class.ilCourseExporter.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */


include_once './Modules/Course/classes/class.ilCourseXMLWriter.php';
include_once './Services/Export/classes/class.ilXmlExporter.php';

class ilCourseExporter extends ilXmlExporter
{
        const ENTITY_OBJECTIVE = 'objectives';
        const ENTITY_MAIN = 'crs';
        
        private $writer = null;
        
        protected $logger = null;

        public function __construct()
        {
                $this->logger = $GLOBALS['DIC']->logger()->crs();
        }
        
        public function init()
        {
                
        }
        
        public function getXmlExportHeadDependencies($a_entity, $a_target_release, $a_ids)
        {
                if($a_entity != self::ENTITY_MAIN)
                {
                        return array();
                }

                // always trigger container because of co-page(s)
                return array(
                        array(
                                'component'             => 'Services/Container',
                                'entity'                => 'struct',
                                'ids'                   => $a_ids
                        )
                );
        }
        
        // begin-patch optes_lok_export
        public function getXmlExportTailDependencies($a_entity, $a_target_release, $a_ids)
        {
                $dependencies = array();
                if($a_entity == self::ENTITY_MAIN)
                {
                        $obj_id = 0;
                        foreach($a_ids as $id)
                        {
                                $obj_id = $id;
                        }

                        $dependencies[] = array(
                                        'component'                     => 'Modules/Course',
                                        'entity'                        => self::ENTITY_OBJECTIVE,
                                        'ids'                           => $obj_id
                        );
                        
                        include_once './Modules/Course/classes/Objectives/class.ilLOPage.php';
                        include_once './Modules/Course/classes/class.ilCourseObjective.php';
                        $page_ids = array();
                        foreach(ilCourseObjective::_getObjectiveIds($obj_id) as $objective_id)
                        {
                                foreach(ilLOPage::getAllPages('lobj', $objective_id) as $page_id)
                                {
                                        $page_ids[] = ('lobj:'.$page_id['id']);
                                }
                        }
                        
                        if($page_ids)
                        {
                                $dependencies[] = array(
                                        'component' => 'Services/COPage',
                                        'entity' => 'pg',
                                        'ids' => $page_ids
                                );
                        }
                        
                        
                        
                }
                return $dependencies;
        }
        // end-patch optes_lok_export
        
        
        public function getXmlRepresentation($a_entity, $a_schema_version, $a_id)
        {               
                $course_ref_id = end(ilObject::_getAllReferences($a_id));
                $course = ilObjectFactory::getInstanceByRefId($course_ref_id,false);
                
                // begin-patch optes_lok_export
                if($a_entity == self::ENTITY_OBJECTIVE)
                {
                        try {
                                include_once './Modules/Course/classes/Objectives/class.ilLOXmlWriter.php';
                                $writer = new ilLOXmlWriter($course_ref_id);
                                $writer->write();
                                return $writer->getXml();
                        } 
                        catch (Exception $ex) {
                                $this->logger->error('Export failed with message: ' . $ex->getMessage());
                                // and throw
                                throw $ex;
                        }
                }
                // end-patch optes_lok_export
                
                if(!$course instanceof ilObjCourse)
                {
                        $this->logger->warning($a_id .' is not id of course instance.');
                        return ''; 
                }
                
                $this->writer = new ilCourseXMLWriter($course);
                $this->writer->setMode(ilCourseXMLWriter::MODE_EXPORT);
                $this->writer->start();
                return $this->writer->xmlDumpMem(false);
        }
        
        public function getValidSchemaVersions($a_entity)
        {
                return array (
                        "4.1.0" => array(
                                "namespace" => "http://www.ilias.de/Modules/Course/crs/4_1",
                                "xsd_file" => "ilias_course_4_1.xsd",
                                "uses_dataset" => false,
                                "min" => "4.1.0",
                                "max" => "4.4.999"),
                        "5.0.0" => array(
                                "namespace" => "http://www.ilias.de/Modules/Course/crs/5_0",
                                "xsd_file" => "ilias_crs_5_0.xsd",
                                "uses_dataset" => false,
                                "min" => "5.0.0",
                                "max" => "")
                );
        }
}
?>