class.ilSessionIStorage.php

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<?php

/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilSessionIStorage
{
        protected $session_id = "";
        protected $component_id = "";
        static protected $values = array();
        
        function __construct($a_component_id, $a_sess_id = "")
        {
                $this->component_id = $a_component_id;
                if ($a_sess_id != "")
                {
                        $this->session_id = $a_sess_id;
                }
                else
                {
                        $this->session_id = session_id();
                }
        }
        
        function set($a_key, $a_val)
        {
                global $ilDB;
                
                if (!is_array(self::$values[$this->component_id]))
                {
                        self::$values[$this->component_id] = array();
                }
                self::$values[$this->component_id][$a_key] = $a_val;
                $ilDB->replace("usr_sess_istorage",
                        array(
                                "session_id" => array("text", $this->session_id),
                                "component_id" => array("text", $this->component_id),
                                "vkey" => array("text", $a_key)
                                ),
                        array("value" => array("text", $a_val))
                        );
        }
        
        function get($a_key)
        {
                global $ilDB;
                
                if (is_array(self::$values[$this->component_id]) &&
                        isset(self::$values[$this->component_id][$a_key]))
                {
                        return self::$values[$this->component_id][$a_key];
                }
                
                $set = $ilDB->query("SELECT value FROM usr_sess_istorage ".
                        " WHERE session_id = ".$ilDB->quote($this->session_id, "text").
                        " AND component_id = ".$ilDB->quote($this->component_id, "text").
                        " AND vkey = ".$ilDB->quote($a_key, "text")
                        );
                $rec = $ilDB->fetchAssoc($set);
                self::$values[$this->component_id][$a_key] = $rec["value"];

                return $rec["value"];
        }
        
        function destroySession($a_session_id)
        {
                global $ilDB;
                
                if(!is_array($a_session_id))
                {
                        $q = "DELETE FROM usr_sess_istorage WHERE session_id = ".
                                $ilDB->quote($a_session_id, "text");                    
                }
                else
                {
                        $q = "DELETE FROM usr_sess_istorage WHERE ".
                                $ilDB->in("session_id", $a_session_id, "", "text");
                }

                $ilDB->manipulate($q);
        }
        
}

?>