Nhibernate教程2（3）
含有关系的表指的是像学生这样，除了保存学生的基本信息，还希望把选课信息保存到学生的类中。这样情况下不能用软件来辅助产生对应的类和XML，这是NHibernate中唯一需要费脑筋学的地方。学生表对应的类和XML如下所示：
类文件（Student.cs）
using System;
using Iesi.Collections;
namespace CodeTest{
public class Student{
private int studentId;
private string studentName;
private string studentPassword;
private string emailAddress;
private DateTime dateCreated;
private ISet courses =
new HashedSet();
public int StudentId{
get { return studentId; }
set { studentId = value; }
}
public string StudentName{
get { return studentName; }
set { studentName = value; } }
public string StudentPassword{
get { return studentPassword; }
set { studentPassword = value; } }
public string EmailAddress{
get { return emailAddress; }
set { emailAddress = value; }}
public DateTime DateCreated{
get { return dateCreated; }
set { dateCreated = value; }}
public ISet Courses{
get{return courses;}
set{courses=value;}
}
}
}
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XML文件（Student.hbm.xml）
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
<class name="NHibernateTest.Student, NHibernateTest" table="Student">
<id name="StudentId" column="StudentId" type="Int32">
<generator class="native" />
</id>
<property name="StudentName" column= "StudentName" type="string" length="40"/>
<property name="StudentPassword" type="string" length="20"/>
<property name="EmailAddress" type="String" length="40"/>
<property name="DateCreated" type="DateTime" length="8"/>
<set name="Courses" table="StudentCourse" inverse="false">
<key column="StudentID"/>
<many-to-many column="CourseID" class=" NHibernateTest.Course, NHibernateTest "/>
</set>
</class>
</hibernate-mapping>
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