Services/Tracking/classes/class.ilLPCollections.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. |
        +-----------------------------------------------------------------------------+
*/

class ilLPCollections
{
        var $db = null;

        var $obj_id = null;
        var $items = array();

        function ilLPCollections($a_obj_id)
        {
                global $ilObjDataCache,$ilDB;

                $this->db =& $ilDB;

                $this->obj_id = $a_obj_id;

                $this->__read();
        }

        function getObjId()
        {
                return (int) $this->obj_id;
        }

        function getItems()
        {
                return $this->items;
        }

        function isAssigned($a_ref_id)
        {
                return (bool) in_array($a_ref_id,$this->items);
        }

        function add($item_id)
        {
                $query = "DELETE FROM ut_lp_collections ".
                        "WHERE obj_id = '".$this->obj_id."' ".
                        "AND item_id = '".(int) $item_id."'";
                $this->db->query($query);
                
                $query = "REPLACE INTO ut_lp_collections ".
                        "SET obj_id = '".$this->obj_id."', ".
                        "item_id = '".(int) $item_id."'";
                $this->db->query($query);
                $this->__read();

                return true;
        }

        function delete($item_id)
        {
                $query = "DELETE FROM ut_lp_collections ".
                        "WHERE item_id = '".$item_id."' ".
                        "AND obj_id = '".$this->obj_id."'";
                $this->db->query($query);

                $this->__read();

                return true;
        }


        // Static
        function _getPossibleItems($a_target_id)
        {
                global $tree;

                if($tree->isDeleted($a_target_id))
                {
                        return array();
                }

                $node_data = $tree->getNodeData($a_target_id);
                foreach($tree->getSubTree($node_data) as $node)
                {
                        // avoid recursion
                        if($node['ref_id'] == $a_target_id)
                        {
                                continue;
                        }

                        switch($node['type'])
                        {
                                case 'exc':
                                case 'fold':
                                case 'grp':
                                case 'sahs':
                                case 'lm':
                                case 'tst':
                                case 'htlm':
                                        $all_possible[] = $node['ref_id'];
                                        break;
                        }
                }

                return $all_possible ? $all_possible : array();
        }

        function _getCountPossibleItems($a_target_id)
        {
                return count(ilLPCollections::_getPossibleItems($a_target_id));
        }

        function _getCountPossibleSAHSItems($a_target_id)
        {
                return count(ilLPCollections::_getPossibleSAHSItems($a_target_id));
        }


        function _getPossibleSAHSItems($target_id)
        {
                include_once './content/classes/class.ilObjSAHSLearningModule.php';

                switch(ilObjSAHSLearningModule::_lookupSubType($target_id))
                {
                        case 'hacp':
                        case 'aicc':
                                include_once './content/classes/class.ilObjAICCLearningModule.php';

                                foreach(ilObjAICCLearningModule::_getTrackingItems($target_id) as $item)
                                {
                                        $items["$item[obj_id]"]['title'] = $item['title'];
                                        #$items[$item->getId()]['title'] = $item->getTitle();
                                }
                                return $items ? $items : array();

                        case 'scorm':
                                include_once './content/classes/class.ilObjSCORMLearningModule.php';
                                include_once './content/classes/SCORM/class.ilSCORMItem.php';

                                foreach(ilObjSCORMLearningModule::_getTrackingItems($target_id) as $item)
                                {
                                        $items[$item->getId()]['title'] = $item->getTitle();
                                }
                                return $items ? $items : array();
                }
                return array();
        }

        function deleteAll()
        {
                return ilLPCollections::_deleteAll($this->getObjId());
        }


        function _deleteAll($a_obj_id)
        {
                global $ilDB;

                $query = "DELETE FROM ut_lp_collections ".
                        "WHERE obj_id = '".$a_obj_id."'";
                $ilDB->query($query);

                return true;
        }

        function &_getItems($a_obj_id)
        {
                global $ilObjDataCache;
                global $ilDB;

                include_once 'Services/Tracking/classes/class.ilLPObjSettings.php';

                $mode = ilLPObjSettings::_lookupMode($a_obj_id);
                if($mode == LP_MODE_OBJECTIVES)
                {
                        include_once 'course/classes/class.ilCourseObjective.php';
                        return ilCourseObjective::_getObjectiveIds($a_obj_id);
                }
                if($mode != LP_MODE_SCORM and $mode != LP_MODE_COLLECTION)
                {
                        return array();
                }

                if($ilObjDataCache->lookupType($a_obj_id) != 'sahs')
                {
                        $course_ref_ids = ilObject::_getAllReferences($a_obj_id);
                        $course_ref_id = end($course_ref_ids);
                        $possible_items = ilLPCollections::_getPossibleItems($course_ref_id);

                        $query = "SELECT * FROM ut_lp_collections as utc ".
                                "JOIN object_reference as obr ON item_id = ref_id ".
                                "JOIN object_data as obd ON obr.obj_id = obd.obj_id ".
                                "WHERE utc.obj_id = '".$a_obj_id."' ".
                                "ORDER BY title";
                }
                else
                {
                        // SAHS
                        $query = "SELECT * FROM ut_lp_collections WHERE obj_id = '".$a_obj_id."'";
                }

                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if($ilObjDataCache->lookupType($a_obj_id) != 'sahs')
                        {
                                if(!in_array($row->item_id,$possible_items))
                                {
                                        ilLPCollections::__deleteEntry($a_obj_id,$row->item_id);
                                        continue;
                                }
                        }
                        // Check anonymized
                        if($ilObjDataCache->lookupType($item_obj_id = $ilObjDataCache->lookupObjId($row->item_id)) == 'tst')
                        {
                                include_once 'assessment/classes/class.ilObjTest.php';
                                if(ilObjTest::_lookupTestType($item_obj_id) == TYPE_SELF_ASSESSMENT)
                                {
                                        ilLPCollections::__deleteEntry($a_obj_id,$row->item_id);
                                        continue;
                                }
                        }
                        $items[] = $row->item_id;
                }
                return $items ? $items : array();
        }

        // Private
        function __deleteEntry($a_obj_id,$a_item_id)
        {
                global $ilDB;
                
                $query = "DELETE FROM ut_lp_collections ".
                        "WHERE obj_id = '".$a_obj_id."' ".
                        "AND item_id = '".$a_item_id."'";
                $ilDB->query($query);
                return true;
        }


        function __read()
        {
                global $ilObjDataCache;

                if($ilObjDataCache->lookupType($this->getObjId()) != 'sahs')
                {
                        $course_ref_ids = ilObject::_getAllReferences($this->getObjId());
                        $course_ref_id = end($course_ref_ids);
                        $query = "SELECT * FROM ut_lp_collections as utc ".
                                "JOIN object_reference as obr ON item_id = ref_id ".
                                "JOIN object_data as obd ON obr.obj_id = obd.obj_id ".
                                "WHERE utc.obj_id = '".$this->db->quote($this->obj_id)."' ".
                                "ORDER BY title";
                }
                else
                {
                        $query = "SELECT * FROM ut_lp_collections WHERE obj_id = '".$this->getObjId()."'";
                }
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if($ilObjDataCache->lookupType($this->getObjId()) != 'sahs')
                        {
                                if(!in_array($row->item_id,ilLPCollections::_getPossibleItems($course_ref_id)))
                                {
                                        $this->__deleteEntry($this->getObjId(),$row->item_id);
                                        continue;
                                }
                        }
                        // Check anonymized
                        if($ilObjDataCache->lookupType($item_obj_id = $ilObjDataCache->lookupObjId($row->item_id)) == 'tst')
                        {
                                include_once 'assessment/classes/class.ilObjTest.php';
                                if(ilObjTest::_lookupTestType($item_obj_id) == TYPE_SELF_ASSESSMENT)
                                {
                                        $this->__deleteEntry($a_obj_id,$row->item_id);
                                        continue;
                                }
                        }
                        $this->items[] = $row->item_id;
                }
                
        }
}
?>