[Commons]——自定义类型转换

public class test2 {
	public static void main(String[] args) {
		trans2();
	}
	public static void trans1(){
		System.out.println("自定义类型的转换");
		//判别式
		Predicate<Empolyee> isLow=new Predicate<Empolyee>() {
			@Override
			public boolean evaluate(Empolyee empolyee) {
				return empolyee.getSalary()<10000;
			}
		};
		//判别式
		Predicate<Empolyee> isHigh=new Predicate<Empolyee>() {
			@Override
			public boolean evaluate(Empolyee empolyee) {
				return empolyee.getSalary()>=10000;
			}
		};
		Predicate[] predicates={isHigh,isHigh};//判别式数组
		Transformer<Empolyee, Level> lowTrans=new Transformer<Empolyee, Level>() {//转换
			@Override
			public Level transform(Empolyee empolyee) {
				return new Level(empolyee.getName(), "养身中...");
			}
		};
		Transformer<Empolyee, Level> HighTrans=new Transformer<Empolyee, Level>() {//转换
			@Override
			public Level transform(Empolyee empolyee) {
				return new Level(empolyee.getName(), "出力中...");
			}
		};
		Transformer[] transformers={lowTrans,HighTrans};//转换数组
		Transformer transformerUnion=new SwitchTransformer<>(predicates, transformers, null);//关联
		//容器
		List<Empolyee> list=new ArrayList<Empolyee>();
		list.add(new Empolyee("张三", 10002));
		list.add(new Empolyee("李四", 9002));
		Collection<Level> levelList=CollectionUtils.collect(list, transformerUnion);
		//遍历
		Iterator<Level> iterator=levelList.iterator();
		while(iterator.hasNext()){
			System.out.println(iterator.next());
		}
	}
	public static void trans2(){
		System.out.println("内置类型的转换");
		Transformer<Long, String> transformer=new Transformer<Long, String>() {
			@Override
			public String transform(Long temp) {
				// TODO Auto-generated method stub
				return new SimpleDateFormat("yyyy年MM月dd日").format(temp);
			}
		};
		List<Long> list=new ArrayList<Long>();
		list.add(10000000L);
		list.add(1000234000L);
		Collection<String> timeList=CollectionUtils.collect(list, transformer);
		for(String str:timeList){
			System.out.print(str+"\n");
		}
	}
}

public class Goods {
	private String name;
	private double price;
	//折扣
	private boolean discount;
	public Goods() {
		// TODO Auto-generated constructor stub
	}
	public Goods(String name, double price, boolean discount) {
		super();
		this.name = name;
		this.price = price;
		this.discount = discount;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public double getPrice() {
		return price;
	}
	public void setPrice(double price) {
		this.price = price;
	}
	public boolean isDiscount() {
		return discount;
	}
	public void setDiscount(boolean discount) {
		this.discount = discount;
	}
	@Override
	public String toString() {
		return "Goods [商品=" + name + ", 价格=" + price + ", 是否打折=" + (discount?"YES":"NO") + "]";
	}
}

public class Level {
	private String name;
	private String level;
	public Level() {
		// TODO Auto-generated constructor stub
	}
	public Level(String name, String level) {
		super();
		this.name = name;
		this.level = level;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getLevel() {
		return level;
	}
	public void setLevel(String level) {
		this.level = level;
	}
	@Override
	public String toString() {
		return "Level [name=" + name + ", level=" + level + "]";
	}
}