Article::_getContextLicenseFieldValue PHP Method

    function _getContextLicenseFieldValue($locale, $field)
    {
        $contextDao = Application::getContextDAO();
        $context = $contextDao->getById($this->getContextId());
        $fieldValue = null;
        // Scrutinizer
        switch ($field) {
            case PERMISSIONS_FIELD_LICENSE_URL:
                $fieldValue = $context->getSetting('licenseURL');
                break;
            case PERMISSIONS_FIELD_COPYRIGHT_HOLDER:
                switch ($context->getSetting('copyrightHolderType')) {
                    case 'author':
                        $fieldValue = array($context->getPrimaryLocale() => $this->getAuthorString());
                        break;
                    case 'other':
                        $fieldValue = $context->getSetting('copyrightHolderOther');
                        break;
                    case 'context':
                    default:
                        $fieldValue = $context->getName(null);
                        break;
                }
                break;
            case PERMISSIONS_FIELD_COPYRIGHT_YEAR:
                // Default copyright year to current year
                $fieldValue = date('Y');
                // Override based on context settings
                $publishedArticleDao =& DAORegistry::getDAO('PublishedArticleDAO');
                $publishedArticle = $publishedArticleDao->getPublishedArticleByArticleId($this->getId());
                if ($publishedArticle) {
                    switch ($context->getSetting('copyrightYearBasis')) {
                        case 'submission':
                            // override to the submission's year if published as you go
                            $fieldValue = date('Y', strtotime($publishedArticle->getDatePublished()));
                            break;
                        case 'issue':
                            if ($publishedArticle->getIssueId()) {
                                // override to the issue's year if published as issue-based
                                $issueDao =& DAORegistry::getDAO('IssueDAO');
                                $issue = $issueDao->getIssueByArticleId($this->getId());
                                if ($issue && $issue->getDatePublished()) {
                                    $fieldValue = date('Y', strtotime($issue->getDatePublished()));
                                }
                            }
                            break;
                        default:
                            assert(false);
                    }
                }
                break;
            default:
                assert(false);
        }
        // Return the fetched license field
        if ($locale === null || !is_array($fieldValue)) {
            return $fieldValue;
        }
        if (isset($fieldValue[$locale])) {
            return $fieldValue[$locale];
        }
        return null;
    }