public void open() {
ensureNotYetOpen();
openSession();
ensureThatState(persistenceManager, is(notNullValue()));
addPersistenceQueryProcessors(persistenceManager);
state = State.OPEN;
}
/** Walking the graph. */
public void resolveField(final ObjectAdapter object, final ObjectAssociation association) {
ensureOpened();
ensureInTransaction();
final ObjectAdapter referencedCollectionAdapter = association.get(object);
// this code originally brought in from the JPA impl, but seems reasonable.
if (association.isOneToManyAssociation()) {
ensureThatState(referencedCollectionAdapter, is(notNullValue()));
final Object referencedCollection = referencedCollectionAdapter.getObject();
ensureThatState(referencedCollection, is(notNullValue()));
// if a proxy collection, then force it to initialize. just 'touching' the object is
// sufficient.
// REVIEW: I wonder if this is actually needed; does JDO use proxy collections?
referencedCollection.hashCode();
}
// the JPA impl used to also call its lifecycle listener on the referenced collection object, eg
// List,
// itself. I don't think this makes sense to do for JDO (the collection is not a
// PersistenceCapable).
}
/**
* {@inheritDoc}
*
* <p>Automatically {@link IsisTransactionManager#endTransaction() ends (commits)} the current
* (Isis) {@link Transaction}. This in turn {@link DataNucleusObjectStore#commitJdoTransaction()
* commits the underlying JPA transaction}.
*
* <p>The corresponding DataNucleus {@link Entity} is then {@link EntityManager#close() close}d.
*/
public void close() {
ensureOpened();
ensureThatState(persistenceManager, is(notNullValue()));
try {
final IsisTransaction currentTransaction = getTransactionManager().getTransaction();
if (currentTransaction != null && !currentTransaction.getState().isComplete()) {
if (currentTransaction.getState().canCommit()) {
getTransactionManager().endTransaction();
} else if (currentTransaction.getState().canAbort()) {
getTransactionManager().abortTransaction();
}
}
} finally {
// make sure release everything ok.
persistenceManager.close();
state = State.CLOSED;
}
}
private void ensureInHibernateTransaction() {
javax.jdo.Transaction currentTransaction = getPersistenceManager().currentTransaction();
ensureThatState(currentTransaction, is(notNullValue()));
ensureThatState(currentTransaction.isActive(), is(true));
}