DAO Othemane

sae/README.md

+# S4.A02.1-H-Adrien.fryson-Othemane.khachnane
+
+
+
+## Getting started
+
+To make it easy for you to get started with GitLab, here's a list of recommended next steps.
+
+Already a pro? Just edit this README.md and make it your own. Want to make it easy? [Use the template at the bottom](#editing-this-readme)!
+
+## Add your files
+
+- [ ] [Create](https://docs.gitlab.com/ee/user/project/repository/web_editor.html#create-a-file) or [upload](https://docs.gitlab.com/ee/user/project/repository/web_editor.html#upload-a-file) files
+- [ ] [Add files using the command line](https://docs.gitlab.com/ee/gitlab-basics/add-file.html#add-a-file-using-the-command-line) or push an existing Git repository with the following command:
+
+```
+cd existing_repo
+git remote add origin https://gitlab.univ-lille.fr/othemane.khachnane.etu/s4.a02.1-h-adrien.fryson-othemane.khachnane.git
+git branch -M main
+git push -uf origin main
+```
+
+## Integrate with your tools
+
+- [ ] [Set up project integrations](https://gitlab.univ-lille.fr/othemane.khachnane.etu/s4.a02.1-h-adrien.fryson-othemane.khachnane/-/settings/integrations)
+
+## Collaborate with your team
+
+- [ ] [Invite team members and collaborators](https://docs.gitlab.com/ee/user/project/members/)
+- [ ] [Create a new merge request](https://docs.gitlab.com/ee/user/project/merge_requests/creating_merge_requests.html)
+- [ ] [Automatically close issues from merge requests](https://docs.gitlab.com/ee/user/project/issues/managing_issues.html#closing-issues-automatically)
+- [ ] [Enable merge request approvals](https://docs.gitlab.com/ee/user/project/merge_requests/approvals/)
+- [ ] [Set auto-merge](https://docs.gitlab.com/ee/user/project/merge_requests/merge_when_pipeline_succeeds.html)
+
+## Test and Deploy
+
+Use the built-in continuous integration in GitLab.
+
+- [ ] [Get started with GitLab CI/CD](https://docs.gitlab.com/ee/ci/quick_start/index.html)
+- [ ] [Analyze your code for known vulnerabilities with Static Application Security Testing (SAST)](https://docs.gitlab.com/ee/user/application_security/sast/)
+- [ ] [Deploy to Kubernetes, Amazon EC2, or Amazon ECS using Auto Deploy](https://docs.gitlab.com/ee/topics/autodevops/requirements.html)
+- [ ] [Use pull-based deployments for improved Kubernetes management](https://docs.gitlab.com/ee/user/clusters/agent/)
+- [ ] [Set up protected environments](https://docs.gitlab.com/ee/ci/environments/protected_environments.html)
+
+***
+
+# Editing this README
+
+When you're ready to make this README your own, just edit this file and use the handy template below (or feel free to structure it however you want - this is just a starting point!). Thanks to [makeareadme.com](https://www.makeareadme.com/) for this template.
+
+## Suggestions for a good README
+
+Every project is different, so consider which of these sections apply to yours. The sections used in the template are suggestions for most open source projects. Also keep in mind that while a README can be too long and detailed, too long is better than too short. If you think your README is too long, consider utilizing another form of documentation rather than cutting out information.
+
+## Name
+Choose a self-explaining name for your project.
+
+## Description
+Let people know what your project can do specifically. Provide context and add a link to any reference visitors might be unfamiliar with. A list of Features or a Background subsection can also be added here. If there are alternatives to your project, this is a good place to list differentiating factors.
+
+## Badges
+On some READMEs, you may see small images that convey metadata, such as whether or not all the tests are passing for the project. You can use Shields to add some to your README. Many services also have instructions for adding a badge.
+
+## Visuals
+Depending on what you are making, it can be a good idea to include screenshots or even a video (you'll frequently see GIFs rather than actual videos). Tools like ttygif can help, but check out Asciinema for a more sophisticated method.
+
+## Installation
+Within a particular ecosystem, there may be a common way of installing things, such as using Yarn, NuGet, or Homebrew. However, consider the possibility that whoever is reading your README is a novice and would like more guidance. Listing specific steps helps remove ambiguity and gets people to using your project as quickly as possible. If it only runs in a specific context like a particular programming language version or operating system or has dependencies that have to be installed manually, also add a Requirements subsection.
+
+## Usage
+Use examples liberally, and show the expected output if you can. It's helpful to have inline the smallest example of usage that you can demonstrate, while providing links to more sophisticated examples if they are too long to reasonably include in the README.
+
+## Support
+Tell people where they can go to for help. It can be any combination of an issue tracker, a chat room, an email address, etc.
+
+## Roadmap
+If you have ideas for releases in the future, it is a good idea to list them in the README.
+
+## Contributing
+State if you are open to contributions and what your requirements are for accepting them.
+
+For people who want to make changes to your project, it's helpful to have some documentation on how to get started. Perhaps there is a script that they should run or some environment variables that they need to set. Make these steps explicit. These instructions could also be useful to your future self.
+
+You can also document commands to lint the code or run tests. These steps help to ensure high code quality and reduce the likelihood that the changes inadvertently break something. Having instructions for running tests is especially helpful if it requires external setup, such as starting a Selenium server for testing in a browser.
+
+## Authors and acknowledgment
+Show your appreciation to those who have contributed to the project.
+
+## License
+For open source projects, say how it is licensed.
+
+## Project status
+If you have run out of energy or time for your project, put a note at the top of the README saying that development has slowed down or stopped completely. Someone may choose to fork your project or volunteer to step in as a maintainer or owner, allowing your project to keep going. You can also make an explicit request for maintainers.

sae/WEB-INF/src/modele/FilDeDiscussion.java

+package modele;
+
+import java.sql.Timestamp;
+
+public class FilDeDiscussion {
+    private int id;
+    private String nom;
+    private Timestamp dateCreation;
+    private int createurId;
+
+    public FilDeDiscussion() {
+    }
+
+    public FilDeDiscussion(int id, String nom, Timestamp dateCreation, int createurId) {
+        this.id = id;
+        this.nom = nom;
+        this.dateCreation = dateCreation;
+        this.createurId = createurId;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getNom() {
+        return nom;
+    }
+
+    public void setNom(String nom) {
+        this.nom = nom;
+    }
+
+    public Timestamp getDateCreation() {
+        return dateCreation;
+    }
+
+    public void setDateCreation(Timestamp dateCreation) {
+        this.dateCreation = dateCreation;
+    }
+
+    public int getCreateurId() {
+        return createurId;
+    }
+
+    public void setCreateurId(int createurId) {
+        this.createurId = createurId;
+    }
+}

sae/WEB-INF/src/modele/FilDeDiscussionDAO.java

+package modele;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.util.ArrayList;
+import java.util.List;
+
+public class FilDeDiscussionDAO {
+
+    // Méthode pour récupérer un fil de discussion par son id
+    public FilDeDiscussion findById(int id) {
+        FilDeDiscussion f = new FilDeDiscussion();
+        try (Connection con = DS.instance.getConnection()) {
+            PreparedStatement ps = con.prepareStatement("SELECT * FROM fil_de_discussion WHERE id = ?");
+            ps.setInt(1, id);
+            ResultSet rs = ps.executeQuery();
+            if (rs.next()) {
+                f.setId(rs.getInt("id"));
+                f.setNom(rs.getString("nom"));
+                f.setDateCreation(rs.getTimestamp("date_creation"));
+                f.setCreateurId(rs.getInt("createur_id"));
+            } else {
+                System.out.println("Fil de discussion inexistant");
+            }
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+        }
+        return f;
+    }
+
+    // Méthode pour créer un fil de discussion
+    public void create(FilDeDiscussion filDeDiscussion) {
+        try (Connection con = DS.instance.getConnection()) {
+            PreparedStatement pstmt = con.prepareStatement("INSERT INTO fil_de_discussion (id, nom, date_creation, createur_id) VALUES (?, ?, ?, ?)");
+            pstmt.setInt(1, filDeDiscussion.getId());
+            pstmt.setString(2, filDeDiscussion.getNom());
+            pstmt.setTimestamp(3, filDeDiscussion.getDateCreation());
+            pstmt.setInt(4, filDeDiscussion.getCreateurId());
+            pstmt.executeUpdate();
+        } catch (Exception e) {
+            System.err.println(e.getMessage());    
+        }
+    }
+
+    // Méthode pour récupérer tous les fils de discussion
+    public List<FilDeDiscussion> findAll() {
+        List<FilDeDiscussion> filsDeDiscussion = new ArrayList<>();
+        try (Connection con = DS.instance.getConnection()) {
+            PreparedStatement ps = con.prepareStatement("SELECT * FROM fil_de_discussion");
+            ResultSet rs = ps.executeQuery();
+            while (rs.next()) {
+                FilDeDiscussion f = new FilDeDiscussion();
+                f.setId(rs.getInt("id"));
+                f.setNom(rs.getString("nom"));
+                f.setDateCreation(rs.getTimestamp("date_creation"));
+                f.setCreateurId(rs.getInt("createur_id"));
+                filsDeDiscussion.add(f);
+            }
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+        }
+        return filsDeDiscussion;
+    }
+
+    // Méthode pour supprimer un fil de discussion
+    public void delete(int id) {
+        try (Connection con = DS.instance.getConnection()) {
+            PreparedStatement pstmt = con.prepareStatement("DELETE FROM fil_de_discussion WHERE id = ?");
+            pstmt.setInt(1, id);
+            pstmt.executeUpdate();
+        } catch (Exception e) {
+            System.err.println(e.getMessage());
+        }
+    }
+    
+}

sae/script.sql

+DROP TABLE IF EXISTS Abonnement;
+DROP TABLE IF EXISTS Message;
+DROP TABLE IF EXISTS FilDeDiscussion;
+DROP TABLE IF EXISTS Utilisateur;
+
+CREATE TABLE Utilisateur (
+    id SERIAL PRIMARY KEY,
+    nom VARCHAR(100) NOT NULL,
+    email VARCHAR(100) UNIQUE NOT NULL,
+    mot_de_passe VARCHAR(255) NOT NULL,
+    date_inscription TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE FilDeDiscussion (
+    id SERIAL PRIMARY KEY,
+    nom VARCHAR(100) NOT NULL,
+    date_creation TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    createur_id INTEGER,
+    CONSTRAINT fk_createur FOREIGN KEY (createur_id) REFERENCES Utilisateur(id)
+        ON DELETE SET NULL
+);
+
+CREATE TABLE Message (
+    id SERIAL PRIMARY KEY,
+    contenu TEXT NOT NULL,
+    date_publication TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    fil_id INTEGER,
+    auteur_id INTEGER,
+    CONSTRAINT fk_fil FOREIGN KEY (fil_id) REFERENCES FilDeDiscussion(id)
+        ON DELETE CASCADE,
+    CONSTRAINT fk_auteur FOREIGN KEY (auteur_id) REFERENCES Utilisateur(id)
+        ON DELETE SET NULL
+);
+
+CREATE TABLE Abonnement (
+    utilisateur_id INTEGER,
+    fil_id INTEGER,
+    date_abonnement TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT pk_abonnement PRIMARY KEY (utilisateur_id, fil_id),
+    CONSTRAINT fk_utilisateur FOREIGN KEY (utilisateur_id) REFERENCES Utilisateur(id)
+        ON DELETE CASCADE,
+    CONSTRAINT fk_fil FOREIGN KEY (fil_id) REFERENCES FilDeDiscussion(id)
+        ON DELETE CASCADE
+);
+
+INSERT INTO Utilisateur (nom, email, mot_de_passe) VALUES
+('Alice', 'alice@example.com', MD5('password1')),
+('Bob', 'bob@example.com', MD5('password2')),
+('Charlie', 'charlie@example.com', MD5('password3'));
+
+INSERT INTO FilDeDiscussion (nom, createur_id) VALUES
+('Discussion Générale', 1),
+('Projet Informatique', 2);
+
+INSERT INTO Message (contenu, fil_id, auteur_id) VALUES
+('Bonjour tout le monde !', 1, 1),
+('Salut, quelqu''un peut m''aider avec ce projet ?', 2, 2);
+
+INSERT INTO Abonnement (utilisateur_id, fil_id) VALUES
+(1, 1),
+(2, 1),
+(3, 2);
+
+-- Lister tous les utilisateurs
+
+-- SELECT * FROM Utilisateur;
+
+-- Lister tous les fils de discussion créés par un utilisateur donné
+
+-- SELECT * FROM FilDeDiscussion WHERE createur_id = 1;
+
+-- Lister tous les messages d'un fil de discussion donné
+
+-- SELECT * FROM Message WHERE fil_id = 1 ORDER BY date_publication;
+
+-- Lister tous les abonnés d'un fil de discussion donné
+
+-- SELECT u.* FROM Utilisateur u
+-- JOIN Abonnement a ON u.id = a.utilisateur_id
+-- WHERE a.fil_id = 1;
+
+-- Lister tous les fils de discussion auxquels un utilisateur est abonné
+
+-- SELECT f.* FROM FilDeDiscussion f
+-- JOIN Abonnement a ON f.id = a.fil_id
+-- WHERE a.utilisateur_id = 1;
+
+-- Lister les 5 derniers messages postés dans tous les fils de discussion
+
+-- SELECT * FROM Message ORDER BY date_publication DESC LIMIT 5;
+
+-- Lister les fils de discussion avec le nombre de messages
+
+-- SELECT f.id, f.nom, COUNT(m.id) AS nombre_messages
+-- FROM FilDeDiscussion f
+-- LEFT JOIN Message m ON f.id = m.fil_id
+-- GROUP BY f.id, f.nom;
+
+-- Lister les utilisateurs qui ne sont abonnés à aucun fil de discussion
+
+-- SELECT u.* FROM Utilisateur u
+-- LEFT JOIN Abonnement a ON u.id = a.utilisateur_id
+-- WHERE a.fil_id IS NULL;
+
+-- Lister les fils de discussion sans messages
+
+-- SELECT f.* FROM FilDeDiscussion f
+-- LEFT JOIN Message m ON f.id = m.fil_id
+-- WHERE m.id IS NULL;
+
+-- Lister les messages postés par un utilisateur donné
+
+-- SELECT * FROM Message WHERE auteur_id = 1 ORDER BY date_publication;
\ No newline at end of file