Why does the code below result in
org.datanucleus.exceptions.NucleusUserException: Object Manager has
been closed? The exception appears to be thrown at
query.getResultList(). I'm using Spring JPA.
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean" lazy-
init="true">
<property name="persistenceUnitName" value="transactions-
optional"/>
</bean>
public final void removeUserTokens(final String username) {
final Query query = entityManager.createQuery(
"SELECT p FROM PersistentLogin p WHERE username = :username");
query.setParameter("username", username);
for (Object token : query.getResultList()) {
entityManager.remove(token);
}
}
Exception:
org.datanucleus.exceptions.NucleusUserException: Object Manager has
been closed
at
org.datanucleus.ObjectManagerImpl.assertIsOpen(ObjectManagerImpl.java:
3876)
at
org.datanucleus.ObjectManagerImpl.getFetchPlan(ObjectManagerImpl.java:
376)
at org.datanucleus.store.query.Query.getFetchPlan(Query.java:497)
at org.datanucleus.store.appengine.query.DatastoreQuery
$6.apply(DatastoreQuery.java:611)
at org.datanucleus.store.appengine.query.DatastoreQuery
$6.apply(DatastoreQuery.java:610)
at
org.datanucleus.store.appengine.query.LazyResult.resolveNext(LazyResult.java:
94)
at org.datanucleus.store.appengine.query.LazyResult
$LazyAbstractListIterator.computeNext(LazyResult.java:215)
at
org.datanucleus.store.appengine.query.AbstractIterator.tryToComputeNext(AbstractIterator.java:
132)
at
org.datanucleus.store.appengine.query.AbstractIterator.hasNext(AbstractIterator.java:
127)
at org.datanucleus.store.appengine.query.LazyResult
$AbstractListIterator.hasNext(LazyResult.java:169)
at
com.mystuff.service.auth.PersistentTokenRepositoryImpl.removeUserTokens(PersistentTokenRepositoryImpl.java:
90)
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