all-delete-orphan

问题 Hi i have Department entity ,In that department entity I have property's called department name In string datatype and another property parentdepartment as department datatype(Class Type) as the foreign key to that column.And I have used one-to -one relation ship and cascade type is orphan-delete.If delete My parent department I don't want to delete child department for that reason I have used orphan-delete here but it is giving an exception as following. Exception SEVERE: Cannot delete or

问题 Hi i have Department entity ,In that department entity I have property's called department name In string datatype and another property parentdepartment as department datatype(Class Type) as the foreign key to that column.And I have used one-to -one relation ship and cascade type is orphan-delete.If delete My parent department I don't want to delete child department for that reason I have used orphan-delete here but it is giving an exception as following. Exception SEVERE: Cannot delete or