestPositionings; > > > PositioningType is an enum that is not annotated. > > That code is giving me the following exception: > > javax.persistence.PersistenceException: The MetaData for the element class > "com.olympya.datamodel.model.PositioningType" of the collection field > "com.olympya.datamodel.model.Player.bestPositionings" was not found. > at > org.datanucleus.api.jpa.NucleusJPAHelper.getJPAExceptionForNucleusException(NucleusJPAHelper.java:302) > at > org.datanucleus.api.jpa.JPAEntityTransaction.commit(JPAEntityTransaction.java:122) > at com.olympya.Services.mergeUser(Services.java:102) > ... > Caused by: org.datanucleus.exceptions.NucleusUserException: The MetaData for > the element class "com.olympya.datamodel.model.PositioningType" of the > collection field "com.olympya.datamodel.model.Player.bestPositionings" was > not found. > at > com.google.appengine.datanucleus.scostore.AbstractFKStore.<init>(AbstractFKStore.java:120) > at > com.google.appengine.datanucleus.scostore.FKListStore.<init>(FKListStore.java:83) > at > com.google.appengine.datanucleus.DatastoreManager.newFKListStore(DatastoreManager.java:472) > at > org.datanucleus.store.mapped.MappedStoreManager.getBackingStoreForCollection(MappedStoreManager.java:798) > at > org.datanucleus.store.mapped.MappedStoreManager.getBackingStoreForField(MappedStoreManager.java:709) > at org.datanucleus.store.types.sco.backed.ArrayList.<init>(ArrayList.java:99) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) > ... > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/M9bihLLrsTAJ. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
