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JamesZBLJamesZBL
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完成 观察者模式 Sample
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7 files changed

+302
-2
lines changed

7 files changed

+302
-2
lines changed

‎decorator/README.md

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@@ -111,9 +111,9 @@ public class HammerSmithOperation implements Operation {
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/**
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* Decorator
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*/
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public class Application {
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public class me.zbl.ovserver.Application {
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private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
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private static final Logger LOGGER = LoggerFactory.getLogger(me.zbl.ovserver.Application.class);
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public static void main(String[] args) {
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LOGGER.info("仅由木匠制作锤把");

‎observer/src/main/java/me/zbl/observer/Application.java

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* <p>
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* <p>
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package me.zbl.observer;
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/**
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* Observer
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*/
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public class Application {
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public static void main(String[] args) {
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Time time = new Time();
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time.addObserver(new Northern());
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time.addObserver(new Southern());
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time.passing();
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time.passing();
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time.passing();
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time.passing();
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time.passing();
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time.passing();
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time.passing();
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time.passing();
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time.passing();
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}
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}

‎observer/src/main/java/me/zbl/observer/Northern.java

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* <p>
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* <p>
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package me.zbl.observer;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* 北方人
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*/
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public class Northern implements TimeObserver {
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private static final Logger LOGGER = LoggerFactory.getLogger(Northern.class);
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@Override
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public void update(TimePoint time) {
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LOGGER.info("北方人吃饭了");
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switch (time) {
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case MORNING:
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LOGGER.info("煎饼果子");
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break;
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case NOON:
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LOGGER.info("炸酱面");
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break;
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case AFTERNOON:
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LOGGER.info("牛奶");
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break;
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case EVENING:
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LOGGER.info("包子");
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break;
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default:
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break;
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}
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}
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}

‎observer/src/main/java/me/zbl/observer/Southern.java

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* <p>
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* <p>
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package me.zbl.observer;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* 南方人
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*/
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public class Southern implements TimeObserver {
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private static final Logger LOGGER = LoggerFactory.getLogger(Southern.class);
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@Override
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public void update(TimePoint time) {
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LOGGER.info("南方人吃饭了");
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switch (time) {
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case MORNING:
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LOGGER.info("热干面");
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break;
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case NOON:
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LOGGER.info("米饭");
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break;
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case AFTERNOON:
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LOGGER.info("茶");
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break;
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case EVENING:
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LOGGER.info("鱼");
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break;
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default:
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break;
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}
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}
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}

‎observer/src/main/java/me/zbl/observer/Time.java

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* <p>
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* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
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* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
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*/
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package me.zbl.observer;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* 时间
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*/
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public class Time {
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private static final Logger LOGGER = LoggerFactory.getLogger(Time.class);
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private TimePoint point;
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private List<TimeObserver> observers;
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public Time() {
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this.point = TimePoint.MORNING;
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observers = new ArrayList<>();
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}
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public void addObserver(TimeObserver observer) {
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observers.add(observer);
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}
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public void removeObserver(TimeObserver observer) {
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observers.remove(observer);
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}
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public void passing() {
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TimePoint[] points = TimePoint.values();
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point = points[(point.ordinal() + 1) % points.length];
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LOGGER.info("时间来到了{}", point);
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notifyObservers();
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}
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public void notifyObservers() {
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for (TimeObserver observer : observers) {
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observer.update(point);
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}
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}
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}

‎observer/src/main/java/me/zbl/observer/TimeObserver.java

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
5+
* <p>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
23+
*/
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package me.zbl.observer;
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/**
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* 时间观察者接口
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*/
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public interface TimeObserver {
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void update(TimePoint time);
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}

‎observer/src/main/java/me/zbl/observer/TimePoint.java

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/**
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* MIT License
3+
* <p>
4+
* Copyright (c) 2017 James
5+
* <p>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
23+
*/
24+
package me.zbl.observer;
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/**
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* 一天中的几个时间点
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*/
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public enum TimePoint {
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MORNING("早晨"), NOON("中午"), AFTERNOON("下午"), EVENING("晚上");
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private String name;
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TimePoint(String name) {
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this.name = name;
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}
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@Override
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public String toString() {
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return name;
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}
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}

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