Hibernate课程 初探多对多映射2-2 创建持久化类和映射文件

生成实体类 和 cfg.xml配置

cfg.xml 参照一对多映射

 

实体类如下：

Project 类

package com.ddwei.entity;

import java.util.HashSet;
import java.util.Set;



/**
 * 创建项目实体类
 * 
 * add by author ddwei
 * 
 * 2018/07/30
 * 
 */
public class Project {

    private int proid;

    private String proname;
    
    private Set<Employee2> employees = new HashSet<Employee2>(); 


    public int getProid() {
        return this.proid;
    }

    public void setProid(int proid) {
        this.proid = proid;
    }

    public String getProname() {
        return this.proname;
    }

    public void setProname(String proname) {
        this.proname = proname;
    }
    
    

    public Set<Employee2> getEmployees() {
        return employees;
    }

    public void setEmployees(Set<Employee2> employees) {
        this.employees = employees;
    }

    public Project() {
        super();
        // TODO Auto-generated constructor stub
    }

    public Project(int proid, String proname, Set<Employee2> employees) {
        super();
        this.proid = proid;
        this.proname = proname;
        this.employees = employees;
    }
    
    
    

}

 

Employee2类

package com.ddwei.entity;

import java.util.HashSet;
import java.util.Set;



/**
 * 创建雇员实体类
 * 
 * add by author ddwei 
 * 
 * 2018/07/30
 */
public class Employee2{

    private int empid;

    private String empname;
    
    private Set<Project> projects = new HashSet<Project>();

    public Employee2() {
    }

    public int getEmpid() {
        return this.empid;
    }

    public void setEmpid(int empid) {
        this.empid = empid;
    }

    public String getEmpname() {
        return this.empname;
    }

    public void setEmpname(String empname) {
        this.empname = empname;
    }

}