/*
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 */

package DBLayer;

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;

/**
 *
 * @author Kasper
 */
public class DBConnection {

    //constans used to get access to the database
    //SQL Server
    private static final String  driver = "jdbc:odbc:";
    //MySql
    //private static final String  driver = "jdbc:mysql://localhost:3306/";
    private static final String  databaseName = "Westernstyle";
    //SQL Server
    private static final String  userName = "";
    private static final String password = "";
    //MySql password and username
    //private static final String  userName = "root";
    //private static final String password = "fisk";
    private DatabaseMetaData dma;
    private static Connection con;
    // an instance of the class is generetated
    private static DBConnection  instance = null;

    // the constructor is private to ensure that only one object of this class is createt
    private DBConnection()
    {
        String url = driver + databaseName;
        try{
            //load af driver
            //SQL Server
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            // mySQL
            //  Class.forName("org.gjt.mm.mysql.Driver");
        }
        catch(Exception e){
            System.out.println("Can not find the driver");
            System.out.println(e.getMessage());
        }//end catch
        try{
            //connection to the database
            con = DriverManager.getConnection(url, userName,password);
            //set autocommit
            con.setAutoCommit(true);
            dma = con.getMetaData(); // get meta data
            System.out.println("Connection to " + dma.getURL());
            System.out.println("Driver " + dma.getDriverName());
            System.out.println("Database product name " + dma.getDatabaseProductName());
        }//end try
        catch(Exception e){
            System.out.println("Problems with the connection to the database");
            System.out.println(e.getMessage());
        }//end catch
    }//end  constructor

  //closeDb: closes the connection to the database
    public static void closeConnection()
    {
        try{
            con.close();
            System.out.println("The connection is closed");
        }
         catch (Exception e){
            System.out.println("Error trying to close the database " +  e.getMessage());
         }
    }//end closeDB

    //getDBcon: Get-metode, returnerer forbindelsen til databasen
    public  Connection getDBcon()
    {
       return con;
    }
    //this method is used to get the instance of the connection
    public static DBConnection getInstance()
    {
        if (instance == null)
        {
          instance = new DBConnection();
        }
        return instance;
    }

}//end DbConnection