Mybatis and invalid types
Did you define the Person class as abstract?
This is not PostgreSQL or MyBatis issue in my opinion. The VM can't create instance of Person, but constructor args & types is correct.
Caused by: java.lang.InstantiationExceptionat sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:30)
Try removing the "abstract" and
public Plugin(int id, String name) { this.id = id; this.name = name;}From the class