将Hibernate过滤器属性应用于具有多对多关系的Bag

Question

考虑以下Hibernate映射文件:

<hibernate-mapping ...>
<class name="ContentPackage" table="contentPackages">
    <id name="Id" column="id" type="int"><generator class="native" /></id>
    ...
    <bag name="Clips" table="contentAudVidLinks">
      <key column="fk_contentPackageId"></key>
      <many-to-many class="Clip" column="fk_AudVidId"></many-to-many>
      <filter name="effectiveDate" condition=":asOfDate BETWEEN startDate and endDate"  />
    </bag>
</class>
</hibernate-mapping>

当我运行以下命令时:

  _session.EnableFilter("effectiveDate").SetParameter("asOfDate", DateTime.Today);

  IList<ContentPackage> items = _session.CreateCriteria(typeof(ContentPackage))
                                     .Add(Restrictions.Eq("Id", id))
                                     .List<ContentPackage>();

生成的SQL在中间映射表(contentAudVidLinks)上有WHERE子句,而不是"Clips"表,即使我已将过滤器属性添加到Bag of Clips中.

我究竟做错了什么？

Answer 1

弄清楚了.对于任何有兴趣的人,我的<filter>属性都在错误的地方:

之前:

<bag name="Clips" table="ctv_bb_contentAudVidLinks">
  <key column="fk_contentPackageId"></key>
  <many-to-many class="Clip" column="fk_AudVidId"></many-to-many>
  <filter name="effectiveDate" condition=":asOfDate BETWEEN startDate and endDate" />
</bag>

后:

<bag name="Clips" table="ctv_bb_contentAudVidLinks">
  <key column="fk_contentPackageId"></key>
  <many-to-many class="Clip" column="fk_AudVidId">
    <filter name="effectiveDate" condition=":asOfDate BETWEEN startDate and endDate" />
  </many-to-many>
</bag>