JAVA 设计模式 迭代器模式

用途


迭代器模式 (Iterator)

提供一种方法顺序访问一个聚合对象中各个元素,而又不暴露该对象的内部表示
迭代器模式是一种行为型模式
结构

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*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" alt="" />

图-迭代器模式结构图

Iterator : 定义访问元素的接口。

interface Iterator {

    public Object first();

    public Object next();

    public boolean isDone();

    public Object currentItem();

}

ConcreteIterator : 实现 Iterator
接口。记录当前访问的元素在集合中的位置信息。


class ConcreteIterator implements Iterator {

    private int current = 0;

    private ConcreteAggregate aggregate;

    

    public ConcreteIterator(ConcreteAggregate aggregate) {

        this.aggregate = aggregate;

    }

    @Override

    public Object first() {

        return aggregate.get(0);

    }

    @Override

    public Object next() {

        current++;

        if (current < aggregate.size()) {

            return aggregate.get(current);

        }

        return null;

    }

    @Override

    public boolean isDone() {

        return (current >= aggregate.size()) ? true : false;

    }

    @Override

    public Object currentItem() {

        return aggregate.get(current);

    }

}

Aggregate : 定义创建 Iterator
对象的接口。


interface Aggregate {

    public Iterator CreateIterator();

}

ConcreteAggregate : 实现
Iterator 接口,返回一个合适的 ConcreteIterator 实例。


class ConcreteAggregate implements Aggregate {

    private List<Object> items = new ArrayList<Object>();

    

    @Override

    public Iterator CreateIterator() {

        return new ConcreteIterator(this);

    }

    

    public int size() {

        return items.size();

    }

    

    public Object get(int index) {

        return items.get(index);

    }

    

    public void set(int index, Object element) {

        items.set(index, element);

    }

    

    public void add(Object element) {

        items.add(element);

    }

}

测试代码


public class IteratorPattern {

    public static void main(String[] args) {

        ConcreteAggregate aggregate = new ConcreteAggregate();

        aggregate.add("张三");

        aggregate.add("李四");

        aggregate.add("王五");

        aggregate.add("赵六");

        

        Iterator iter = new ConcreteIterator(aggregate);

        Object item = iter.first();

        System.out.println("第一个人是:" + item);

        System.out.println("所有人的名单是:");

        while (!iter.isDone()) {

            System.out.println(iter.currentItem());

            iter.next();

        }

    }

}

运行结果

第一个人是:张三

所有人的名单是:

张三

李四

王五

赵六
应用场景

访问一个聚合对象的内容而无需暴露它的内部表示。
支持对聚合对象的多种遍历。
为遍历不同的聚合结构提供一个统一的接口。
推荐

本文属于 JAVA设计模式系列

参考资料

《大话设计模式》

《HeadFirst设计模式》

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