private void injectFields()

in src/main/java/org/apache/sling/scripting/java/impl/ServletWrapper.java [185:233]
48 lines of code
13 McCabe index (conditional complexity)

    private void injectFields(final Servlet servlet) {
        for (Field field : servlet.getClass().getDeclaredFields()) {
            if (field.isAnnotationPresent(Inject.class)) {
                field.setAccessible(true);
                try {
                    Type type = field.getGenericType();
                    if (type instanceof Class) {
                        Class<?> injectedClass = (Class<?>) type;
                        if (injectedClass.isInstance(scriptHelper)) {
                            field.set(servlet, scriptHelper);
                        } else if (injectedClass.isArray()) {
                            Object[] services = scriptHelper.getServices(injectedClass.getComponentType(), null);
                            Object arr = Array.newInstance(injectedClass.getComponentType(), services.length);
                            for (int i = 0; i < services.length; i++) {
                                Array.set(arr, i, services[i]);
                            }
                            field.set(servlet, arr);
                        } else {
                            field.set(servlet, scriptHelper.getService(injectedClass));
                        }
                    } else if (type instanceof ParameterizedType) {
                        ParameterizedType ptype = (ParameterizedType) type;
                        if (ptype.getActualTypeArguments().length != 1) {
                            logger.warn("Field {} of {} has more than one type parameter.", field.getName(), sourcePath);
                            continue;
                        }
                        Class<?> collectionType = (Class<?>) ptype.getRawType();
                        if (!(collectionType.equals(Collection.class) ||
                                collectionType.equals(List.class))) {
                            logger.warn("Field {} of {} was not an injectable collection type.", field.getName(), sourcePath);
                            continue;
                        }

                        Class<?> serviceType = (Class<?>) ptype.getActualTypeArguments()[0];
                        Object[] services = scriptHelper.getServices(serviceType, null);
                        field.set(servlet, Arrays.asList(services));
                    } else {
                        logger.warn("Field {} of {} was not an injectable type.", field.getName(), sourcePath);
                    }
                } catch (final IllegalArgumentException e) {
                    logger.error(String.format("Unable to inject into field %s of %s.", field.getName(), sourcePath), e);
                } catch (final IllegalAccessException e) {
                    logger.error(String.format("Unable to inject into field %s of %s.", field.getName(), sourcePath), e);
                } finally {
                    field.setAccessible(false);
                }
            }
        }
    }