CentOS 5 上启用 xfs 文件系统

package cn.framelife.mvc.entity;

import java.util.Set;

public class Student {
private Integer id;
private String name;
private Set<Teacher> teachers;

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Set<Teacher> getTeachers() {
return teachers;
}

public void setTeachers(Set<Teacher> teachers) {
this.teachers = teachers;
}
}

package cn.framelife.mvc.entity;

import java.util.Set;

public class Teacher {
private Integer id;
private String name;
private Set<Student> students;

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Set<Student> getStudents() {
return students;
}

public void setStudents(Set<Student> students) {
this.students = students;
}

}

<hibernate-mapping>
<class name="cn.framelife.hibernate.entity.Student" table="student">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="native" />
</id>
<property name="name" type="java.lang.String">
<column name="s_name" length="45" not-null="true" />
</property>
<set name="teachers" table="s_t" cascade="all">
<key column="student_id"/>
<many-to-many column="teacher_id" class="cn.framelife.hibernate.entity.Teacher"></many-to-many>
</set>
</class>
</hibernate-mapping>

<hibernate-mapping>
<class name="cn.framelife.hibernate.entity.Teacher" table="teacher" catalog="hibernate">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="native" />
</id>
<property name="name" type="java.lang.String">
<column name="t_name" length="45" not-null="true" />
</property>
<set name="students" table="s_t" >
<key column="teacher_id"/>
<many-to-many column="student_id" class="cn.framelife.hibernate.entity.Student"></many-to-many>
</set>
</class>
</hibernate-mapping>

Student s1 = new Student();
s1.setName("s10");
Student s2 = new Student();
s2.setName("s11");

Set<Teacher> set = new HashSet<Teacher>();
Teacher t1 = new Teacher();
t1.setName("t10");
Teacher t2 = new Teacher();
t2.setName("t11");
set.add(t1);
set.add(t2);

//设置学生与老师的的关系
s1.setTeachers(set);
s2.setTeachers(set);

//增加两个学生，同时会把老师也加到数据库中
session.save(s1);
session.save(s2);