I have two entity below:
@Entity
public class Task {
...
@ManyToOne
private User user;
...
}
@Entity
public class User {
private String firstName;
private String lastName;
@OneToMany(mappedBy = "task")
private Set<Task> task;
...
}
How can I using Sort to Sort Task by firstName of User with User is null on top?
I have try Sort.by(Sort.Order.asc("user.firstName").nullsFirst());
But I got the error: NullpointerException
You can create something like this.
Criteria criteria = ...;
criteria.addOrder( Order.asc( "firstName" ).nulls(NullPrecedence.FIRST) );
for more information you can check this documentation.
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