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我正在使用代码优先方法流式 API 将 sql 表映射到实体，如下所示：

 public class ProjectEntities : DbContext
    {
        public ProjectEntities ()
            : base("name=ProjectEntities ")
        {

        }

        public DbSet<UserEntity> UserEntity { get; set; }
        public DbSet<AddressEntity> AddressEntity { get; set; }


        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {

            modelBuilder.Configurations.Add(new UserEntityMapper());
            modelBuilder.Configurations.Add(new AddressEntityMapper());
    }
}

映射器被定义为：

 public class AddressEntityMapper  : EntityTypeConfiguration<AddressEntity>
    {
        public AddressEntityMapper()
        {
            ToTable("Address");
            HasKey(m => m.AddressID);
            HasRequired(m => m.UserEntity).WithMany(b => b.AddressEntity);
            Property(p => p.AddressKey).HasColumnName("ADDRESSID");
            Property(p => p.UserID).HasColumnName("User_id");

            Property(p => p.Address1).HasColumnName("ADDRESS1");
            Property(p => p.Address2).HasColumnName("ADDRESS2");
            Property(p => p.Address3).HasColumnName("ADDRESS3");
            Property(p => p.City).HasColumnName("CITY");
            Property(p => p.State).HasColumnName("STATE");
            Property(p => p.ZipCode).HasColumnName("ZIPCODE");
}
}

和用户映射器：

public class UserEntityMapper : EntityTypeConfiguration<UserEntity>
    {
        public UserEntityMapper()
        {
            ToTable("User");

            HasKey(m => m.UserID);
            Property(p => p.UserID).HasColumnName("UserID");
            Property(p => p.FirstName).HasColumnName("FIRSTNAME");
            Property(p => p.LastName).HasColumnName("LAST_NAME");
            Property(p => p.MiddleInitial).HasColumnName("MIDDLEINITIAL");
}
}

这东西很好用。现在我们必须改变逻辑来获取信息。现在公司决定使用sql视图来获取完整的用户信息，这样您就可以在一个地方获取用户的所有信息。现在我不想重做/创建另一个映射器来映射来自 sql 视图的两个表的所有字段。

所以我的问题是我们可以声明另一个映射器，它将这两个映射器映射为：

public class UserFullEntityMapper : EntityTypeConfiguration<UserEntity, AddressEntity>
    {
        public UserFullEntityMapper()
        {
            ToTable("vw_user");

            ///Declare the auto mapping here to the fields from above entities to columns retuned from sql view.
}
}

请建议。谢谢

4

1 回答 1

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You should define a new entity for your view:

public class YourViewName
{ 
   // properties from UserEntity
   // properties from AddressEntity
}

And use following mapping:

public View_mapping:EntityTypeConfiguration<YourViewName>
{
   public View_mapping()
   {
      ToTable("vw_user");
      // other mappings
   }
}
于 2014-07-27T13:18:38.587 回答