[英]EF5 db.Database.SqlQuery mapping returned objects
我有两个C#类
public class SearchResult
{
public int? EntityId { get; set; }
public string Name { get; set; }
public Address RegisteredAddress { get; set; }
}
和
public class Address
{
public int? AddressId { get; set; }
public string Address1 { get; set; }
public string Address2 { get; set; }
public string Address3 { get; set; }
}
这在dbContext调用中用于通过EF5从数据库中映射返回的对象
using (DbEntities db = new DbEntities())
{
querySearchResult = db.Database.SqlQuery<SearchResult>(
@"SELECT e.entity_id AS EntityId, e.entity_reg_name AS Name,
a.address_1 AS [RegisteredAddress.Address1]
FROM
entity AS e
LEFT JOIN address AS a ON e.entity_reg_addr_id = a.address_id",
objectParameterList.ToArray()).ToList();
}
我遇到的问题是,即使返回了地址数据,我似乎也无法映射地址对象。 searchResult地图的其他属性很好。
SqlQuery不支持Complex Type
你应该做的是:
internal class TempResult
{
public int? EntityId { get; set; }
public string Name { get; set; }
public int? AddressId { get; set; }
public string Address1 { get; set; }
public string Address2 { get; set; }
public string Address3 { get; set; }
}
var tempResults = db.Database.SqlQuery<TempResult>(
@"SELECT e.entity_id AS EntityId, e.entity_reg_name AS Name,
a.address_1 AS [RegisteredAddress.Address1]
FROM
entity AS e
LEFT JOIN address AS a ON e.entity_reg_addr_id = a.address_id",
objectParameterList.ToArray()).ToList();
querySearchResult = tempResults.Select(t => new SearchResult
{
EntityId = t.EntityId,
[...]
RegisteredAddress = new Address
{
AddressId = t.AddressId,
[...]
}
}
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