Question

在Fluent中使用Join和Component NHibernate Mapping会抛出“找不到属性异常的getter”。这是我的C＃代码

using FluentNHibernate.Mapping;

namespace FnhTest {
    public class CustomerMap : ClassMap<Customer> {
        public CustomerMap() {
            Id(x => x.Id).GeneratedBy.Identity();
            Map(x => x.Name);

            Join("BillingInfo", m =>
                               {
                                   m.KeyColumn("CustomerId");
                                   m.Component(x => x.BillingInfo, c =>
                                                                   {
                                                                       c.Map(y => y.AccountNumber);
                                                                       c.Map(y => y.Address);
                                                                   });
                               });
        }
    }

    public class BillingInfo {
        public virtual string AccountNumber { get; set; }
        public virtual string Address { get; set; }
    }

    public class Customer {
        public virtual int Id { get; set; }
        public virtual string Name { get; set; }

        public virtual BillingInfo BillingInfo { get; set; }
    }
}

这是我的数据库结构=＆gt;

Customers:
  Id (int)
  Name (varchar 50)
BillingInfo:
  Id (int)
  AccountNumber (varchar 50)
  Address (varchar 50)
  CustomerId (int) (Foriegn Key to the Customers Id)

Fluent NHibernate为此设置生成正确的映射，但由于某种原因，它会引发错误。下面给出了映射和错误

Mapping:

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="property" auto-import="true" default-cascade="none" default-lazy="true">
  <class xmlns="urn:nhibernate-mapping-2.2" name="FnhTest.Customer, FnhTest, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" table="`Customer`">
    <id name="Id" type="System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
      <column name="Id" />
      <generator class="identity" />
    </id>
    <property name="Name" type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
      <column name="Name" />
    </property>
    <join table="BillingInfo">
      <key>
        <column name="CustomerId" />
      </key>
      <component name="BillingInfo" insert="true" update="true" optimistic-lock="true">
        <property name="AccountNumber" type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
          <column name="AccountNumber" />
        </property>
        <property name="Address" type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
          <column name="Address" />
        </property>
      </component>
    </join>
  </class>
</hibernate-mapping>

Error:

TestCase 'M:FnhTest.Program.Main(System.String[])'
failed: An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail.

  * Database was not configured through Database method.

    FluentNHibernate.Cfg.FluentConfigurationException: An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail.

      * Database was not configured through Database method.
     ---> NHibernate.PropertyNotFoundException: Could not find a getter for property 'AccountNumber' in class 'FnhTest.Customer'
    at NHibernate.Properties.BasicPropertyAccessor.GetGetter(Type type, String propertyName)
    at NHibernate.Tuple.Component.PocoComponentTuplizer.BuildGetter(Component component, Property prop)
    at NHibernate.Tuple.Component.AbstractComponentTuplizer..ctor(Component component)
    at NHibernate.Tuple.Component.PocoComponentTuplizer..ctor(Component component)
    at NHibernate.Tuple.Component.ComponentEntityModeToTuplizerMapping..ctor(Component component)
    at NHibernate.Tuple.Component.ComponentMetamodel..ctor(Component component)
    at NHibernate.Mapping.Component.BuildType()
    at NHibernate.Mapping.Component.get_Type()
    at NHibernate.Mapping.SimpleValue.IsValid(IMapping mapping)
    at NHibernate.Mapping.PersistentClass.Validate(IMapping mapping)
    at NHibernate.Mapping.RootClass.Validate(IMapping mapping)
    at NHibernate.Cfg.Configuration.Validate()
    at NHibernate.Cfg.Configuration.BuildSessionFactory()
    d:\Builds\FluentNH\src\FluentNHibernate\Cfg\FluentConfiguration.cs(93,0): at FluentNHibernate.Cfg.FluentConfiguration.BuildSessionFactory()
       --- End of inner exception stack trace ---
    d:\Builds\FluentNH\src\FluentNHibernate\Cfg\FluentConfiguration.cs(100,0): at FluentNHibernate.Cfg.FluentConfiguration.BuildSessionFactory()
    D:\repositories\core\playground\minhajuddin\FnhTest\FnhTest\Program.cs(8,0): at FnhTest.Program.Main(String[] args)

      * Database was not configured through Database method.


0 passed, 1 failed, 0 skipped, took 6.46 seconds (Ad hoc).

我在网上搜索过但无法找到任何有用的信息，我们将非常感谢任何帮助：）

编辑：好吧，我没有找到一种方法在Fluent NHibernate中做到这一点，我正在使用Torkel发布的任何答案。但是，这不是我的意图。反正。

Answer 1

BillingInfo看起来不像组件而是实体。

如果您将BillingInfo映射为实体，则可以将其作为关联从Customer映射。

<many-to-one name="BillingInfo" property-ref="CustomerId" cascade="none"/>

property-ref是import，因为您不想加入BillingInfo Id，但是在CustomerId上，这需要您将CustomerId属性添加到BillingInfo类。

Answer 2

请原谅我，如果这是一个愚蠢的观察，但你不需要BillingInfo中的Id成员吗？

在Fluent中使用Join和Component NHibernate Mapping会抛出“找不到属性异常的getter”

2 个答案: