Querying on enum's method in Hiberate Criteria API

Question

I have an @Entity which has an @Enumerated field mapped to it:

@Entity
@Table
public class Device implements Serializable {

    @I         


        

Answer 1

You have anotated it as

@Enumerated(EnumType.STRING)

this will store the name of the enum. Your db column will have either "MOBILE" or "EMAIL" but not 'true' or 'false'. you can change your query to

 return factory.getCurrentSession().createCriteria(Device.class).
   add(Restrictions.eq("typeOfDevice", DeviceType.MOBILE)).list();

Its more reable isn't?

Answer 2

It seems like a solution to your problem might be along the lines of:

Criteria criteria = factory.getCurrentSession().createCriteria(Device.class);
Disjunction or = Restrictions.disjunction();

for (DeviceType type : DeviceType.values()) {
    if (type.isFubar()) {
        or.add(Restrictions.eq("typeOfDevice", type));
    }
}

criteria.add(or);

return criteria;

Instead of doing where typeOfDevice.fubar = true, we're approaching it more along the lines of where (typeOfDevice = Mobile OR typeOfDevice = OtherFubar OR typeOfDevice = OtherOtherFubar). I realize this isn't the one-liner you were originally shooting for, but I think it answers the question as asked.