@NamedNativeQuery - 如何将其绑定到存储库方法？

Question

我正在使用Spring+ Hibernate并且我有一个特殊情况,我需要获取(一个列表)非Entity对象作为查询的结果.

我决定使用@ConstructorResultin @SqlResultSetMapping并参考此映射@NamedNativeQuery,如此处和此处所述.

然而,在使用命名原生查询所有案例中,他们获得EntityManager通过实例@PersistenceContext并调用createNativeQuery就可以了,提供name的@NamedNativeQuery作为参数传递给该呼叫,如在此回答.

如何将存储库中声明的方法映射interface到特定的@NamedNativeQuery？我的尝试是使用EntityName.MethodNameInRepository或MethodNameInRepository作为name的@NamedNativeQuery,但没有运气.

这是我的简化代码:

@Entity(name = "AdDailyData")
@SqlResultSetMapping(
        name="RevenueByAppAndDayMapping",
        classes=@ConstructorResult(
                targetClass=RevenueByAppAndDay.class,
                columns={@ColumnResult(name="country_code"),
                        @ColumnResult(name="revenue", type=Double.class),
                        @ColumnResult(name="currency")}))
@NamedNativeQuery(
        name="AdDailyData.aggregateRevenue",
        query="SELECT country_code, sum(earnings) as revenue, currency "
                + "FROM ad_daily_data, pseudo_app, app "
                + "WHERE ad_daily_data.pseudo_app_id=pseudo_app.id AND pseudo_app.app_id=app.id AND app.id=:appId and ad_daily_data.day = :day "
                + "GROUP BY country_code, currency "
                + "ORDER BY country_code ASC",
        resultSetMapping="RevenueByAppAndDayMapping")
public class AdDailyDataEntity {

    // fields, getters, setters etc.

    public static interface Repository extends JpaRepository<AdDailyDataEntity, Long> {

        public List<RevenueByAppAndDay> aggregateRevenue(@Param("appId") long appId, @Param("day") LocalDate day);

    }

}

这是我的非Entity全班.

public class RevenueByAppAndDay {

    private String countryCode;
    private Double earnings;
    private String currency;

    public RevenueByAppAndDay(String countryCode, Double earnings, String currency) {
        this.countryCode = countryCode;
        this.earnings = earnings;
        this.currency = currency;
    }

    public String getCountryCode() {
        return countryCode;
    }

    public Double getEarnings() {
        return earnings;
    }

    public String getCurrency() {
        return currency;
    }

}

任何形式的帮助都非常感谢.

编辑: 堆栈跟踪的结束如下:

Caused by: org.springframework.data.mapping.PropertyReferenceException: No property aggregateRevenue found for type AdDailyDataEntity!

Answer 1

需要设置的name值.第一部分(在点之前)需要匹配实体类名称.@NamedNativeQuery"AdDailyDataEntity.aggregateRevenue"