6.4.2 映射策略--外键关联

在数据库中，对应的表customer和表address定义的结构SQL语句仍与本章6.3.3小节中定义的SQL语句相同。.

此时将表address映射为AddressEO实体，代码如下所示。

@Entity

@Table(name = "address")

public class AddressEO implements java.io.Serializable {

         private CustomerEO customer;

 

         @ManyToOne(cascade = {CascadeType.ALL} )

         @JoinColumn(name="customer_id")

         public CustomerEO getCustomer() {

                   return customer;

         }

 

         public void setCustomer(CustomerEO customer) {

                   this.customer = customer;

         }

}