Essensbestellungsverwaltung/src/main/java/com/bib/essensbestellungsverwaltung/Database.java

package com.bib.essensbestellungsverwaltung;

import java.sql.*;

public class Database {
    private static final String dbLocation = "jdbc:sqlite:"+Database.class.getResource("database/database.db");
    protected static Connection connect(){
        Connection conn = null;
        try{
            conn = DriverManager.getConnection(dbLocation);
        }catch (SQLException e){
            e.printStackTrace();
        }
        return conn;
    }

    protected static void createDb(){
        String sql = """
                CREATE TABLE IF NOT EXISTS user (
                id integer PRIMARY KEY,
                name text);""";
        try(Connection conn = connect(); Statement stmt = conn.createStatement()){
            stmt.execute(sql);
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    protected static void fillSampleDb(){
        String sql = """
                INSERT INTO user (id,name)
                VALUES (1,'test1');""";
        try(Connection conn = connect(); Statement stmt = conn.createStatement()){
            stmt.execute(sql);
        }catch (SQLException e){
            e.printStackTrace();
        }
    }

    protected static void printSampleQuery(){
        String sql = """
                SELECT * FROM user WHERE id > ?;""";
        try(Connection conn = connect()){
            PreparedStatement pstmt = conn.prepareStatement(sql);
            pstmt.setInt(1,0);
            ResultSet rs = pstmt.executeQuery();
            while (rs.next()){
                System.out.println(rs.getInt("id"));
                System.out.println(rs.getString("name"));
            }
        }catch (SQLException e){
            e.printStackTrace();
        }
    }

    protected static void deleteSample(){
        String sql = """
                DELETE FROM user WHERE id = ?;""";
        try(Connection conn = connect();PreparedStatement pstmt = conn.prepareStatement(sql)){
            pstmt.setInt(1,1);
            pstmt.executeUpdate();
        }catch (SQLException e){
            e.printStackTrace();
        }
    }

    /*        String sql = """
                CREATE TABLE IF NOT EXISTS user (
                id integer PRIMARY KEY,
                name text);""";
        String sql2 = "SELECT * FROM user WHERE id > ?";
        String sql3 = "INSERT INTO user (id,name) VALUES (1,'test1')";
        try(Connection conn = connect();
            Statement stmt = conn.createStatement()){
            stmt.execute(sql);
            stmt.execute(sql3);
            PreparedStatement pstmt = conn.prepareStatement(sql2);
            pstmt.setInt(1,0);
            ResultSet rs = pstmt.executeQuery();
            while (rs.next()){
                System.out.println(rs.getInt("id"));
            }
        }catch (SQLException e){
            e.printStackTrace();
            return;
        }   */
}