:-(
As you can see here
http://code.google.com/intl/it-IT/appengine/docs/java/javadoc/com/google/appengine/api/datastore/Query.html
Gae low level API don't support, query.setParameter(...)
there are some other solutions?
(tank's for the answer Tony)
On 25 Lug, 16:14, Tony Qiu <tony.qiu.sm...@gmail.com> wrote:
> 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<salvatore.bela...@gmail.com> wrote:
>
> > 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<String> tags
> > I want to query all the user with a specific role
> > my code
> > //...
> > DatastoreService ds=
> > DatastoreServiceFactory.getDatastoreService();
> > Query query = new Query("User");
> > query.addFilter("tag????", Query.FilterOperator.EQUAL,
> > "admin"); // <<<<<-----HERE
> > PreparedQuery pq = ds.prepare(query);
> > Iterable<Entity> it = pq.asIterable();
> > //...
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