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anxppanxpp
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中介者模式
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6 files changed

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‎src/com/anxpp/designpattern/mediator/IPersistent.java‎

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package com.anxpp.designpattern.mediator;
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//同事（接口）
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public interface IPersistent {
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void getData(Object data);
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void getData(Object data,Midiator midiator);
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void saveData();
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}

‎src/com/anxpp/designpattern/mediator/Midiator.java‎

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package com.anxpp.designpattern.mediator;
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//具体中介者
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public class Midiator {
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PersistentDB persistentDB;
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PersistentFile persistentFile;
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public Midiator setPersistentDB(PersistentDB persistentDB) {
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this.persistentDB = persistentDB;
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return this;
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}
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public Midiator setPersistentFile(PersistentFile persistentFile) {
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this.persistentFile = persistentFile;
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return this;
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}
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public void notifyOther(IPersistent persistent,Object data){
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if(persistent instanceof PersistentDB)
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persistentFile.getData(data);
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if(persistent instanceof PersistentFile)
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persistentDB.getData(data);
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}
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}

‎src/com/anxpp/designpattern/mediator/PersistentDB.java‎

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package com.anxpp.designpattern.mediator;
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//具体同事
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public class PersistentDB implements IPersistent{
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private Object data;
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@Override
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public void getData(Object data, Midiator midiator) {
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getData(data);
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midiator.notifyOther(this, data);
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}
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@Override
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public void saveData() {
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System.out.println(data + " 已保存到数据库");
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}
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@Override
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public void getData(Object data) {
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this.data = data;
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saveData();
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}
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}

‎src/com/anxpp/designpattern/mediator/PersistentFile.java‎

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package com.anxpp.designpattern.mediator;
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//具体同事
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public class PersistentFile implements IPersistent{
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private Object data;
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@Override
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public void getData(Object data, Midiator midiator) {
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getData(data);
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midiator.notifyOther(this, data);
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}
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@Override
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public void saveData() {
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System.out.println(data + " 已保存到文件");
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}
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@Override
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public void getData(Object data) {
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this.data = data;
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saveData();
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}
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}

‎src/com/anxpp/designpattern/mediator/TestUse.java‎

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package com.anxpp.designpattern.mediator;
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public class TestUse {
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public static void main(String args[]){
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Object data = "数据";
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PersistentDB persistentDB = new PersistentDB();
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PersistentFile persistentFile = new PersistentFile();
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Midiator midiator = new Midiator();
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midiator.setPersistentDB(persistentDB).setPersistentFile(persistentFile);
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persistentDB.getData(data, midiator);
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persistentFile.getData(data, midiator);
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}
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}

‎src/com/anxpp/designpattern/mediator/package-info.java‎

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/**
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* @author Administrator
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* 中介者模式
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*/
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package com.anxpp.designpattern.mediator;

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