class.ilServicesTrackingExtractor.php

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<?php
/* Copyright (c) 1998-2016 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once './Services/WorkflowEngine/classes/extractors/class.ilBaseExtractor.php';

class ilServicesTrackingExtractor extends ilBaseExtractor
{
        public function extract($event, $parameters)
        {
                //$this->ilExtractedParams->setSubjectType('tracking'); See below what we do here different from other impl.

                switch($event)
                {
                        case 'updateStatus':
                                $this->extractTracking($parameters);
                                break;
                }

                return $this->ilExtractedParams;
        }

        protected function extractTracking($parameters)
        {
                $this->ilExtractedParams->setSubjectType('tracking_' . $parameters['status']);
                $this->ilExtractedParams->setSubjectId($parameters['obj_id']);
                $this->ilExtractedParams->setContextType('usr_id');
                $this->ilExtractedParams->setContextId($parameters['usr_id']);
        }
}