Question

不确定这是否与我们最近升级到NHibernate 3.1（现在为3.2）有关，但对组件列表的查询不再选择正确的标识符。

ClassMap如下所示：

public class FilingMap : ClassMap<Filing>
{
    public FilingMap()
    {
        Id(x => x.Id).GeneratedBy.Assigned();
        Map(x => x.AcceptedOn);
        Map(x => x.FiledBy).Not.Nullable();
        Component(x => x.FiledByEmail, m => m.Map(c => c.Value, "FiledByEmail"));
        Map(x => x.ConfirmationValue, "Confirmation");
        HasMany(x => x.History)
            .Table("FILING_HISTORY")
            .AsList(p => p.Column("Idx"))
            .Component(c =>
                           {
                               c.Map(x => x.Status);
                               c.Map(x => x.Timestamp);
                               c.Map(x => x.Message);
                           })
            .Cascade.All().Access.CamelCaseField(Prefix.Underscore);
        HasMany(x => x.Documents)
            .Table("FILING_DOCUMENT")
            .Component(c =>
                           {
                               c.Map(x => x.Image).CustomSqlType("BLOB");
                               c.Map(x => x.Name);
                               c.Map(x => x.Type, "FileType");
                               c.Map(x => x.NumberOfPages);
                           })
            .Cascade.All().Access.CamelCaseField(Prefix.Underscore);
        DiscriminateSubClassesOnColumn("Type");
    }
}

精简的hbm看起来就在这里：

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
  <class xmlns="urn:nhibernate-mapping-2.2" name="Core.Filings.Filing, Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" table="`Filing`">
    <id name="Id" type="System.Guid, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
      <column name="Id" />
      <generator class="assigned" />
    </id>
    <discriminator type="String">
      <column name="Type" />
    </discriminator>
    <list access="field.camelcase-underscore" cascade="all" name="History" table="FILING_HISTORY">
      <key>
        <column name="Filing_id" />
      </key>
      <index>
        <column name="Idx" />
      </index>
      <composite-element class="Core.Filings.FilingStatusChange, Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null">
        <property name="Status" type="FluentNHibernate.Mapping.GenericEnumMapper`1[[Core.Filings.FilingStatus, Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], FluentNHibernate, Version=1.3.0.717, Culture=neutral, PublicKeyToken=8aa435e3cb308880">
          <column name="Status" />
        </property>
        <property name="Timestamp" type="System.DateTime, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
          <column name="Timestamp" />
        </property>
        <property name="Message" type="System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
          <column name="Message" />
        </property>
      </composite-element>
    </list>
  </class>
</hibernate-mapping>

linq查询是这样的：

using(var session = sessionfactory.OpenSession())
            {
                Assert.DoesNotThrow(() => session.Query<Filing>()
                    .Where(x => x.History.Any(h => h.Status == FilingStatus.Error)).ToList());
            }

删节的sql输出在这里：

select filing0_.Id as Id2_, filing0_.AcceptedOn as AcceptedOn2_, 
...
from FILING filing0_ 
left outer join ...
where (exists 
(select history1_.Id from FILING_HISTORY history1_ where filing0_.Id=history1_.FILING_ID 
and history1_.Status=:p0)) and  not (exists (select history2_.Id from FILING_HISTORY history2_ 
where filing0_.Id=history2_.FILING_ID and history2_.Status=:p1))

问题是默认键列（例如，entitytable_id）未在exists子查询中使用。相反，它使用实体可能具有的“id”列名称。即，应该是'Filing_id'，而不是'Id'。

关于这可能是什么/在哪里的任何想法，或者它为什么有效，但现在却没有？谢谢！

为什么Fluent NHibernate不再正确映射组件子查询？

0 个答案: