/**
*有这样一个需求
*有一个学校有2个班(一班,二班)
*每个班级分2个小组(一班一组,一班二组,二班一组,二班二组)
*学校计算机教室有限,每一个小组分着来上课.
*考试的时候大家一起考
*请用程序来模拟这个需求
*/
(function(){
//不用组合模式
//学校类
var school = function(name){
this.name = name;
//班级
var classes = new Array();
this.addClasses = function(cla){
classes.push(cla);
return this;
}
this.getClasses = function(){
return classes;
}
}
//班级类
var classes = function(name){
this.name = name;
var groups = new Array();
this.getGroup = function(){
return groups;
}
this.addGroup = function(group){
groups.push(group);
return this;
}
}
//组
var group = function(name){
this.name = name;
var students = new Array();
this.getStudent = function(){
return students;
}
this.addStudent = function(stu){
students.push(stu);
return this;
}
}
//学生类
var student = function(name){
this.name = name;
this.goToClass = function(){
document.write(this.name+" 去上课");
}
this.finishClass = function(){
document.write(this.name+" 下课");
}
}
//测试
var a = new student("a");
var b = new student("b");
var c = new student("c");
var d = new student("d");
var e = new student("e");
var f = new student("f");
var g = new student("g");
var h = new student("h");
var i = new student("i");
var one = new classes("一班");
var oneOne = new group("一班一组");
oneOne.addStudent(a).addStudent(b);
var oneTwo = new group("一班二组");
oneTwo.addStudent(c).addStudent(d);
one.addGroup(oneOne).addGroup(oneTwo);
var two = new classes("二班");
var twoOne = new group("二班一组");
twoOne.addStudent(e).addStudent(f);
var twoTwo = new group("二班二组");
twoTwo.addStudent(g).addStudent(h).addStudent(i)
two.addGroup(twoOne).addGroup(twoTwo);
var usPcat = new school("波斯卡特计算机培训学校");
usPcat.addClasses(one).addClasses(two);
//调用 就写一个 一班一组去上课
var classes= usPcat.getClasses();
for (var i = 0; i < classes.length; i++) {
if(classes[i].name == "一班"){
for (var j = 0; j < classes[i].getGroup().length; j++) {
// document.write(classes[i].getGroup()[j])
if(classes[i].getGroup()[j].name == "一班一组"){
var s = classes[i].getGroup()[j].getStudent();
for (var k = 0; k < s.length; k++) {
s[k].goToClass();
}
}
}
}
}
//我快些吐了
//这种方法一定不是和业务的扩展
})()
/**
* 组合模式
*/
(function(){
//统一接口
var composite = new Interface("composite",["getChildByName","add"]);
var student= new Interface("composite",["goToClass","finishClass"]);
//定义组合类
var compositeObj = function(name){
this.name = name;
this.type = "com";//默认是组合类
var childs = new Array();
//得到相关的所有孩子节点
this.getChildByName = function(name){
//涉及到递归
var toChilds = new Array();
if(!name){//没有传名字，左根遍历树
for (var i = 0; i < childs.length; i++) {
if(childs[i].type == "com"){
toChilds = toChilds.concat(childs[i].getChildByName());
}else{
toChilds.push(childs[i]);
}
}
}else{//左先根查找树
for (var i = 0; i < childs.length; i++) {
if(childs[i].name == name){
if(childs[i].type == "com"){
toChilds = toChilds.concat(childs[i].getChildByName());
break;
}else{
toChilds.push(childs[i]);
break;
}
}else{
if(childs[i].type == "com"){
toChilds = toChilds.concat(childs[i].getChildByName(name));
}
}
}
}
return toChilds;
}
//增加子节点
this.add = function(child){
childs.push(child);
return this;
}
//去上课
this.goToClass = function(name){
var toChilds = this.getChildByName(name);
for (var i = 0; i < toChilds.length; i++) {
toChilds[i].goToClass();
}
}
//下课
this.finishClass = function(name){
var toChilds = this.getChildByName(name);
for (var i = 0; i < toChilds.length; i++) {
toChilds[i].finishClass();
}
}
Interface.ensureImplements(this,composite,student)
}
//定义叶子类
var studentObj = function(name){
this.name = name;
this.type = "stu";//默认是叶子
//得到相关的所有孩子节点
this.getChildByName = function(name){
if(this.name == name){
return this;
}else{
return null;
}
}
//增加子节点
this.add = function(child){
throw new Error("add 不成被初始化(在叶子了中)");
}
//去上课
this.goToClass = function(name){
document.write(this.name +" 去上课<br>");
}
//下课
this.finishClass = function(name){
document.write(this.name +" 下课<br>");
}
Interface.ensureImplements(this,composite,student)
}
//测试
var a = new studentObj("a");
var b = new studentObj("b");
var c = new studentObj("c");
var d = new studentObj("d");
var e = new studentObj("e");
var f = new studentObj("f");
var g = new studentObj("g");
var h = new studentObj("h");
var i = new studentObj("i");
var one = new compositeObj("一班");
var oneOne = new compositeObj("一班一组");
oneOne.add(a).add(b);
var oneTwo = new compositeObj("一班二组");
oneTwo.add(c).add(d);
one.add(oneOne).add(oneTwo);
var two = new compositeObj("二班");
var twoOne = new compositeObj("二班一组");
twoOne.add(e).add(f);
var twoTwo = new compositeObj("二班二组");
twoTwo.add(g).add(h).add(i)
two.add(twoOne).add(twoTwo);
var usPcat = new compositeObj("波斯卡特计算机培训学校");
usPcat.add(one).add(two);
//客户端调用API
usPcat.goToClass();
document.write("-------------------------<br>");
usPcat.goToClass("一班");
document.write("-------------------------<br>");
usPcat.goToClass("二班一组");
document.write("-------------------------<br>");
usPcat.goToClass("a");
})()