Nhibernate t正在工作，我在类似场景中多次使用它。我可以用粗体字询问什么是aliasToDeepTransformer？@Rippo它是一个IResultTransformer实现，可以设置嵌套对象的属性。我现在可能会使用地图绘制器或其他方法来完成这项工作。您好，谢谢

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t正在工作，我在类似场景中多次使用它。我可以用粗体字询问什么是

aliasToDeepTransformer

？@Rippo它是一个IResultTransformer实现，可以设置嵌套对象的属性。我现在可能会使用地图绘制器或其他方法来完成这项工作。您好，谢谢您的回复。查询会比另一个primaryaddress对象更快吗？我想会的，但你的想法是什么请检查更新的查询。我必须遍历所有地址来填充primaryaddress1、primarycity和state字段。这个循环使操作变慢了。有更好的方法吗？@JamieIde我已经用nhibernate查询而不是fluent nhibernate更新了查询。这是工作，但我希望是可以写流利的nhibernate查询与项目一致。。

public class Customer
{
    public Customer()
    {
        Addressess = new List<Address>();
    }
   public virtual int CustomerID { get; set; }
    public virtual int? BranchID { get; set; }
    public virtual int? CustTypeID { get; set; }
    public virtual string CompanyName { get; set; }
    public virtual string Prefix { get; set; }
    public virtual string FirstName { get; set; }
    public virtual string MiddleName { get; set; }
    public virtual string LastName { get; set; }
    public virtual string PrimaryAddress1 { get; set; }
    public virtual string PrimaryCity { get; set; }
    public virtual List<Address> Addresses { get; set; }
}


public class Address
{
    public Address()
    {
    }
    public virtual int LocationID { get; set; }
    public virtual int? CustomerID { get; set; }
    public virtual string LocationName { get; set; }
    public virtual string Address1 { get; set; }
    public virtual string Address2 { get; set; }
    public virtual string Address3 { get; set; }
    public virtual string City { get; set; }
    public virtual bool Primary { get; set; }
}

public TblCustomerMap()
{
    Table("tblCustomers");
    LazyLoad();
    Id(x => x.CustomerID).GeneratedBy.Identity().Column("CustomerID");
    Map(x => x.ProfileID).Column("ProfileID");
    Map(x => x.BranchID).Column("BranchID");
    Map(x => x.DateEntered).Column("DateEntered");
    Map(x => x.DateTerminated).Column("DateTerminated");
    Map(x => x.CustTypeID).Column("CustTypeID");
    Map(x => x.CompanyName).Column("CompanyName").Not.Nullable().Length(50);
    Map(x => x.Prefix).Column("Prefix").Not.Nullable().Length(50);
    Map(x => x.FirstName).Column("FirstName").Not.Nullable().Length(50);
    Map(x => x.MiddleName).Column("MiddleName").Not.Nullable().Length(50);
    Map(x => x.LastName).Column("LastName").Not.Nullable().Length(50);
    HasMany(x => x.Address).KeyColumn("CustomerID");
    Map(x => x.PrimaryAddress1).Column("PrimaryAddress1") // from table tbladdress where address is primary and get data from address1 column
    Map(x => x.PrimaryCity).Column("PrimaryCity") // from table tbladdress where address is primary and get data from city column
}

 var query = session
            .QueryOver<Customer>(() => customer)
            .JoinQueryOver(() => customer.Addresses, () => address)
            .Where(() => address.Primary)
            .List();

        foreach (var customer1 in query)
        {
            customer1.PrimaryAddress1 = customer1.Addresses[0].Address1;
            customer1.PrimaryCity = customer1.Addresses[0].City;
            customer1.PrimaryState = customer1.Addresses[0].StateOrProvince;

        }

  var query = session.Query<Customer>()
            .SelectMany(c => c.Addresses,
                        (c, a) => new {c, a})
            .Where(cust => cust.a.Primary)
            .Select(item => new CustomerView()
                              {
                                 CustomerID = item.c.CustomerID,
                                 CompanyName=  item.c.CompanyName,
                                 FirstName=  item.c.FirstName,
                                  LastName=item.c.LastName,
                                  Address1=item.a.Address1,
                                  Address2=item.a.Address2,
                                 Address3= item.a.Address3,
                                 City= item.a.City,
                                 StateOrProvince= item.a.StateOrProvince
                              });
        return query.ToList();

SELECT ***columns*** FROM [tbladdress] WHERE Primary = true

Join("[viewPrimaryAddress]", 
{
  m.Fetch.Join();
  m.KeyColumn("CustomerID");
  m.Map(t => t.PrimaryAddress1).Column("PrimaryAddress1");
  m.Map(t => t.PrimaryCity).Column("PrimaryCity");
});

<class name="PrimaryAddress" ... where="Primary = true" >

public class PrimaryAddress
{
    public virtual Customer Customer { get; set; }
    public virtual string Address { get; set; }
    public virtual string City { get; set; }
}

public TblPrimaryAddressMap()
{
    Table("tbladdress");
    LazyLoad();
    Where("Primary = 1");
    // Id as AddressId
    References(x => x.Customer).Column("CustomerID");
    Map(x => x.Address).Column("PrimaryAddress1")
    Map(x => x.PrimaryCity).Column("PrimaryCity")
}

public class Customer
{  
   ..
   public virtual PrimaryAddress PrimaryAddress { get; set; }

customer.PrimaryAddress.Address
customer.PrimaryAddress.City

    internal static QueryOver<Company> GetCompanyDtoQuery()
    {
        Address addr = null;
        CompanyDto dto = null;

        var query = QueryOver.Of<Company>()
            .Left.JoinAlias(c => c.Addresses, () => addr)
            .SelectList(list =>
                        {
                            list.Select(c => c.CompanyId).WithAlias(() => dto.CompanyId)
                            list.Select(a -> addr.AddressId).WithAlias(() => dto.AddressId
                            return list;
                        })
            .Where(a => addr.AddressId == null || addr.IsPrimaryAddress)
            .TransformUsing(new AliasToDtoDeepTransformer<CompanyDto>("PrimaryAddress"));
        return query;
    }

            var target = (from c in session.Query<Company>()
                          from a in c.Addresses
                          where a.IsPrimaryAddress
                          select new
                              {
                                  c.CompanyId,
                                  a.Address1
                              })
                .Take(10).ToList();
            Assert.IsTrue(target.Any());

             var target = session.QueryOver<Company>()
                                 .Fetch(c => c.Addresses).Eager
                                 .Take(10).List();
             Assert.IsTrue(target.Any());