No you can't.
The entity stores as a pair of (key: value). You can only get both of them
at a same time.
I suggest you use a memcache:
index = memcache.get('index')
if not index:
index = []
result = query.fetch(15) # maybe you need do it several times
index.append([e.key() for e in result])
Just an FYI, the ability to fetch just the keys for entities which match a
query (instead of fetching the full entity) is a feature request which is on
our radar.
Good question,
Jeff
On Wed, Apr 15, 2009 at 7:57 AM, 风笑雪 wrote:
> No you can't.
> The entity stores as a pair of (key: value). You
Thanks Jeff. :)
风笑雪, memcache is no solution in this case, but thanks anyway.
I also want to keep the overhead as low as possible, because I am
already storing a lot of text data inside the datastore. Therefore I
don't want to have another Kind that just handles the list of
available links if th
Perhaps you may keep it in another model.
class BigModel(db.Model):
...
class KeyModel(db.Model):
key = db.ReferenceProperty(BigModel)
# do below in a transaction
bigEntity = BigModel()
...
bigEntity.put()
KeyModel(key=bigEntity.key()).put
2009/4/17 mbac...@googlemail.com
>
> Thanks Jeff.
