subjecthstsitemaphandler.java

public class SubjectHstSiteMapHandler extends ContentBeanAwareHstSiteMapItemHandler {
    private static final Logger LOGGER = LoggerFactory.getLogger(SubjectHstSiteMapHandler.class);
    @Override
    public ResolvedSiteMapItem process(ResolvedSiteMapItem resolvedSiteMapItem,
                                       HttpServletRequest request,
                                       HttpServletResponse response)
            throws HstSiteMapItemHandlerException {
        HippoBean contentBean = getContentBeanForResolvedSiteMapItem(resolvedSiteMapItem);
        if (contentBean == null) {
            LOGGER.info("No content bean found, reverting to initial site map item.");
            return resolvedSiteMapItem;
        }
        boolean contentBeanIsSubject = contentBean instanceof SubjectBean;
        if (!contentBeanIsSubject) {
            LOGGER.error("Content bean is not a SubjectBean, so this handler cannot do anything, reverting to " +
                    "initial ResolvedSiteMapItem");
            return resolvedSiteMapItem;
        }
        SubjectBean subject = (SubjectBean) contentBean;
        String componentConfigurationId = deriveComponentConfigurationIdForSubject(resolvedSiteMapItem, subject);
        if (componentConfigurationId == null) {
            LOGGER.error("Subject of type {} cannot be resolved to a component configuration id, reverting to " +
                    "initial ResolvedSiteMapItem");
            return resolvedSiteMapItem;
        }
        HstComponentConfiguration componentConfiguration =
                ResolvedSiteMapItemUtils.obtainComponentConfiguration(resolvedSiteMapItem, componentConfigurationId);
        return new HstResolvedSiteMapItemDecorator(
                resolvedSiteMapItem,
                componentConfiguration
        );
    }
    private String deriveComponentConfigurationIdForSubject(final ResolvedSiteMapItem resolvedSiteMapItem,
                                                            final SubjectBean subject) {
        String subjectType = subject.getType();
        return getSiteMapItemHandlerConfiguration().getProperty(subjectType, resolvedSiteMapItem, String.class);
    }
}