import ueb05_news_example

ueb05_news_example/src/client/Client.java

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+package client;
+
+import model.Article;
+import model.Image;
+import model.NewsCollection;
+
+public class Client {
+	
+	public static void main(String[] args) {
+		NewsCollection masterCollection = new NewsCollection("Daily news");
+		masterCollection.addCollection(new NewsCollection("Sports")
+				.addArticle(new Article("Harder, Better, Faster, Stronger. Doping controls loosened","ups"))
+				.addImage(new Image("Athletic cat contest", 800, 600, "zdf")))
+		.addCollection(new NewsCollection("Local news")
+				.addArticle(new Article("Missing Cat missed.", "mfg"))
+				.addArticle(new Article("Corrupted local politician selling cats.", "ard"))
+				.addImage(new Image("Missing cat", 1280, 720, "anonymous")));
+		
+		System.out.println("\n===List===\n");
+		System.out.print(getOverviewInformation(masterCollection));
+		System.out.println("\n===Contents===\n");
+		System.out.print(getDetailedInformation(masterCollection));
+	}
+	
+	/**
+	 * Gets overview information about all directly or transitively
+	 * referenced items in the given collection.
+	 */	
+	public static String getOverviewInformation(NewsCollection rootCollection) {
+		StringBuilder builder = new StringBuilder();
+		builder.append("###" + rootCollection.getTopic() + "###");
+		builder.append("\n");
+		for (Article article : rootCollection.getArticles()) {
+			builder.append("Article: " + article.getTitle() + ", Author: "
+					+ article.getAuthor());
+			builder.append("\n");
+		}
+		for (Image image : rootCollection.getImages()) {
+			builder.append("Image: " + image.getTitle()
+					+ ", Resolution: " + image.getWidth() 
+					+ "x" + image.getHeight() 
+					+ ", Author: " + image.getAuthor());
+			builder.append("\n");
+		}
+		for (NewsCollection collection : rootCollection.getCollections()) {
+			builder.append(getOverviewInformation(collection));
+			builder.append("\n");
+		}
+		return builder.toString();
+	}
+	
+	/**
+	 * Gets the contents of all directly or transitively referenced items in
+	 * the given collection.
+	 */	
+	public static String getDetailedInformation(NewsCollection rootCollection) {
+		StringBuilder builder = new StringBuilder();
+		builder.append("###" + rootCollection.getTopic() + "###");
+		builder.append("\n");
+		for (Article article : rootCollection.getArticles()) {
+			builder.append("###" + article.getTitle() + "###");
+			builder.append("\n");
+			builder.append(article.getContent());
+			builder.append("\n\n");
+		}
+		for (Image image : rootCollection.getImages()) {
+			builder.append("###" + image.getTitle() + "###");
+			builder.append("\n");
+			builder.append(image.renderToString());
+			builder.append("\n\n");
+		}
+		for (NewsCollection collection : rootCollection.getCollections()) {
+			builder.append(getDetailedInformation(collection));
+		}
+		return builder.toString();
+	}	
+}

ueb05_news_example/src/model/Article.java

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+package model;
+
+public class Article {
+	private String title;
+	private String author;
+	private String content;
+	
+	// Fill in dummy content
+	{
+		content = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, "
+				+ "sed diam nonumy eirmod tempor invidunt ut labore et dolore "
+				+ "magna aliquyam erat, sed diam voluptua. At vero eos et "
+				+ "accusam et justo duo dolores et ea rebum.";
+	}
+	
+	/**
+	 * Creates an article with the given title and author.
+	 * @param title
+	 * @param author
+	 */
+	public Article(String title, String author) {
+		this.title = title;
+		this.author = author;
+	}
+	
+	/**
+	 * Get the title of the article.
+	 * @return title
+	 */
+	public String getTitle() {
+		return title;
+	}
+	
+	/**
+	 * Get the author of the article.
+	 * @return author
+	 */
+	public String getAuthor() {
+		return author;
+	}
+	
+	/**
+	 * Get the content of the article.
+	 * @return
+	 */
+	public String getContent() {
+		return content;
+	}
+}

ueb05_news_example/src/model/Image.java

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+package model;
+
+public class Image {
+	private String title;
+	private String author;
+	private int width;
+	private int height;
+	
+	/**
+	 * Creates an image with the given title and author and a resolution 
+	 * defined by width and height. 
+	 * @param title
+	 * @param width
+	 * @param height
+	 * @param author
+	 */
+	public Image(String title, int width, int height, String author) {
+		this.title = title;
+		this.width = width;
+		this.height = height;
+		this.author = author;
+	}
+	
+	/**
+	 * Get the title of the image.
+	 * @return title
+	 */
+	public String getTitle() {
+		return title;
+	}
+	
+	/**
+	 * Get the author of the image.
+	 * @return author
+	 */
+	public String getAuthor() {
+		return author;
+	}
+	
+	/**
+	 * Get the width of the image.
+	 * @return width
+	 */
+	public int getWidth() {
+		return width;
+	}
+
+	/**
+	 * Get the height of the image.
+	 * @return height
+	 */
+	public int getHeight() {
+		return height;
+	}
+		
+	/**
+	 * Renders the image as String and return the rendered image.
+	 * @return String representing the rendered image
+	 */
+	public String renderToString() {
+		/*
+		 *  Dummy implementation
+		 */
+		return " /\\_/\\ \n( o.o )\n > ^ < ";
+	}
+}

ueb05_news_example/src/model/NewsCollection.java

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+package model;
+
+import java.util.LinkedList;
+import java.util.List;
+
+public class NewsCollection {
+	
+	private String topic;
+	private List<Article> articles = new LinkedList<Article>();
+	private List<Image> images = new LinkedList<Image>();
+	private List<NewsCollection> collections = new LinkedList<NewsCollection>();
+		
+	public NewsCollection(String topic) {
+		this.topic = topic;
+	}
+	
+	/**
+	 * Get the topic of the collection.
+	 * @return
+	 */
+	public String getTopic() {
+		return topic;
+	}
+	/**
+	 * Get the list of articles stored directly in this collection.
+	 * @return articles stored in this collection
+	 */
+	public List<Article> getArticles() {
+		return articles;
+	}
+	
+	/**
+	 * Get the list of images stored directly in this collection.
+	 * @return images stored in this collection
+	 */
+	public List<Image> getImages() {
+		return images;
+	}
+	
+	/**
+	 * Get the list of collections stored directly in this collection.
+	 * @return collections stored in this collection
+	 */
+	public List<NewsCollection> getCollections() {
+		return collections;
+	}
+	
+	/**
+	 * Store an article directly in this collection.
+	 * @param article
+	 * @return this collection (enables method chaining)
+	 */
+	public NewsCollection addArticle(Article article) {
+		articles.add(article);
+		return this;
+	}
+	
+	/**
+	 * Store an image directly in this collection.
+	 * @param image
+	 * @return this collection (enables method chaining)
+	 */
+	public NewsCollection addImage(Image image) {
+		images.add(image);
+		return this;
+	}
+		
+	/**
+	 * Store another collection directly in this collection.
+	 * @param collection
+	 * @return this collection (enables method chaining)
+	 */
+	public NewsCollection addCollection(NewsCollection collection) {
+		collections.add(collection);
+		return this;
+	}
+}