Hi
Probably the topic is already discussed and not once but still I can't
find any explanation :-(
So, I have an object, which contains list of another objects. Like
this:
@PersistenceCapable
public class ItemCollection {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
Key key;
@Persistent
String Name;
@Persistent(mappedBy = "owner")
List<Item> items = new ArrayList<Item>();
}
and have class Item:
@PersistenceCapable
public class Item {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
Key key;
@Persistent
String name;
@Persistent
ItemCollection owner;
}
Then I try to persist parent object:
Item item = new Item();
item.name = "Item 1";
coll = new ItemCollection();
coll.Name = "Collection 1";
coll.items.add(item);
PersistenceManager pm = PMF.get().getPersistenceManager();
pm.makePersistent(coll);
And then I try to retrieve it:
PersistenceManager pm = PMF.get().getPersistenceManager();
Extent<ItemCollection> extent = pm.getExtent(ItemCollection.class);
Iterator<ItemCollection> iterator = extent.iterator();
while (iterator.hasNext())
{
coll = iterator.next();
}
And I see the ItemCollection fields (like Name) are retrieved but
coll.items remains empty (but not null). How can I get child list?
Thanks
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