class.ilWorkspaceTree.php

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<?php

/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once "Services/Tree/classes/class.ilTree.php";

class ilWorkspaceTree extends ilTree
{
        public function __construct($a_tree_id, $a_root_id = 0)
        {
                parent::__construct($a_tree_id, $a_root_id);

                $this->table_tree = 'tree_workspace';
                $this->table_obj_data = 'object_data';
                $this->table_obj_reference = 'object_reference_ws';
                $this->ref_pk = 'wsp_id';
                $this->obj_pk = 'obj_id';
                $this->tree_pk = 'tree';

                // ilTree sets it to ROOT_FOLDER_ID if not given...
                if(!$a_root_id)
                {
                        $this->root_id = $this->readRootId();
                }
        }

        public function createReference($a_object_id)
        {
                global $ilDB;
                
                $next_id = $ilDB->nextId($this->table_obj_reference);

                $fields = array($this->ref_pk => array("integer", $next_id),
                        $this->obj_pk => array("integer", $a_object_id));

                $ilDB->insert($this->table_obj_reference, $fields);
                
                return $next_id;
        }

        public function lookupObjectId($a_node_id)
        {
                global $ilDB;

                $set = $ilDB->query("SELECT ".$this->obj_pk.
                        " FROM ".$this->table_obj_reference.
                        " WHERE ".$this->ref_pk." = ".$ilDB->quote($a_node_id, "integer"));
                $res = $ilDB->fetchAssoc($set);

                return $res[$this->obj_pk];
        }
        
        
        public function lookupNodeId($a_obj_id)
        {
                global $ilDB;
                
                $set = $ilDB->query("SELECT ".$this->ref_pk.
                        " FROM ".$this->table_obj_reference.
                        " WHERE ".$this->obj_pk." = ".$ilDB->quote($a_obj_id, "integer"));
                $res = $ilDB->fetchAssoc($set);

                return $res[$this->ref_pk];
        }
        
        public function lookupOwner($a_node_id)
        {
                global $ilDB;

                $set = $ilDB->query("SELECT tree".
                        " FROM ".$this->table_obj_reference.
                        " JOIN ".$this->table_tree." ON (".$this->table_obj_reference.".".$this->ref_pk." = ".$this->table_tree.".child)".
                        " WHERE ".$this->ref_pk." = ".$ilDB->quote($a_node_id, "integer"));
                $res = $ilDB->fetchAssoc($set);

                return $res["tree"];
        }

        public function insertObject($a_parent_node_id, $a_object_id)
        {
                $node_id = $this->createReference($a_object_id);
                $this->insertNode($node_id, $a_parent_node_id);
                return $node_id;
        }

        public function deleteReference($a_node_id)
        {
                global $ilDB;

                $query = "DELETE FROM ".$this->table_obj_reference.
                        " WHERE ".$this->ref_pk." = ".$ilDB->quote($a_node_id, "integer");
                return $ilDB->manipulate($query);
        }
                
        public function cascadingDelete()
        {               
                $root_id = $this->readRootId();         
                if(!$root_id)
                {
                        return;
                }
                
                $root = $this->getNodeData($root_id);
                
                include_once "Services/PersonalWorkspace/classes/class.ilWorkspaceAccessHandler.php";
                $access_handler = new ilWorkspaceAccessHandler($this);
                
                // delete node data
                $nodes = $this->getSubTree($root);
                foreach($nodes as $node)
                {                       
                        $access_handler->removePermission($node["wsp_id"]);

                        $object = ilObjectFactory::getInstanceByObjId($node["obj_id"], false);
                        if($object)
                        {
                                $object->delete();
                        }
                
                        $this->deleteReference($node["wsp_id"]);                                         
                }
                
            $this->deleteTree($root);
        }
        
        public function getObjectsFromType($a_type)
        {
                return $this->getSubTree(
                        $this->getNodeData($this->getRootId()), 
                        false, $a_type);                
        }
        
        public function createTreeForUser($a_user_id)
        {
                $root = ilObjectFactory::getClassByType("wsrt");
                $root = new $root(null);
                $root->create();

                $root_id = $this->createReference($root->getId());
                $this->addTree($a_user_id, $root_id);
                $this->setRootId($root_id);
        }
}

?>