java之引用进阶----代码链---多对多映射

class User{
    private String userid;
    private String name;
    private String password;
    private Role role;
    public User(String userid,String name,String password){
        this.userid=userid;
        this.name=name;
        this.password=password;
    }
    public void setRoles( Role role){
        this.role=role;
    }
    public Role getRole(){
        return this.role;
    }
    public String getInfo(){
        return"用户ID："+this.userid+"，姓名:"+this.name+",密码:"+this.password;
    }
    
}
class Role{//角色
    private int rid;
    private String title;
    private User users[];
    private Group groups[];
    public void setGroups(Group groups[]){
        this.groups=groups;
    }
    public Group[] getGroups(){
        return this.groups;
    }
    public Role(int rid,String title){
        this.rid=rid;
        this.title=title;
    }
    public void setUsers(User users[] ){
        this.users=users;
    }
    public User[] getUsers(){
        return this.users;
    }
    public String getInfo(){
        return"角色编号:"+rid+",名称:"+title;
    }
    
}
class Group{//权限组
    private int gid;
    private String title;
    private Action actions[];
    private Role roles[];
    public void setRoles(Role roles[]){
        this.roles=roles;
    }
    public Role[] getRoles(){
        return this.roles;
    }
    public void setActions(Action actions[]){
        this.actions=actions;
    }
    public Action[] getActions(){
        return this.actions;
    }
    public Group(int gid,String title){
        this.gid=gid;
        this.title=title;
    }
    public String getInfo(){
        return "权限组ID:"+gid+",权限组名称:"+title;
    }
    
    
}
class Action{//权限
    private int aid;
    private String title;
    private String url;
    private Group group;
    public void setGroup(Group group){
        this.group=group;
    }
    public Group getGroup(){
        return this.group;
    }
    public Action(int aid,String title,String url){
        this.aid=aid;
        this.title=title;
        this.url=url;
    }
    public String getInfo(){
        return"权限编号:"+aid+",名称:"+title+",路径:"+url;
    }
}
public class LianXi {
    public static void main(String[]args){
        //1定义单独类对象
        User ua=new User("user-a","用户A","hello");
        User ub=new User("user-b","用户B","hello");
        User uc=new User("user-c","用户C","hello");
        //2定义权限对象
        Action act1=new Action(1,"新闻管理","http://www.zhaoshaiya1.com");
        Action act2=new Action(2,"资金管理","http://www.zhaoshaiya2.com");
        Action act3=new Action(3,"备份管理","http://www.zhaoshaiya3.com");
        Action act4=new Action(4,"缓存管理","http://www.zhaoshaiya4.com");
        Action act5=new Action(5,"数据管理","http://www.zhaoshaiya5.com");
        //定义权限组信息
        Group g1=new Group(1,"数据管理");
        Group g2=new Group(2,"人事管理");
        Group g3=new Group(3,"信息管理");
        //定义角色信息
        Role r1=new Role(10,"超级管理员");
        Role r2=new Role(20,"普通管理员");
        //定义权限组与权限的关系，一对多关系
        act1.setGroup(g1);
        act2.setGroup(g1);
        act3.setGroup(g2);
        act4.setGroup(g2);
        act5.setGroup(g3);
        g1.setActions(new Action[]{act1,act2});
        g2.setActions(new Action[]{act3,act4});
        g3.setActions(new Action[]{act5});
        //权限组与角色关系，多对多
        r1.setGroups(new Group[]{g1,g2,g3});
        r2.setGroups(new Group[]{g2,g3});
        g1.setRoles(new Role[]{r1});
        g2.setRoles(new Role[]{r1,r2});
        g3.setRoles(new Role[]{r1,r2});
        //定义用户与角色的关系
        ua.setRoles(r1);
        ub.setRoles(r2);
        uc.setRoles(r2);
        r1.setUsers(new User[]{ua});
        r2.setUsers(new User[]{ub,uc});
        //第二步取出数据
        System.out.println(ua.getInfo());
        System.out.println("\t|-[角色]"+ua.getRole().getInfo());
        for(int x=0;x<ua.getRole().getGroups().length;x++){
            System.out.println("\t\t|-[权限组]"+ua.getRole().getGroups()[x].getInfo());
            for(int y=0;y<ua.getRole().getGroups()[x].getActions().length;y++){
                System.out.println("\t\t\t|-[权限]"+ua.getRole().getGroups()[x].getActions()[y].getInfo());
            }
        }
        System.out.println("\n===========================================\n");
        //一个权限可以输出具备此权限的角色，以及具备此角色的管理员；同时输出该权限的所有权限详情；
        System.out.println("[权限]"+act2.getInfo());
        for(int x=0;x<act2.getGroup().getRoles().length;x++){
            System.out.println("\t|-[角色]"+act2.getGroup().getRoles()[x].getInfo());
            for(int y=0;y<act2.getGroup().getRoles()[x].getUsers().length;y++){
                System.out.println("\t\t[用户]"+act2.getGroup().getRoles()[x].getUsers()[y].getInfo());
            }
        }
    }

}