我如何从一个聚合根内填充数据从DB的子实体

我有一个聚合根Entity，它在请求时执行一些处理。如果在处理过程中满足某个条件，则必须初始化SubEntity。问题是，SubEntity也有一个子实体Status，必须初始化的起始值，来自数据库。

我正在努力密切遵循SOLID和DDD原则，但我在这方面是新手。我现在让它工作的方式是通过使用工厂，但对我来说这看起来是错误的，因为我不喜欢让这个工厂由消费者类服务(为了遵循DIP)，因为这是该实体中的域逻辑的一部分。

我这样做对吗?这是设计此类类的正确方法吗?我有什么选择?

public class Entity
{
    public virtual SubEntity SubEntity { get; private set; }
    public void Process(int someData, ISubEntityFactory subEntityFactory)
    {
        if (SomeConditionIsMet)
        {
            SubEntity = subEntityFactory.Create(this);
        }
    }
}
public class SubEntity
{
    public SubEntity(Entity entity, Status status)
    {
        Entity = entity;
        Status = status;
    }
    public virtual Entity Entity { get; private set; }
    public virtual Status Status { get; private set; }
}
public class Status
{
    public const int StartingId = 1;
    public int Id { get; set; }
    public string Description { get; set; }
    public virtual ICollection<SubEntity> SubEntity { get; private set; }
}
public class SubEntityFactory : ISubEntityFactory
{
    // property and constructor omitted
    public SubEntity Create(Entity entity)
    {
        var status = UnitOfWork.StatusRepository.GetByID(Status.StartingId);
        return new SubEntity(entity, status);
    }
}

---

解决方案

基于dmi的伟大答案，我决定接收initialStatus变量作为Process方法的参数，因此我的域不耦合到DB。然后验证initialStatus以确保其id与Status.StartingId匹配。在那之后，我甚至不再需要工厂了，它看起来干净多了。

public class Entity
{
    public virtual SubEntity SubEntity { get; private set; }
    public void Process(int someData, Status initialStatus)
    {
        ValidateInitialStatus(initialStatus);
        if (SomeConditionIsMet)
        {
            SubEntity = new SubEntity(this, initialStatus);
        }
    }
    private void ValidateInitialStatus(Status initialStatus)
    {
        if (initialStatus == null)
        {
            throw new ArgumentNullException("initialStatus");
        }
        if (initialStatus.Id != Status.StartingId)
        {
            throw new ArgumentException("Initial status is invalid");
        }
    }
}
public class SubEntity
{
    public SubEntity(Entity entity, Status status)
    {
        Entity = entity;
        Status = status;
    }
    public virtual Entity Entity { get; private set; }
    public virtual Status Status { get; private set; }
}
public class Status
{
    public const int StartingId = 1;
    public int Id { get; set; }
    public string Description { get; set; }
    public virtual ICollection<SubEntity> SubEntity { get; private set; }
}

public class Entity
{
    private readonly ISubEntityFactory _subEntityFactory; 
    public Entity(ISubEntityFactory subEntityFactory) {
        _subEntityFactory = subEntityFactory;
    }
    public void Process(int someData, Status initialStatus)
    {
        if (SomeConditionIsMet)
        {
            SubEntity = _subEntityFactory.Create(this, initialStatus);
        }
    }
}