Java – validation does not apply to nested objects in play framework 2

I'm using constraint annotation to verify the objects in play! Frame 2 It applies to top - level objects, but not nested objects How do I make nested object validation comments effective?

Event: top level object I am saving

@Entity
public class Event {

    @required
    public String name;

    @OneToMany(cascade = CascadeType.ALL)
    public List<Option> options;

    ...
}

Options: nested objects It has no validation name attribute

@Entity
public class Option {

    @required
    public String name;

    ...
}

Solution

I'm not familiar with play, but it looks very close to javax Validation, you need to put @ valid on your option field to tell the verifier to enter the relationship Play has its own @ valid, so I'll give it a shot

Update: as OP pointed out, the above is play 1.0 On the contrary, according to play 2.0 docs, which uses spring data binding and jsr-303, how to use javax What about the validation @ valid annotation? Maybe play 1.0 has a self-made verification framework, and they decided to turn to javax in 2.0 validation？ This explains why several validation comments seem to have disappeared in the 2.0 API