protected String dispatch()

in src/main/java/org/apache/sling/scripting/thymeleaf/internal/processor/SlingIncludeAttributeTagProcessor.java [138:191]
44 lines of code
12 McCabe index (conditional complexity)

    protected String dispatch(Resource resource, String path, final SlingHttpServletRequest slingHttpServletRequest, final SlingHttpServletResponse slingHttpServletResponse, final RequestDispatcherOptions requestDispatcherOptions) {

        // ensure the path (if set) is absolute and normalized
        if (path != null) {
            if (!path.startsWith("/")) {
                path = slingHttpServletRequest.getResource().getPath() + "/" + path;
            }
            path = ResourceUtil.normalize(path);
        }

        // check the resource
        if (resource == null) {
            if (path == null) {
                // neither resource nor path is defined, use current resource
                resource = slingHttpServletRequest.getResource();
            } else {
                // check whether the path (would) resolve, else SyntheticRes.
                final String resourceType = requestDispatcherOptions.getForceResourceType();
                final Resource tmp = slingHttpServletRequest.getResourceResolver().resolve(path);
                if (tmp == null && resourceType != null) {
                    resource = new SyntheticResource(slingHttpServletRequest.getResourceResolver(), path, resourceType); // TODO DispatcherSyntheticResource?
                    // remove resource type overwrite as synthetic resource is correctly typed as requested
                    requestDispatcherOptions.remove(RequestDispatcherOptions.OPT_FORCE_RESOURCE_TYPE);
                }
            }
        }

        try {
            // create a dispatcher for the resource or path
            final RequestDispatcher dispatcher;
            if (resource != null) {
                dispatcher = slingHttpServletRequest.getRequestDispatcher(resource, requestDispatcherOptions);
            } else {
                dispatcher = slingHttpServletRequest.getRequestDispatcher(path, requestDispatcherOptions);
            }

            if (dispatcher != null) {
                try {
                    final CaptureResponseWrapper wrapper = new CaptureResponseWrapper(slingHttpServletResponse);
                    dispatcher.include(slingHttpServletRequest, wrapper);
                    if (!wrapper.isBinaryResponse()) {
                        return wrapper.getCapturedCharacterResponse();
                    }
                } catch (ServletException e) {
                    logger.error(e.getMessage(), e);
                }
            } else {
                logger.error("no request dispatcher: unable to include {}/'{}'", resource, path);
            }
        } catch (IOException e) {
            logger.error(e.getMessage(), e);
        }
        return null;
    }