PKPSubmissionMetadataViewForm::execute PHP Method

    function execute($request)
    {
        $submission = $this->getSubmission();
        parent::execute($submission);
        // Execute submission metadata related operations.
        $this->_metadataFormImplem->execute($submission, $request);
    }

 /**
  * Save changes to submission.
  * @param $request PKPRequest
  */
 function execute($request)
 {
     parent::execute($request);
     $submission = $this->getSubmission();
     $submissionDao = Application::getSubmissionDAO();
     $submission->setSectionId($this->getData('sectionId'));
     // Copy an uploaded cover file for the article, if there is one.
     if ($temporaryFileId = $this->getData('temporaryFileId')) {
         $user = $request->getUser();
         $temporaryFileDao = DAORegistry::getDAO('TemporaryFileDAO');
         $temporaryFile = $temporaryFileDao->getTemporaryFile($temporaryFileId, $user->getId());
         import('classes.file.PublicFileManager');
         $publicFileManager = new PublicFileManager();
         $newFileName = 'article_' . $submission->getId() . '_cover' . $publicFileManager->getImageExtension($temporaryFile->getFileType());
         $journal = $request->getJournal();
         $publicFileManager->copyJournalFile($journal->getId(), $temporaryFile->getFilePath(), $newFileName);
         $submission->setCoverImage($newFileName);
     }
     $submission->setCoverImageAltText($this->getData('coverImageAltText'));
     $submissionDao->updateObject($submission);
     if ($submission->getDatePublished()) {
         import('classes.search.ArticleSearchIndex');
         ArticleSearchIndex::articleMetadataChanged($submission);
     }
 }