class.ilLMTree.php

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<?php
 
/* Copyright (c) 1998-2014 ILIAS open source, Extended GPL, see docs/LICENSE */
 
class ilLMTree extends ilTree
{
        static $instances = array();
 
        private function __construct($a_tree_id)
        {
                parent::ilTree($a_tree_id);
                $this->setTableNames('lm_tree','lm_data');
                $this->setTreeTablePK("lm_id");
                $this->useCache(true);
        }
 
        static function getInstance($a_tree_id)
        {
                if (isset(self::$instances[$a_tree_id]))
                {
                        return self::$instances[$a_tree_id];
                }
                $tree = new ilLMTree($a_tree_id);
                self::$instances[$a_tree_id] = $tree;
 
                return $tree;
        }
 
 
        public function isCacheUsed()
        {
                return $this->use_cache;
        }
 
 
}
 
?>