public void recommendations(Map<String, List<String>> requestProperties) {
Recommendations _recommendations = new Recommendations();
UnitofInteraction talking = new UnitofInteraction(requestProperties);
talking.startThread();
// Add the "--groupname" preffix to the given command text so the
// _getArguments method puts the groupname under the "--groupname" key.
if (requestProperties.get("text") != null) {
if (requestProperties.get("text").get(0) != null) {
requestProperties.get("text").set(0, "--groupname " + requestProperties.get("text").get(0));
}
}
Map<String, String> result = null;
try {
result = _recommendations.Run(GeneralStuff._getArguments(requestProperties));
} catch (MessagingException ex) {
result.put("text", result.get("text") + "`" + ex.getMessage() + "`");
talking.notifyError();
} catch (IOException ex) {
Logger.getLogger(Commands.class.getName()).log(Level.SEVERE, null, ex);
talking.notifyError();
} catch (SQLException ex) {
Logger.getLogger(Commands.class.getName()).log(Level.SEVERE, null, ex);
talking.notifyError();
} catch (ClassNotFoundException ex) {
Logger.getLogger(Commands.class.getName()).log(Level.SEVERE, null, ex);
talking.notifyError();
} finally {
talking.stopThread();
}
String text = result.get("text");
requestProperties.put("text", Arrays.asList(new String[] {text}));
System.out.println(text);
try {
GeneralStuff._sendMessage(GeneralStuff._forgeMessage(requestProperties));
} catch (IOException ex) {
Logger.getLogger(Commands.class.getName()).log(Level.SEVERE, null, ex);
}
}
@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;
}
