course/classes/class.ilCourseObjectiveLM.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 ilCourseObjectiveLM
{
        var $db = null;

        var $objective_id = null;
        var $lms;

        function ilCourseObjectiveLM($a_objective_id)
        {
                global $ilDB;

                $this->db =& $ilDB;
        
                $this->objective_id = $a_objective_id;

                $this->__read();
        }

        function getLMs()
        {
                return $this->lms ? $this->lms : array();
        }

        function getChapters()
        {
                foreach($this->lms as $lm_data)
                {
                        if($lm_data['type'] == 'st')
                        {
                                $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;
        }

        function checkExists()
        {
                if($this->getLMObjId())
                {
                        $query = "SELECT * FROM crs_objective_lm ".
                                "WHERE objective_id = '".$this->getObjectiveId()."' ".
                                "AND ref_id = '".$this->getLMRefId()."' ".
                                "AND obj_id = '".$this->getLMObjId()."'";
                }
                else
                {
                        $query = "SELECT * FROM crs_objective_lm ".
                                "WHERE objective_id = '".$this->getObjectiveId()."' ".
                                "AND ref_id = '".$this->getLMRefId()."'";
                }

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

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

        function add()
        {
                $query = "INSERT INTO crs_objective_lm ".
                        "SET objective_id = '".$this->getObjectiveId()."', ".
                        "ref_id = '".$this->getLMRefId()."', ".
                        "obj_id = '".$this->getLMObjId()."', ".
                        "type = '".$this->getType()."'";

                $this->db->query($query);

                return true;
        }
        function delete($lm_id)
        {
                if(!$lm_id)
                {
                        return false;
                }

                $query = "DELETE FROM crs_objective_lm ".
                        "WHERE lm_ass_id = '".$lm_id."'";

                $this->db->query($query);

                return true;
        }

        function deleteAll()
        {
                $query = "DELETE FROM crs_objective_lm ".
                        "WHERE objective_id = '".$this->getObjectiveId()."'";

                $this->db->query($query);

                return true;
        }

        // PRIVATE
        function __read()
        {
                global $tree;

                $this->lms = array();
                $query = "SELECT * FROM crs_objective_lm ".
                        "WHERE objective_id = '".$this->getObjectiveId()."'";

                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if(!$tree->isInTree($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;

                        $this->lms[$row->lm_ass_id] = $lm;
                }
                return true;
        }
}
?>