Java g JDOObjectNotFoundExceptions，但我可以看到对象在那里！我将发布一个带有JDO的update.FYI v2.3的图片，这意味着GAE JDO插件（datanucleus appengine jar）的v1.0。 query =

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g JDOObjectNotFoundExceptions，但我可以看到对象在那里！我将发布一个带有JDO的update.FYI v2.3的图片，这意味着GAE JDO插件（datanucleus appengine jar）的v1.0。

query = persistenceManager.newQuery(HuddleCreatorIndex.class, ":p.contains(creator)");
List<HuddleCreatorIndex> myCreatorIndexList = (List<HuddleCreatorIndex>) query.execute(KeyFactory.createKey(Contact.class.getSimpleName(), fbUserId));
if (myCreatorIndexList.size() > 0) {
    Set<Long> huddles = myCreatorIndexList.get(0).getHuddles();
    //THIS FOR LOOP DID THE TRICK, why is this necessary?  Never saw it in any examples
    for (Long huddleKey : huddles)
        alist.add(persistenceManager.newObjectIdInstance(Huddle.class, huddleKey));
    Collection<Huddle> huddlesICreated = persistenceManager.getObjectsById(huddles);
    allMyHuddles.addAll(huddlesICreated);
}

txn.begin();
//First, create the Huddle, this main model class
newHuddle.setInvitees(inviteeList);
newHuddle = pm.makePersistent(newHuddle);
huddleId = newHuddle.getId();

//Now create the first index
HuddleIndex newIndex = new HuddleIndex();               
newIndex.setParent(KeyFactory.createKey(Huddle.class.getSimpleName(), newHuddle.getId()));
newIndex.setInvitees(inviteeList);
pm.makePersistent(newIndex);

//And finally, create the other index
Query query = pm.newQuery(HuddleCreatorIndex.class);
query.setFilter(":p.contains(creator)");
List<HuddleCreatorIndex> list = (List<HuddleCreatorIndex>) query.execute(creator.getId());
if (list != null && list.size() > 0) {
    HuddleCreatorIndex thisIndex = list.get(0);
    Set<Key> huddles = thisIndex.getHuddles();
    huddles.add(KeyFactory.createKey(Huddle.class.getSimpleName(), newHuddle.getId()));
    thisIndex.setHuddles(huddles);
} else {
    HuddleCreatorIndex newCreatorIndex = new HuddleCreatorIndex();
    newCreatorIndex.setCreator(creator.getId());
    Set<Long> huddleSet = new HashSet<Long>(1);                   
    huddleSet.add(newHuddle.getId());
    newCreatorIndex.setHuddles(huddleSet);
    pm.makePersistent(newCreatorIndex);
}
txn.commit();

@PersistenceCapable(identityType = IdentityType.APPLICATION, detachable="true")
public class Huddle {

    @PrimaryKey
    @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
    private Long id; 

    private Key creator;
    private String name;
    private Date whenTimeStamp;
    private Date creationTimeStamp;
    private String userIdType;
    private Set<Key> invitees;
    private String status;
    private Set<Key> choices;
    private List<Vote> votes;

    //setters, getters, and constructor omitted
}

@PersistenceCapable(identityType = IdentityType.APPLICATION, detachable="true")
public class HuddleCreatorIndex {

    @PrimaryKey
    @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
    private Key id; 
    private Key creator;
    private Set<Long> huddles;
    //setters, getters, and constructor omitted
}