设计模式----组合模式（composite）

该设计模式是以公司的组织结构为背景的

Crop.java代码如下：

package com.designPattern.composite;

public abstract class Corp {

	private String name ="";
	
	private String position = "";
	
	private int salary = 0;
	
	public Corp(String name,String position,int salary){
		this.name = name;
		this.position = position;
		this.salary = salary;
	}
	
	public String getInfo(){
		String info = "姓名："+this.name+"\t职位："+this.position+"\t薪水："+this.salary;
		return info;
	}
}

Leaf.java代码如下：

package com.designPattern.composite;

public class Leaf extends Corp{

	public Leaf(String name, String position, int salary) {
		super(name, position, salary);
	}

}

Branch.java代码如下：

 package com.designPattern.composite;

import java.util.ArrayList;

public class Branch extends Corp{
	ArrayList<Corp> subordinateList = new ArrayList<Corp>();

	public Branch(String name, String position, int salary) {
		super(name, position, salary);
	}
	
	public void addSubordinate(Corp corp){
		this.subordinateList.add(corp);
	}
	
	public ArrayList<Corp> getSubordinate(){
		return this.subordinateList;
	}

}

Client.java代码如下：

 package com.designPattern.composite;

import java.util.ArrayList;

public class Client {
	
	public static void main(String[] args) {
		Branch ceo = compositeTree();
		System.out.println(ceo.getInfo());
		
		System.out.println(getTreeInfo(ceo));
	}
	
	public static Branch compositeTree(){
		Branch root = new Branch("老大","总经理",100000);
		
		Branch developDep = new Branch("老刘","研发部经理",10000);
		Branch salesDep = new Branch("老马","销售部经理",20000);
		Branch financeDep = new Branch("老赵","财务部经理",30000);
		
		Branch firstDevGroup = new Branch("杨组长","研发一组组长",8000);
		Branch secondDevGroup = new Branch("吴组长","研发二组组长",8000);
		
		Leaf a = new Leaf("a","开发人员",2000);
		Leaf b = new Leaf("b","开发人员",2000);
		Leaf c = new Leaf("c","开发人员",2000);
		Leaf d = new Leaf("d","开发人员",2000);
		Leaf e = new Leaf("e","开发人员",2000);
		Leaf f = new Leaf("f","开发人员",2000);
		Leaf g = new Leaf("g","开发人员",2000);
		Leaf h = new Leaf("h","开发人员",2000);
		Leaf i = new Leaf("i","开发人员",2000);
		Leaf k = new Leaf("k","销售人员",2000);
		Leaf l = new Leaf("l","销售人员",2000);
		Leaf j = new Leaf("j","财务人员",2000);
		Leaf m = new Leaf("m","财务人员",2000);
		Leaf n = new Leaf("n","CEO秘书",2000);
		Leaf p = new Leaf("陆副经理","研发部副经理",2000);
		
		firstDevGroup.addSubordinate(a);
		firstDevGroup.addSubordinate(b);
		firstDevGroup.addSubordinate(c);
		firstDevGroup.addSubordinate(d);
		
		secondDevGroup.addSubordinate(e);
		secondDevGroup.addSubordinate(f);
		secondDevGroup.addSubordinate(g);
		secondDevGroup.addSubordinate(h);
		secondDevGroup.addSubordinate(i);
		
		salesDep.addSubordinate(k);
		salesDep.addSubordinate(l);
		
		financeDep.addSubordinate(j);
		financeDep.addSubordinate(m);
	
		developDep.addSubordinate(firstDevGroup);
		developDep.addSubordinate(secondDevGroup);
		developDep.addSubordinate(p);
		
		root.addSubordinate(n);
		root.addSubordinate(salesDep);
		root.addSubordinate(financeDep);
		root.addSubordinate(developDep);
		
		return root;
		
	}
	
	public static String getTreeInfo(Branch root){
		ArrayList<Corp> subordinateList = root.getSubordinate();
		String info = "";
		
		for(Corp c:subordinateList){
			if(c instanceof Leaf){
				info = info +c.getInfo()+"\n";
			}else{
				info = info +c.getInfo()+"\n"+getTreeInfo((Branch)c);
			}
		}
		
		return info;
	}

}

运行结果如下：

 姓名：老大	职位：总经理	薪水：100000
姓名：n	职位：CEO秘书	薪水：2000
姓名：老马	职位：销售部经理	薪水：20000
姓名：k	职位：销售人员	薪水：2000
姓名：l	职位：销售人员	薪水：2000
姓名：老赵	职位：财务部经理	薪水：30000
姓名：j	职位：财务人员	薪水：2000
姓名：m	职位：财务人员	薪水：2000
姓名：老刘	职位：研发部经理	薪水：10000
姓名：杨组长	职位：研发一组组长	薪水：8000
姓名：a	职位：开发人员	薪水：2000
姓名：b	职位：开发人员	薪水：2000
姓名：c	职位：开发人员	薪水：2000
姓名：d	职位：开发人员	薪水：2000
姓名：吴组长	职位：研发二组组长	薪水：8000
姓名：e	职位：开发人员	薪水：2000
姓名：f	职位：开发人员	薪水：2000
姓名：g	职位：开发人员	薪水：2000
姓名：h	职位：开发人员	薪水：2000
姓名：i	职位：开发人员	薪水：2000
姓名：陆副经理	职位：研发部副经理	薪水：2000