view - 映射以查看自定义字段名称 - 一对一关系

Question

我无法让 NHibernate 映射 AccountCode Beneficiary 的列表 AccountCode这种一对一关系中的列(每个 Account 有一个 Beneficiary ，每个 Beneficiary 有一个 Account )。

类:

public class Account
{
    ...
    public virtual string Name { get; protected set; }
    public virtual string Code { get; protected set; }
}

public class Beneficiary
{
    ...
    public virtual int Id { get; set; }
    public virtual string Name { get; protected set; }
    public virtual Account Account { get; protected set; }
    public virtual BeneficiaryGroup Group { get; protected set; }
}

SQL:

CREATE VIEW dbo.Account AS
    SELECT DISTINCT RTRIM(LTRIM(ACCNT_NAME)) AS Name, 
                    RTRIM(LTRIM(ACCNT_CODE)) AS Code
    FROM myremoteserver.schema.tablename
    WHERE ACCNT_TYPE NOT IN ('B', 'P')


CREATE TABLE dbo.Beneficiary
(
    Id INT IDENTITY(1,1) NOT NULL, 
    BeneficiaryGroupId INT NOT NULL CONSTRAINT FK_Beneficiaries_BeneficiaryGroup FOREIGN KEY REFERENCES dbo.BeneficiaryGroup (Id), 
    Name VARCHAR(100) NOT NULL,
    AccountCode VARCHAR(100) NOT NULL,
    CONSTRAINT PK_Beneficiary PRIMARY KEY (Id)
)

尝试使用 HasMany 时和不同的变体，NHibernate 尝试加入 Beneficiary.Id柱子。

我尝试了 Map 的不同变体, References , Join (它告诉我连接已经存在)和 HasMany (失败了，因为关系确实是一对一的)。

如何让 NHibernate 将这两个类正确映射到它们的列？

---

在尝试不同的流畅映射时，在我的 IAutoMappingOverride<Beneficiary> ，会发生以下情况:

mapping.HasOne(b => b.Account);
mapping.HasOne(b => b.Account).PropertyRef(sa => sa.Code);
mapping.HasOne(b => b.Account).PropertyRef(sa => sa.Code).ForeignKey("none");

生成的 SQL 使用 Beneficiary.Id字段而不是 Beneficiary.AccountCode . (在你问之前，我使用“none”，因为 Account 是一个 View ，它不能有键)。

mapping.Join("AccountCode", x => x.References(y => y.Account));
mapping.Join("Account", b => b.KeyColumn("AccountCode"));

结果为 Tried to add join to table 'Account' when already added. .

还有:

mapping.Map(b => b.Account, "AccountCode");
mapping.Map(b => b.Account).ReadOnly().Column("AccountCode");

结果:

Could not determine type for: .Account, , Version=1.0.0.0, Culture=neutral, PublicKeyToken=null, for columns: NHibernate.Mapping.Column(AccountCode)

mapping.References(b => b.Account).Column("Code");

结果为 Invalid column name 'Code'. .

还有:

mapping.References(b => b.Account).Column("AccountCode");
mapping.References(b => b.Account).Column("AccountCode").Access.Property();

覆盖我所有的IReferenceConvention覆盖(将某些类映射为具有 <class name>Code 键列)。

尝试 HasMany 时:

mapping.HasMany<Account>(b => b.Account).KeyColumn("AccountCode");

Custom type does not implement UserCollectionType: .Account

Answer 1

// in BeneficiaryMapping
mapping.References(b => b.Account)
    .Column("AccountCode" /* of Beneficiary table*/)
    .PropertyRef(a => a.Code); // use the Column of Code as the joincolumn in Account table