protected void vetoDefaultImplementation()

in alternative-modules/alternative-implementation-module/src/main/java/org/apache/myfaces/extensions/cdi/alternative/implementation/impl/AlternativeImplementationExtension.java [41:101]

48 lines of code
13 McCabe index (conditional complexity)


    protected <T> void vetoDefaultImplementation(@Observes ProcessAnnotatedType<T> processAnnotatedType)
    {
        Class<?> beanClass = processAnnotatedType.getAnnotatedType().getJavaClass();

        //only filter default implementations of codi which are beans and don't filter a
        //AlternativeImplementation provided by e.g. the codi alternative config module
        if (!beanClass.getName().startsWith("org.apache.myfaces.extensions.cdi.") ||
                beanClass.isAnnotationPresent(AlternativeImplementation.class) ||
                beanClass.isAnnotationPresent(Specializes.class) ||
                (beanClass.isAnnotationPresent(Typed.class) &&
                        beanClass.getAnnotation(Typed.class).value().length == 0))
        {
            return;
        }

        if (beanClass.isInterface() || Modifier.isAbstract(beanClass.getModifiers()))
        {
            return;
        }

        final boolean configClassMode = CodiConfig.class.isAssignableFrom(beanClass);

        List<Class> spiClassCandidates = findSpiClassCandidates(beanClass);

        List customImplementations = new ArrayList();

        Object customImplementation = null;

        for (Class spiClass : spiClassCandidates)
        {
            if (Serializable.class.isAssignableFrom(beanClass))
            {
                if(!CodiConfig.class.getName().equals(spiClass.getName()))
                {
                    customImplementation = CodiUtils.lookupFromEnvironment(spiClass,
                            new ConfiguredClassAggregatable(spiClass, customImplementations, configClassMode));
                }
                else
                {
                    customImplementation = CodiUtils.lookupFromEnvironment(spiClass,
                            new ConfiguredClassAggregatable(beanClass, customImplementations, configClassMode));
                }
            }
            else
            {
                //noinspection unchecked
                customImplementation = tryToLoadCustomClassViaServiceLoader(spiClass);
            }

            if (customImplementation != null)
            {
                break;
            }
        }

        if (customImplementation != null)
        {
            //veto default implementation of codi
            processAnnotatedType.veto();
        }
    }