Thank you Amy for your reply... On Mon, Jan 30, 2012 at 12:41 AM, Amy Unruh <amyu+gro...@google.com> wrote:
> A pointer to the related Stack Overflow question, where I've provided *an* > answer, related to needing to fetch child objects before closing the > PersistenceManager: > > http://stackoverflow.com/questions/9049491/org-datanucleus-exceptions-nucleususerexception-object-manager-has-been-closed/ > I have tried touching everything as follows, but I still get an exception when I try accessing the data. static XZStore getStoreByEmail(String email) { PersistenceManager pm = PMF.get().getPersistenceManager(); try { Extent<XZStore> storeExtent = pm.getExtent(XZStore.class); for (XZStore store : storeExtent) { if (store.getAdmin().getEmail().equals(email)) { XZStore detachedStore = pm.detachCopy(store); detachedStore.setAdmin(pm.detachCopy(store.getAdmin())); detachedStore.setUsers((List<User>) pm.detachCopyAll((store.getUsers()))); detachedStore.setInventory((List<Item>) pm.detachCopyAll(store.getInventory())); detachedStore.setReceipts((List<Receipt>) pm.detachCopyAll(store.getReceipts())); List<Sale> detachedSales = new ArrayList<Sale>(); for (Sale sale : store.getSales()) { Sale detachedSale = pm.detachCopy(sale); detachedSale.setSaleItems((List<SaleItem>) pm.detachCopyAll(sale.getSaleItems())); detachedSales.add(detachedSale); } detachedStore.setSales(detachedSales); detachedStore.setShipments((List<Shipment>) pm.detachCopyAll(store.getShipments())); detachedStore.setCustomers((List<Customer>) pm.detachCopyAll(store.getCustomers())); detachedStore.setCompany(pm.detachCopy(store.getCompany())); storeExtent.closeAll(); return detachedStore; } } storeExtent.closeAll(); return null; } finally { pm.close(); } } > > Though, I see that you're not sure whether this is the issue you're > running into. You might do a test in which you explicitly fetch the data > from every field you'll need to later access in the detatched objects, > while you're still in the open PersistenceManager context, and see if this > fixes the problem. > As you can see I've tried it but it does not fix the problem, unless I also have to access the simple fields such as String, Data, int, long, double, etc... which should have been retrieved automatically I suppose since they are not lists? Thanks, JG > > > On Sun, Jan 29, 2012 at 10:52 AM, John Goche > <johngoch...@googlemail.com>wrote: > >> >> Hello, >> >> If anyone knows how to deal with >> org.datanucleus.exceptions.NucleusUserException: Object Manager has been >> closed >> any help would be greatly appreciated. Here is the code which is throwing >> the exception: >> >> static void persistStore() { >> >> PersistenceManager pm = PMF.get().getPersistenceManager(); >> Transaction tx = pm.currentTransaction(); >> try { >> tx.begin(); >> pm.makePersistent(Data.store); >> tx.commit(); >> } finally { >> if (tx.isActive()) >> tx.rollback(); >> pm.close(); >> } >> >> } >> >> I don't see anything wrong with the code. Any ideas? >> >> >> John Goche >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine for Java" group. >> To post to this group, send email to >> google-appengine-java@googlegroups.com. >> To unsubscribe from this group, send email to >> google-appengine-java+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/google-appengine-java?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > google-appengine-java@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
