package application;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class ConnectDB {

	static ResultSet rs = null;
	String query;
	static Connection con = null;
	static Statement stmt = null;
	static String user = "SYSTEM";
	static String password = "system";
	static String url = "jdbc:oracle:thin:@localhost:1521/xe";

	public static void ConnectToDB() {

		try {
			Class.forName("oracle.jdbc.driver.OracleDriver");
			DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());

			con = DriverManager.getConnection(url,user,password);

			stmt = con.createStatement();

		} catch (ClassNotFoundException e) {
		// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
		// TODO Auto-generated catch block
			e.printStackTrace();
		}/*finally {
			try {

			rs.close();
			stmt.close();
			con.close();
		}catch(SQLException e) {
			e.printStackTrace();
		}*/

	}

		public static ResultSet ReadFromDB(String query) {

			try {

				rs = stmt.executeQuery(query);
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			/*try {if (rs!=null)
				while(rs.next()) {
					System.out.println("Etudiant id : " + rs.getInt(1) + "\t" + " - Nom : " + rs.getString(2) + " - prénom : " + rs.getString(3));
				}
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}*/
			return rs;
		}

		public static void CloseConnectionDB() {

			try {

				rs.close();
				stmt.close();
				con.close();
			}catch(SQLException e) {
				e.printStackTrace();
			}
		}

		public static void UpdateDB(String query) {



		}
}