package database;

import java.sql.DriverManager;
import java.sql.ResultSet;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CustomQuery {
	static Connection conn = null;
	static Statement stmt = null;
	static ResultSet rs = null;

	public void getStringFromDatabase(){}
	public void getIntFromDatabase(){}


	public static void pendQuery(HttpServletRequest request, HttpServletResponse response) throws IOException{
		PrintWriter out = response.getWriter();
		try {
			Class.forName("com.mysql.jdbc.Driver").newInstance();
			String connectionUrl = "jdbc:mysql://localhost:3306/sys";
			String connectionUser = "root";
			String connectionPassword = "admin";
			conn = DriverManager.getConnection(connectionUrl, connectionUser, connectionPassword);
			stmt = conn.createStatement();
			rs = stmt.executeQuery("SELECT * FROM testowa");
			while (rs.next()) {
				int id = rs.getInt("idTestowa");
				String nazwa = rs.getString("nazwa");
				out.println("ID: " + id + ", Nazwa: " + nazwa);
			}
		} catch (Exception e) { e.printStackTrace(out);}
		finally {
			try { if (rs != null) rs.close(); } catch (SQLException e) { e.printStackTrace(); }
			try { if (stmt != null) stmt.close(); } catch (SQLException e) { e.printStackTrace(); }
			try { if (conn != null) conn.close(); } catch (SQLException e) { e.printStackTrace(); }
		}
		conn = null;
		stmt = null;
		rs = null;
	}
}