hql中idictionary<key,val>的createFilter()

我正在努力:

db.CreateFilter(x.dict, "DictionaryValue = 1 order by CreateDate");

但这不是有效的hql。如何在hql中编写此筛选器?

代码如下:

public class A
{
    public virtual IDictionary<B, int> dict { get; protected set; } //int is 1 or -1
}

public class B
{
    public virtual DateTime CreateDate { get; set; }
}

映射为:

<map name="dict" table="TABLE">
  <key column="ID_A" />
  <index-many-to-many column="ID_B" class="B" />
  <element column="FACTOR" type="Int32" />
</map>