C# HashSet vs HashedSet(Iesi):奇怪的行为
今天我在我的领域模型上测试了一些东西,我意识到行为并不是我所期望的 我试图通过创建一个简单的C# HashSet vs HashedSet(Iesi):奇怪的行为,c#,nhibernate,readonly-collection,iesi-collections,C#,Nhibernate,Readonly Collection,Iesi Collections,今天我在我的领域模型上测试了一些东西,我意识到行为并不是我所期望的 我试图通过创建一个简单的客户订单模型来隔离问题 这是我的地图 客户: <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"> <class xmlns="urn:nhibernate-mapping-2.2" name="NHVariousTests.Domain.Customer, NHVariousTests" table="Customers"&g
客户订单
模型来隔离问题
这是我的地图
客户:
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class xmlns="urn:nhibernate-mapping-2.2" name="NHVariousTests.Domain.Customer, NHVariousTests" table="Customers">
<id name="Code" type="System.Guid">
<column name="CustomerCode" />
<generator class="guid.comb" />
</id>
<version name="Version" type="System.Int32" unsaved-value="0" access="backfield"">
<column name="Version" not-null="true" />
</version>
<property name="Description" type="AnsiString">
<column name="Description" not-null="false" />
</property>
<set name="Orders" access="field.pascalcase-underscore" cascade="all-delete-orphan" inverse="true" lazy="true">
<key column="CustomerCode" />
<one-to-many class="NHVariousTests.Domain.Order, NHVariousTests" />
</set>
</class>
</hibernate-mapping>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class xmlns="urn:nhibernate-mapping-2.2" name="NHVariousTests.Domain.Order, NHVariousTests" table="Orders">
<id name="Code" type="System.Guid">
<column name="OrderCode" />
<generator class="guid.comb" />
</id>
<version name="Version" type="System.Int32" unsaved-value="0" access="backfield">
<column name="Version" not-null="true" />
</version>
<property name="Description" type="AnsiString">
<column name="Description" not-null="false" />
</property>
<many-to-one class="NHVariousTests.Domain.Customer, NHVariousTests" name="Customer">
<column name="CustomerCode" not-null="true" />
</many-to-one>
</class>
</hibernate-mapping>
这是我的客户
课程:
public class Customer : EntityGuid
{
public Customer()
{
this._Orders = new HashSet<Order>();
}
public virtual string Description { get; set; }
#region Orders
private readonly ICollection<Order> _Orders = null;
public virtual ReadOnlyCollection<Order> Orders
{
get { return (new List<Order>(_Orders).AsReadOnly()); }
}
public virtual bool AddOrder(Order order)
{
if ((order != null) && (!this._Orders.Contains(order)))
{
order.Customer = this;
this._Orders.Add(order);
return (true);
}
return (false);
}
public virtual bool RemoveOrder(Order order)
{
if ((order != null) && (this._Orders.Contains(order)))
{
this._Orders.Remove(order);
order.Customer = null;
return (true);
}
return (false);
}
#endregion
}
public abstract class EntityGuid : EntityWithTypedId<Guid>, IAuditedEntity
{
public EntityGuid()
{
this.CreatedDate = DateTime.Now;
this.UpdatedDate = DateTime.Now;
this.CreatedBy = "";
this.UpdatedBy = "";
}
public virtual DateTime CreatedDate { get; set; }
public virtual string CreatedBy { get; set; }
public virtual DateTime UpdatedDate { get; set; }
public virtual string UpdatedBy { get; set; }
public virtual int Version { get; private set; }
public virtual bool IsTransient()
{
return (EntityWithTypedId<Guid>.Equals(this.Code, default(Guid)));
}
public virtual bool IsTransient(EntityWithTypedId<Guid> obj)
{
return obj != null && Equals(obj.Code, default(Guid));
}
}
我可以看到客户的INSERT
,以及订单的两个INSERT
,但我也有客户的更新
如果我将我的Customer
类别更改为Iesi集合:
public class Customer : EntityGuid
{
public Customer()
{
this._Orders = new Iesi.Collections.Generic.HashedSet<Order>();
}
public virtual string Description { get; set; }
#region Orders
private readonly ICollection<Order> _Orders = null;
public virtual ReadOnlyCollection<Order> Orders
{
get { return (new List<Order>(_Orders).AsReadOnly()); }
}
public virtual bool AddOrder(Order order)
{
if ((order != null) && (!this._Orders.Contains(order)))
{
order.Customer = this;
this._Orders.Add(order);
return (true);
}
return (false);
}
public virtual bool RemoveOrder(Order order)
{
if ((order != null) && (this._Orders.Contains(order)))
{
this._Orders.Remove(order);
order.Customer = null;
return (true);
}
return (false);
}
#endregion
}
有没有人能帮我试着了解发生了什么
问候
如果有人真的对代码感兴趣。我已经把所有的东西都打扫干净了,尽量简单。可下载(NH_收集问题)。
我正在使用NHibernate 3.3.2.4000
- 等待NH4.0(目标是BCL的ISet可用的.NET4.0)。alpha版本将很快发布李>
- 使用。可在nuget上获得
您期望的行为是错误的,您应该期望在版本化实体上修改集合将更新版本。有关映射集合的说明,请参见,其中还介绍了如何禁用集合:
乐观锁(可选-默认为true):更改集合状态会导致所属实体版本增加的种类。(对于一对多关联,禁用此设置通常是合理的。)
我确实下拉了项目,并验证了更改此设置会切换正在发布的更新:false=无更新,true(默认)=更新。但是,我无法使用Iesi哈希集获得预期的行为。我认为这是一个bug,但我现在没有更多的时间来处理它。在客户映射中设置dynamic update=“true”,以便您可以看到正在更新的内容。我还会尝试将订单返回类型更改为IEnumerable
。谢谢Jamie。似乎唯一正在更新的是版本。如果我使用IEnumerable,同样的情况也会发生。请尝试删除不必要的集合初始值设定项。也就是说,不要设置_Orders=null。如何分配版本?Jamie:我添加了抽象类EntityGuid,并删除了初始值设定项,因此我的成员如下所示:private ICollection\u Orders=new HashSet()代码>但还是一样的问题。杰米:肯定与版本有关,因为如果我删除它,一切正常。非常感谢你的帮助,杰米。非常感谢。
public class Customer : EntityGuid
{
public Customer()
{
this._Orders = new Iesi.Collections.Generic.HashedSet<Order>();
}
public virtual string Description { get; set; }
#region Orders
private readonly ICollection<Order> _Orders = null;
public virtual ReadOnlyCollection<Order> Orders
{
get { return (new List<Order>(_Orders).AsReadOnly()); }
}
public virtual bool AddOrder(Order order)
{
if ((order != null) && (!this._Orders.Contains(order)))
{
order.Customer = this;
this._Orders.Add(order);
return (true);
}
return (false);
}
public virtual bool RemoveOrder(Order order)
{
if ((order != null) && (this._Orders.Contains(order)))
{
this._Orders.Remove(order);
order.Customer = null;
return (true);
}
return (false);
}
#endregion
}
public abstract class EntityGuid : EntityWithTypedId<Guid>, IAuditedEntity
{
public EntityGuid()
{
this.CreatedDate = DateTime.Now;
this.UpdatedDate = DateTime.Now;
this.CreatedBy = "";
this.UpdatedBy = "";
}
public virtual DateTime CreatedDate { get; set; }
public virtual string CreatedBy { get; set; }
public virtual DateTime UpdatedDate { get; set; }
public virtual string UpdatedBy { get; set; }
public virtual int Version { get; private set; }
public virtual bool IsTransient()
{
return (EntityWithTypedId<Guid>.Equals(this.Code, default(Guid)));
}
public virtual bool IsTransient(EntityWithTypedId<Guid> obj)
{
return obj != null && Equals(obj.Code, default(Guid));
}
}