Entity\CourseRelClass:
  type: entity
  table: course_rel_class
  repositoryClass: Entity\Repository\CourseRelClassRepository
  fields:
    course_code:
      id: true
      type: string
      length: 40
      fixed: true
      nullable: false
    class_id:
      id: true
      type: integer
      unsigned: false
      nullable: false
  lifecycleCallbacks:
    prePersist:
      - before_save