[英]PetaPoco/NPoco - calculated properties in poco
I am using PetaPoco/NPoco in my project. 我在我的项目中使用PetaPoco / NPoco。 The database schema I am working with was not thought our very well and therefore I can't directly bind the POCO to my wpf mvvm view (which is what I used to be able to do when I was also creating the database schema).
我正在使用的数据库架构并不十分理想,因此无法将POCO直接绑定到wpf mvvm视图(这也是我在创建数据库架构时曾经能够执行的操作)。 I am considering two possible solutions to this problem:
我正在考虑针对此问题的两种可能的解决方案:
Does a proven pattern exist for this problem? 是否存在针对该问题的可靠模式?
You can manipulate the PetaPoco maps as you wish using ExplicitColumns
to map to a different named column. 您可以根据需要使用
ExplicitColumns
来操作PetaPoco映射,以映射到其他命名列。 You can also use ResultColumn
for properties that you wish to grab from the DB for not update/insert. 您也可以将
ResultColumn
用于希望从数据库中获取的属性,以便不进行更新/插入。 Finally, you can also use unmapped properties for extra work not related to the DB. 最后,您还可以将未映射的属性用于与数据库无关的额外工作。
namespace Site.Models {
[TableName("Hotel")]
[PrimaryKey("HotelID")]
[ExplicitColumns]
public class Hotel {
[PetaPoco.Column("HotelID")]
public int HotelID { get; set; }
[PetaPoco.Column("HotelClaseID")]
public int? HotelClaseID { get; set; }
[ResultColumn]
public string HotelClase { get; set; }
[Required]
[PetaPoco.Column("Nombre")]
public String Nombre { get; set; }
....
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