Re: Getting fault or object

"objectForPK()" executes a query though unless the object is already =
cached. So this is not entirely the same as creating a fault.=20

Andrus



> On Oct 26, 2025, at 6:54=E2=80=AFAM, Ricardo Parada =
<[email protected]> wrote:
>=20
> Yes, Cayenne.objectForPK() works.=20
>=20
> I did not know about the Cayenne class.=20
>=20
> Thank you,
> Ricardo Parada
>=20
>=20
>>=20
>> On Oct 26, 2025, at 4:58=E2=80=AFAM, Jurgen Doll =
<[email protected]> wrote:
>>=20
>> =EF=BB=BFI'm wondering if you couldn't just use:
>>=20
>> Cayenne.objectForPK( context, objClass, pkValue );
>> regards Jurgen
>>> On Oct 26 2025, at 1:13 am, Ricardo Parada <[email protected]> =
wrote:
>>>=20
>>> I put together this utility method. It seems to work:
>>> public static <T extends Persistent> T faultForPrimaryKeyValue(
>>> Class<T> type, Object pkValue, ObjectContext context) {
>>> if (type =3D=3D null || pkValue =3D=3D null || context =3D=3D null) =
{
>>> throw new IllegalArgumentException("type, pkValue, and context must =
not be null");
>>> }
>>>=20
>>> EntityResolver resolver =3D context.getEntityResolver();
>>> ObjEntity objEntity =3D resolver.getObjEntity(type);
>>> if (objEntity =3D=3D null) {
>>> throw new IllegalArgumentException("No ObjEntity found for class " + =
type.getName());
>>> }
>>>=20
>>> DbEntity dbEntity =3D objEntity.getDbEntity();
>>> if (dbEntity =3D=3D null) {
>>> throw new IllegalStateException("No DbEntity mapped for ObjEntity " =
+ objEntity.getName());
>>> }
>>>=20
>>> if (dbEntity.getPrimaryKeys().size() !=3D 1) {
>>> throw new IllegalStateException(
>>> "Entity " + dbEntity.getName() + " must have exactly one primary key =
column");
>>> }
>>>=20
>>> // Build the ObjectId
>>> DbAttribute pkAttr =3D dbEntity.getPrimaryKeys().iterator().next();
>>> String pkName =3D pkAttr.getName();
>>> String entityName =3D objEntity.getName();
>>> ObjectId objectId =3D ObjectId.of(entityName, pkName, pkValue);
>>>=20
>>> // Check if object already registered
>>> Persistent existing =3D (Persistent) =
context.getGraphManager().getNode(objectId);
>>> if (existing !=3D null) {
>>> @SuppressWarnings("unchecked")
>>> T casted =3D (T) existing;
>>> return casted;
>>> }
>>>=20
>>> // Create a new hollow (fault) object
>>> ClassDescriptor descriptor =3D =
resolver.getClassDescriptor(entityName);
>>> Persistent obj =3D (Persistent) descriptor.createObject();
>>>=20
>>> obj.setObjectContext(context);
>>> obj.setObjectId(objectId);
>>> obj.setPersistenceState(PersistenceState.HOLLOW);
>>>=20
>>> context.getGraphManager().registerNode(objectId, obj);
>>> @SuppressWarnings("unchecked")
>>> T casted =3D (T) obj;
>>> return casted;
>>> }
>>>=20
>>>=20
>>>>> On Oct 25, 2025, at 4:34=E2=80=AFPM, Ricardo Parada =
<[email protected]> wrote:
>>>> =EF=BB=BF
>>>>=20
>>>> Awesome, thank you for that code Andrus.
>>>>=20
>>>> Ricardo Parada
>>>>=20
>>>>=20
>>>>=20
>>>>>=20
>>>>> On Oct 25, 2025, at 12:16=E2=80=AFPM, Andrus Adamchik =
<[email protected]> wrote:
>>>>>=20
>>>>> =EF=BB=BFHi Ricardo,
>>>>>=20
>>>>> A rough equivalent used by Cayenne internally is this:
>>>>>=20
>>>>> ObjectId oid =3D ObjectId.of(entityName, "PK_COL_NAME", id);
>>>>> ClassDescriptor descriptor =3D =
context.getEntityResolver().getClassDescriptor(entityName);
>>>>>=20
>>>>> Persistent o =3D (Persistent) descriptor.createObject();
>>>>> o.setObjectContext(context);
>>>>> o.setObjectId(oid);
>>>>> o.setPersistenceState(PersistenceState.HOLLOW);
>>>>>=20
>>>>> context.getGraphManager().registerNode(oid, o);
>>>>>=20
>>>>> Thanks,
>>>>> Andrus
>>>>>=20
>>>>>=20
>>>>>> On Oct 24, 2025, at 9:05=E2=80=AFAM, Ricardo Parada =
<[email protected]> wrote:
>>>>>> Good morning,
>>>>>> I=E2=80=99m looking for the equivalent of the following EOF code:
>>>>>> var obj =3D EOUtilities.faultWithPrimaryKeyValue(editingContext, =
entityName, id);
>>>>>> What I have so far is:
>>>>>> var objClass =3D =
oc.getEntityResolver().getClassDescriptor(objEntityName).getObjectClass();=

>>>>>> var obj =3D SelectById.query(objClass, id)
>>>>>> .localCache()
>>>>>> .selectOne(oc);
>>>>>> But it seems to fetch the object the first time even though the =
object already exists in the object context.
>>>>>> Thanks in advance,
>>>>>> Ricardo Parada
>>>=20
>>=20