抽象工厂模式（Abstract Factory）（对象创建型模式）

参考文档：

1.设计模式书籍

2.http://blog.csdn.NET/eson_15/article/details/51253161(【Java设计模式】之 抽象工厂（Abstract Factory）模式)

3.http://blog.csdn.net/hguisu/article/details/7505909（设计模式（一）工厂模式Factory（创建型））

4.http://blog.csdn.Net/zhshulin/article/details/38349211（设计模式——抽象工厂模式（Abstract Factory））

理论方面的知识，可以查看上面的  参考文档中的内容。

我们来看看Abstract Factory模式的结构：

就长上面这样，看起来还是比较简单的。。。

下面，我们来看看书上说的迷宫的案例。

类图：

实现之后，大概就是这个样子的吧。。。

代码实现：

MazeFactory.java:

package com.rick.designpattern.abstract_factory2;

/**
 * Created by MyPC on 2017/6/20.
 */
public class MazeFactory {

    public MazeFactory() {
    }

    public Maze makeMaxe() {
        return new Maze();
    }

    public Wall makeWall() {
        return new Wall();
    }

    public Room makeRoom(int n) {
        return new Room(n);
    }

    public Door makeDoor(Room r1, Room r2) {
        return new Door(r1, r2);
    }
}

Maze.java:

package com.rick.designpattern.abstract_factory2;import java.util.ArrayList;import java.util.List;/** * 迷宫 * <p> * Created by MyPC on 2017/6/20. */public class Maze {    private List<Room> rooms;    public Maze() {        this.rooms = new ArrayList<Room>();    }    public void addRoom(Room room) {        rooms.add(room);    }}

Wall.java:

package com.rick.designpattern.abstract_factory2;/** * 墙 * * Created by MyPC on 2017/6/20. */public class Wall {}

Room.java:

package com.rick.designpattern.abstract_factory2;import java.util.HashMap;import java.util.Map;/** * 房间 * <p> * Created by MyPC on 2017/6/20. */public class Room {    private int n;    private Map<String, Object> wallAndRoomMap = new HashMap<String, Object>();    public Room(int n) {        this.n = n;    }    public void setSide(String direction, Object o) {        wallAndRoomMap.put(direction, o);    }}

Door.java:

package com.rick.designpattern.abstract_factory2;/** * 门 * <p> * Created by MyPC on 2017/6/20. */public class Door {    private Room r1, r2;    public Door(Room r1, Room r2) {        this.r1 = r1;        this.r2 = r2;    }}

EnchantedMazeFactory.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class EnchantedMazeFactory extends MazeFactory {    public EnchantedMazeFactory() {    }    @Override    public Room makeRoom(int n) {        return new EnchantedRoom(n, castSpell());    }    @Override    public Door makeDoor(Room r1, Room r2) {        return new DoorNeedingSpell(r1, r2);    }    private Spell castSpell() {        return new Spell();    }}

EnchantedRoom.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class EnchantedRoom extends Room {    private Spell spell;    public EnchantedRoom(int n, Spell spell) {        super(n);        this.spell = spell;    }}

Spell.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class Spell {}

DoorNeedingSpell.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class DoorNeedingSpell extends Door {    public DoorNeedingSpell(Room r1, Room r2) {        super(r1, r2);    }}

BombedMazeFactory.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class BombedMazeFactory extends MazeFactory {    @Override    public Wall makeWall() {        return new BombedWall();    }    @Override    public Room makeRoom(int n) {        return new RoomWithABomb(n);    }}

BombedWall.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class BombedWall extends Wall {}

RoomWithABomb.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class RoomWithABomb extends Room {    public RoomWithABomb(int n) {        super(n);    }}

MazeGame.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class MazeGame {    public Maze createMaze(MazeFactory factory) {        Maze maze = factory.makeMaxe();        Room r1 = factory.makeRoom(1);        Room r2 = factory.makeRoom(2);        Door door = factory.makeDoor(r1, r2);        maze.addRoom(r1);        maze.addRoom(r2);        r1.setSide("north", factory.makeWall());        r1.setSide("east", door);        r1.setSide("south", factory.makeWall());        r1.setSide("west", factory.makeWall());        r2.setSide("north", factory.makeWall());        r2.setSide("east", factory.makeWall());        r2.setSide("south", factory.makeWall());        r2.setSide("west", door);        return maze;    }}

Client.java:

package com.rick.designpattern.abstract_factory2;/** * Created by MyPC on 2017/6/20. */public class Client {    public static void main(String[] args) {        MazeGame mazeGame = new MazeGame();        BombedMazeFactory bombedMazeFactory = new BombedMazeFactory();        mazeGame.createMaze(bombedMazeFactory);    }}