ArticleMedraXmlFilter::createArticleNode PHP Method

    function createArticleNode($doc, $pubObject)
    {
        $deployment = $this->getDeployment();
        $context = $deployment->getContext();
        $cache = $deployment->getCache();
        $plugin = $deployment->getPlugin();
        $request = Application::getRequest();
        $router = $request->getRouter();
        assert(is_a($pubObject, 'PublishedArticle') && $this->isWork($context, $plugin) || is_a($pubObject, 'ArticleGalley') && !$this->isWork($context, $plugin));
        if (is_a($pubObject, 'PublishedArticle')) {
            $galley = null;
            $article = $pubObject;
            if (!$cache->isCached('articles', $article->getId())) {
                $cache->add($article, null);
            }
            $articleNodeName = 'DOISerialArticleWork';
            $workOrProduct = 'Work';
            $epubFormat = O4DOI_EPUB_FORMAT_HTML;
        } else {
            $galley = $pubObject;
            $galleyFile = $galley->getFile();
            if ($cache->isCached('articles', $galley->getSubmissionId())) {
                $article = $cache->get('articles', $galley->getSubmissionId());
            } else {
                $publishedArticleDao = DAORegistry::getDAO('PublishedArticleDAO');
                /* @var $publishedArticleDao PublishedArticleDAO */
                $article = $publishedArticleDao->getPublishedArticleByArticleId($galley->getSubmissionId());
                if ($article) {
                    $cache->add($article, null);
                }
            }
            $articleNodeName = 'DOISerialArticleVersion';
            $workOrProduct = 'Product';
            $epubFormat = null;
            if ($galley->isPdfGalley()) {
                $epubFormat = O4DOI_EPUB_FORMAT_PDF;
            } else {
                if ($galley->getRemoteURL() || $galleyFile->getFileType() == 'text/html') {
                    $epubFormat = O4DOI_EPUB_FORMAT_HTML;
                }
            }
        }
        $articleNode = $doc->createElementNS($deployment->getNamespace(), $articleNodeName);
        // Notification type (mandatory)
        $doi = $pubObject->getStoredPubId('doi');
        $registeredDoi = $pubObject->getData('medra::registeredDoi');
        assert(empty($registeredDoi) || $registeredDoi == $doi);
        $notificationType = empty($registeredDoi) ? O4DOI_NOTIFICATION_TYPE_NEW : O4DOI_NOTIFICATION_TYPE_UPDATE;
        $articleNode->appendChild($node = $doc->createElementNS($deployment->getNamespace(), 'NotificationType', $notificationType));
        // DOI (mandatory)
        $articleNode->appendChild($node = $doc->createElementNS($deployment->getNamespace(), 'DOI', htmlspecialchars($doi, ENT_COMPAT, 'UTF-8')));
        // DOI URL (mandatory)
        $urlPath = $article->getBestArticleId();
        if ($galley) {
            $urlPath = array($article->getBestArticleId(), $galley->getBestGalleyId());
        }
        $url = $router->url($request, $context->getPath(), 'article', 'view', $urlPath, null, null, true);
        if ($plugin->isTestMode($context)) {
            // Change server domain for testing.
            $url = PKPString::regexp_replace('#://[^\\s]+/index.php#', '://example.com/index.php', $url);
        }
        $articleNode->appendChild($node = $doc->createElementNS($deployment->getNamespace(), 'DOIWebsiteLink', $url));
        // DOI strucural type
        $articleNode->appendChild($node = $doc->createElementNS($deployment->getNamespace(), 'DOIStructuralType', $this->getDOIStructuralType()));
        // Registrant (mandatory)
        $articleNode->appendChild($node = $doc->createElementNS($deployment->getNamespace(), 'RegistrantName', htmlspecialchars($plugin->getSetting($context->getId(), 'registrantName'), ENT_COMPAT, 'UTF-8')));
        // Registration authority (mandatory)
        $articleNode->appendChild($node = $doc->createElementNS($deployment->getNamespace(), 'RegistrationAuthority', 'mEDRA'));
        // WorkIdentifier - proprietary ID
        $pubObjectProprietaryId = $context->getId() . '-' . $article->getIssueId() . '-' . $article->getId();
        if ($galley) {
            $pubObjectProprietaryId .= '-g' . $galley->getId();
        }
        $articleNode->appendChild($this->createIdentifierNode($doc, $workOrProduct, O4DOI_ID_TYPE_PROPRIETARY, $pubObjectProprietaryId));
        // Issue/journal locale precedence.
        $journalLocalePrecedence = $this->getObjectLocalePrecedence($context, null, null);
        // Serial Publication (mandatory)
        $articleNode->appendChild($this->createSerialPublicationNode($doc, $journalLocalePrecedence, $epubFormat));
        // Journal Issue (mandatory)
        $issueId = $article->getIssueId();
        if ($cache->isCached('issues', $issueId)) {
            $issue = $cache->get('issues', $issueId);
        } else {
            $issueDao = DAORegistry::getDAO('IssueDAO');
            /* @var $issueDao IssueDAO */
            $issue = $issueDao->getById($issueId, $context->getId());
            if ($issue) {
                $cache->add($issue, null);
            }
        }
        $articleNode->appendChild($this->createJournalIssueNode($doc, $issue, $journalLocalePrecedence));
        // Object locale precedence.
        $objectLocalePrecedence = $this->getObjectLocalePrecedence($context, $article, $galley);
        // Content Item (mandatory for articles)
        $articleNode->appendChild($this->createContentItemNode($doc, $issue, $article, $galley, $objectLocalePrecedence));
        return $articleNode;
    }