Hi,
My declarations are a bit different but I have seen this
happening ....
GAE not loading the subitems by default in some cases, then if you
close the PersistenceManager, subitems List is null.
I have solved it by looping all items and subitems before closing the
PersistenceManager....
On Jun 9, 4:05 am, cghersi <cristiano.ghe...@gmail.com> wrote:
> Hi all,
>
> I've got an issue with a property with type ArrayList<String>.
>
> Let's suppose I've got a class like this:
>
> @PersistenceCapable(identityType = IdentityType.APPLICATION,
> detachable = "true")
> @Inheritance(strategy=InheritanceStrategy.SUBCLASS_TABLE)
> public class CommContact implements Serializable {
> @PrimaryKey
> @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
> protected Long idCont;
>
> @Persistent(defaultFetchGroup="true")
> protected ArrayList<String> tags;
>
> // other properties....
>
> }
>
> And another class DBContact that extends CommContact, like this:
> @PersistenceCapable(identityType = IdentityType.APPLICATION,
> detachable = "true")
> public class DBContact extends CommContact {
> // some other properties...
>
> }
>
> Now, let's suppose that I do a query on datastore and I retrieve a
> DBContact object. Sometimes (I cannot understand which is the pattern
> for this issue...) the property "tags" is not correctly valued,
> resulting in an empty array (but if I go to the DataViewer, I can
> actually see that on the datastore some tags exist for this DBContact
> object...).
>
> What am I missing?
>
> I really cannot understand why sometimes it works and sometimes not...
>
> Thank you very much!
>
> Bye
> cghersi
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