@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());
}
}
@SuppressWarnings({"unchecked"})
private String createURLInternal(Map paramValues, String encoding, boolean includeContextPath) {
if (encoding == null) encoding = "utf-8";
String contextPath = "";
if (includeContextPath) {
GrailsWebRequest webRequest = (GrailsWebRequest) RequestContextHolder.getRequestAttributes();
if (webRequest != null) {
contextPath = webRequest.getAttributes().getApplicationUri(webRequest.getCurrentRequest());
}
}
if (paramValues == null) paramValues = Collections.EMPTY_MAP;
StringBuilder uri = new StringBuilder(contextPath);
Set usedParams = new HashSet();
String[] tokens = urlData.getTokens();
int paramIndex = 0;
for (int i = 0; i < tokens.length; i++) {
String token = tokens[i];
if (i == tokens.length - 1 && urlData.hasOptionalExtension()) {
token += OPTIONAL_EXTENSION_WILDCARD;
}
Matcher m = OPTIONAL_EXTENSION_WILDCARD_PATTERN.matcher(token);
if (m.find()) {
if (token.startsWith(CAPTURED_WILDCARD)) {
ConstrainedProperty prop = constraints[paramIndex++];
String propName = prop.getPropertyName();
Object value = paramValues.get(propName);
usedParams.add(propName);
if (value != null) {
token = token.replaceFirst(DOUBLE_WILDCARD_PATTERN.pattern(), value.toString());
} else if (prop.isNullable()) {
break;
}
}
uri.append(SLASH);
ConstrainedProperty prop = constraints[paramIndex++];
String propName = prop.getPropertyName();
Object value = paramValues.get(propName);
usedParams.add(propName);
if (value != null) {
String ext = "." + value;
uri.append(
token
.replace(OPTIONAL_EXTENSION_WILDCARD + '?', ext)
.replace(OPTIONAL_EXTENSION_WILDCARD, ext));
} else {
uri.append(
token
.replace(OPTIONAL_EXTENSION_WILDCARD + '?', "")
.replace(OPTIONAL_EXTENSION_WILDCARD, ""));
}
continue;
}
if (token.endsWith("?")) {
token = token.substring(0, token.length() - 1);
}
m = DOUBLE_WILDCARD_PATTERN.matcher(token);
if (m.find()) {
StringBuffer buf = new StringBuffer();
do {
ConstrainedProperty prop = constraints[paramIndex++];
String propName = prop.getPropertyName();
Object value = paramValues.get(propName);
usedParams.add(propName);
if (value == null && !prop.isNullable()) {
throw new UrlMappingException(
"Unable to create URL for mapping ["
+ this
+ "] and parameters ["
+ paramValues
+ "]. Parameter ["
+ prop.getPropertyName()
+ "] is required, but was not specified!");
} else if (value == null) {
m.appendReplacement(buf, "");
} else {
m.appendReplacement(buf, Matcher.quoteReplacement(value.toString()));
}
} while (m.find());
m.appendTail(buf);
try {
String v = buf.toString();
if (v.indexOf(SLASH) > -1 && CAPTURED_DOUBLE_WILDCARD.equals(token)) {
// individually URL encode path segments
if (v.startsWith(SLASH)) {
// get rid of leading slash
v = v.substring(SLASH.length());
}
String[] segs = v.split(SLASH);
for (String segment : segs) {
uri.append(SLASH).append(encode(segment, encoding));
}
} else if (v.length() > 0) {
// original behavior
uri.append(SLASH).append(encode(v, encoding));
} else {
// Stop processing tokens once we hit an empty one.
break;
}
} catch (UnsupportedEncodingException e) {
throw new ControllerExecutionException(
"Error creating URL for parameters ["
+ paramValues
+ "], problem encoding URL part ["
+ buf
+ "]: "
+ e.getMessage(),
e);
}
} else {
uri.append(SLASH).append(token);
}
}
populateParameterList(paramValues, encoding, uri, usedParams);
if (LOG.isDebugEnabled()) {
LOG.debug(
"Created reverse URL mapping ["
+ uri.toString()
+ "] for parameters ["
+ paramValues
+ "]");
}
return uri.toString();
}
