appengine

Error in meta-data for com.google.gwt.homepage.lovelicense.server.GuestBookAnswerTable.id: Cannot have a java.lang.Long primary key and be a child object (owning field is com.google.gwt.homepage.lovelicense.server.GuestBookTable.answer).

1:n관계등을 표현할 때는 Key or 인코딩된 Key만 사용가능하다.