Hibernate:@ EmbeddedId,Inheritance和@SecondaryTable

Question

我正在使用带有注释的Hibernate版本3.3.2.GA.

我有两个类之间的继承,前者:

@Entity
@Table(name = "SUPER_CLASS")
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(
    name="DISCR_TYPE",
    discriminatorType= DiscriminatorType.STRING
)
@org.hibernate.annotations.Entity(mutable = false)
public class SuperClass { }

子类与辅助表映射:

@Entity
@DiscriminatorValue("VALUE")
@org.hibernate.annotations.Entity(mutable = false)
@SecondaryTable(name = "V_SECONDARY_TABLE",
        pkJoinColumns = @PrimaryKeyJoinColumn(name = "ID", referencedColumnName = "ID"))
public class SubClass extends SuperClass  { 
 @Embedded
    public Field getField() {
        return getField;
    }
}

场地由两个不同的领域组成

@Embeddable
public class Field { 
 @Column("FIELD_1") String field1
 @Column("FIELD_2") String field2
}

现在,当我在SubClass上创建查询时,在SuperClass上搜索FIELD_1和FIELD_2字段,即使它们是在子类中定义的.

我无法在字段中的@Column注释中设置表,因为它在某处重用了Field类.我需要在SubClass类中指定它.

如何指定应在辅助表中搜索字段？

也在Hibernate论坛上

Answer 1

您应该使用表属性

@Column("FIELD_1", table="V_SECONDARY_TABLE")

UPDATE

当多个实体使用可嵌入列时,如果需要仅重新映射单个列,则应使用@AttributeOverride;如果需要多个列,则应使用@AttributeOverrides

@Entity
@SecondaryTable(name="OTHER_PERSON")
@AttributeOverride(name="address.street", column=@Column(name="STREET", table="OTHER_PERSON"))
public class Person {

    private Address address;

    @Id
    @GeneratedValue
    public Integer getId() { return id; }
    public void setId(Integer id) { this.id = id; }

    @Embedded
    public Address getAddress() { return address; }
    public void setAddress(Address address) { this.address = address; }

    @Embeddable
    public static class Address implements Serializable {

        private String address;

        public String getStreet() { return street; }
        public void setStreet(String street) { this.street = street; }

    }

}