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package main;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author FON
 */



public class Main {
    private static String url = "jdbc:oracle:thin:@localhost:1521:orcl";
    private static String username = "student";
    private static String password ="student";

    public static void main(String[] args) {
        System.out.println("Pre unosa: ");
        nadjiSvaOdeljenja();
        dodajOdeljenje(959, "LABIS", "Beograd");
        System.out.println("Posle unosa: ");
        nadjiSvaOdeljenja();
    }

    public static void nadjiSvaOdeljenja(){
        String query = "SELECT * FROM odeljenje";

        try (Connection connection = DriverManager.getConnection(url,username ,password );
            Statement stmt = connection.createStatement();
            ResultSet rs = stmt.executeQuery(query);) {

            while(rs.next()){
                int sifraOdeljenja = rs.getInt("sifraodelj");
                String nazivOdeljenja = rs.getString(2);
                String grad = rs.getString("grad");

                System.out.println("Sifra: " + sifraOdeljenja + ", Naziv: " + nazivOdeljenja + ", Grad: "+ grad);
            }
            //rs.close();
            //stmt.close();
            //connection.close();

        } catch (SQLException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public static void dodajOdeljenje(int sifraOdeljenja, String nazivOdeljenja, String grad){
        try {
            String query = "INSERT INTO odeljenje VALUES (?,?,?)";
            Connection connection = DriverManager.getConnection(url, username, password);
            connection.setAutoCommit(false);
            PreparedStatement ps = connection.prepareStatement(query);
            ps.setInt(1, sifraOdeljenja);
            ps.setString(2, nazivOdeljenja);
            ps.setString(3, grad);
            int number =  ps.executeUpdate();

            if(number == 1){
                connection.commit();
            }else{
                connection.rollback();
            }

            ps.close();
            connection.close();
        } catch (SQLException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}