<?php
/*************************************************************************************/
/*                                                                                   */
/*      Thelia	                                                                     */
/*                                                                                   */
/*      Copyright (c) OpenStudio                                                     */
/*		email : info@thelia.net                                                      */
/*      web : http://www.thelia.net                                                  */
/*                                                                                   */
/*      This program is free software; you can redistribute it and/or modify         */
/*      it under the terms of the GNU General Public License as published by         */
/*      the Free Software Foundation; either version 3 of the License                */
/*                                                                                   */
/*      This program is distributed in the hope that it will be useful,              */
/*      but WITHOUT ANY WARRANTY; without even the implied warranty of               */
/*      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                */
/*      GNU General Public License for more details.                                 */
/*                                                                                   */
/*      You should have received a copy of the GNU General Public License            */
/*	    along with this program. If not, see <http://www.gnu.org/licenses/>.         */
/*                                                                                   */
/*************************************************************************************/
require_once __DIR__ . "/../fonctions/autoload.php";

class Variable extends Baseobj {

	var $id;
	var $nom;
	var $valeur;
 	var $protege;
 	var $cache;

	const TABLE="variable";
	var $table=self::TABLE;

	var $bddvars=array("id", "nom", "valeur", "protege", "cache");

	function __construct($nom = ""){

		parent::__construct();

		if($nom != "")
			$this->charger($nom);
	}

	function charger($nom){
		return $this->getVars("select * from $this->table where nom=\"$nom\"");
	}

	function charger_id($id){
		return $this->getVars("select * from $this->table where id=\"$id\"");
	}

	/*
	 * Pour obtenir la valeur d'une variable en un seul appel: Variable::lire("nomvariable")
	*/
	static $_cache = array();
	public static function lire($nom, $defaut = "") {

		if (! isset(self::$_cache[$nom])) {
			$var = new Variable($nom);

			self::$_cache[$nom] = empty($var->id) ? $defaut : $var->valeur;
		}

		return self::$_cache[$nom];
	}

	public function add() {
		unset(self::$_cache[$this->nom]);

		return parent::add();

	}

	public function maj() {
		unset(self::$_cache[$this->nom]);

		return parent::maj();

	}

	public function delete() {
		unset(self::$_cache[$this->nom]);

		parent::delete();

	}

	/*
	 * Pour mettre a jour la valeur d'une variable en un seul appel: Variable::ecrire("nomvariable", valeur)
	 */
	public static function ecrire($nom, $valeur, $creer_si_inexistante = false, $protege = 1, $cache = 1) {

		$var = new Variable($nom);

		if ($creer_si_inexistante && ! $var->charger($nom)) {

			$var->nom = $nom;
			$var->valeur = $valeur;
			$var->protege = $protege;
			$var->cache = $cache;

			$var->add();
		}
		else {
			$var->valeur = $valeur;

			$var->maj();
		}
	}
}
?>