设计模式之中介者模式 Mediator

代码实现

public interface Mediator {

void register(String dname,Department d);
void command(String dname);
}

/*
 * 同事类接口
*/
public interface Department {

void selfAction(); //做本部门工作
void outAction();  //向总经理发出申请
}

public class Development implements Department{

private Mediator m ; //持有中介者（总经理）的引用

public Development(Mediator m) {
super();
this.m = m;
        m.register("development", this);
    }

    @Override
public void selfAction() {
        System.out.println("开发项目");
    }

    @Override
public void outAction() {
        System.out.println("汇报工作，需要资金支持");
    }

}


public class Finacial implements Department{

private Mediator m ; //持有中介者（总经理）的引用

public Finacial(Mediator m) {
super();
this.m = m;
        m.register("finacial", this);
    }

    @Override
public void selfAction() {
        System.out.println("数钱");
    }

    @Override
public void outAction() {
        System.out.println("汇报工作，钱怎么分配");
    }

}


public class Market implements Department{

private Mediator m ; //持有中介者（总经理）的引用

public Market(Mediator m) {
super();
this.m = m;
        m.register("market", this);
    }

    @Override
public void selfAction() {
        System.out.println("接项目");
    }

    @Override
public void outAction() {
        System.out.println("汇报工作，最新市场动态,需要资金支持");
        m.command("finacial");
    }

}

public class President implements Mediator{

private Map<String,Department> map = new HashMap<String,Department>();

    @Override
public void register(String dname, Department d) {
        map.put(dname,d);
    }

    @Override
public void command(String dname) {
        map.get(dname).selfAction();
    }

}

public class Client {

public static void main(String[] args) {
        Mediator m = new President();

        Market market = new Market(m);
        Development devp = new Development(m);
        Finacial f = new Finacial(m);

        market.selfAction();
        market.outAction();
    }
}