<?php

	/**
	 * NRE
	 *
	 * @author	coderkun <olli@coderkun.de>
	 * @copyright	2013 coderkun (http://www.coderkun.de)
	 * @license	http://www.gnu.org/licenses/gpl.html
	 * @link	http://www.coderkun.de/projects/nre
	 */
	
	namespace nre\models;
	
	
	/**
	 * Default implementation of a database model.
	 * 
	 * @author	coderkun <olli@coderkun.de>
	 */
	class DatabaseModel extends \nre\core\Model
	{
		/**
		 * Database connection
		 * 
		 * @static
		 * @var DatabaseDriver
		 */
		protected $db = NULL;
		
		
		
		
		/**
		 * Construct a new datamase model.
		 * 
		 * @throws	DatamodelException
		 * @throws	DriverNotFoundException
		 * @throws	DriverNotValidException
		 * @param	string	$type	Database type
		 * @param	array	$config	Connection settings
		 */
		function __construct($type, $config)
		{
			parent::__construct();
			
			// Load database driver
			$this->loadDriver($type);
			
			// Establish database connection
			$this->connect($type, $config);
		}
		
		
		
		
		/**
		 * Load the database driver.
		 * 
		 * @throws	DriverNotFoundException
		 * @throws	DriverNotValidException
		 * @param	string	$driverName	Name of the database driver
		 */
		private function loadDriver($driverName)
		{
			\nre\core\Driver::load($driverName);
		}
		
		
		/**
		 * Establish a connection to the database.
		 * 
		 * @throws	DatamodelException
		 * @param	string	$driverName	Name of the database driver
		 * @param	array	$config		Connection settings
		 */
		private function connect($driverName, $config)
		{
			$this->db = \nre\core\Driver::factory($driverName, $config);
		}
		
	}

?>