命名空间'urn：nhibernate-mapping-2.2'中的元素'class'具有无效的子元素'id'

Question

我是Nhibernate的新手。希望我能在这里找到答案。 这是我的课：

public class PaymentAudit : EntityBase<int>, IAggregateRoot 
{ 
    public PaymentAudit() { } 
    public System.Guid PaymentStateId { get; set; } 
    public System.DateTime DateStamp { get; set; } 
    public Payment Trn { get; set; } 
    public PaymentSaga PaymentSaga { get; set; } 
    public ProcessState ProcessState { get; set; } 
    public PublishState PublishState { get; set; } 
    public System.Nullable<short> ChgCount { get; set; } 
    public string UserName { get; set; } 

    protected override void Validate() 
    { 
    } 
} 

这是我的映射：

<?xml version="1.0" encoding="utf-8" ?> 

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" 
    namespace="Praweda.Interface.Framework.Model.Payment" 
     assembly="Praweda.Interface.Framework.Model"> 

    <class name="PaymentAudit" table="PaymentAudit" lazy="false" > 
    <composite-id> 
     <key-property name="PaymentStateId" column="PaymentStateId" /> 
     <key-property name="DateStamp" column="DateStamp" /> 
     <key-property name="ProcessState" column="ProcessState" /> 
    </composite-id> 
    <id name="PaymentState"> 
     <generator class="identity" /> 
     <column name="PaymentStateId" sql-type="uniqueidentifier" not-null="true" /> 
    </id>  
    <id name="ProcessState"> 
     <generator class="identity" /> 
     <column name="ProcessState" sql-type="varchar" not-null="true" /> 
    </id> 
    <id name="DateStamp"> 
     <generator class="identity" /> 
     <column name="DateStamp" sql-type="datetime" not-null="true" /> 
    </id> 
    <many-to-one insert="false" update="false" lazy="false" name="PaymentStateId"> 
     <column name="PaymentStateId" sql-type="uniqueidentifier" not-null="true" /> 
    </many-to-one> 
    <property name="PaymentStateId"> 
     <column name="PaymentStateId" sql-type="uniqueidentifier" not-null="true" /> 
    </property> 
    <many-to-one insert="false" update="false" lazy="false" name="ProcessState"> 
     <column name="ProcessState" sql-type="varchar" not-null="true" /> 
    </many-to-one> 
    <property name="ProcessState"> 
     <column name="ProcessState" sql-type="varchar" not-null="true" /> 
    </property> 
    <many-to-one insert="false" update="false" lazy="false" name="PublishState"> 
     <column name="PublishState" sql-type="varchar" not-null="false" /> 
    </many-to-one> 
    <property name="PublishState"> 
     <column name="PublishState" sql-type="varchar" not-null="false" /> 
    </property> 
    <many-to-one insert="false" update="false" lazy="false" name="Trn"> 
     <column name="Trn" sql-type="varchar" not-null="false" /> 
    </many-to-one> 
    <property name="Trn"> 
     <column name="Trn" sql-type="varchar" not-null="false" /> 
    </property> 
    <property name="ChgCount"> 
     <column name="ChgCount" sql-type="smallint" not-null="false" /> 
    </property> 
    <property name="UserName"> 
     <column name="UserName" sql-type="nvarchar" not-null="false" /> 
    </property> 
    </class> 

</hibernate-mapping> 

当我尝试添加该存储库组件会话工厂，这里的代码

 Configuration config = new Configuration(); 
     config.AddAssembly("MyProject.Nhibernate.Repository"); 

     log4net.Config.XmlConfigurator.Configure(); 

     config.Configure(); 

     _sessionFactory = config.BuildSessionFactory(); 

给予我错误： 命名空间'urn：nhibernate-mapping-2.2'中的元素'class'在命名空间'urn：nhibernate-mapping-2.2'中有无效的子元素'id'。

谢谢！

Answer 1

您有一个composite-id元素后跟一个id元素。你不能拥有两个。当您的表中的主键跨越多个列时，使用composite-id。

旁边，你只能有一个单一的id元素。它定义了您的实体如何唯一标识。 对于属性，您应该使用property元素。

这可能是有益的检查出NHibernate的文档： http://www.nhforge.org/doc/nh/en/#mapping