nHibernate 标准 API 投影

发布于 2024-07-25 17:58:37 字数 986 浏览 8 评论 0原文

我有一个像这样的实体

public class Customer 
{
    public Customer() { Addresses = new List<Address>(); }
    public int CustomerId { get; set; }
    public string Name { get; set; }
    public IList<Address> Addresses { get; set; }
}

我正在尝试使用像这样的 Criteria API 来查询它。

ICriteria query = m_CustomerRepository.Query()
    .CreateAlias("Address", "a", NHibernate.SqlCommand.JoinType.LeftOuterJoin);
var result = query
  .SetProjection(Projections.Distinct(
    Projections.ProjectionList()
      .Add(Projections.Alias(Projections.Property("CustomerId"), "CustomerId"))
      .Add(Projections.Alias(Projections.Property("Name"), "Name"))
      .Add(Projections.Alias(Projections.Property("Addresses"), "Addresses"))
    ))
  .SetResultTransformer(new AliasToBeanResultTransformer(typeof(Customer)))
  .List<Customer>() as List<Customer>;

当我运行此查询时,Customer 对象的 Addresses 属性为 null。 是否有办法为此 List 属性添加投影?

I have an entity that is like this

public class Customer 
{
    public Customer() { Addresses = new List<Address>(); }
    public int CustomerId { get; set; }
    public string Name { get; set; }
    public IList<Address> Addresses { get; set; }
}

And I am trying to query it using the Criteria API like this.

ICriteria query = m_CustomerRepository.Query()
    .CreateAlias("Address", "a", NHibernate.SqlCommand.JoinType.LeftOuterJoin);
var result = query
  .SetProjection(Projections.Distinct(
    Projections.ProjectionList()
      .Add(Projections.Alias(Projections.Property("CustomerId"), "CustomerId"))
      .Add(Projections.Alias(Projections.Property("Name"), "Name"))
      .Add(Projections.Alias(Projections.Property("Addresses"), "Addresses"))
    ))
  .SetResultTransformer(new AliasToBeanResultTransformer(typeof(Customer)))
  .List<Customer>() as List<Customer>;

When I run this query the Addresses property of the Customer object is null. Is there anyway to add a projection for this List property?

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权谋诡计 2024-08-01 17:58:37

代码看起来不错。 因此问题可能出在 Addresses 属性的映射中。

The code seems to be good. So the problem can be in the mapping for the Addresses property.

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