OUIIIIII

src/com/uca/dao/UserDAO.java

+package com.uca.dao;
+
+import com.uca.entity.UserEntity;
+
+import java.sql.*;
+import java.util.ArrayList;
+
+public class UserDAO extends _Generic<UserEntity> {
+
+    public ArrayList<UserEntity> getAllUsers() {
+        ArrayList<UserEntity> entities = new ArrayList<>();
+        try {
+            PreparedStatement preparedStatement = this.connect.prepareStatement("SELECT * FROM users ORDER BY id ASC;");
+            ResultSet resultSet = preparedStatement.executeQuery();
+            while (resultSet.next()) {
+                UserEntity entity = new UserEntity();
+                entity.setId(resultSet.getInt("id"));
+                entity.setFirstName(resultSet.getString("firstname"));
+                entity.setLastName(resultSet.getString("lastname"));
+
+                entities.add(entity);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+
+        return entities;
+    }
+
+    @Override
+    public UserEntity create(UserEntity obj) {
+        //TODO !
+        return null;
+    }
+
+    @Override
+    public void delete(UserEntity obj) {
+        //TODO !
+    }
+}

src/com/uca/dao/_Connector.java

+package com.uca.dao;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class _Connector {
+
+    private static String url = "jdbc:h2:~/test";
+
+    private static String user = "sa";
+
+    private static String passwd = "";
+
+    private static Connection connect;
+
+    public static Connection getInstance(){
+        if(connect == null){
+            try {
+                connect = DriverManager.getConnection(url, user, passwd);
+            } catch (SQLException e) {
+                e.printStackTrace();
+            }
+        }
+        return connect;
+    }
+
+
+}

src/com/uca/dao/_Generic.java

+package com.uca.dao;
+
+import java.sql.Connection;
+
+public abstract class _Generic<T> {
+
+    public Connection connect = _Connector.getInstance();
+
+    /**
+     * Permet de créer une entrée dans la base de données
+     * par rapport à un objet
+     * @param obj
+     */
+    public abstract T create(T obj);
+
+    /**
+     * Permet la suppression d'une entrée de la base
+     * @param obj
+     */
+    public abstract void delete(T obj);
+
+}

src/com/uca/dao/_Initializer.java

+package com.uca.dao;
+
+import java.sql.*;
+
+public class _Initializer {
+
+    public static void Init(){
+        Connection connection = _Connector.getInstance();
+
+        try {
+            PreparedStatement statement;
+
+            //Init articles table
+            statement = connection.prepareStatement("CREATE TABLE IF NOT EXISTS users (id int primary key auto_increment, firstname varchar(100), lastname varchar(100)); ");
+            statement.executeUpdate();
+
+            //Todo Remove me !
+            statement = connection.prepareStatement("INSERT INTO users(firstname, lastname) VALUES(?, ?);");
+            statement.setString(1, "Theodore");
+            statement.setString(2, "Muillerez");
+            statement.executeUpdate();
+
+        } catch (Exception e){
+            System.out.println(e.toString());
+            throw new RuntimeException("could not create database !");
+        }
+    }
+}

src/com/uca/entity/Eleve.java

+package com.uca.entity;
+
+public class Eleve extends UserEntity
+{
+
+}

src/com/uca/entity/Gomette.java

+package com.uca.entity;
+
+import java.sql.Timestamp;
+
+
+public class Gomette
+{
+    public enum Couleur { Verte, Rouge, Blanc, ArcEnCiel }
+
+    private Couleur couleur;
+    public Couleur couleur() { return couleur; } 
+
+    private String description;
+    public  String description() { return description; } 
+
+    private Eleve recipiendaire;
+    public  Eleve recipiendaire() { return recipiendaire; } 
+
+    private Prof attribuant; 
+    public  Prof attribuant() { return attribuant; } 
+
+    private Date date; 
+    public  Date date() { return date; } 
+
+    public Gomette(Couleur couleur, String description, Eleve recipiendaire, Prof attribuant, Date date)
+    {
+        this.couleur       = couleur;
+        this.description   = description;
+        this.recipiendaire = recipiendaire;
+        this.attribuant    = attribuant;
+        this.date          = date;
+    } 
+}

src/com/uca/entity/Prof.java

+package com.uca.entity;
+
+public class Prof : UserEntity
+{
+
+}

src/com/uca/entity/UserEntity.java

+package com.uca.entity;
+
+import java.sql.Timestamp;
+import java.util.*;
+
+public class UserEntity {
+    private String firstName;
+    private String lastName;
+    private int id;
+    private Set<Gomette> gomettes;
+
+    public UserEntity() {
+        //Ignored !
+        load();
+    }
+
+    private void load()
+    {
+        gomettes = new HashSet<Gomette>();
+    } 
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public boolean ajouterGomette(Gomette g)
+    {
+        return gomettes.add(g);
+    }
+}

src/com/uca/gui/UserGUI.java

+package com.uca.gui;
+
+import com.uca.core.UserCore;
+import freemarker.template.Configuration;
+import freemarker.template.Template;
+import freemarker.template.TemplateException;
+
+import java.io.IOException;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.util.HashMap;
+import java.util.Map;
+
+public class UserGUI {
+
+    public static String getAllUsers() throws IOException, TemplateException {
+        Configuration configuration = _FreeMarkerInitializer.getContext();
+
+        Map<String, Object> input = new HashMap<>();
+
+        input.put("users", UserCore.getAllUsers());
+
+        Writer output = new StringWriter();
+        Template template = configuration.getTemplate("users/users.ftl");
+        template.setOutputEncoding("UTF-8");
+        template.process(input, output);
+
+        return output.toString();
+    }
+}

src/com/uca/gui/_FreeMarkerInitializer.java

+package com.uca.gui;
+
+import com.uca.StartServer;
+import freemarker.template.Configuration;
+import freemarker.template.TemplateExceptionHandler;
+
+import java.util.Locale;
+
+public class _FreeMarkerInitializer {
+
+    public static Configuration getContext() {
+        //Configure FreeMarker
+        Configuration configuration = new Configuration(Configuration.VERSION_2_3_30);
+        configuration.setClassForTemplateLoading(StartServer.class, "/views");
+        configuration.setDefaultEncoding("UTF-8");
+        configuration.setLocale(Locale.FRANCE);
+        configuration.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
+
+        return configuration;
+    }
+}

src/main/resources/views/users/users.ftl

+<#ftl encoding="utf-8">
+
+<body xmlns="http://www.w3.org/1999/html">
+
+<ul>
+    <#list users as user>
+        <li>${user.id} - ${user.firstName} ${user.lastName}</li>
+    </#list>
+</ul>
+
+</body>
+
+</html>