有没有某种方法可以指定“哪里”？动态地在地图上？

发布于 2024-12-13 13:25:42 字数 821 浏览 3 评论 0原文

让我们考虑以下简化的映射：

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"  assembly="xxx" namespace="yyy">
  <class name="Customer" table="Customers">
    <id name="Id" column="customerID" type="Int64">
      <generator class="native"/>
    </id>

    <!-- LOOK AT THE WHERE BELOW .-->
    <map where="codeType='BO'" name="Conversions" table="CustomersCodes" >
      <key column="customerID"></key>
      <index   column="codeType" type="AnsiString"/>
      <element column="code" type="AnsiString"/>
    </map>

  </class>
</hibernate-mapping>

我想在代码中从根本上指定位置（粘贴在示例中的映射中），这可能吗？

作为一种可行的替代方案，是否可以使用 QueryOver 或 LinqToNH 只获取映射的键？我确实尝试过链接到 NH，但它抱怨地图不包含实体（是的，因为它是元素的地图，这在 NH 中完全有效，并且在许多情况下对于优化速度很有用）

原文

Lets consider the following simplified mapping:

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"  assembly="xxx" namespace="yyy">
  <class name="Customer" table="Customers">
    <id name="Id" column="customerID" type="Int64">
      <generator class="native"/>
    </id>

    <!-- LOOK AT THE WHERE BELOW .-->
    <map where="codeType='BO'" name="Conversions" table="CustomersCodes" >
      <key column="customerID"></key>
      <index   column="codeType" type="AnsiString"/>
      <element column="code" type="AnsiString"/>
    </map>

  </class>
</hibernate-mapping>

I would like to dinamycally specify the where ( that is sticked in the mapping in the sample ) in code, is it possible ?

As a viable alternative, is it possible to fetch just a key of the map with QueryOver or LinqToNH ? I did try with link to NH but it complain that the map does not contain an entity ( true, since it is a map of elements, that is perfectly valid in NH and useful to optimize the speed in many cases )

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