Nhibernate composite-id class must override Equals()解决办法

概述:

当使用Nhibernate查询表中的数据时,如果表中存在复合主键,如果没有在相应的实体类中重写Equals(),那么将会出现"Could not compile the mapping document: TestCleanSnow.JkptGlxtUser.hbm.xml".当跟踪出错的内部信息的时候会发现,内部异常为"composite-id class must override Equals(): TestCleanSnow.JkptGlxtUserId"

解决办法:

在JkptGlxtUserId.cs这个实体类中重写Equals()方法如下:

public override bool Equals(object obj)

{

if (obj is JkptGlxtUser)

{

JkptGlxtUser gu = obj as JkptGlxtUser;

if (this.Operatorid == gu.Id.Operatorid

&& this.Orgid == gu.Id.Orgid)

{

return true;

}

else return false;

}

return false;

}

再次执行调用语句,发现还出现"Could not compile the mapping document: TestCleanSnow.JkptGlxtUser.hbm.xml".这个错误,但是跟踪内部异常为:InnerException = {"composite-id class must override GetHashCode(): TestCleanSnow.JkptGlxtUserId"}

到此很明显,在遇到复合主键的情况下,应该还得在JkptGlxtUserId.cs中重写GetHashCode(),代码如下:

public override int GetHashCode()

{

return Orgid.GetHashCode();

}

再次运行调用程序,OK了.