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Hibernate version: 3.1.2
Mapping documents:
User: (private variables and setters omitted)
Code:
@Entity
@Table(name="users")
@SequenceGenerator(name="seq_users",sequenceName="seq_users")
public class User extends BaseEntity {
@Override
@Id @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="seq_users")
public Long getId() { return super.getId(); }
@Column(nullable=false,unique=true,length=32)
public String getUsername() { return username; }
}
LoginAttempt: (private variables and setters omitted)
Code:
@Entity
@Table(name="login_attempts")
@SequenceGenerator(name="seq_login_attempts",sequenceName="seq_login_attempts")
public class LoginAttempt extends BaseEntity {
@Override
@Id @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="seq_login_attempts")
public Long getId() { return super.getId(); }
@ManyToOne()
@Column(name="user_id",nullable=false)
public User getUser() {
return user;
}
@Column(name="attempted_at")
public Date getAttemptedAt() {
return attemptedAt;
}
@Column(nullable=false)
public boolean isSuccess() {
return success;
}
}
Code between sessionFactory.openSession() and session.close():Code:
Criteria user = session.createCriteria(User.class);
user.setProjection(Projections.rowCount());
System.out.println("User count: "+user.list().get(0));
user.setProjection(null);
List users = user.list();
System.out.println(users.get(0).getClass());
System.out.println((User)users.get(0));
Criteria login = session.createCriteria(LoginAttempt.class);
login.setProjection(Projections.rowCount());
System.out.println("Login count: "+login.list().get(0));
login.setProjection(null);
List logins = login.list();
System.out.println(logins.get(0).getClass());
System.out.println((LoginAttempt)logins.get(0));
Name and version of the database you are using:
RDBMS: Oracle, version: Oracle9i Enterprise Edition Release 9.2.0.6.0 - Production
JDBC driver: Oracle JDBC driver, version: 10.1.0.2.0
When I run the code above, the line where I try to cast to LoginAttempt throws a class cast exception. Here is what the output is:
User count: 9
class my.package.model.User
my.package.model.User[1]
Login count: 19
class [Ljava.lang.Object;
As you can see, the User works ok, I can cast it to a User object, even after using the projection. But the LoginAttempt, I cannot. Is this a bug or can I not use projections in this way? Why does it work with User but not LoginAttempt?
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