public void doFilter()

in cmssite/src/main/java/org/apache/ofbiz/cmssite/multisite/WebSiteFilter.java [65:145]
72 lines of code
20 McCabe index (conditional complexity)

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        HttpSession session = httpRequest.getSession();

        String webSiteId = (String) mConfig.getServletContext().getAttribute("webSiteId");
        String pathInfo = httpRequest.getPathInfo();
        // get the WebSite id segment, cheat here and use existing logic
        String webSiteAlias = RequestHandler.getRequestUri(pathInfo);
        Delegator delegator = (Delegator) httpRequest.getSession().getServletContext().getAttribute("delegator");
        LocalDispatcher dispatcher = (LocalDispatcher) request.getAttribute("dispatcher");

        setWebContextObjects(httpRequest, httpResponse, delegator, dispatcher);

        GenericValue webSite = null;
        try {
            if (UtilValidate.isNotEmpty(webSiteAlias)) {
                webSite = EntityQuery.use(delegator).from("WebSite").where("hostedPathAlias", webSiteAlias).cache().queryFirst();
            }
            if (UtilValidate.isEmpty(webSite)) {
                webSite = EntityQuery.use(delegator).from("WebSite").where("isDefault", "Y").cache().queryFirst();
            }
        } catch (GenericEntityException e) {
            Debug.logError(e, MODULE);
        }
        if (webSite != null) {
            webSiteId = webSite.getString("webSiteId");
            GenericValue productStore = null;
            try {
                productStore = webSite.getRelatedOne("ProductStore", false);
            } catch (GenericEntityException e) {
                Debug.logError(e, MODULE);
            }

            String newLocale = request.getParameter("newLocale");
            if (productStore != null && newLocale == null && session.getAttribute("locale") == null) {
                newLocale = productStore.getString("defaultLocaleString");
            } else if (newLocale == null && session.getAttribute("locale") != null) {
                newLocale = session.getAttribute("locale").toString();
            }

            if (newLocale == null) {
                newLocale = UtilHttp.getLocale(httpRequest).toString();
            }
            // If the webSiteId has changed then invalidate the existing session
            if (!webSiteId.equals(session.getAttribute("webSiteId"))) {
                ShoppingCart cart = (ShoppingCart) session.getAttribute("shoppingCart");
                if (cart != null && !(webSite.getString("productStoreId").equals(cart.getProductStoreId()))) {
                    // clearing cart items from previous store
                    cart.clear();
                    // Put product Store for this webSite in cart
                    cart.setProductStoreId(webSite.getString("productStoreId"));
                }
                if (cart != null && productStore != null) {
                    Locale localeObj = UtilMisc.parseLocale(newLocale);
                    cart.setLocale(localeObj);
                    try {
                        cart.setCurrency(dispatcher, productStore.getString("defaultCurrencyUomId"));
                    } catch (CartItemModifyException e) {
                        Debug.logError(e, MODULE);
                    }
                }
                session.removeAttribute("webSiteId");
                session.setAttribute("webSiteId", webSiteId);
                session.setAttribute("displayMaintenancePage", webSite.getString("displayMaintenancePage"));
            }
            request.setAttribute("webSiteId", webSiteId);
            session.setAttribute("displayMaintenancePage", webSite.getString("displayMaintenancePage"));
            if (UtilValidate.isEmpty(webSite.getString("hostedPathAlias"))) {
                request.setAttribute("removePathAlias", false);
            } else {
                request.setAttribute("removePathAlias", true);
            }
            httpRequest = new MultiSiteRequestWrapper(httpRequest);
            UtilHttp.setLocale(httpRequest, newLocale);
        }
        if (webSiteId != null) {
            request.setAttribute("webSiteId", webSiteId);
        }
        chain.doFilter(httpRequest, response);
    }