我有一个名为Worker
的班级 public class Worker : BaseEntity
{
public virtual int WorkerID { get; set; }
public virtual string Name { get; set; }
public virtual IList<Indemnification> Indemnifications { get; set; }
}
public class Indemnification : BaseEntity
{
public virtual int IndemnificationID { get; set; }
public virtual string IndemnificationNumber { get; set; }
//another properties
}
我正在使用自动化与一些约定
var mappings = new AutoPersistenceModel();
mappings.AddEntityAssembly(typeof(Worker).Assembly).Where(GetAutoMappingFilter);
mappings.Conventions.Setup(GetConventions());
mappings.Setup(GetSetup());
private Action<IConventionFinder> GetConventions()
{
return c =>
{
c.Add<PrimaryKeyConvention>();
c.Add<HasManyConvention>();
c.Add<TableNameConvention>();
c.Add<CustomForeignKeyConvention>();
c.Add<SubClassConvention>();
};
}
public class PrimaryKeyConvention : IIdConvention
{
public void Apply(FluentNHibernate.Conventions.Instances.IIdentityInstance instance)
{
instance.Column(instance.EntityType.Name + "ID");
instance.UnsavedValue("0");
}
}
public class HasManyConvention : IHasManyConvention
{
public void Apply(FluentNHibernate.Conventions.Instances.IOneToManyCollectionInstance instance)
{
instance.Key.Column(instance.EntityType.Name + "ID");
instance.Cascade.AllDeleteOrphan();
}
}
public class TableNameConvention : IClassConvention
{
public void Apply(FluentNHibernate.Conventions.Instances.IClassInstance instance)
{
instance.Table(instance.EntityType.Name);
}
}
public class CustomForeignKeyConvention : ForeignKeyConvention
{
protected override string GetKeyName(Member property, Type type)
{
return type.Name + "ID";
}
}
public class SubClassConvention : IJoinedSubclassConvention
{
public void Apply(FluentNHibernate.Conventions.Instances.IJoinedSubclassInstance instance)
{
instance.Table(instance.EntityType.Name);
instance.Key.Column(instance.EntityType.BaseType.Name + "ID");
}
}
问题是当我使用一份赔偿清单保存工人时: 工作人员被保存,所以赔偿但外键(WorkerID)在 赔偿表为空????
答案 0 :(得分:1)
我发现了问题:
当您需要保存具有(一对多)关系的实体时,您需要打开一个事务并提交它:)。
Session.BeginTransaction();
Session.Save(entity);
Session.CommitTransaction();
答案 1 :(得分:0)
难道你不知道为什么自动化允许为一对多关系创建的外键首先为空?
因此,在您的示例中,为什么“Indemnification”表中的“workerId”列没有添加非null约束?
我刚刚遇到了问题而且我认为即使它可以在代码中处理,也不应该插入空值,对吧?任何解决方案?