CodeIgniter : core/ override, missing load/loader class - php

Question

Okay, i am having this issue and google is not helping and i think it is because my issue is too simple or something.
I'm trying to load whatever or connect with load->database(); but it aint working.
Here is my code with comments, it will explain everything.
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class CI_Lang {
function __construct() {
# Show all files included
print_r(get_included_files()); // There is nothing like loader or load .php
# Check for loader file
if( ! class_exists('loader') || ! class_exists('load')) {
echo 'no load '; // is being shown,
}
# Check Database connection before
if (isset($this->db->conn_id) && is_resource($this->db->conn_id)) {
echo 'database is loaded and conected ';
} else {
echo 'no connection '; // is being shown,
}
# Get Database connection
$this->load->library('database');
/*
Script dies on line above with error:
Fatal error: Call to a member function library() on a non-object in
application/core/Lang.php on line 38
*/
$this->load->database();
# Check Database connection after
if (isset($this->db->conn_id) && is_resource($this->db->conn_id)) {
echo 'database is loaded and conected ';
} else {
echo 'no connection ';
}
# Register as loaded
log_message('debug', 'JK_Lang Class initialized');
}
}
This script is named Lang.php and it is in application/core folder. It is supposed to override the main Lang class and it is. The problem is, it seems to be all alone. How can i include other methods here?
I already have modified autoload.php and set there:
$autoload['libraries'] = array(
# We need Loader
'loader',
# Connect with DB
'database',
# Session Start
'session'
);
And now i have ran out of ideas, any help please ?

Answer 1

The problem was, i had no codeigniter instance declared. So there were 2 methods to fix it.
First, i could make a function like:
function __construct() {
$this->run();
}
function run() {
/* All my __construct code here */
}
Or as i actually fixed my problem, i made a library and to get all things needed to work with codeigniter i made an instance:
class L {
var $CI;
function __construct() {
$this->CI =& get_instance();
$this->CI->load->database();
$this->test();
}
function test() {
$query = $this->CI->db->query("SELECT * FROM `stackoverflow.com`");
}
}