Background:
I am using app engine 1.5 and GWT 2.3 with requestfactory. I have an
inventory object that has an ArrayList of InventoryItems. I can
update and add entitites to the ArrayList collection without issue.
Now I am trying to update a single InventoryItem object and it appears
to complete successfully but the data is not updated. There is no
exception being thrown and I see the the updated client values just
before persisting the object. I have verified that the transaction is
successful. Is there something I am missing? I have also tried to add
a function in the Inventory class to update an InventoryItem and after
mark the inventoryItems dirty using JDOHelper.makeDirty(this,
inventoryItems) but this did not solve my issue either.
@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable = "true")
public class Inventory {
/**
* List of all inventory items in this inventory.
*/
@Persistent(mappedBy="inventory")
@Element(dependent="true")
private List<InventoryItem> inventoryItems;
... more
}
----------
@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable = "true")
public class InventoryItem {
public InventoryItem persist() {
System.out.println("Persisting object with id " + this.getId());
System.out.println("Price is " + this.getPrice().toString());
PersistenceManager em = EntityManager.getPersistenceManager();
InventoryItem attached = null;
Transaction tx = em.currentTransaction();
try {
tx.begin();
attached = em.makePersistent(this);
tx.commit();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (tx.isActive()) {
tx.rollback();
}
} finally {
em.close();
}
}
return attached;
}
/**
* Primary key that can be used to reference this expense
*/
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
@Extension(vendorName = "datanucleus", key = "gae.encoded-pk", value
= "true")
private String id;
@Persistent Inventory inventory;
.... more data
}
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