completed

Database-Workshop/build.gradle

@@ -12,6 +12,7 @@ repositories {
 dependencies {
     testImplementation platform('org.junit:junit-bom:5.10.0')
     testImplementation 'org.junit.jupiter:junit-jupiter'
+    implementation 'org.postgresql:postgresql:42.7.5'
 }
 
 test {

Database-Workshop/src/main/java/org/project/DatabaseManager.java

@@ -1,17 +1,15 @@
 package org.project;
 
+import org.project.Models.Club;
 import org.project.Models.Player;
 
-import java.sql.Connection;
-import java.sql.DriverManager;
-import java.sql.PreparedStatement;
-import java.sql.SQLException;
+import java.sql.*;
+import java.util.UUID;
 
 public class DatabaseManager {
-    // todo: modify these constants to connect to database
     private static final String JDBC_URL = "jdbc:postgresql://localhost:5432/workshop";
     private static final String USERNAME = "postgres";
-    private static final String PASSWORD = "password";
+    private static final String PASSWORD = "D29011385m";
 
     // a method to connect to database with credentials given
     private static Connection connect() throws SQLException {
@@ -20,14 +18,111 @@ private static Connection connect() throws SQLException {
 
     public static void createPlayer(Player player) throws SQLException {
         Connection conn = connect();
-        // todo: fill the query to create a player
-        String query = "";
+        String query = "INSERT INTO player (id, name, club) VALUES (?, ?, ?)" ;
+
+        PreparedStatement ps = conn.prepareStatement(query);
+        ps.setObject(1,player.getId());
+        ps.setString(2,player.getFullName());
+        ps.setObject(3,player.getClubId());
+
+
+        ps.executeUpdate();
+        ps.close();
+        conn.close();
+    }
+
+    public static void createClub(Club club) throws SQLException {
+        Connection conn = connect();
+        String query = "INSERT INTO club (id, title, manager) VALUES (?, ?, ?)" ;
+
+        PreparedStatement ps = conn.prepareStatement(query);
+        ps.setObject(1,club.getId());
+        ps.setString(2,club.getTitle());
+        ps.setString(3, club.getManager());
+
+        ps.executeUpdate();
+        ps.close();
+        conn.close();
+    }
+
+    public static void updatePlayer(Player player, String name, UUID club) throws SQLException {
+        Connection conn = connect();
+        String query = "UPDATE player SET name = ?, club = ? WHERE id = ?";
+
+        PreparedStatement ps = conn.prepareStatement(query);
+        ps.setString(1,name);
+        ps.setObject(2,club);
+        ps.setObject(3,player.getId());
+        ps.executeUpdate();
+        ps.close();
+        conn.close();
+
+    }
+
+    public static void updateClub(Club club,String title,String manager) throws SQLException {
+        Connection conn = connect();
+        String query = "UPDATE club SET title = ?, manager = ? WHERE id = ?";
+
+        PreparedStatement ps = conn.prepareStatement(query);
+        ps.setString(1,title);
+        ps.setString(2,manager);
+        ps.setObject(3,club.getId());
+        ps.executeUpdate();
+        ps.close();
+        conn.close();
+    }
+
+    public static void selectPlayer(Player player) throws SQLException {
+        Connection conn = connect();
+        String query = "SELECT * FROM player WHERE id = ?";
+        PreparedStatement ps = conn.prepareStatement(query);
+        ps.setObject(1,player.getId());
+        ResultSet rs = ps.executeQuery();
+        rs.next();
+        UUID playerId = UUID.fromString(rs.getString(1));
+        String name = rs.getString(2);
+        UUID clubId = UUID.fromString(rs.getString(3));
+        String query2 = "SELECT * FROM club WHERE id = ?";
+        PreparedStatement ps2 = conn.prepareStatement(query2);
+        ps2.setObject(1,clubId);
+        ResultSet rs2 = ps2.executeQuery();
+        rs2.next();
+        String clubTitle = rs2.getString(2);
+
+        System.out.println(playerId + "-" + name + "-" + clubTitle);
+    }
+
+    public static void selectClub(Club club) throws SQLException {
+        Connection conn = connect();
+        String query = "SELECT * FROM club WHERE id = ?";
+        PreparedStatement ps = conn.prepareStatement(query);
+        ps.setObject(1,club.getId());
+        ResultSet rs = ps.executeQuery();
+        rs.next();
+        UUID clubId = UUID.fromString(rs.getString(1));
+        String name = rs.getString(2);
+        String manager = rs.getString(3);
+        System.out.println(clubId + "-" + name + "-" + manager);
+    }
+
+    public static void deletePlayer(Player player) throws SQLException {
+        Connection conn = connect();
+        String query = "DELETE FROM player WHERE id = ?";
+        PreparedStatement ps = conn.prepareStatement(query);
+        ps.setObject(1,player.getId());
+        ps.executeUpdate();
+        ps.close();
+        conn.close();
+    }
+
+    public static void deleteClub(Club club) throws SQLException {
+        Connection conn = connect();
+        String query = "DELETE FROM club WHERE id = ?";
         PreparedStatement ps = conn.prepareStatement(query);
-        // todo: set values of the prepared statement
+        ps.setObject(1,club.getId());
         ps.executeUpdate();
         ps.close();
         conn.close();
     }
 
-    // todo: create methods to complete the task of workshop
 }

Database-Workshop/src/main/java/org/project/Main.java

@@ -3,10 +3,12 @@
 import org.project.Models.Club;
 import org.project.Models.Player;
 
+import javax.xml.crypto.Data;
+import java.sql.SQLException;
 import java.util.UUID;
 
 public class Main {
-    public static void main(String[] args) {
+    public static void main(String[] args)  {
         // club instances
         Club club1 = new Club(UUID.randomUUID(), "Real Madrid", "Carlo Ancelotti");
         Club club2 = new Club(UUID.randomUUID(), "Liverpool", "Arne Slot");
@@ -15,7 +17,49 @@ public static void main(String[] args) {
         Player player2 = new Player(UUID.randomUUID(), "Jude Bellingham", club1.getId());
         Player player3 = new Player(UUID.randomUUID(), "Trent Alexander-Arnold", club2.getId());
         Player player4 = new Player(UUID.randomUUID(), "Federico Valverde", club1.getId());
+        try {
+            DatabaseManager.createClub(club1);
+            DatabaseManager.createClub(club2);
+            DatabaseManager.createPlayer(player1);
+            DatabaseManager.createPlayer(player2);
+            DatabaseManager.createPlayer(player3);
+            DatabaseManager.createPlayer(player4);
+
+            DatabaseManager.selectClub(club1);
+            DatabaseManager.selectClub(club2);
+            DatabaseManager.selectPlayer(player1);
+            DatabaseManager.selectPlayer(player2);
+            DatabaseManager.selectPlayer(player3);
+            DatabaseManager.selectPlayer(player4);
+
+            System.out.println("---------------------------");
+
+            DatabaseManager.updateClub(club1, "Real Madrid", "Alonso");
+            DatabaseManager.updatePlayer(player3, player3.getFullName(), club1.getId());
+
+
+            DatabaseManager.selectClub(club1);
+            DatabaseManager.selectClub(club2);
+            DatabaseManager.selectPlayer(player1);
+            DatabaseManager.selectPlayer(player2);
+            DatabaseManager.selectPlayer(player3);
+            DatabaseManager.selectPlayer(player4);
+
+            System.out.println("---------------------------");
+
+
+            DatabaseManager.deletePlayer(player2);
+            DatabaseManager.deleteClub(club2);
+
+            DatabaseManager.selectClub(club1);
+            DatabaseManager.selectPlayer(player1);
+            DatabaseManager.selectPlayer(player3);
+            DatabaseManager.selectPlayer(player4);
+
+            System.out.println("---------------------------");
+        }catch (Exception e) {
+            System.out.println(e);
+        }
 
-        // todo: call methods to run queries
     }
 }