package persistentie;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import domein.Speler;
public class SpelerMapper {
    private List<Speler> spelers = new ArrayList<>();
    private List<Integer> scoreSpeler = new ArrayList<>();
    private static final String UPDATE_SCORE = "insert into ID343589_g52.scoreSpeler(spelerNr,score) values(?,?)";
    public SpelerMapper() {
        try (Connection conn = DriverManager.getConnection(Connectie.JDBC_URL);
                PreparedStatement query = conn.prepareStatement("SELECT * FROM ID343589_g52.speler");
                ResultSet rs = query.executeQuery()) {
            while (rs.next()) {
                String gebruikersnaam = rs.getString("gebruikersNaam");    
                String wachtwoord = rs.getString("wachtwoord");
                spelers.add(new Speler(gebruikersnaam, wachtwoord));
            }
        } catch (SQLException ex) {
            throw new RuntimeException(ex);
        }
    }
    public boolean correcteGegevens(Speler nieuweSpeler) {
            return spelers.contains(nieuweSpeler);
    }
    public List<Integer> geefscoreSpeler(String naam) {
        scoreSpeler.clear();
        try (Connection conn = DriverManager.getConnection(Connectie.JDBC_URL);
                PreparedStatement query = conn.prepareStatement(String.format("SELECT sc.score FROM ID343589_g52.scoreSpeler sc join speler s on s.spelernr = sc.spelerNr where s.gebruikersNaam = '%s'", naam));
                ResultSet rs = query.executeQuery()) {
            while (rs.next()) {
                int score  = rs.getInt("score");
                scoreSpeler.add(score);
            }
        } catch (SQLException ex) {
            throw new RuntimeException(ex);
        }
        return scoreSpeler;
    }
    public void slaScoreOp(int score, String naam) {
         try (Connection conn = DriverManager.getConnection(Connectie.JDBC_URL);
                 PreparedStatement query = conn.prepareStatement(String.format("SELECT sc.score FROM ID343589_g52.scoreSpeler sc join speler s on s.spelernr = sc.spelerNr where s.gebruikersNaam = '%s'", naam));
                 ResultSet rs = query.executeQuery()) {
             int id = 0;
             while (rs.next()) {
                 id  = rs.getInt("score");
             }
             PreparedStatement update = conn.prepareStatement(UPDATE_SCORE);
             update.setInt(1, id);
             update.setInt(2, score);
             update.executeUpdate();
         } catch (SQLException ex) {
             throw new RuntimeException(ex);
         }
    }
}

我在这里做的任何蠢事真的不是怎么回事吗？我真的是一个新的连接数据库与我的java项目？在methode geefscorespeler（）中，我要做的事情是获得一个i个人玩家的分数。在methode slascoreop（）中，我尝试在一个表中插入一个新列（还尝试通过一个innerjoins表获取用户名的id）