Hi there,
I'm a newbie with GAE, I'm using JPA to access datastore and I'm
having a problem querying datastore.
I have successfully inserted a few record into datastore using JPA but
I can not read them back from datastore.
Following is my code to query datastore.
------------------------------------------------------------------
EntityManager em = EMF.get().createEntityManager();
Query query = em.createQuery("select t from
com.test.dataschema.User_JPA as t");
List<User_JPA> result = query.getResultList();
------------------------------------------------------------------
EMF class definition:
package com.fineart.dataschema;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
public final class EMF {
private static final EntityManagerFactory emfInstance =
Persistence.createEntityManagerFactory("transactions-
optional");
private EMF() {}
public static EntityManagerFactory get() {
return emfInstance;
}
}
------------------------------------------------------------------
I would be so grateful if someone help me out.
Thanks.
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