@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException {
CharSequence pathInfo = request.getPathInfo();
if (pathInfo == null) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, "No path");
return;
}
Iterator<String> pathComponents = SLASH.split(pathInfo).iterator();
String userID;
List<String> itemIDsList;
try {
userID = pathComponents.next();
itemIDsList = Lists.newArrayList();
while (pathComponents.hasNext()) {
itemIDsList.add(pathComponents.next());
}
} catch (NoSuchElementException nsee) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, nsee.toString());
return;
}
String[] itemIDs = itemIDsList.toArray(new String[itemIDsList.size()]);
unescapeSlashHack(itemIDs);
OryxRecommender recommender = getRecommender();
try {
float[] estimates = recommender.estimatePreferences(userID, itemIDs);
output(request, response, estimates);
} catch (NotReadyException nre) {
response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, nre.toString());
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException {
CharSequence pathInfo = request.getPathInfo();
if (pathInfo == null) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, "No path");
return;
}
Iterator<String> pathComponents = SLASH.split(pathInfo).iterator();
long toItemID;
List<Long> itemIDsList = Lists.newArrayList();
try {
toItemID = Long.parseLong(pathComponents.next());
while (pathComponents.hasNext()) {
itemIDsList.add(Long.parseLong(pathComponents.next()));
}
} catch (NoSuchElementException nsee) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, nsee.toString());
return;
} catch (NumberFormatException nfe) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, nfe.toString());
return;
}
if (itemIDsList.isEmpty()) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, "No items");
return;
}
long[] itemIDs = new long[itemIDsList.size()];
for (int i = 0; i < itemIDs.length; i++) {
itemIDs[i] = itemIDsList.get(i);
}
MyrrixRecommender recommender = getRecommender();
try {
float[] similarities = recommender.similarityToItem(toItemID, itemIDs);
Writer out = response.getWriter();
for (float similarity : similarities) {
out.write(Float.toString(similarity));
out.write('\n');
}
} catch (NoSuchItemException nsie) {
response.sendError(HttpServletResponse.SC_NOT_FOUND, nsie.toString());
} catch (NotReadyException nre) {
response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, nre.toString());
} catch (TasteException te) {
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, te.toString());
getServletContext().log("Unexpected error in " + getClass().getSimpleName(), te);
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException {
CharSequence pathInfo = request.getPathInfo();
if (pathInfo == null) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, "No path");
return;
}
Iterator<String> pathComponents = SLASH.split(pathInfo).iterator();
String userID;
String itemID;
try {
userID = pathComponents.next();
itemID = pathComponents.next();
} catch (NoSuchElementException nsee) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, nsee.toString());
return;
}
if (pathComponents.hasNext()) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Path too long");
return;
}
userID = unescapeSlashHack(userID);
itemID = unescapeSlashHack(itemID);
OryxRecommender recommender = getRecommender();
try {
output(
request,
response,
recommender.recommendedBecause(userID, itemID, getNumResultsToFetch(request)));
} catch (NoSuchUserException nsue) {
response.sendError(HttpServletResponse.SC_NOT_FOUND, nsue.toString());
} catch (NoSuchItemException nsie) {
response.sendError(HttpServletResponse.SC_NOT_FOUND, nsie.toString());
} catch (NotReadyException nre) {
response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, nre.toString());
} catch (IllegalArgumentException iae) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, iae.toString());
} catch (UnsupportedOperationException uoe) {
response.sendError(HttpServletResponse.SC_BAD_REQUEST, uoe.toString());
}
}
