I have this one level tree situation: <select ng-model="tipost" ng-options="tip.DESC group by tip.TIPIS for tip in tipall"><br> </select> where the json is: [ {"ID":"1",...

could someone help me to understand how can I define an entity with JPA mapping that has a relation with it self? For example, my entity is CompanyDivision, divisionA contains divisionB, divisionC...