Castle.ActiveRecord - 无法编译映射文档：（字符串）

Question

我正在尝试创建一个 POC 应用程序来探索 Castle.ActiveRecord，但由于某种原因，我收到“无法编译映射文档：（字符串）”错误消息。这是一个非常基本的代码。我检查了 Castle.ActiveRecord 的现有文档，但我无法弄清楚这个问题的原因。当然，它看起来像是某种配置故障。

程序.cs

class Program
{
    static void Main(string[] args)
    {
        IConfigurationSource source = ConfigurationManager.GetSection("activerecord") as IConfigurationSource;
        ActiveRecordStarter.Initialize(source, typeof(Student));

        var students = Student.FindAll();
        foreach (var student in students)
        {
            Console.WriteLine(student.Name);
        }
    }
}

学生.cs

[ActiveRecord("Student")]
public class Student : ActiveRecordBase<Student>
{
    [PrimaryKey]
    public int Id { get; set; }

    [Property]
    public string Name { get; set; }

    [Property]
    public string Grade { get; set; }
}       

App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="activerecord" type="Castle.ActiveRecord.Framework.Config.ActiveRecordSectionHandler, Castle.ActiveRecord"/>
  </configSections>

  <activerecord isWeb="true">
    <config>
      <add key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider"/>
      <add key="hibernate.dialect" value="NHibernate.Dialect.MsSql2000Dialect"/>
      <add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver"/>
      <add key="hibernate.connection.connection_string" value="Server=localhost;Database=Art_DEV;Trusted_Connection=True;"/>
    </config>
  </activerecord>

  <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
    </startup>
</configuration>

我得到的错误是：

{"Error adding information from class ConsoleApplication1.Student to NHibernate. Check the inner exception for more information"}
    Data: {System.Collections.ListDictionaryInternal}
    HResult: -2146233088
    HelpLink: null
    InnerException: {"Could not compile the mapping document: (string)"}
    Message: "Error adding information from class ConsoleApplication1.Student to NHibernate. Check the inner exception for more information"
    Source: "Castle.ActiveRecord"
    StackTrace: "   at Castle.ActiveRecord.ActiveRecordStarter.AddXmlString(Configuration config, String xml, ActiveRecordModel model)\r\n   at Castle.ActiveRecord.ActiveRecordStarter.AddXmlToNHibernateCfg(ISessionFactoryHolder holder, ActiveRecordModelCollection models)\r\n   at Castle.ActiveRecord.ActiveRecordStarter.RegisterTypes(ISessionFactoryHolder holder, IConfigurationSource source, IEnumerable`1 types, Boolean ignoreProblematicTypes)\r\n   at Castle.ActiveRecord.ActiveRecordStarter.Initialize(IConfigurationSource source, Type[] types)\r\n   at ConsoleApplication1.Program.Main(String[] args) in c:\\users\\user\\documents\\visual studio 2015\\Projects\\ConsoleApplication1\\ConsoleApplication1\\Program.cs:line 21"
    TargetSite: {Void AddXmlString(NHibernate.Cfg.Configuration, System.String, Castle.ActiveRecord.Framework.Internal.ActiveRecordModel)}

Answer 1

在你的域定义中让你的属性“虚拟”，它看起来像这样：

[ActiveRecord("Student")]
public class Student : ActiveRecordBase<Student>
{
    [PrimaryKey]
    public virtual int Id { get; set; }

    [Property]
    public virtual string Name { get; set; }

    [Property]
    public virtual string Grade { get; set; }
}       

NHibernate 需要这样才能进行延迟加载（Active Record 基于 NHibernate）

在这里查看更多信息：nhibernate and virtual class properties?

另外，如果没有帮助，请考虑查找详细消息（通过提高日志级别），因为通常 Active Record 可以告诉您到底是什么问题

另外，尝试从您的 app.config 活动记录配置中删除“休眠”命名空间

<add key="connection.provider" value="NHibernate.Connection.DriverConnectionProvider"/>
<add key="dialect" value="NHibernate.Dialect.MsSql2000Dialect"/>
<add key="connection.driver_class" value="NHibernate.Driver.SqlClientDriver"/>
<add key="connection.connection_string" value="Server=localhost;Database=Art_DEV;Trusted_Connection=True;"/>

检查您正在使用的 MSSQL 版本，因为您设置了 MsSql2000Dialect