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package lab_jdbc;

/**
 *
 * @author student
 */

import java.sql.*;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Lab_JDBC {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws SQLException {
 //KONEKT
 Connection conn = null;
 Properties connectionProps = new Properties();
 connectionProps.put("user", "inf127273");
 connectionProps.put("password", "inf127273");
 try {
 conn = DriverManager.getConnection("jdbc:oracle:thin:@//admlab2.cs.put.poznan.pl:1521/"
         + "dblab02_students.cs.put.poznan.pl",connectionProps);
 System.out.println("Połączono z bazą danych");
 } catch (SQLException ex) {
 Logger.getLogger(Lab_JDBC.class.getName()).log(Level.SEVERE,
 "nie udało się połączyć z bazą danych", ex);
 System.exit(-1);
 }
 //DEKLARACJA STEJTMENT DO BAZY DANYCH
Statement stmt = null;
ResultSet rs = null; //RESULT wynik
try {
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
 ResultSet.CONCUR_READ_ONLY);
 rs = stmt.executeQuery("SELECT COUNT(nazwisko)  FROM pracownicy");
 while (rs.next()) {
 System.out.println(rs.getInt(1) + " " );
 }
} catch (SQLException ex) {
 System.out.println("Bład wykonania polecenia" + ex.toString());
}
rs.close();//zamknij cztytacz
rs = stmt.executeQuery("SELECT nazwisko,placa_pod  FROM pracownicy where etat = 'ASYSTENT'"
        + "order by placa_pod DESC");
while (rs.next()) {
 System.out.println(rs.getString(1) + " "+rs.getFloat(2));
 }
rs.last();
        for (int i = 0; i < 2; i++) {
         rs.previous();
        }
        System.out.println(rs.getString(1));
rs.close();

stmt.close(); //zamknij stejtment

//DISKONEKT
        try {
            conn.close();
        } catch (SQLException ex) {
            Logger.getLogger(Lab_JDBC.class.getName()).log(Level.SEVERE, null, ex);
        }
        System.out.println("DISKONEKT");
    }

}