Dapper ORM 多层嵌套对象
Dapper ORM multiple level nested object
我正在尝试 return SQL 使用具有嵌套对象的 Dapper ORM 服务器数据,到目前为止,这就是我正在做的事情
型号class
public class CustomerAll
{
public string KODELANG { get; set; }
public string GRUPLANG { get; set; }
public string NAMALANG { get; set; }
public string ALAMAT { get; set; }
public string STATUS { get; set; }
public List<NoDiscount> DISC_ACTIVE { get; set; }
}
public class NoDiscount
{
public string NO_DISC { get; set; }
public List<ProductDiscount> LIST_PRODUCT{ get; set; }
}
public class ProductDiscount
{
public string KODEPROD{ get; set; }
}
原始查询
SELECT CUSTOMER.KODELANG
,CUSTOMER.GRUPLANG
,CUSTOMER.NAMALANG
,CUSTOMER.ALAMAT
,CUSTOMER.STATUS
,DISCOUNT.NO_DISC
,PRODUCT.KODEPROD
FROM CUST_TABLE CUSTOMER, DCNT_TABLE DISCOUNT, PRODUCT_TABLE PRODUCT
WHERE CUSTOMER.KODELANG = DISCOUNT.KODELANG
AND DISCOUNT.NO_DISC = PRODUCT.NO_DISC
AND CUSTOMER.KODELANG = @CustNum
控制器class
var parameters = new { CustNum = customerNumber };
var lookup = new Dictionary<string, CustomerAll>();
con.Query<CustomerAll, NoDiscount, ProductDiscount, CustomerAll>(
querySql,
(c, n, p) =>
{
CustomerAll customer;
if (!lookup.TryGetValue(c.KODELANG, out customer))
{
lookup.Add(c.KODELANG, customer = c);
}
if (customer.DISC_ACTIVE == null)
{
customer.DISC_ACTIVE = new List<NoDiscount>();
}
if (p != null)
{
if (n.LIST_PRODUCT == null)
{
n.LIST_PRODUCT = new List<ProductDiscount>();
}
n.LIST_PRODUCT.Add(p);
}
customer.DISC_ACTIVE.Add(n);
return customer;
}
,parameters
,splitOn: "KODELANG, NO_DISC, KODEPROD");
return Ok(lookup.Values);
下面是回复 returned
[
{
"KODELANG": "101308",
"GRUPLANG": "22",
"NAMALANG": "Name Example",
"ALAMAT": "Street number 4",
"STATUS": "A",
"DISC_ACTIVE": [
{
"NO_DISC": "DISC/1021/0001",
"LIST_PRODUCT": [
{
"KODEPROD": "TLBCA"
}
]
},
{
"NO_DISC": "DISC/1021/0001",
"LIST_PRODUCT": [
{
"KODEPROD": "TLBCB"
}
]
},
{
"NO_DISC": "DISC/3304/0009",
"LIST_PRODUCT": [
{
"KODEPROD": "ZVKAA"
}
]
}
]
}
]
我想要的是像这样return
[
{
"KODELANG": "101308",
"GRUPLANG": "22",
"NAMALANG": "Name Example",
"ALAMAT": "Street number 4",
"STATUS": "A",
"DISC_ACTIVE": [
{
"NO_DISC": "DISC/1021/0001",
"LIST_PRODUCT": [
{
"KODEPROD": "TLBCA"
},
{
"KODEPROD": "TLBCB"
},
{
"KODEPROD": "TLBCC"
}
]
},
{
"NO_DISC": "DISC/3304/0001",
"LIST_PRODUCT": [
{
"KODEPROD": "ZVKAA"
}
]
}
]
}
]
如果 NO_DISC 相同,我不想再次添加 LIST_PRODUCT
试试这个,注意同一个 NoDiscount 对象可能在不同的客户中有重复的副本。
var parameters = new { CustNum = customerNumber };
var customDict = new Dictionary<string, CustomerAll>();
con.Query<CustomerAll, NoDiscount, ProductDiscount, CustomerAll>(
querySql,
(c, n, p) =>
{
CustomerAll customer = null;
if (customDict.ContainsKey(c.KODELANG))
{
customer = customDict[c.KODELANG];
}
else
{
var customerObj = new CustomerAll()
{
KODELANG = c.KODELAN,
DISC_ACTIVE = new List<NoDiscount>()
};
customDict.Add(c.KODELANG, customerObj);
};
NoDiscount noDiscount = customer.DISC_ACTIVE.FirstOrDefault(x => x.NO_DISC == n.NO_DISC);
if (noDiscount ==null)
{
var noDiscountObj = new NoDiscount()
{
NO_DISC = n.NO_DISC,
LIST_PRODUCT = new List<ProductDiscount>()
};
noDiscount = noDiscountObj;
customer.DISC_ACTIVE.Add(noDiscountObj);
}
if (p != null && !noDiscount.LIST_PRODUCT.Contains(x=>x.KODEPROD==p.KODEPROD))
{
noDiscount.LIST_PRODUCT.Add(p);
}
return customer;
}
, parameters
, splitOn: "KODELANG, NO_DISC, KODEPROD");
return Ok(customDict.Values);
我正在尝试 return SQL 使用具有嵌套对象的 Dapper ORM 服务器数据,到目前为止,这就是我正在做的事情
型号class
public class CustomerAll
{
public string KODELANG { get; set; }
public string GRUPLANG { get; set; }
public string NAMALANG { get; set; }
public string ALAMAT { get; set; }
public string STATUS { get; set; }
public List<NoDiscount> DISC_ACTIVE { get; set; }
}
public class NoDiscount
{
public string NO_DISC { get; set; }
public List<ProductDiscount> LIST_PRODUCT{ get; set; }
}
public class ProductDiscount
{
public string KODEPROD{ get; set; }
}
原始查询
SELECT CUSTOMER.KODELANG
,CUSTOMER.GRUPLANG
,CUSTOMER.NAMALANG
,CUSTOMER.ALAMAT
,CUSTOMER.STATUS
,DISCOUNT.NO_DISC
,PRODUCT.KODEPROD
FROM CUST_TABLE CUSTOMER, DCNT_TABLE DISCOUNT, PRODUCT_TABLE PRODUCT
WHERE CUSTOMER.KODELANG = DISCOUNT.KODELANG
AND DISCOUNT.NO_DISC = PRODUCT.NO_DISC
AND CUSTOMER.KODELANG = @CustNum
控制器class
var parameters = new { CustNum = customerNumber };
var lookup = new Dictionary<string, CustomerAll>();
con.Query<CustomerAll, NoDiscount, ProductDiscount, CustomerAll>(
querySql,
(c, n, p) =>
{
CustomerAll customer;
if (!lookup.TryGetValue(c.KODELANG, out customer))
{
lookup.Add(c.KODELANG, customer = c);
}
if (customer.DISC_ACTIVE == null)
{
customer.DISC_ACTIVE = new List<NoDiscount>();
}
if (p != null)
{
if (n.LIST_PRODUCT == null)
{
n.LIST_PRODUCT = new List<ProductDiscount>();
}
n.LIST_PRODUCT.Add(p);
}
customer.DISC_ACTIVE.Add(n);
return customer;
}
,parameters
,splitOn: "KODELANG, NO_DISC, KODEPROD");
return Ok(lookup.Values);
下面是回复 returned
[
{
"KODELANG": "101308",
"GRUPLANG": "22",
"NAMALANG": "Name Example",
"ALAMAT": "Street number 4",
"STATUS": "A",
"DISC_ACTIVE": [
{
"NO_DISC": "DISC/1021/0001",
"LIST_PRODUCT": [
{
"KODEPROD": "TLBCA"
}
]
},
{
"NO_DISC": "DISC/1021/0001",
"LIST_PRODUCT": [
{
"KODEPROD": "TLBCB"
}
]
},
{
"NO_DISC": "DISC/3304/0009",
"LIST_PRODUCT": [
{
"KODEPROD": "ZVKAA"
}
]
}
]
}
]
我想要的是像这样return
[
{
"KODELANG": "101308",
"GRUPLANG": "22",
"NAMALANG": "Name Example",
"ALAMAT": "Street number 4",
"STATUS": "A",
"DISC_ACTIVE": [
{
"NO_DISC": "DISC/1021/0001",
"LIST_PRODUCT": [
{
"KODEPROD": "TLBCA"
},
{
"KODEPROD": "TLBCB"
},
{
"KODEPROD": "TLBCC"
}
]
},
{
"NO_DISC": "DISC/3304/0001",
"LIST_PRODUCT": [
{
"KODEPROD": "ZVKAA"
}
]
}
]
}
]
如果 NO_DISC 相同,我不想再次添加 LIST_PRODUCT
试试这个,注意同一个 NoDiscount 对象可能在不同的客户中有重复的副本。
var parameters = new { CustNum = customerNumber };
var customDict = new Dictionary<string, CustomerAll>();
con.Query<CustomerAll, NoDiscount, ProductDiscount, CustomerAll>(
querySql,
(c, n, p) =>
{
CustomerAll customer = null;
if (customDict.ContainsKey(c.KODELANG))
{
customer = customDict[c.KODELANG];
}
else
{
var customerObj = new CustomerAll()
{
KODELANG = c.KODELAN,
DISC_ACTIVE = new List<NoDiscount>()
};
customDict.Add(c.KODELANG, customerObj);
};
NoDiscount noDiscount = customer.DISC_ACTIVE.FirstOrDefault(x => x.NO_DISC == n.NO_DISC);
if (noDiscount ==null)
{
var noDiscountObj = new NoDiscount()
{
NO_DISC = n.NO_DISC,
LIST_PRODUCT = new List<ProductDiscount>()
};
noDiscount = noDiscountObj;
customer.DISC_ACTIVE.Add(noDiscountObj);
}
if (p != null && !noDiscount.LIST_PRODUCT.Contains(x=>x.KODEPROD==p.KODEPROD))
{
noDiscount.LIST_PRODUCT.Add(p);
}
return customer;
}
, parameters
, splitOn: "KODELANG, NO_DISC, KODEPROD");
return Ok(customDict.Values);