Is it possible to detach Hibernate entity, so that changes to object are not automatically saved to database?

Question

I have Hibernate entity that I have to convert to JSON, and I have to translate some values in entity, but when I translate values, these values are instantly saved to datab

Answer 1

public static  E deepClone(E e) {
    ByteArrayOutputStream bo = new ByteArrayOutputStream();
    ObjectOutputStream oo;
    try {
        oo = new ObjectOutputStream(bo);
        oo.writeObject(e);
    } catch (IOException ex) {
        ex.printStackTrace();
    }
    ByteArrayInputStream bi = new ByteArrayInputStream(bo.toByteArray());
    ObjectInputStream oi;
    try {
        oi = new ObjectInputStream(bi);
        return (E) (oi.readObject());
    } catch (IOException ex) {
        ex.printStackTrace();
        return null;
    } catch (ClassNotFoundException ex) {
        ex.printStackTrace();
        return null;
    }
}

first: deepClone the session pojo
second: alter fields
then: do whatever you want to do