public void render()

in src/main/java/org/apache/sling/servlets/get/impl/helpers/JsonRenderer.java [71:144]
62 lines of code
12 McCabe index (conditional complexity)

    public void render(SlingHttpServletRequest req,
            SlingHttpServletResponse resp) throws IOException {
        // Access and check our data
        final Resource r = req.getResource();
        if (ResourceUtil.isNonExistingResource(r)) {
            throw new ResourceNotFoundException("No data to render.");
        }

        int maxRecursionLevels = 0;
        try {
            maxRecursionLevels = getMaxRecursionLevel(req);
        } catch(IllegalArgumentException iae) {
            resp.sendError(HttpServletResponse.SC_BAD_REQUEST, iae.getMessage());
            return;
        }

        resp.setContentType(req.getResponseContentType());
        resp.setCharacterEncoding("UTF-8");

        // We check the tree to see if the nr of nodes isn't bigger than the allowed nr.
        boolean allowDump = true;
        int allowedLevel = 0;
        final boolean tidy = isTidy(req);
        final boolean harray = hasSelector(req, HARRAY);
        ResourceTraversor traversor = null;
        try {
            traversor = new ResourceTraversor(maxRecursionLevels, maximumResults, r, ecmaSupport);
            allowedLevel = traversor.collectResources();
            if ( allowedLevel != -1 ) {
                allowDump = false;
            }
        } catch (final Exception e) {
            reportException(e);
        }
        try {
            // Dump the resource if we can
            if (allowDump) {
                if (tidy || harray) {
                    final JsonToText.Options opt = renderer.options()
                            .withIndent(tidy ? INDENT_SPACES : 0)
                            .withArraysForChildren(harray);
                    resp.getWriter().write(renderer.prettyPrint(traversor.getJSONObject(), opt));
                } else {
                    // If no rendering options, use the plain toString() method, for
                    // backwards compatibility. Output might be slightly different
                    // with prettyPrint and no options
                    StringWriter writer = new StringWriter();
                    try (JsonGenerator json = Json.createGenerator(writer)){
                        json.write(traversor.getJSONObject());
                    }
                    resp.getWriter().write(writer.toString());
                }

            } else {
                // We are not allowed to do the dump.
                // Send a 300 
                String tidyUrl = (tidy) ? "tidy." : "";
                resp.setStatus(HttpServletResponse.SC_MULTIPLE_CHOICES);
                StringWriter writer = new StringWriter();
                try (JsonGenerator json = Json.createGenerator(writer)) {
                    json.writeStartArray();
                    while (allowedLevel >= 0) {
                        json.write(
                                r.getResourceMetadata().getResolutionPath() + "." + tidyUrl + allowedLevel + ".json");
                        allowedLevel--;
                    }
                    json.writeEnd();
                }
                resp.getWriter().write(writer.toString());
            }
        } catch (Exception je) {
            reportException(je);
        }
    }