protected AsyncResponseImpl checkFutureResponse()

in jax-rs.whiteboard/src/main/java/org/apache/aries/jax/rs/whiteboard/internal/cxf/PromiseAwareJAXRSInvoker.java [35:54]

• 15 lines of code
• 5 McCabe index (conditional complexity)

    protected AsyncResponseImpl checkFutureResponse(Message inMessage, Object result) {
        if (inMessage == null || result == null) {
            return null;
        }

        // Fast path - do they share our view of the Promise
        if (result instanceof Promise) {
            return handlePromise(inMessage, (Promise<?>) result);
        } 
        
        // Slower check, is it a Promise?
        final Class<?> clazz = result.getClass();
        if (promises.computeIfAbsent(clazz, type -> Arrays.stream(type.getInterfaces())
                .map(Class::getName)
                .anyMatch("org.osgi.util.promise.Promise"::equals))) {
            return handlePromiseFromAnotherClassSpace(inMessage, result, clazz);
        }
        
        return super.checkFutureResponse(inMessage, result);
    }