CacheService.java

@Named
@RequestScoped
public class CacheService implements Serializable {

    //was an abstract class

    @Resource(lookup = "java:jboss/infinispan/container/appcache")
    EmbeddedCacheManager cacheManager;

    Cache<Integer, Ad> cache;

    @Inject
    AdService adService;

    List<Ad> adList;

    static final Logger log = Logger.getLogger(CacheService.class);

    @PostConstruct
    public void init() {
        cache = cacheManager.getCache("pagination", true);
        completeList();
    }

    public void refreshCache() {
        adList = adService.getAll();
        cache.put(-1, new Ad()); // Goofy entrance, just to check if it has expired.
        for (Ad ad : adList) {
            cache.put(ad.getId(), ad);
        }
    }

    public void completeList() {
        if (!cache.containsKey(-1)) {
            log.info("cache has expired");
            refreshCache();
        }
        if (cache.containsKey(-1)) cache.remove(-1);
        adList = new ArrayList<>(cache.values());
    }


    public List<Ad> getAdList() {
        return adList;
    }

    public void setAdList(List<Ad> adList) {
        this.adList = adList;
    }
}