2

这是我域中的三个类:

public class Quote : IEntity, IAggregateRoot {
    public int QuoteId { get; set; }
    public IEnumerable<Price> Prices { get; set; }
}

public class Price : IEntity {
    public int PriceId { get; set; }
    public Carrier Carrier { get; set; }
    public decimal? Price { get; set; }
    public Quote Quote { get; set; }
}

public class Carrier : IEntity, IAggregateRoot {
    public int CarrierId { get; set; }
    public string Name { get; set; }
}

我希望能够根据报价单中的价格选择一个预测。返回类型应为 IEnumerable<[anonymous object]>。我必须从 Quote 开始查询,因为它是根域对象。这是我到目前为止所拥有的:

session.Linq<Quote>()
    .Expand("Prices")
    .Where(q => q.QuoteId == 1)
    .Select(q => {
        //this is where I don't know what to do.
        //Maybe somthing like this:
        return q.Prices.Select(p => {
            new { CustomerName = p.Customer.Name, Price = p.Price }
        });
    });

映射将是:

  • Quote.Prices > HasMany(一对多)
  • Price.Quote > 参考资料(多对一)
  • Price.Carrier > 参考资料(一对一)
4

1 回答 1

2

我找到了我的答案。我完全忘记了 SelectMany Linq 表达式。这是我的解决方案。

session.Linq<Quote>()
    .Where(q => q.QuoteId == 1)
    .SelectMany(q => q.Prices, (q, p) => new { CustomerName = p.Customer.Name });
于 2010-02-16T17:55:01.470 回答