Multiple Relations of Same Type

[David Gonzalez]

Hi,

I have 3 classes: MyClass, MySubClass and ProblemClass
The first one have two MySubClass objects: MySubClass1 and MySubClass2
Each MySubClass has a ProblemClass object: ProblemClass1 and
ProblemClass2

Just before call 'manager.makePersistent(MyClass);' I checked the
attribute in both ProblemClass objects and they were differents (That
´s OK).
But when I tried to recover MyClass object from the datatore the
attributes inside the ProblemClass objects are equal (THAT'S WRONG).
Both ProblemClass have the values of ProblemClass2

Checking the datastore I saw both ProblemClass objects were created
(With correct values), however MySubClass1 and MySubClass2 seems to be
pointing to the same ProblemClass

All classes have the same key type:

@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;

Am I doing something wrong? Is something missing to work with same
type relations? Definitely AppEngine doesn't allow same type
relations?

PLS HELP!!!!! I'm really stuck!!!

[Robert Kluin]

Hi,
You might want to include some of the relevant code, such as your
model definitions and the code that sets and persists the entities.
Also note that there is a Java specific group; might have a better
chance of a Java whiz spotting it and helping you out there.

Robert

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[David Gonzalez]

This code is to save the object FaseGAE:

manager = GAEDAOFactory.get().getPersistenceManager();
Key faseKey = KeyFactory.stringToKey(grupo.getFaseKey());
FaseGAE faseGAE = manager.getObjectById(FaseGAE.class, faseKey);
faseGAE.addGrupoGAE(grupoGAE);
faseGAE = manager.makePersistent(faseGAE);
manager.close();

This code is to get the object:

manager = GAEDAOFactory.get().getPersistenceManager();
FaseGAE faseGAE2 = manager.getObjectById(FaseGAE.class, faseKey);

FaseGAE object:

@PersistenceCapable
public class FaseGAE {

@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;

@Persistent private List<GrupoGAE> grupos;

GrupoGAE object:

@PersistenceCapable
public class GrupoGAE {

@PrimaryKey
@Persistent (valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;

@Persistent private List<MyClass1> list;

MyClass1 object:

@PersistenceCapable
public class MyClass1 {

@PrimaryKey
@Persistent (valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;

@Persistent private MyClass2 sameTypeObject1;
@Persistent private MyClass2 sameTypeObject2;
@Persistent private String testValue1;
@Persistent private String testValue2;

MyClass2 Object:

@PersistenceCapable
public class MyClass2{

@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;

testValue1 and testValue2 keeps different values, but sameTypeObject1
and sameTypeObject2 have the value of sameTypeObject2. I checked the
datastore and both objects were created with different values. It
seems like both point to the same reference.

Am I doing something wrong?

Something it's missing to work with same type relations?

Definitely AppEngine doesn't allow same type relations?

PLS HELP!!!!!