MyBatis——@Result注解column参数传递多个参数

问题描述

@Result注解column参数传递多个参数。

官方文档

property description
column 数据库的列名或者列标签别名。与传递给resultSet.getString(columnName)的参数名称相同。注意: 在处理组合键时,您可以使用column=“{prop1=col1,prop2=col2}”这样的语法,设置多个列名传入到嵌套查询语句。这就会把prop1和prop2设置到目标嵌套选择语句的参数对象中。

解决方案

@Mapper
public interface  OrdersMapper {
 
  @SelectProvider(type=BillProvider.class , method="queryBillDetail")
 
    @Results({
    @Result(id=true,column="id",property="id"),
    @Result(column="order_num",property="orderNum"),
    @Result(column="{orderId=id,sourceId=source_id}",javaType=BigDecimal.class,property="cbpFee",many=@Many(select="com.ecloud.hobay.orders.service.infrastructure.mapper.wallet.WalletDetailMapper.getchangeFee"))
    })
    Bill queryBillDetail(QureryBillParams qureryBillParams) throws Exception;
 
}
 
 
 
@Mapper
public interface WalletDetailMapper {
 
@Select({"SELECT ABS(changes) changes from wallet_detail WHERE  biz_type=1 AND category=1 AND (source_id = #{orderId} or source_id = #{sourceId}) ORDER BY create_time LIMIT 1"})
BigDecimal getchangeFee(Map<String,Object> param);
 
 
}

参考文章

https://blog.csdn.net/BL_Endian/article/details/76013843

https://blog.csdn.net/weixin_34055787/article/details/91890168

https://blog.csdn.net/weixin_43297055/article/details/93635950

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转载自blog.csdn.net/qq_43985303/article/details/131221991