class.ilCourseObjectiveMaterials.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 ilCourseObjectiveMaterials
{
        var $db = null;
 
        var $objective_id = null;
        var $lms;
 
        public function __construct($a_objective_id)
        {
                global $ilDB;
 
                $this->db =& $ilDB;
        
                $this->objective_id = $a_objective_id;
 
                $this->__read();
        }
        
        public function cloneDependencies($a_new_objective,$a_copy_id)
        {
                global $ilObjDataCache,$ilLog;
                
                include_once('Services/CopyWizard/classes/class.ilCopyWizardOptions.php');
                $cwo = ilCopyWizardOptions::_getInstance($a_copy_id);
                $mappings = $cwo->getMappings();
                #$ilLog->write(__METHOD__.': 1');
                foreach($this->getMaterials() as $material)
                {
                #$ilLog->write(__METHOD__.': 2');
                        // Copy action omit ?
                        if(!isset($mappings[$material['ref_id']]) or !$mappings[$material['ref_id']])
                        {
                                continue;
                        }
                #$ilLog->write(__METHOD__.': 3');
                        $material_ref_id = $material['ref_id'];
                        $material_rbac_obj_id = $ilObjDataCache->lookupObjId($material_ref_id);
                        $material_obj_id = $material['obj_id'];
                        $new_ref_id = $mappings[$material_ref_id];
                        $new_rbac_obj_id = $ilObjDataCache->lookupObjId($new_ref_id);
                #$ilLog->write(__METHOD__.': 4');
                        
                        // Link
                        if($new_rbac_obj_id == $material_rbac_obj_id)
                        {
                #$ilLog->write(__METHOD__.': 5');
                                $ilLog->write(__METHOD__.': Material has been linked. Keeping object id.');
                                $new_obj_id = $material_obj_id;
                        }
                        elseif($material['type'] == 'st' or $material['type'] == 'pg')
                        {
                                
                                #$GLOBALS['ilLog']->write(__METHOD__.': '.print_r($material,TRUE));
                                #$GLOBALS['ilLog']->write(__METHOD__.': '.print_r($mappings,TRUE));
                                
                #$ilLog->write(__METHOD__.': 6');
                                // Chapter assignment
                                $new_material_info = isset($mappings[$material_ref_id.'_'.$material_obj_id]) ?
                                        $mappings[$material_ref_id.'_'.$material_obj_id] :
                                        '';
                                $new_material_arr = explode('_',$new_material_info);
                                if(!isset($new_material_arr[1]) or !$new_material_arr[1])
                                {
                                        $ilLog->write(__METHOD__.': No mapping found for chapter: '.$material_obj_id);
                                        continue;
                                }
                                $new_obj_id = $new_material_arr[1];
                                $ilLog->write(__METHOD__.': New material id is: '.$new_obj_id);
                        }
                        else
                        {
                #$ilLog->write(__METHOD__.': 7');
                                // Any type
                                $new_obj_id = $ilObjDataCache->lookupObjId($mappings[$material_ref_id]);
                        }
        
                #$ilLog->write(__METHOD__.': 8');
                        $new_material = new ilCourseObjectiveMaterials($a_new_objective);
                #$ilLog->write(__METHOD__.': 8.1');
                        $new_material->setLMRefId($new_ref_id);
                #$ilLog->write(__METHOD__.': 8.2');
                        $new_material->setLMObjId($new_obj_id);
                #$ilLog->write(__METHOD__.': 8.3');
                        $new_material->setType($material['type']);
                #$ilLog->write(__METHOD__.': 8.4');
                        $new_material->add();
                #$ilLog->write(__METHOD__.': 9');
                        
                }
        }
        
        public static function _getAssignedMaterials($a_objective_id)
        {
                global $ilDB;
                
                $query = "SELECT DISTINCT(ref_id) ref_id FROM crs_objective_lm ".
                        "WHERE objective_id = ".$ilDB->quote($a_objective_id ,'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $ref_ids[] = $row->ref_id;
                }
                return $ref_ids ? $ref_ids : array();
        }
        
        
 
        public static function _getAssignableMaterials($a_container_id)
        {
                global $tree,$ilDB;
                
                $container_obj_id = ilObject::_lookupObjId($a_container_id);
                
                $all_materials = $tree->getSubTree($tree->getNodeData($a_container_id),true);
                $all_materials = ilUtil::sortArray($all_materials,'title','asc');
                
                // Filter
                foreach($all_materials as $material)
                {
                        switch($material['type'])
                        {
                                case 'tst':
                                        
                                        include_once './Modules/Course/classes/class.ilCourseObjectiveMaterials.php';
                                        $type = ilLOTestAssignments::getInstance($container_obj_id)->getTypeByTest($material['child']);
                                        if($type != ilLOSettings::TYPE_TEST_UNDEFINED)
                                        {
                                                continue;
                                        }
                                        else
                                        {
                                                $assignable[] = $material;
                                        }
                                        break;
                                        
                                case 'crs':
                                case 'rolf':
                                case 'itgr':
                                        continue;
                                
                                default:
                                        $assignable[] = $material;
                                        break;
                        }
                }
                return $assignable ? $assignable : array();
        }
        
        public static function _getAllAssignedMaterials($a_container_id)
        {
                global $ilDB;
                
                $query = "SELECT DISTINCT(com.ref_id) ref_id FROM crs_objectives co ".
                        "JOIN crs_objective_lm com ON co.objective_id = com.objective_id ".
                        "JOIN object_reference obr ON com.ref_id = obr.ref_id ".
                        "JOIN object_data obd ON obr.obj_id = obd.obj_id ".
                        "WHERE co.crs_id = ".$ilDB->quote($a_container_id,'integer')." ".
                        "ORDER BY obd.title ";
                        
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $ref_ids[] = $row->ref_id;
                }
                return $ref_ids ? $ref_ids : array();
        }
 
        public function getMaterials()
        {
                return $this->lms ? $this->lms : array();
        }
 
        function getChapters()
        {
                foreach($this->lms as $lm_data)
                {
                        if($lm_data['type'] == 'st')
                        {
                                $chapters[] = $lm_data;
                        }
                        if($lm_data['type'] == 'pg')
                        {
                                $chapters[] = $lm_data;
                        }
                }
                return $chapters ? $chapters : array();
        }
        
        function getLM($lm_id)
        {
                return $this->lms[$lm_id] ? $this->lms[$lm_id] : array();
        }
 
        function getObjectiveId()
        {
                return $this->objective_id;
        }
 
        function setLMRefId($a_ref_id)
        {
                $this->lm_ref_id = $a_ref_id;
        }
        function getLMRefId()
        {
                return $this->lm_ref_id ? $this->lm_ref_id : 0;
        }
        function setLMObjId($a_obj_id)
        {
                $this->lm_obj_id = $a_obj_id;
        }
        function getLMObjId()
        {
                return $this->lm_obj_id ? $this->lm_obj_id : 0;
        }
        function setType($a_type)
        {
                $this->type = $a_type;
        }
        function getType()
        {
                return $this->type;
        }
        
        public function isAssigned($a_ref_id, $a_get_id = false)
        {
                global $ilDB;
                
                $query = "SELECT * FROM crs_objective_lm ".
                        "WHERE ref_id = ".$this->db->quote($a_ref_id ,'integer')." ".
                        "AND objective_id = ".$this->db->quote($this->getObjectiveId() ,'integer')." ".
                        "AND type != 'st' AND type != 'pg' ";
                $res = $this->db->query($query);
                
                // begin-patch lok
                if(!$a_get_id)
                {
                        return $res->numRows() ? true : false;
                }
                else
                {
                        $row = $this->db->fetchAssoc($res);
                        return $row["lm_ass_id"];
                }
                // end-patch lok
        }
 
        public function isChapterAssigned($a_ref_id,$a_obj_id)
        {
                global $ilDB;
                
                $query = "SELECT * FROM crs_objective_lm ".
                        "WHERE ref_id = ".$this->db->quote($a_ref_id ,'integer')." ".
                        "AND obj_id = ".$this->db->quote($a_obj_id ,'integer')." ".
                        "AND objective_id = ".$this->db->quote($this->getObjectiveId() ,'integer')." ".
                        "AND (type = 'st' OR type = 'pg')";
                $res = $this->db->query($query);
                return $res->numRows() ? true : false;
        }
        function checkExists()
        {
                global $ilDB;
                
                if($this->getLMObjId())
                {
                        $query = "SELECT * FROM crs_objective_lm ".
                                "WHERE objective_id = ".$ilDB->quote($this->getObjectiveId() ,'integer')." ".
                                "AND ref_id = ".$ilDB->quote($this->getLMRefId() ,'integer')." ".
                                "AND obj_id = ".$ilDB->quote($this->getLMObjId() ,'integer')." ";
                }
                else
                {
                        $query = "SELECT * FROM crs_objective_lm ".
                                "WHERE objective_id = ".$ilDB->quote($this->getObjectiveId() ,'integer')." ".
                                "AND ref_id = ".$ilDB->quote($this->getLMRefId() ,'integer')." ";
                }
 
                $res = $this->db->query($query);
 
                return $res->numRows() ? true : false;
        }
 
        function add()
        {
                global $ilDB;
                
                $next_id = $ilDB->nextId('crs_objective_lm');
                $query = "INSERT INTO crs_objective_lm (lm_ass_id,objective_id,ref_id,obj_id,type) ".
                        "VALUES( ".
                        $ilDB->quote($next_id, 'integer').", ".
                        $ilDB->quote($this->getObjectiveId() ,'integer').", ".
                        $ilDB->quote($this->getLMRefId() ,'integer').", ".
                        $ilDB->quote($this->getLMObjId() ,'integer').", ".
                        $ilDB->quote($this->getType() ,'text').
                        ")";
                $res = $ilDB->manipulate($query);
                
                return (int) $next_id;
        }
        function delete($lm_id)
        {
                global $ilDB;
                
                if(!$lm_id)
                {
                        return false;
                }
 
                $query = "DELETE FROM crs_objective_lm ".
                        "WHERE lm_ass_id = ".$ilDB->quote($lm_id ,'integer')." ";
                $res = $ilDB->manipulate($query);
 
                return true;
        }
 
        function deleteAll()
        {
                global $ilDB;
                
                $query = "DELETE FROM crs_objective_lm ".
                        "WHERE objective_id = ".$ilDB->quote($this->getObjectiveId() ,'integer')." ";
                $res = $ilDB->manipulate($query);
                return true;
        }
        
        // begin-patch lok
        
        public function writePosition($a_ass_id, $a_position)
        {
                global $ilDB;
                
                $query = "UPDATE crs_objective_lm ".
                        "SET position = ".$this->db->quote((string) $a_position ,'integer')." ".
                        "WHERE objective_id = ".$this->db->quote($this->getObjectiveId() ,'integer')." ".
                        "AND lm_ass_id = ".$ilDB->quote($a_ass_id, "integer");
                $res = $ilDB->manipulate($query);
        }
        
        // end-patch lok
 
        // PRIVATE
        function __read()
        {
                global $tree,$ilDB;
                
                include_once('Modules/Course/classes/class.ilCourseObjective.php');
                $container_ref_ids = ilObject::_getAllReferences(ilCourseObjective::_lookupContainerIdByObjectiveId($this->objective_id));
                $container_ref_id  = current($container_ref_ids);
                
                // begin-patch lok      
                
                $this->lms = array();
                $query = "SELECT position,lm_ass_id,lm.ref_id,lm.obj_id,lm.type FROM crs_objective_lm lm ".
                        "JOIN object_reference obr ON lm.ref_id = obr.ref_id ".
                        "JOIN object_data obd ON obr.obj_id = obd.obj_id ".
                        "LEFT JOIN lm_data lmd ON lmd.obj_id = lm.obj_id ".
                        "WHERE objective_id = ".$ilDB->quote($this->getObjectiveId(),'integer')." ".                    
                        "ORDER BY position,obd.title,lmd.title";                        
                        
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if(!$tree->isInTree($row->ref_id) or !$tree->isGrandChild($container_ref_id,$row->ref_id))
                        {
                                $this->delete($row->lm_ass_id);
                                continue;
                        }
                        $lm['ref_id'] = $row->ref_id;
                        $lm['obj_id'] = $row->obj_id;
                        $lm['type'] = $row->type;
                        $lm['lm_ass_id'] = $row->lm_ass_id;
                        $lm['position'] = $row->position;
 
                        $this->lms[$row->lm_ass_id] = $lm;
                }
                
                // end-patch lok
                
                return true;
        }
        
        // begin-patch optes_lok_export
        
        public function toXml(ilXmlWriter $writer)
        {
                foreach($this->getMaterials() as $material)
                {
                        $writer->xmlElement(
                                'Material',
                                array(
                                        'refId'         => $material['ref_id'],
                                        'objId'         => $material['obj_id'],
                                        'type'          => $material['type'],
                                        'position'      => $material['position']
                                )
                        );
                }
                return true;
        }
        
}
?>