public ProductRepositorySql() {
		Properties properties = new Properties();
		String url = "jdbc:postgresql://gegevensbanken.khleuven.be:51516/2TX33";
		properties.setProperty("user", "r0623506");
																						properties.setProperty("password", "");
		properties.setProperty("ssl", "true");
		properties.setProperty("sslfactory", "org.postgresql.ssl.NonValidatingFactory");
		Connection connection;
		try {
			Class.forName("org.postgresql.Driver");
			connection = DriverManager.getConnection(url, properties);
			statement = connection.createStatement();
		} catch (SQLException e) {
			throw new DbException(e.getMessage(), e);
		} catch (ClassNotFoundException e) {
			throw new DbException(e.getMessage(), e);
		}
	}