package MySQL;

import java.sql.*;

public class MySQLConnect
{
    public static String HOST = "";
    public static String DATABASE = "";
    public static String USER = "";
    public static String PASSWORD = "";
    private Connection con;

    public MySQLConnect(String host, String database, String user, String password)
    {
        HOST = host;
        DATABASE = database;
        USER = user;
        PASSWORD = password;

        connect();
    }

    public void connect()
    {
        try
        {
            this.con = DriverManager.getConnection("jdbc:mysql://" + HOST + ":3306/" + DATABASE + "?autoReconnect=true", USER, PASSWORD);
            //Erfolgreich
        }
        catch (SQLException e)
        {
            //Verbindung fehlgeschlagen
        }
    }

    public void close()
    {
        try
        {
            if (this.con != null) {
                this.con.close();
            }
        }
        catch (SQLException localSQLException) {}
    }

    public void update(String qry)
    {
        try
        {
            Statement st = this.con.createStatement();
            st.executeUpdate(qry);
            st.close();
        }
        catch (SQLException e)
        {
            connect();
            System.err.println(e);
        }
    }

    public ResultSet query(String qry)
    {
        ResultSet rs = null;
        try
        {
            Statement st = this.con.createStatement();
            rs = st.executeQuery(qry);
        }
        catch (SQLException e)
        {
            connect();
            System.err.println(e);
        }
        return rs;
    }
}