private void registerAdapterFactory()

in src/main/java/org/apache/sling/adapter/internal/AdapterManagerImpl.java [209:258]
40 lines of code
13 McCabe index (conditional complexity)

    private void registerAdapterFactory(final AdapterFactory factory, final ServiceReference<AdapterFactory> reference) {
        final Converter converter = Converters.standardConverter();
        final String[] adaptables = converter.convert(reference.getProperty(ADAPTABLE_CLASSES)).to(String[].class);
        final String[] adapters = converter.convert(reference.getProperty(ADAPTER_CLASSES)).to(String[].class);
        final boolean allowedInPrivatePackage = converter.convert(reference.getProperty(ALLOWED_IN_PRIVATE)).defaultValue(false).to(Boolean.class);

        if (adaptables == null || adaptables.length == 0 || adapters == null || adapters.length == 0) {
            return;
        }

        for (String clazz : adaptables) {
            if (!allowedInPrivatePackage && !checkPackage(packageAdmin, clazz)) {
                log.warn("Adaptable class {} in factory service {} is not in an exported package.", clazz, reference.getProperty(Constants.SERVICE_ID));
            }
        }

        for (String clazz : adapters) {
            if (!allowedInPrivatePackage && !checkPackage(packageAdmin, clazz)) {
                log.warn("Adapter class {} in factory service {} is not in an exported package.", clazz, reference.getProperty(Constants.SERVICE_ID));
            }
        }

        final AdapterFactoryDescriptor factoryDesc = new AdapterFactoryDescriptor(factory, adapters, adaptables);

        for (final String adaptable : adaptables) {
            AdapterFactoryDescriptorMap adfMap = null;
            synchronized ( this.descriptors ) {
                adfMap = descriptors.computeIfAbsent(adaptable, key -> new AdapterFactoryDescriptorMap());
            }
            synchronized ( adfMap ) {
                adfMap.put(reference, factoryDesc);
            }
        }

        // clear the factory cache to force rebuild on next access
        this.factoryCache.clear();

        // register adaption
        final Dictionary<String, Object> props = new Hashtable<>();
        props.put(SlingConstants.PROPERTY_ADAPTABLE_CLASSES, adaptables);
        props.put(SlingConstants.PROPERTY_ADAPTER_CLASSES, adapters);

        factoryDesc.setAdaption(reference.getBundle().getBundleContext().registerService(
                Adaption.class, AdaptionImpl.INSTANCE, props));
        if (log.isDebugEnabled()) {
            log.debug("Registered service {} with {} : {} and {} : {}", new Object[] { Adaption.class.getName(),
                    SlingConstants.PROPERTY_ADAPTABLE_CLASSES, Arrays.toString(adaptables),
                    SlingConstants.PROPERTY_ADAPTER_CLASSES, Arrays.toString(adapters) });
        }
    }