Cloning JPA entity

Question

I have a JPA entity already persisted in the database.
I would like to have a copy of it (with a different id), with some fields modified.

What is the easiest wa

Answer 1

ModelMapper lib can be used for this purpose.

public MyEntity clone(MyEntity myInstance) {
    MyEntity newInstance = new MyEntity();
    new ModelMapper().map(myInstance, newInstance);
    return newInstance;
}

just add the maven dependency

    org.modelmapper
    modelmapper
    2.3.2