Question

我几天来一直在努力解决这个烂摊子，试图弄清楚错误的确切原因。一句话，失败！基本上我一直试图对我用ClassMap引用另一个reference的{{1}}进行单元测试。

reference

您可以清楚地看到我的[TestMethod] public void IssueReturnRegisterMap_Create_Success() { var maxDifference = TimeSpan.FromMilliseconds(990); BookSize sz = new BookSize() { ID = "1", Name = "A" }; Department dpt = new Department() { ID = "1", Name = "Philosophy" }; Author auth = new Author() { ID = "2", FirstName = "Wise", LastName = "Person" }; Publisher pub = new Publisher() { ID = "1", Name = "Pub1", Address = "Address 1" }; Language lang = new Language() { ID = "1", Name = "Lang1" }; Patron ptrn = new Patron() { ID = "1", FirstName = "First", LastName = "Last", Age = 82, Address = "Address1", Gender = "Male", Occupation = "Occupation1", Telephone1 = "01234567890", Telephone2 = "01234567890" }; Book book = new Book() { ID = "1", Name = "Book1", Number = "12", BookSize = sz, Department = dpt, Author = auth, Commentator = "Another wiseman", Publisher = pub, Language = lang, }; Member member = new Member() { ID = "1", Patron = ptrn, IsRegistered = true }; //Edit: Acc. to Firo's suggestion Database.Session.Save( sz ); Database.Session.Save( dpt ); Database.Session.Save( auth ); Database.Session.Save( lang ); Database.Session.Save( pub ); Database.Session.Save( ptrn ); Database.Session.Save( book ); //@Firo: Throws same exception here! :-( Database.Session.Save( member ); new PersistenceSpecification<IssueReturnEntry>( Database.Session, new CustomEqualityComparer() ) .CheckProperty( x => x.ID, "1" ) .CheckReference( x=> x.Book, book ) .CheckReference( x => x.Member, member ) .CheckProperty( x => x.IssuedBy, "Librarian" ) .CheckProperty( x => x.IssueDate, DateTime.Now, new DateTimeEqualityComparer( maxDifference ) ) .CheckProperty( x => x.DueDate, DateTime.Now, new DateTimeEqualityComparer( maxDifference ) ) .CheckProperty( x => x.ReturnDate, DateTime.Now, new DateTimeEqualityComparer( maxDifference ) ) .CheckProperty( x => x.ReturnBy, "User" ) .VerifyTheMappings(); }由Book references，BookSize等组成。然后Department本身变为Book 1}}用于references地图。同样适用于IssueReturnRegister。它抛出一个＆not-null-null属性引用null或transient值错误＆＃39; Member对象的异常。任何帮助是极大的赞赏。提前谢谢。

Answer 1

错误意味着Booksize由要存储的实体引用但本身未存储且无法存储在此操作中，因为级联已禁用。

所以要么

References(x => x.BookSize).Cascade.All()或

Database.Session.Save(bz)

PersistenceSpecification

所有其他引用实体

相同

更新：持久性实体应该有一个Equals方法将id考虑在内

public override bool Equals(object obj)
{
    var other = obj as BookSize;
    return other != null && (Id == 0) ? ReferenceEquals(this, other) : Id == other.Id;
}

private int? _hashcode;
public override int GetHashCode()
{
    return _hashcode.HasValue ? _hashcode.Value : _hashcode = Id;
}

Answer 2

对不起Firo，我认为我的回复不够可读，因此再次在此发布。

if (x is BookSize && y is BookSize)
{ 
return (((BookSize)x).ID == ((BookSize)y).ID) && (((BookSize)x).Name == ((BookSize)y).Name) && (((BookSize)x).Length == ((BookSize)y).Length) && (((BookSize)x).Width == ((BookSize)y).Width);
}

这是我为EqualityComparer获得的equals方法。我还没有任何GetHashCode方法。

Answer 3

我的BookMap和BookSizeMap如下所示，然后使用Book实体对PersistenceSpecification实体进行单元测试，其中没有任何此类异常（请注意，我已经尝试过了）根据{{1}}实体的单元测试执行，但不适用于Book实体。

IssueRegisterEntry

Fluent NHibernate PersistenceSpecification not-null属性引用null或transient值错误

3 个答案: