nhibernate - 参数超出范围异常 : Index was out of range

Question

每当我使用PersitenceSpecification 类用于验证具有对值对象的引用。

    public class CatalogItem : DomainEntity
    {
        internal virtual Manufacturer Manufacturer { get; private
set; }
        internal virtual String Name { get; private set; }

        protected CatalogItem()
        {}

        public CatalogItem(String name, String manufacturer)
        {
            Name = name;
            Manufacturer = new Manufacturer(manufacturer);
        }
    }

    public class CatalogItemMapping : ClassMap<CatalogItem>
    {
        public CatalogItemMapping()
        {
            Id(catalogItem => catalogItem.Id);

            Component<Manufacturer>(category => category.Manufacturer,
                                    m => m.Map(manufacturer =>
manufacturer.Name));

            Map(catalogItem => catalogItem.Name);
            Map(Reveal.Property<CatalogItem>("Price"));
        }
    }

    [TestFixture]
    public class When_verifying_the_class_mapping_of_a_catalog_item
        : NHibernateSpecification
    {
        [Test]
        public void Then_a_catalog_object_should_be_persistable()
        {
            new PersistenceSpecification<CatalogItem>(Session)
                .VerifyTheMappings();
        }
    }

    [TestFixture]
    public class NHibernateSpecification
        : Specification
    {
        protected ISession Session { get; private set; }

        protected override void Establish_context()
        {
            var configuration = new SQLiteConfiguration()
                .InMemory()
                .ShowSql()
                .ToProperties();

            var sessionSource = new SessionSource(configuration, new
RetailerPersistenceModel());
            Session = sessionSource.CreateSession();

            sessionSource.BuildSchema(Session);
            ProvideInitialData(Session);

            Session.Flush();
            Session.Clear();
        }

        protected override void Dispose_context()
        {
            Session.Dispose();
            Session = null;
        }

        protected virtual void ProvideInitialData(ISession session)
        {}
    }

这是我收到的错误:

TestCase 'Then_a_catalog_object_should_be_persistable' not executed: System.ArgumentOutOfRangeException : Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index at System.ThrowHelper.ThrowArgumentOutOfRangeException (ExceptionArgument argument, ExceptionResource resource) at System.ThrowHelper.ThrowArgumentOutOfRangeException() at System.Collections.Generic.List1.get_Item(Int32
index)
at System.Data.SQLite.SQLiteParameterCollection.GetParameter(Int32
index)
at System.Data.Common.DbParameterCollection.System.Collections.IList.get_Item
(Int32 index)
at NHibernate.Type.GuidType.Set(IDbCommand
cmd, Object value, Int32 index)
at NHibernate.Type.NullableType.NullSafeSet(IDbCommand
cmd, Object value, Int32 index)
at NHibernate.Type.NullableType.NullSafeSet(IDbCommand
st, Object value, Int32 index,
ISessionImplementor session)
at NHibernate.Persister.Entity.AbstractEntityPersister.Dehydrate
(Object id, Object[] fields, Object
rowId, Boolean[] includeProperty,
Boolean[][] includeColumns, Int32
table, IDbCommand statement,
ISessionImplementor session, Int32
index)
at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object
id, Object[] fields, Boolean[]
notNull, Int32 j, SqlCommandInfo sql,
Object obj, ISessionImplementor
session)
at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object
id, Object[] fields, Object obj,
ISessionImplementor session)
at NHibernate.Action.EntityInsertAction.Execute()
at NHibernate.Engine.ActionQueue.Execute(IExecutable
executable)
at NHibernate.Engine.ActionQueue.ExecuteActions(IList
list)
at NHibernate.Engine.ActionQueue.ExecuteActions()
at NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions
(IEventSource session)
at NHibernate.Event.Default.DefaultFlushEventListener.OnFlush
(FlushEvent event)
at NHibernate.Impl.SessionImpl.Flush()
at NHibernate.Transaction.AdoTransaction.Commit()
d:\Builds\FluentNH\src\FluentNHibernate\Testing
\PersistenceSpecification.cs(127,0):
at
FluentNHibernate.Testing.PersistenceSpecification1.TransactionalSave (Object propertyValue) d:\Builds\FluentNH\src\FluentNHibernate\Testing \PersistenceSpecification.cs(105,0): at FluentNHibernate.Testing.PersistenceSpecification`1.VerifyTheMappings () C:\Source\SupplyChain\Tests\Retailer.IntegrationTests\Mappings \CatalogItemMappingSpecifications.cs(14,0): at SupplyChain.Retailer.IntegrationTests.Mappings.When_verifying_the_class_mapping_of_a_catalog_item.Then_a_catalog_object_should_be_persistable ()

很抱歉这篇文章很长，但这让我忙了好几天现在几个小时。这可能不是 FNH 造成的，因为我发现了这张 JIRA 票证NH 本身提到了类似的东西:

http://forum.hibernate.org/viewtopic.php?p=2395409

我仍然希望我的代码中做错了什么:-)。任何想到什么？

提前致谢

Answer 1

我自己找到了这个问题的解决方案首先是愚蠢。一旦我明白了，一切就都清楚了从流畅的 NH 映射生成 hbm 文件。

<class name="CatalogItem" table="`CatalogItem`" xmlns="urn:nhibernate-
mapping-2.2" optimistic-lock="version">
    ...

    <property name="Name" length="100" type="String">
      <column name="Name" />
    </property>

    ...

    <component name="Manufacturer" insert="false" update="true">
      <property name="Name" length="100" type="String">
        <column name="Name" />
      </property>
    </component>
  </class>

请注意，Name 属性的列和制造商组件都映射到同一列。这就是为什么这导致了 ArgumentOutOfRangeException，因为有参数多于列名。我解决了这个问题明确指定组件映射的列名称:

组件(catalogItem => CatalogItem.Manufacturer， m => m.Map(制造商 => 制造商.名称,“制造商”))；

又一个教训。