class.ilSearchFolder.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | 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 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | 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, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

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


class ilSearchFolder
{
        // OBJECT VARIABLES
        var $s_tree;
        var $ilias;

        var $user_id;
        var $root_id;
        var $folder_id;
        var $parent_id;
        var $title;

        function ilSearchFolder($a_user_id,$a_folder_id = 0)
        {
                global $ilias;

                define("TABLE_SEARCH_TREE","search_tree");
                define("TABLE_SEARCH_DATA","search_data");

                $this->ilias =& $ilias;

                $this->user_id = $a_user_id;
                
                $this->__readRootId();

                // IF NO FOLDER ID IS GIVEN DEFAULT TO ROOT ID
                $this->setFolderId($a_folder_id ? $a_folder_id : $this->getRootId());

                $this->__initTreeObject();

                if(!$this->__treeExists())
                {
                        $this->__createNewTree();
                }
                $this->__init();

                // CHECK USER TREE IF HAS BEEN CREATED
        }

        // SET/GET
        function getType()
        {
                return "seaf";
        }
        
        function getRootId()
        {
                return $this->root_id;
        }
        function setRootId($a_root_id)
        {
                $this->root_id = $a_root_id;
        }
        function setFolderId($a_folder_id)
        {
                $this->folder_id = $a_folder_id;
        }
        function getFolderId()
        {
                return $this->folder_id;
        }
        function setUserId($a_user_id)
        {
                $this->user_id = $a_user_id;
                
        }
        function getUserId()
        {
                return $this->user_id;
        }
        function setTitle($a_title)
        {
                $this->title = $a_title;
        }
        function getTitle()
        {
                return $this->title;
        }

        function getChilds()
        {
                return $this->s_tree->getChilds($this->getFolderId(),"type","DESC");
        }
        function hasSubfolders()
        {
                $childs = $this->getChilds();

                return $childs[0]["type"] == "seaf" ? true : false;
        }
        function hasResults()
        {
                $childs = $this->getChilds();

                return $childs[count($childs)-1]["type"] == "sea" ? true : false;
        }
        function countFolders()
        {
                $childs = $this->s_tree->getChilds($this->getRootId(),"type","DESC");

                $counter = 0;
                while(true)
                {
                        if($childs[$counter]["type"] != "seaf")
                        {
                                break;
                        }
                        ++$counter;
                }
                return $counter;
        }

        function getPath()
        {
                return $this->s_tree->getPathFull($this->getFolderId(),$this->getRootId());
        }

        function setParentId($a_parent_id)
        {
                $this->parent_id = $a_parent_id;
        }
        
        function getParentId()
        {
                return $this->parent_id;
        }

        function delete($a_folder_id)
        {
                $subtree = $this->s_tree->getSubTree($this->s_tree->getNodeData($a_folder_id));
                
                foreach($subtree as $node)
                {
                        // DELETE DATA ENTRIES
                        $query = "DELETE FROM ".TABLE_SEARCH_DATA." ".
                                "WHERE user_id = '".$this->getUserId()."' ".
                                "AND obj_id = '".$node["obj_id"]."'";

                        $res = $this->ilias->db->query($query);
                }
                // FINALLY DELETE SUBTREE
                $this->s_tree->deleteTree($this->s_tree->getNodeData($a_folder_id));

                return true;
        }
        
        function assignResult(&$search_result)
        {
                if(!$this->__treeExists())
                {
                        $this->__createNewTree();
                }
                // CREATE RESULT
                $query = "INSERT INTO ".TABLE_SEARCH_DATA ." ".
                        "SET user_id = '".$this->getUserId()."', ".
                        "title = '".$search_result->getTitle()."', ".
                        "target = '".$search_result->getTarget()."', ".
                        "type = 'sea'";
                
                $res = $this->ilias->db->query($query);

                $this->s_tree->insertNode($this->ilias->db->getLastInsertId(),$this->getFolderId());

                return true;
        }

        function updateTitle($a_title)
        {
                $query = "UPDATE ".TABLE_SEARCH_DATA." ".
                        "SET title = '".addslashes($a_title)."' ".
                        "WHERE obj_id = '".$this->getFolderId()."' ".
                        "AND user_id = '".$this->getUserId()."'";

                $res = $this->ilias->db->query($query);

                return true;
        }

        function &create($a_title)
        {
                // CREATE FOLDER
                $query = "INSERT INTO ".TABLE_SEARCH_DATA ." ".
                        "SET user_id = '".$this->getUserId()."', ".
                        "title = '".addslashes($a_title)."', ".
                        "type = 'seaf'";
                
                $res = $this->ilias->db->query($query);

                $this->s_tree->insertNode($this->ilias->db->getLastInsertId(),$this->getFolderId());

                $new_obj =& new ilSearchFolder($this->getUserId(),$this->getFolderId());
                $new_obj->setTitle($a_title);

                return $new_obj;
        }
        function getTree()
        {
                $tmp_folder_id = $this->getFolderId();

                $this->setFolderId($this->getRootId());
                
                $tree_data = $this->getSubtree();
                $this->setFolderId($tmp_folder_id);

                return $tree_data;
        }

        function getSubtree()
        {
                $subtree = $this->s_tree->getSubtree($this->s_tree->getNodeData($this->getFolderId()));

                // FILTER FOLDERS
                foreach($subtree as $node)
                {
                        if($node["type"] == "seaf")
                        {
                                $filtered[] = $node;
                        }
                }
                return count($filtered) ? $filtered : array();
        }
        // PRIVATE METHODS
        function __init()
        {
                $query = "SELECT * FROM ".TABLE_SEARCH_TREE.", ".TABLE_SEARCH_DATA." ".
                        "WHERE child = obj_id ".
                        "AND child = '".$this->getFolderId()."' ".
                        "AND tree = '".$this->getUserId()."'";

                $res = $this->ilias->db->query($query);

                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->setTitle($row->title);
                        $this->setParentId($row->parent);
                }
        }

        function  __initTreeObject()
        {
                $this->s_tree = new ilTree($this->getUserId(),$this->getRootId());
                $this->s_tree->setTableNames(TABLE_SEARCH_TREE,TABLE_SEARCH_DATA);

                return true;
        }

        function __treeExists()
        {
                $query = "SELECT tree FROM ".TABLE_SEARCH_TREE." ".
                        "WHERE tree = ".$this->getUserId();
                
                $res = $this->ilias->db->query($query);

                return $res->numRows() ? true : false;
        }

        function __createNewTree()
        {
                // ADD ENTRY search_data
                $query = "INSERT INTO ".TABLE_SEARCH_DATA." ".
                        "SET user_id = '".$this->getUserId()."', ".
                        "type = 'seaf'";
                
                $res = $this->ilias->db->query($query);
                $root_id = $this->__getLastInsertId();

                $this->s_tree->addTree($this->getUserId(),$root_id);

                // SET MEMBER VARIABLES
                $this->setFolderId($root_id);
                $this->setRootId($root_id);

                return true;
        }

        function __readRootId()
        {
                $query = "SELECT child FROM ".TABLE_SEARCH_TREE." ".
                        "WHERE tree = '".$this->getUserId()."' ".
                        "AND parent = '0'";

                $res = $this->ilias->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->setRootId($row->child);
                }
                return true;
        }

        function __getLastInsertId()
        {
                return $this->ilias->db->getLastInsertId();
        }

} // END class.Search
?>