C# 对象中对象的NHibernate refresh()
我的数据库有一个带有NHibernate的WPF应用程序。现在我有了一个Customer对象,它包含一个Address对象 客户类别C# 对象中对象的NHibernate refresh(),c#,wpf,nhibernate,C#,Wpf,Nhibernate,我的数据库有一个带有NHibernate的WPF应用程序。现在我有了一个Customer对象,它包含一个Address对象 客户类别 public class Customer:ObjectBase { #region Variables private int _id; private string _name; private Address _address; private string _vat; #endregion #reg
public class Customer:ObjectBase
{
#region Variables
private int _id;
private string _name;
private Address _address;
private string _vat;
#endregion
#region Properties
public virtual int Id
{
get { return _id; }
set
{
_id = value;
OnPropertyChanged("Id");
}
}
public virtual string Name
{
get { return _name; }
set
{
_name = value;
OnPropertyChanged("Name");
}
}
public virtual Address Address
{
get
{
if (_address == null)
_address = new Address();
return _address;
}
set
{
_address = value;
OnPropertyChanged("Address");
}
}
public virtual string Vat
{
get
{
return _vat;
}
set
{
_vat = value;
OnPropertyChanged("Vat");
}
}
#endregion
}
public class Address:ObjectBase
{
#region Variables
private int _id;
private string _street;
private string _number;
private string _city;
private string _zip;
private string _country;
private Customer _customer;
#endregion
#region Properties
/// <summary>
/// Het unieke ID van een Address zoals deze in de database staat
/// </summary>
public virtual int Id
{
get
{
return _id;
}
set
{
_id = value;
OnPropertyChanged("Id");
}
}
/* ... all other properties ...*/
}
...
地址类
public class Customer:ObjectBase
{
#region Variables
private int _id;
private string _name;
private Address _address;
private string _vat;
#endregion
#region Properties
public virtual int Id
{
get { return _id; }
set
{
_id = value;
OnPropertyChanged("Id");
}
}
public virtual string Name
{
get { return _name; }
set
{
_name = value;
OnPropertyChanged("Name");
}
}
public virtual Address Address
{
get
{
if (_address == null)
_address = new Address();
return _address;
}
set
{
_address = value;
OnPropertyChanged("Address");
}
}
public virtual string Vat
{
get
{
return _vat;
}
set
{
_vat = value;
OnPropertyChanged("Vat");
}
}
#endregion
}
public class Address:ObjectBase
{
#region Variables
private int _id;
private string _street;
private string _number;
private string _city;
private string _zip;
private string _country;
private Customer _customer;
#endregion
#region Properties
/// <summary>
/// Het unieke ID van een Address zoals deze in de database staat
/// </summary>
public virtual int Id
{
get
{
return _id;
}
set
{
_id = value;
OnPropertyChanged("Id");
}
}
/* ... all other properties ...*/
}
...
但这会刷新除Customer对象中Address对象的值之外的所有属性。是否有方法刷新地址值
我试过了
NHibernateHelper.Session.Refresh(Customer.Address);
但这不起作用。。。
有没有人能解释或解决这个问题
编辑:可能的解决方案 当我按照下面的顺序执行它时,它给出了对象的整个默认值
NHibernateHelper.Session.Refresh(Customer.Address);
NHibernateHelper.Session.Refresh(Customer);
但是我不知道为什么按那个顺序调用刷新函数会使它工作。这对我来说没关系,但你知道为什么必须按这个顺序吗?有时候,对于NHibernate,我必须重置会话并清除第二个缓存来解决问题,在我选择获取数据后:
public static void ClearCache(this ISessionFactory sessionFactory)
{
sessionFactory.EvictQueries();
foreach (var collectionMetadata in sessionFactory.GetAllCollectionMetadata())
sessionFactory.EvictCollection(collectionMetadata.Key);
foreach (var classMetadata in sessionFactory.GetAllClassMetadata())
sessionFactory.EvictEntity(classMetadata.Key);
}
你能为你的关系提供映射文件吗?我也会试试你的功能。但我注意到(为什么我没有先尝试,我不知道…)当我执行时:NHibernateHelper.Session.Refresh(Customer.Address);首先和之后执行:NHibernateHelper.Session.Refresh(Customer);它确实给了我默认值。我可以这样做,但是你知道为什么会这样吗?嗯,不知道,可能是你的地图或者其他什么。这就是我不太喜欢NHibernate的原因,我对请求和其他东西没有足够的控制权。但是,这是一个非常好的框架。