复合id映射配置

Question

我需要配置Set.hbm.xml文件来映射这个表：

TABLE "Set“PK: IdSet int PK: dProject int单位字符NumDisc int

表“项目”主键: IdProject int Name varchar DateBegin datetime DateEnd datetime

我有这个配置，问题是不工作，mappinn错误...

这是SET.hbm.xml

​

<composite-id>
  <key-property name="IdSet" column="IdSet"  class="Set"></key-property>
  <key-many-to-one class="Project" name="IdProject" column="IdProject"  ></key-many-to-one>
</composite-id>

<property name="IdSetState" />
<property name="IdPriority" />
<property name="Unit" />
<property name="NumDisc" />
<property name="NumSet" />

​

这是Set entity类：

   public class Set
    {
        public virtual int IdSet { get; set; }
        public virtual int IdProject { get; set; }
        public virtual int IdSetState { get; set; }
        public virtual int IdPriority { get; set; }
        public virtual char Unit { get; set; }
        public virtual int NumDisc { get; set; }
        public virtual int NumSet { get; set; }
}

如何配置？？

Answer 1

您确定是key而不是key-property吗？

<composite-id>
     <key-property name="IdSet" column="IdSet" lazy="proxy" class="Set"></key>
     <key-many-to-one name="IdProject" column="IdProject" lazy="proxy"
 class="Project"></key-many-to-one>
</composite-id>

NHibernate and Composite Keys

Answer 2

您确定必须指定class="Set"吗？Id的类型为int，您可以将其删除

<composite-id>
  <key-property name="IdSet" column="IdSet"></key-property>
</composite-id>

此外，int IdProject应为Project Project