what do you mean by "store a list of embedded objects"?
if you're storing in the datastore, you have to have a way to
serialize whatever you got into one of the supported storable types.
On Apr 7, 11:04 am, tempy wrote:
> I have been dealing with lots of varying exceptions trying to
> implement/
Well, what I need is something like this:
@PersistenceCapable(detachable = "true")
public class Parent {
@PersistenceCapable
@EmbeddedOnly
public class EmbeddedChild {...}
@Embedded
private List Children;
...
}
This doesn't work, so... Do I understand yo
i work with low-level datastore api, so i serialize things myself, but
essentially yes. The issue you're probably running into is that the
thing that you're using to interact with the datastore, does not know
how to store EmbeddedChild. I would start there.
from low-level datastore api point of vi
On 8 Apr 2010, at 00:40, Tristan wrote:
what do you mean by "store a list of embedded objects"?
if you're storing in the datastore, you have to have a way to
serialize whatever you got into one of the supported storable types.
If you want to be able to query on the embedded instances then you
You can serialize object graphs, but keep in mind that you won't be
able to index/query this data and it will be opaque to the datastore
viewer. It will also be opaque to GAE/Python tools.
As John mentioned, you can get embedded object collections without
Java serialization if you use Objectify o
Hi John,
>
> If you want to be able to query on the embedded instances then you will need
> to use one of the datastore specific persistence interfaces: ObjectDatastore
> from Twig and Objectify support this... not sure if others support embedded
> collections.
>
Slim3 supports embedded collections
On 8 Apr 2010, at 13:51, Yasuo Higa wrote
Slim3 supports embedded collections as follows:
@Attribute(lob = true)
private List Children;
See
http://sites.google.com/site/slim3appengine/slim3-datastore/defining-data-classes/serializable-objects
Serializing is a bit different to embedding ins
Hi John, thanks for your clarification.
Current Slim3 does not support embedding instances like Twig/Objectify.
Yasuo Higa
>
> Serializing is a bit different to embedding instances because the Blob is
> opaque and not able to be queried. If you use @Embed in Twig or Objectify
> you can query for
