KindService with static cache

KindService.java

public class KindService extends BaseCacheService {

	public static final String LIST = "/browse/kinds/list";

	private Logger log = LoggerFactory.getLogger(KindService.class);
	static List<Kind> cachedList;

	@Inject
	public KindService(CacheWrapper<String, Object> cache,
					   HttpExecutor httpExecutor,
					   @Named("webservice.endpoint") String hostName) {
		super(cache, hostName, httpExecutor);
	}

	public Response<List<Kind>> list(final Integer libraryId) {
		Response<List<Kind>> response = new Response<List<Kind>>();

		final String cacheKey = getKindsCacheKey(libraryId);

		cachedList = (List<Kind>) cache.get(cacheKey);

		if (cachedList != null) {
			response.setResults(cachedList);
			return response;
		} else {
			URIBuilder builder = httpExecutor.createUriBuilder(hostName).setPath(LIST);
			if (libraryId != null) builder.addParameter("libraryId", libraryId.toString());

			Document document = httpExecutor.executeGet(builder);

			response = MessageParser.getResponse(document.getDocumentElement());
			if (response.getErrors() == null) {
				final Element body = MessageParser.getBody("kinds", document);
				final List<Kind> items = KindParser.parse(body);
				response.setResults(items);

				// update the cache
				cache.put(cacheKey, items);
				log.debug("fetched cached kinds list");
			}

			return response;
		}
	}

	public Response<Kind> findKindForName(final String kindName, final Integer libraryId) {
		Response<Kind> response = new Response<Kind>();

		final String cacheKey = getKindsCacheKey(libraryId);

		cachedList = (List<Kind>) cache.get(cacheKey);

		// if we don't the kinds cached, we need to make a web service call...
		if (cachedList == null) {
			cachedList = list(libraryId).getResults();
		}

		for (Kind kind : cachedList) {
			if (kind.getName().toUpperCase().equals(kindName.toUpperCase())) {
				response.setResults(kind);
				break;
			}
		}

		return response;
	}
}