more patterns

Author: totoLab

ingSoftware/designPatterns/src/main/java/comportamentali/observer/Client.java

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+package comportamentali.observer;
+
+public class Client {
+
+ public static void main(String[] args) {
+
+ RssFeed feed = new DesktopRssFeed();
+
+ RssProvider provider = new SportRssProvider();
+ provider.attach(feed);
+
+ provider.sendNotification();
+ }
+}

ingSoftware/designPatterns/src/main/java/comportamentali/observer/DesktopRssFeed.java

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+package comportamentali.observer;
+
+import java.util.ArrayList;
+import java.util.LinkedList;
+import java.util.List;
+
+public class DesktopRssFeed extends RssFeed {
+
+ final private int maxEntries = 10;
+ List<Entry> entries = new LinkedList<>();
+
+
+ @Override
+ public void update() {
+ for (Entry entry : rssProvider.getData()) {
+ addOne(entry);
+ }
+ }
+
+ void addOne(Entry entry) {
+ if (entries.size() >= maxEntries) {
+ entries.removeFirst();
+ }
+ entries.add(entry);
+ }
+}

ingSoftware/designPatterns/src/main/java/comportamentali/observer/EconomicsRssProvider.java

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+package comportamentali.observer;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class EconomicsRssProvider extends RssProvider {
+
+ List<Article> articles = new ArrayList<>();
+
+ public class Article {
+ Date date;
+ String title;
+ String text;
+
+ public Article(Date date, String title, String text) {
+ this.date = date;
+ this.title = title;
+ this.text = text;
+ }
+
+ public Date getDate() {
+ return date;
+ }
+
+ public String getText() {
+ return text;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+ }
+
+ public List<Entry> getData() {
+ List<Entry> newEntries = new ArrayList<>();
+ for (EconomicsRssProvider.Article article : articles) {
+ Entry entry = new Entry(
+ article.getTitle(),
+ article.getText()
+ );
+ newEntries.add(entry);
+ }
+ return newEntries;
+ }
+}

ingSoftware/designPatterns/src/main/java/comportamentali/observer/Entry.java

@@ -0,0 +1,19 @@
+package comportamentali.observer;
+
+public class Entry {
+ private String title;
+ private String text;
+
+ public Entry(String title, String text) {
+ this.title = title;
+ this.text = text;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public String getText() {
+ return text;
+ }
+}

ingSoftware/designPatterns/src/main/java/comportamentali/observer/RssFeed.java

@@ -0,0 +1,12 @@
+package comportamentali.observer;
+
+public abstract class RssFeed {
+
+ protected RssProvider rssProvider;
+
+ public void setRssProvider(RssProvider provider) {
+ this.rssProvider = provider;
+ }
+
+ abstract void update();
+}

ingSoftware/designPatterns/src/main/java/comportamentali/observer/RssProvider.java

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+package comportamentali.observer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class RssProvider {
+
+ private List<RssFeed> observers;
+
+ public RssProvider() {
+ this.observers = new ArrayList<>();
+ }
+
+ public void attach(RssFeed feed) {
+ observers.add(feed);
+ feed.setRssProvider(this);
+ }
+
+ public void detach(RssFeed feed) {
+ observers.remove(feed);
+ }
+
+ public void sendNotification() {
+ for (RssFeed feed : observers) {
+ feed.update();
+ }
+ }
+
+ abstract List<Entry> getData();
+}

ingSoftware/designPatterns/src/main/java/comportamentali/observer/SportRssProvider.java

@@ -0,0 +1,58 @@
+package comportamentali.observer;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class SportRssProvider extends RssProvider {
+
+ List<Game> games = new ArrayList<>();
+
+ public class Game {
+ Date date;
+ String club1;
+ String club2;
+ int score1;
+ int score2;
+
+ public Game(Date date, String club1, String club2, int score1, int score2) {
+ this.date = date;
+ this.club1 = club1;
+ this.club2 = club2;
+ this.score1 = score1;
+ this.score2 = score2;
+ }
+
+ public Date getDate() {
+ return date;
+ }
+
+ public int getScore1() {
+ return score1;
+ }
+
+ public int getScore2() {
+ return score2;
+ }
+
+ public String getClub1() {
+ return club1;
+ }
+
+ public String getClub2() {
+ return club2;
+ }
+ }
+
+ public List<Entry> getData() {
+ List<Entry> newEntries = new ArrayList<>();
+ for (SportRssProvider.Game game : games) {
+ Entry entry = new Entry(
+ String.format("%s vs %s", game.getClub1(), game.getClub2()),
+ String.format("On %s the game ended %s %d - %s %d.", game.getDate(), game.getClub1(), game.getScore1(), game.getClub2(), game.getScore2())
+ );
+ newEntries.add(entry);
+ }
+ return newEntries;
+ }
+}

ingSoftware/designPatterns/src/main/java/comportamentali/state/Client.java

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+package comportamentali.state;
+
+import comportamentali.state.states.Forno;
+import comportamentali.state.states.FornoState;
+
+public class Client {
+
+ public static void main(String[] args) {
+ Forno forno = new Forno();
+
+ forno.apri();
+ forno.chiudi();
+
+ forno.start();
+
+ // interrompi bruscamente
+ forno.apri();
+ forno.chiudi();
+
+ // riprendi
+ forno.start();
+
+ // estendi
+ forno.start();
+
+ // interrompi normalmente
+ forno.stop();
+
+ // riparti
+ forno.start();
+
+ forno.apri();
+ }
+}

ingSoftware/designPatterns/src/main/java/comportamentali/state/states/CotturaEstesa.java

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+package comportamentali.state.states;
+
+public class CotturaEstesa extends FornoState {
+
+ public CotturaEstesa(Forno forno) {
+ super(forno);
+ forno.addSecondsRemaining(60);
+ }
+
+ @Override
+ public void start() {
+ forno.changeState(new CotturaEstesa(forno));
+ }
+
+ @Override
+ public void stop() {
+
+ }
+
+ @Override
+ public void apri() {
+ forno.changeState(new CotturaInterrotta(forno));
+ }
+
+ @Override
+ public void chiudi() {
+
+ }
+}

ingSoftware/designPatterns/src/main/java/comportamentali/state/states/CotturaInterrotta.java

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+package comportamentali.state.states;
+
+public class CotturaInterrotta extends FornoState {
+
+
+ public CotturaInterrotta(Forno forno) {
+ super(forno);
+ forno.setTubo(false);
+ forno.setSecondsRemaining(0);
+ }
+
+ @Override
+ public void start() {
+
+ }
+
+ @Override
+ public void stop() {
+
+ }
+
+ @Override
+ public void apri() {
+
+ }
+
+ @Override
+ public void chiudi() {
+ forno.changeState(new PortaChiusa(forno));
+ }
+}