Entity\Notification:
  type: entity
  table: notification
  repositoryClass: Entity\Repository\NotificationRepository
  fields:
    id:
      id: true
      type: bigint
      nullable: false
      generator:
        strategy: IDENTITY
    dest_user_id:
      type: integer
      unsigned: false
      nullable: false
    dest_mail:
      type: string
      length: 255
      fixed: true
      nullable: true
    title:
      type: string
      length: 255
      fixed: true
      nullable: true
    content:
      type: string
      length: 255
      fixed: true
      nullable: true
    send_freq:
      type: smallint
      nullable: true
    created_at:
      type: datetime
      nullable: false
    sent_at:
      type: datetime
      nullable: true
  lifecycleCallbacks:
    prePersist:
      - before_save