小编Maj*_*jid的帖子

我有一个Client bean,

@DatabaseField(columnName = "client_id",generatedId = true,useGetSet = true)
private Integer clientId;
@DatabaseField(columnName = "client_nom",useGetSet = true)
private String clientNom;
@DatabaseField(columnName = "city_id",foreign = true,useGetSet = true)
private City city;

和一个城市豆,

@DatabaseField(columnName = "city_id",generatedId = true,useGetSet = true)
private Integer cityId;
@DatabaseField(columnName = "city_name",useGetSet = true)
private String cityName;
@ForeignCollectionField
private ForeignCollection<Client> clientList;

那些豆只是一个例子,但是我想说,我想在删除城市时删除所有拥有外国城市cityId的客户.

请问怎么可能？