private V getAndCacheValue(K key) throws TasteException { V value = retriever.get(key); if (value == null) { value = (V) NULL; } synchronized (cache) { cache.put(key, value); } return value; }
private V getAndCacheValue(K key) throws TasteException { V value = retriever.get(key); if (value == null) { value = (V) NULL; } synchronized (cache) { cache.put(key, value); } return value; }
private V getAndCacheValue(K key) throws TasteException { V value = retriever.get(key); if (value == null) { value = (V) NULL; } synchronized (cache) { cache.put(key, value); } return value; }
@Override public List<RecommendedItem> recommend(long userID, int howMany, IDRescorer rescorer) throws TasteException { Preconditions.checkArgument(howMany >= 1, "howMany must be at least 1"); synchronized (maxHowMany) { if (howMany > maxHowMany[0]) { maxHowMany[0] = howMany; } } // Special case, avoid caching an anonymous user if (userID == PlusAnonymousUserDataModel.TEMP_USER_ID) { return recommendationsRetriever.get(PlusAnonymousUserDataModel.TEMP_USER_ID).getItems(); } setCurrentRescorer(rescorer); Recommendations recommendations = recommendationCache.get(userID); if (recommendations.getItems().size() < howMany && !recommendations.isNoMoreRecommendableItems()) { clear(userID); recommendations = recommendationCache.get(userID); if (recommendations.getItems().size() < howMany) { recommendations.setNoMoreRecommendableItems(true); } } List<RecommendedItem> recommendedItems = recommendations.getItems(); return recommendedItems.size() > howMany ? recommendedItems.subList(0, howMany) : recommendedItems; }
@Override public List<RecommendedItem> recommend(long userID, int howMany,IDRescorer rescorer, boolean includeKnownItems) throws TasteException { Preconditions.checkArgument(howMany >= 1, "howMany must be at least 1"); synchronized (maxHowMany) { if (howMany > maxHowMany[0]) { maxHowMany[0] = howMany; } } // Special case, avoid caching an anonymous user if (userID == PlusAnonymousUserDataModel.TEMP_USER_ID) { return recommendationsRetriever.get(PlusAnonymousUserDataModel.TEMP_USER_ID).getItems(); } setCurrentRescorer(rescorer); setCurrentlyIncludeKnownItems(includeKnownItems); Recommendations recommendations = recommendationCache.get(userID); if (recommendations.getItems().size() < howMany && !recommendations.isNoMoreRecommendableItems()) { clear(userID); recommendations = recommendationCache.get(userID); if (recommendations.getItems().size() < howMany) { recommendations.setNoMoreRecommendableItems(true); } } List<RecommendedItem> recommendedItems = recommendations.getItems(); return recommendedItems.size() > howMany ? recommendedItems.subList(0, howMany) : recommendedItems; }
@Override public List<RecommendedItem> recommend(long userID, int howMany,IDRescorer rescorer, boolean includeKnownItems) throws TasteException { Preconditions.checkArgument(howMany >= 1, "howMany must be at least 1"); synchronized (maxHowMany) { if (howMany > maxHowMany[0]) { maxHowMany[0] = howMany; } } // Special case, avoid caching an anonymous user if (userID == PlusAnonymousUserDataModel.TEMP_USER_ID) { return recommendationsRetriever.get(PlusAnonymousUserDataModel.TEMP_USER_ID).getItems(); } setCurrentRescorer(rescorer); setCurrentlyIncludeKnownItems(includeKnownItems); Recommendations recommendations = recommendationCache.get(userID); if (recommendations.getItems().size() < howMany && !recommendations.isNoMoreRecommendableItems()) { clear(userID); recommendations = recommendationCache.get(userID); if (recommendations.getItems().size() < howMany) { recommendations.setNoMoreRecommendableItems(true); } } List<RecommendedItem> recommendedItems = recommendations.getItems(); return recommendedItems.size() > howMany ? recommendedItems.subList(0, howMany) : recommendedItems; }