public static void injectIntoFields()

in tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/internal/util/InternalUtils.java [296:386]
70 lines of code
12 McCabe index (conditional complexity)

    public static void injectIntoFields(final Object object, final ObjectLocator locator,
                                        final InjectionResources resources, OperationTracker tracker)
    {
        Class clazz = object.getClass();

        while (clazz != Object.class)
        {
            Field[] fields = clazz.getDeclaredFields();

            for (final Field f : fields)
            {
                // Ignore all static and final fields.

                int fieldModifiers = f.getModifiers();

                if (Modifier.isStatic(fieldModifiers) || Modifier.isFinal(fieldModifiers))
                    continue;

                final AnnotationProvider ap = new AnnotationProvider()
                {
                    @Override
                    public <T extends Annotation> T getAnnotation(Class<T> annotationClass)
                    {
                        return f.getAnnotation(annotationClass);
                    }
                };

                String description = String.format("Calculating possible injection value for field %s.%s (%s)",
                        clazz.getName(), f.getName(),
                        PlasticUtils.toTypeName(f.getType()));

                tracker.run(description, new Runnable()
                {
                    @Override
                    public void run()
                    {
                        final Class<?> fieldType = f.getType();

                        InjectService is = ap.getAnnotation(InjectService.class);
                        if (is != null)
                        {
                            inject(object, f, locator.getService(is.value(), fieldType));
                            return;
                        }

                        if (ap.getAnnotation(Inject.class) != null || ap.getAnnotation(InjectResource.class) != null)
                        {
                            Object value = resources.findResource(fieldType, f.getGenericType());

                            if (value != null)
                            {
                                inject(object, f, value);
                                return;
                            }

                            inject(object, f, locator.getObject(fieldType, ap));
                            return;
                        }

                        if (ap.getAnnotation(javax.inject.Inject.class) != null)
                        {
                            Named named = ap.getAnnotation(Named.class);

                            if (named == null)
                            {
                                Object value = resources.findResource(fieldType, f.getGenericType());

                                if (value != null)
                                {
                                    inject(object, f, value);
                                    return;
                                }

                                inject(object, f, locator.getObject(fieldType, ap));
                            } else
                            {
                                inject(object, f, locator.getService(named.value(), fieldType));
                            }

                            return;
                        }

                        // Ignore fields that do not have the necessary annotation.

                    }
                });
            }

            clazz = clazz.getSuperclass();
        }
    }