Delete of collection results in "not managed by this PersistenceManager"

Question

Hello there,
I have a object A with a collection of B objects.
What I do is:
1. I create an A with serveral Bs (and comitt)
2. With a query, I select one B and delete it (and commit)
3. When I now re-query for A and it's Bs I get a
javax.jdo.JDOUserException: The instance "B_Class" is not managed by this
PersistenceManager.
It looks to me as if A and it's related Bs are somewhat cached. The error
goes away if a I do an evictAll() or evict(A) after I've deleted the
specific B instance.
However this is either slow or error-prone.
How do I delete objects so that the integrity of A is not affected?
Regards,
Ingomar

Answer 1

here's the code.
Patrick Linskey wrote:
Yan,
Additionally, it is possible that you set a relation in 'obj' to an
object that is not managed by the PersistenceManager, and then traversed
that relation in your query. Could you please post the code that builds
up and executes the query that you are executing?
-Patrick
Yan Or <[email protected]> writes:
i got this exception when i tried to persist an object and then query
for it in
the same transaction:
[java] javax.jdo.JDOUserException: The instance
"test.TestObject@195d80"
is not managed by this PersistenceManager and therefore cannot be
queried.
[java] at
com.solarmetric.kodo.query.InMemoryExpressionFactory$PathImpl
.eval(InMemoryExpressionFactory.java:452)
[java] at
com.solarmetric.kodo.query.InMemoryExpressionFactory$CompareE
xpression.eval(InMemoryExpressionFactory.java:649)
[java] at
com.solarmetric.kodo.query.InMemoryExpressionFactory$Conditio
nalExpression.eval(InMemoryExpressionFactory.java:588)
[java] at
com.solarmetric.kodo.query.InMemoryExpressionFactory$Expressi
onImpl.execute(InMemoryExpressionFactory.java:552)
[java] at
com.solarmetric.kodo.query.QueryImpl.synchWithTransaction(Que
ryImpl.java:433)
[java] at
com.solarmetric.kodo.query.QueryImpl.executeWithMap(QueryImpl
.java:360)
my code looks like this:
PersistenceManager pm = JDOFactory.getPersistenceManager ();
Transaction transaction = pm.currentTransaction ();
transaction.begin ();
pm.makePersistent(obj);
... query for the obj ...
transaction.commit ();
Patrick Linskey [email protected]
SolarMetric Inc. http://www.solarmetric.com