The method which I have to retrieve the information of and announcer
is this one...
private Announcer getAnnouncerFromEmailAddress(String emailAddress)
throws UnknownUserException {
Announcer announcerLoaded = null;
// Creating a PersistentManager to interact with the DataBase
PersistenceManager pm = PMF.get().getPersistenceManager();
// Query to check if the current user exists
Query query = pm.newQuery(Announcer.class);
// Set the filter
query.setFilter("emailAddress == emailAddressParam");
// Declare the parameter
query.declareParameters("String emailAddressParam");
// Run the query and check the result
try {
List<Announcer> results = (List<Announcer>)
query.execute
(emailAddress);
if (!results.isEmpty()) {
announcerLoaded = results.get(0);
} else {
throw new UnknownUserException();
}
} finally {
pm.close();
}
return announcerLoaded;
}
after execute the query, the field country is null.
On Dec 2, 7:13 pm, "Ikai L (Google)" <[email protected]> wrote:
> Do you have a reproducible test case or some code you can post?
>
>
>
> On Tue, Dec 1, 2009 at 5:02 AM, Henry <[email protected]> wrote:
> > Hi Guys,
>
> > Im new at Google App Engine, I've the follow problem:
> > When Im recovering a persistent class Announcer, it has one field
> > (country) with NO VALUE...I thought that must to be for a bad mapping
> > with the annotations creating the proper class, but I don't know how
> > to do to get again the Key that I've stored. When Im storing the Key
> > (country), it has value, I can see it in the Google App Engine
> > DataViewer.
> > This is my class with the annotations:
>
> > @PersistenceCapable(identityType = IdentityType.APPLICATION)
> > public class Announcer {
>
> > �...@primarykey
> > �...@persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
> > private Long id;
> > �...@persistent
> > private String emailAddress;
> > �...@persistent
> > private String password;
> > �...@persistent
> > private String firstName;
> > �...@persistent
> > private String lastName;
> > �...@persistent
> > private Key country;
>
> > Anyone could help me?
> > Im using Java and JDO.
> > Thanks for advance.
>
> > --
>
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>
> --
> Ikai Lan
> Developer Programs Engineer, Google App Engine
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