Question

我确实尝试使用此问题Setting up one to many relationship with Fluent Nhibernate作为基础，但仍有问题。

我有两个类 - Contact和PostalAddress - 一个联系人可以有很多地址。问题是当它到达具有PostalAddress的类a时，它失败了

此SqlParameterCollection的索引1无效且Count = 1.

针对该特定联系人有一个地址

联系班级

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks;

namespace YourLivesDataEngine.DataObjects
{
    [DataContract()]
    public class Contact
    {
        private String givenName;
        private String surname;
        private String middleName;
        public Contact()
        {
            Emails              = new List<EmailAddress>();
            Addresses           = new List<PostalAddress>();
            TelephoneNumbers    = new List<TelephoneNumber>();

            givenName           = String.Empty;
            surname             = String.Empty;
            middleName          = String.Empty;

            Id                  = Guid.NewGuid().ToString();
        }
        [DataMember]
        public virtual String Id { get; set; }
        [DataMember]
        public virtual DateTime LastUpdated { get; set; }
        [DataMember]
        public virtual String Network { get; set; }
        [DataMember]
        public virtual String NetworkId { get; set; }
        [DataMember]
        public virtual String Name { get; set; }
        [DataMember]
        public virtual String GivenName { get; set; }
        [DataMember]
        public virtual String Surname { get; set; }
        [DataMember]
        public virtual String MiddleName { get; set; }
        [DataMember]
        public virtual IList<EmailAddress> Emails { get; set; }
        [DataMember(Name="Addresses")]
        public virtual IList<PostalAddress> Addresses { get; set; }
        [DataMember]
        public virtual IList<TelephoneNumber> TelephoneNumbers { get; set; }


    }
}

邮政地址类

public class PostalAddress
{
    public PostalAddress()
    {
        Id = Guid.NewGuid().ToString();
    }
    [DataMember]
    public virtual String Id { get; set; }
    public virtual String Address { get; set; }
    public virtual String Owner { get; set; }
    public virtual String AddressType { get; set; }
    public virtual Contact Contact { get; set; }
}

我的映射

ContactMap

public class ContactMap : ClassMap<Contact>
{
    public ContactMap()
    {
        Table("tblContacts");
        Id(x => x.Id);
        Map(x => x.LastUpdated);
        Map(x => x.Network);
        Map(x => x.NetworkId);
        Map(x => x.Name);
        Map(x => x.GivenName);
        Map(x => x.Surname);
        Map(x => x.MiddleName);

        HasMany<PostalAddress>(x => x.Addresses)
            .Inverse()
            .KeyColumns.Add("Id", mapping => mapping.Name("Id"))
            .Cascade.SaveUpdate()
    }
}

PostalAddressMap

   public class PostalAddressMap 
        : ClassMap<PostalAddress>
    {
        public PostalAddressMap()
        {
            Table("tblPostalAddresses");
            Id(x => x.Id);
            Id(x => x.Address);
            Id(x => x.AddressType);
            Id(x => x.Owner);

            References(x => x.Contact)
                .Class<Contact>()
                .Column("Owner");

        }
    }

保存联系人的代码是

   public void Save ( Contact Contact )
    {
        try
        {
            using (ISessionFactory factory = CreateSessionFactory())
            {
                using (var session = factory.OpenSession())
                {
                    using (ITransaction transaction = session.BeginTransaction())
                    {
                        // save the contact
                        session.Save(Contact);
                        transaction.Commit();

                    }
                }
            }
        }
        catch ( System.Exception e)
        {
            throw e;
        }
        finally
        {

        }

    }

我确定这与设置映射的方式有关但却无法看到它，而有些联系人没有地址 - 有些联系人应该至少有一些地址。< / p>

Answer 1

在mxmissile的帮助下，现在已经修复了它。

在PostalAddress的映射中存在问题。首先，我创建了所有字段ID - 所以将所需的属性更改为Map。

每当我尝试保存地址时，为此SqlParameterCollection获取了无效索引4，其中Count = 4错误。当字段映射两次时会导致此错误。对于这个映射，它是两次映射的所有者。它不需要在Map中列出 - 通过评论它可以运行的应用程序。修订后的Mapping类如下;

public class PostalAddressMap 
    : ClassMap<PostalAddress>
{
    public PostalAddressMap()
    {
        Table("tblPostalAddresses");
        Id(x => x.Id);
        Map(x => x.Address);
        Map(x => x.AddressType);

        References(x => x.Contact)
            .Class<Contact>()
            .Column("Owner");

    }
}

完成这些更改后，应用程序正确保存了“联系人和地址”。

保存子对象时，Fluent NHibernate映射失败

1 个答案: