Is this field in your fetch group when you retrieve data. I use the
following way to ensure that a field is in my default fetch group:
@Persistent(defaultFetchGroup="true")
private Text content;
On Jul 24, 10:34 pm, poe wrote:
> Hi everyone,
>
> i've implemented a small application with
>
>
Nope, that didn't solve the problem. Another strange thing is, when I
query on the entities I only get one result on the appengine server,
locally I get all results that are assigned to the user. Another
strange thing is, that the datastore viewer in the appengine admin
area shows a "null" value fo
Hi i've problem
How a can query a data inside an ArrayList?
I use low level Datastore API
the data is structured like this
entity (kind 'User')
-String username
-String pass
-ArrayList tags
I want to query all the user with a specific role
my code
//...
DatastoreService ds=
Datast
Of course you can do it.
there is a keyword "member of" in JP-QL. you can use the JP-QL below
to do what you want.
Query query = new Query("select o from user o where :tag member of
o.tags");
query.setParameter("tag","abc")
On 7月25日, 下午8时28分, salvatore wrote:
> Hi i've problem
> How a can quer
No entiendo bien eso de las restricciones. Donde puedo ver las
restricciones de Google App Engine?
El 24/07/10, nicolas melendez escribió:
> Antes de empezar a desarrollar una aplicación para app engine, LEE muy bien
> las restricciones de app engine,
> puede que tu projecto pueda fracasar por cu
Hi,
1.) Yes, you can have inheritance relationships. I use the following:
@Inheritance(strategy = InheritanceStrategy.SUBCLASS_TABLE)
2.) It looks like your problem isn't with the inheritance but is
because you must have in your Partido class a field which is defined
as Resultado and thus you can
I am stumped. No matter what API call I try to read a large blob, I
get the following:
Caused by: com.google.apphosting.api.ApiProxy$ApplicationException:
ApplicationError: 6: Blob fetch size too large.
I have tried using the BlobStoreInputStream,
BlobStoreService.fetchData, and even BlobStoreSe
Hi,
I tried to delete an old version of my App, but am unable to. It shows
some kind of error occured.
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Hello,
I'm quite frustrated with entity groups. They seem to make the
concept of a transaction largely pointless.
The specific problem I face at this moment is this. Since the
datastore has no concept of foreign key constraints, I need to do
bounds checking. Here's the case:
There exists a D
Creo q a lo q se refiere Nicolas es que una applicacion q corre en
appengine tiene ciertas características especiales (algunas de ellas
restricciones, otras, formas especificas de hacer las cosas)
si bien vos podes utilizar tanto Python como Java para desarrollar
apps para appengine, la forma en q
Here is the code i am trying to run, where "Device" is a
persistententity stored in the datastore.
@SuppressWarnings("unchecked")
public static List findAll() {
String sqlFetchAll = "select from " + Device.class.getName();
Query query = Device.getPersistenceManager().newQuery(sqlFe
http://code.google.com/appengine/docs/python/datastore/entitiesandmod...
On 7月26日, 上午9时07分, korey_sed wrote:
> I am stumped. No matter what API call I try to read a large blob, I
> get the following:
>
> Caused by: com.google.apphosting.api.ApiProxy$ApplicationException:
> ApplicationError: 6: B
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