我有三張桌子在與下面的nhibernate地圖多對多的關係。我的對象也在下面。投資組合項目可以有許多標籤。我遇到的問題是許多到許多Nhibernate - 重複的記錄和沒有插入
1)更新保存另一個標籤,即使名稱與上次相同。因此,當標籤相同時,重複記錄會插入到標籤中。例如,如果一個投資組合對象的標籤是abc,那麼添加標籤的下一個投資組合項目應引用此記錄而不是重新插入abc。我認爲這是因爲標籤地圖中的id列。 Nhibernate需要一個身份證。
2)創建不會在連接表中添加記錄。連接表中的記錄僅在更新時添加。
域對象
public class Portfolio {
public Portfolio() {
PortfolioImage = new List<Portfolioimage>();
Tag = new List<Tag>();
}
public virtual int PortfolioId { get; set; }
public virtual string AliasTitle { get; set; }
public virtual string MetaDescription { get; set; }
public virtual string Title { get; set; }
public virtual string Client { get; set; }
public virtual string Summary { get; set; }
public virtual string Url { get; set; }
public virtual string MainImage { get; set; }
public virtual string TitleAlt { get; set; }
public virtual string Description { get; set; }
public virtual IList<Portfolioimage> PortfolioImage { get; set; }
public virtual IList<Tag> Tag { get; set; }
}
public class Portfoliotag {
public virtual int Id { get; set; }
public virtual Portfolio Portfolio { get; set; }
public virtual Tag Tag { get; set; }
}
public class Tag {
public Tag() {
Portfolio = new List<Portfolio>();
}
public virtual int TagId { get; set; }
public virtual string TagVal { get; set; }
public virtual IList<Portfolio> Portfolio { get; set; }
}
地圖
public class PortfolioMap : ClassMap<Portfolio> {
public PortfolioMap() {
Table("Portfolio");
LazyLoad();
Id(x => x.PortfolioId).GeneratedBy.Identity().Column("PortfolioId");
Map(x => x.AliasTitle).Column("AliasTitle").Not.Nullable();
Map(x => x.MetaDescription).Column("MetaDescription").Not.Nullable();
Map(x => x.Title).Column("Title").Not.Nullable();
Map(x => x.Client).Column("Client").Not.Nullable();
Map(x => x.Summary).Column("Summary").Not.Nullable();
Map(x => x.Url).Column("Url");
Map(x => x.MainImage).Column("MainImage");
Map(x => x.TitleAlt).Column("TitleAlt");
Map(x => x.Description).Column("Description").Not.Nullable();
HasMany(x => x.PortfolioImage).KeyColumn("PortfolioId").Inverse();
HasManyToMany(x => x.Tag).Table("PortfolioTag").ParentKeyColumn("PortfolioId").ChildKeyColumn("TagId").LazyLoad().Cascade.All().Fetch.Join();
}
}
public class PortfoliotagMap : ClassMap<Portfoliotag> {
public PortfoliotagMap() {
Table("PortfolioTag");
LazyLoad();
Id(x => x.Id).GeneratedBy.Identity().Column("Id");
References(x => x.Portfolio).Not.Nullable().Cascade.SaveUpdate().Column("PortfolioId");
References(x => x.Tag).Not.Nullable().Cascade.SaveUpdate().Column("TagId");
}
}
public class TagMap : ClassMap<Tag> {
public TagMap() {
Table("Tag");
LazyLoad();
Id(x => x.TagId).GeneratedBy.Identity().Column("TagId");
Map(x => x.TagVal).Column("Tag").Not.Nullable();
//HasMany(x => x.PortfolioTag).KeyColumn("TagId");
// HasMany(x => x.PortfolioTag).Cascade.AllDeleteOrphan().Inverse().Fetch.Join().KeyColumn("TagId");
HasManyToMany(x => x.Portfolio).Table("PortfolioTag").ParentKeyColumn("PortfolioId").ChildKeyColumn("TagId").LazyLoad().Inverse().Cascade.AllDeleteOrphan();
}
}
以前的映射是正確的。我會避免多對多... –
哪些以前的映射 – matt
http://stackoverflow.com/q/33188831/1679310 –