class.ilSCORMResource.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. |
        +-----------------------------------------------------------------------------+
*/

require_once("./Modules/ScormAicc/classes/SCORM/class.ilSCORMObject.php");
require_once("./Modules/ScormAicc/classes/SCORM/class.ilSCORMResourceFile.php");
require_once("./Modules/ScormAicc/classes/SCORM/class.ilSCORMResourceDependency.php");

class ilSCORMResource extends ilSCORMObject
{
        var $import_id;
        var $resourcetype;
        var $scormtype;
        var $href;
        var $xml_base;
        var $files;
        var $dependencies;


        function ilSCORMResource($a_id = 0)
        {
                $this->files = array();
                $this->dependencies = array();
                $this->setType("sre");
                parent::ilSCORMObject($a_id);

        }

        function getImportId()
        {
                return $this->import_id;
        }

        function setImportId($a_import_id)
        {
                $this->import_id = $a_import_id;
        }

        function getResourceType()
        {
                return $this->resourcetype;
        }

        function setResourceType($a_type)
        {
                $this->resourcetype = $a_type;
        }

        function getScormType()
        {
                return $this->scormtype;
        }

        function setScormType($a_scormtype)
        {
                $this->scormtype = $a_scormtype;
        }

        function getHRef()
        {
                return $this->href;
        }

        function setHRef($a_href)
        {
                $this->href = $a_href;
                $this->setTitle($a_href);
        }

        function getXmlBase()
        {
                return $this->xml_base;
        }

        function setXmlBase($a_xml_base)
        {
                $this->xml_base = $a_xml_base;
        }

        function addFile(&$a_file_obj)
        {
                $this->files[] =& $a_file_obj;
        }

        function &getFiles()
        {
                return $this->files;
        }

        function addDependency(&$a_dependency)
        {
                $this->dependencies[] =& $a_dependency;
        }

        function &getDependencies()
        {
                return $this->dependencies;
        }

        function read()
        {
                global $ilDB;
                
                parent::read();
        
                $obj_set = $ilDB->queryF(
                        'SELECT * FROM sc_resource WHERE obj_id = %s',
                        array('integer'),
                        array($this->getId())
                );              
                $obj_rec = $ilDB->fetchAssoc($obj_set);         
                $this->setImportId($obj_rec["import_id"]);
                $this->setResourceType($obj_rec["resourcetype"]);
                $this->setScormType($obj_rec["scormtype"]);
                $this->setHRef($obj_rec["href"]);
                $this->setXmlBase($obj_rec["xml_base"]);

                // read files
                $file_set = $ilDB->queryF(
                        'SELECT href FROM sc_resource_file WHERE res_id = %s ORDER BY nr',
                        array('integer'),
                        array($this->getId())
                );
                while ($file_rec =$ilDB->fetchAssoc($file_set))
                {
                        $res_file =& new ilSCORMResourceFile();
                        $res_file->setHref($file_rec["href"]);
                        $this->addFile($res_file);
                }
                // read dependencies

                $dep_set = $ilDB->queryF(
                        'SELECT identifierref FROM sc_resource_dependen WHERE res_id = %s ORDER BY nr',
                        array('integer'),
                        array($this->getId())
                );      
                while ($dep_rec =$ilDB->fetchAssoc($dep_set))
                {
                        $res_dep =& new ilSCORMResourceDependency();
                        $res_dep->setIdentifierRef($dep_rec["identifierref"]);
                        $this->addDependency($res_dep);
                }
        }

        function readByIdRef($a_id_ref, $a_slm_id)
        {
                global $ilBench, $ilDB;
                
                $ilBench->start("SCORMResource", "readByIdRef_Query");
                
                $id_set = $ilDB->queryF(
                        'SELECT ob.obj_id id FROM sc_resource res, scorm_object ob
                        WHERE ob.obj_id = res.obj_id 
                        AND res.import_id = %s 
                        AND ob.slm_id = %s',
                        array('text', 'integer'),
                        array($a_id_ref, $a_slm_id)
                );
                
                $ilBench->stop("SCORMResource", "readByIdRef_Query");
                
                if ($id_rec = $ilDB->fetchAssoc($id_set))
                {
                        $this->setId($id_rec["id"]);
                        $this->read();
                }
        }

        function _lookupIdByIdRef($a_id_ref, $a_slm_id)
        {
                global $ilBench, $ilDB;
                
                $id_set = $ilDB->queryF(
                        'SELECT ob.obj_id id FROM sc_resource res, scorm_object ob
                        WHERE ob.obj_id = res.obj_id 
                        AND res.import_id = %s 
                        AND ob.slm_id = %s',
                        array('text', 'integer'),
                        array($a_id_ref ,$a_slm_id)
                );              
                
                if ($id_rec = $ilDB->fetchAssoc($id_set))
                {
                        return $id_rec["id"];
                }
                return 0;
        }
        
        function _lookupScormType($a_obj_id)
        {
                global $ilDB;
                
                $st_set = $ilDB->queryF(
                        'SELECT scormtype FROM sc_resource WHERE obj_id = %s',
                        array('integer'),
                        array($a_obj_id)
                );
                if ($st_rec = $ilDB->fetchAssoc($st_set))
                {
                        return $st_rec["scormtype"];
                }
                return "";
        }

        function create()
        {
                global $ilDB;
                
                parent::create();

                $ilDB->manipulateF('
                        INSERT INTO sc_resource 
                        (obj_id, import_id, resourcetype, scormtype, href, xml_base) 
                        VALUES(%s, %s, %s, %s, %s, %s)',
                        array('integer','text','text','text','text','text'),
                        array(  $this->getId(),
                                        $this->getImportId(),
                                        $this->getResourceType(),
                                        $this->getScormType(),
                                        $this->getHref(),
                                        $this->getXmlBase()
                        )
                );

                // save files
                for($i=0; $i<count($this->files); $i++)
                {
                        $nextId = $ilDB->nextId('sc_resource_file');

                        $ilDB->manipulateF('
                                INSERT INTO sc_resource_file (id,res_id, href, nr) 
                                VALUES(%s, %s, %s, %s)',
                                array('integer', 'integer', 'text', 'integer'),
                                array($nextId, $this->getId(), $this->files[$i]->getHref(), ($i + 1))
                        );
                
                }

                // save dependencies
                for($i=0; $i<count($this->dependencies); $i++)
                {
                        $nextId = $ilDB->nextId('sc_resource_dependen');

                        $ilDB->manipulateF('
                                INSERT INTO sc_resource_dependen (id, res_id, identifierref, nr)
                                VALUES(%s, %s, %s, %s)',
                                array('integer', 'integer', 'text', 'integer'),
                                array($nextId, $this->getId(), $this->files[$i]->getHref(), ($i + 1))
                        );              
                }
        }

        function update()
        {
                global $ilDB;
                
                parent::update();

                $ilDB->manipulateF('
                        UPDATE sc_resource 
                        SET import_id = %s,
                                resourcetype = %s,
                                scormtype = %s,
                                href = %s,
                                xml_base = %s
                        WHERE obj_id = %s',
                        array('text', 'text', 'text', 'text', 'text', 'integer'),
                        array(  $this->getImportId(),
                                        $this->getResourceType(),
                                        $this->getScormType(),
                                        $this->getHRef(),
                                        $this->getXmlBase(),
                                        $this->getId())
                );

                // save files
                $ilDB->manipulateF(
                        'DELETE FROM sc_resource_file WHERE res_id = %s',
                        array('integer'),
                        array($this->getId())
                );
                
                for($i=0; $i<count($this->files); $i++)
                {       
                        $nextId = $ilDB->nextId('sc_resource_file');
                        
                        $ilDB->manipulateF(
                                'INSERT INTO sc_resource_file (id, res_id, href, nr) 
                                VALUES (%s, %s, %s, %s)',
                                array('integer', 'integer', 'text', 'integer'), 
                                array($nextId, $this->getId(), $this->files[$i]->getHref(), ($i + 1))
                        );
                }

                // save dependencies
                $ilDB->manipulateF(
                        'DELETE FROM sc_resource_dependen WHERE res_id = %s',
                        array('integer'),
                        array($this->getId())
                );              
                
                for($i = 0; $i < count($this->dependencies); $i++)
                {
                        $nextId = $ilDB->nextId('sc_resource_dependen');

                        $ilDB->manipulateF('
                                INSERT INTO sc_resource_dependen (id, res_id, identifierref, nr) VALUES
                                (%s, %s, %s, %s) ',
                                array('integer', 'integer', 'text', 'integer'), 
                                array($nextId, $this->getId(), $this->dependencies[$i]->getIdentifierRef(), ($i + 1))
                        );
                }
        }

        function delete()
        {
                global $ilDB;

                parent::delete();

                $ilDB->manipulateF(
                        'DELETE FROM sc_resource WHERE obj_id = %s',
                        array('integer'),
                        array($this->getId())
                );

                $ilDB->manipulateF(
                        'DELETE FROM sc_resource_file WHERE res_id = %s',
                        array('integer'),
                        array($this->getId())
                );

                $ilDB->manipulateF(
                        'DELETE FROM sc_resource_dependen WHERE res_id = %s',
                        array('integer'),
                        array($this->getId())
                );
        }
}
?>