/**
* Returns whether user is allowed to edit the entity if he created the entity
*
* @param <T> any object that extends TDPersistable
* @param tdUser logged in user
* @param t instance of T
* @return
*/
@SuppressWarnings("unchecked")
public static <T extends TDPersistable> boolean isAccessible(Long id, T t) {
boolean isAccessAllowed = true;
try {
TDUser tdUser = TDUserService.getUser();
if (id != null && null != tdUser && tdUser.getRole() == TDUserRole.ROLE_STANDARD) {
try {
T returnValT = (T) Datastore.get(KeyFactory.createKey(t.getClass().getSimpleName(), id));
if (returnValT != null) {
if (returnValT.getCreator().getId() != Long.valueOf(tdUser.getKey().getId())) {
isAccessAllowed = false;
}
}
} catch (JDOObjectNotFoundException jdoe) {
isAccessAllowed = false;
} catch (Exception e) {
isAccessAllowed = false;
}
}
return isAccessAllowed;
} catch (UserNotLoggedInException e) {
return false;
} catch (UserNotFoundException e) {
return false;
}
}
/**
* Searches for {@link Dish}es belonging to a {@link Restauarnt} using the supplied search terms
*
* @param queryWords terms to search with
* @param restKey {@link Key} to the {@link Restaurant} to search within
* @param maxResults maximum number of results to return
* @return {@link Collection} of {@link Dish}es
*/
@SuppressWarnings("unchecked")
public static Set<Dish> searchDishesByRestaurant(
String[] queryWords, Key restKey, int maxResults) {
List<Object> paramList = null;
String paramS = "";
String queryS = "";
final String queryString = "SELECT key FROM " + Dish.class.getName();
final Query q = PMF.get().getPersistenceManager().newQuery(queryString);
if (queryWords.length > 0) {
paramList = new ArrayList<Object>();
queryS += "restaurant == restParam";
paramS = Key.class.getName() + " restParam";
paramList.add(restKey);
for (int i = 0; i < queryWords.length; i++) {
queryS += " && searchTerms.contains(s" + i + ")";
paramS += ", String s" + i;
paramList.add(queryWords[i]);
}
q.setFilter(queryS);
q.declareParameters(paramS);
return Datastore.get(new HashSet<Key>((List<Key>) q.executeWithArray(paramList.toArray())));
}
return new HashSet<Dish>();
}
/**
* Get the latest {@link Review} written for a {@link Dish}.
*
* @param dishKey {@link Key} of the {@link Dish}
* @return the {@link Review}
*/
public static Review getLatestReviewByDish(Key dishKey) {
final Key reviewKey = getLatestReviewKeyByDish(dishKey);
if (null != reviewKey) {
return Datastore.get(getLatestReviewKeyByDish(dishKey));
} else {
return null;
}
}
/**
* Gets the latest {@link Review} submitted by a {@link TDUser}
*
* @param userKey {@link Key} of the {@link TDUser}
* @return the {@link Review}
*/
public static Review getLatestReviewByUser(Key userKey) {
final Key reviewKey = getLatestReviewKeyByUser(userKey);
if (null != reviewKey) {
return Datastore.get(reviewKey);
} else {
return null;
}
}
/**
* Get the first review written about a dish.
*
* @param dishKey {@link Key} of the {@link Dish}
* @return the {@link Review}
*/
public static Review getFirstReviewByDish(Key dishKey) {
final Key reviewKey = getFirstReviewKeyByDish(dishKey);
if (null != reviewKey) {
return (Review) Datastore.get(reviewKey);
} else {
return null;
}
}
/**
* Returns the most recent <code>numDishes</code> {@link Dish}es added
*
* @param numDishes number of {@link Dish}es to return
* @return {@link List} of {@link Dish}es ordered from newest to oldest
*/
@SuppressWarnings("unchecked")
public static Set<Dish> getNewestDishes(int numDishes) {
final String query = "SELECT key FROM " + Dish.class.getName();
Query q = PMF.get().getPersistenceManager().newQuery(query);
q.setOrdering("dateCreated desc");
q.setRange("0, " + numDishes);
return Datastore.get((Collection<Key>) q.execute());
}
/**
* Find {@link Source}s by name with a limit
*
* @param name - the source's name
* @param limit - limit results
* @return a {@link Set} of related {@link Source}s
*/
@SuppressWarnings("unchecked")
public static Set<Source> searchSourcebyName(String name, int limit) {
final String queryString = "SELECT key FROM " + Source.class.getName();
final Query q = PMF.get().getPersistenceManager().newQuery(queryString);
q.setFilter("name == :p");
q.setRange("0, " + limit);
return Datastore.get(new HashSet<Key>((List<Key>) q.execute(name.toLowerCase())));
}
/**
* Search tags by name and types
*
* @param stringTag name of a single tag
* @param types {@link Set} of tag types
* @param limit maximum number of results
* @return {@link Set} of {@link Tag}s
*/
@SuppressWarnings("unchecked")
public static Set<Tag> searchTagsByNameType(String stringTag, Set<Integer> types, int limit) {
final String queryString = "SELECT key FROM " + Tag.class.getName();
final Query q = PMF.get().getPersistenceManager().newQuery(queryString);
q.setFilter("searchTerms.contains(:searchTerm) && :typeParam.contains(type)");
q.setRange("0, " + limit);
return Datastore.get(
new HashSet<Key>((Collection<Key>) q.execute(stringTag.toLowerCase(), types)));
}
/**
* Gets the direction of the latest {@link Review} by a given {@link TDUser} for a given {@link
* Dish}.
*
* @param userKey {@link Key} of the {@link TDUser}
* @param dishKey {@link Key} of the {@link Dish}
* @return {@link Review#POSITIVE_DIRECTION}, {@link Review#NEGATIVE_DIRECTION}, or 0 if none
* found
*/
public static int getLatestUserVoteByDish(Key userKey, Key dishKey) {
final Key revKey = getLatestReviewKeyByUserDish(userKey, dishKey);
if (null != revKey) {
final Review review = Datastore.get(revKey);
if (null != review) {
return review.getDirection();
} else {
return 0;
}
} else {
return 0;
}
}
/**
* Gets the top <code>numUsers</code> sorted by most to least ratings.
*
* @param numUsers number of {@link TDUser}s to return
* @return {@link List} of {@link TDUser}s
*/
@SuppressWarnings("unchecked")
public static List<TDUser> getTopUsers(int numUsers) {
final String query = "SELECT key FROM " + TDUser.class.getName();
Query q = PMF.get().getPersistenceManager().newQuery(query);
q.setOrdering("numReviews desc");
q.setRange("0, " + numUsers);
final Set<TDUser> results = Datastore.get((Collection<Key>) q.execute());
final List<TDUser> toReturn = new ArrayList<TDUser>(results);
// Collections.sort(toReturn, )
return toReturn;
}
/**
* Gets the top <code>numDishes</code> {@link Dish}es ranked from most to least positive reviews
*
* @param numDishes number of {@link Dish}es to return
* @return {@link List} of {@link Dish}es
*/
@SuppressWarnings("unchecked")
public static List<Dish> getTopDishes(int numDishes) {
final String query = "SELECT key FROM " + Dish.class.getName();
Query q = PMF.get().getPersistenceManager().newQuery(query);
q.setOrdering("posReviews desc");
q.setRange("0," + numDishes);
final Set<Dish> results = Datastore.get((Collection<Key>) q.execute());
final List<Dish> toReturn = new ArrayList<Dish>(results);
Collections.sort(toReturn, new DishPosReviewsComparator());
return toReturn;
}
/**
* Gets the top <code>numRestaurantss</code> {@link Restaurant}s ranked from most to least
* positive reviews <br>
* <b>Note: this does not actually return the top X restaurants, just a random X restaurants!</b>
*
* @param numRestaurants number of {@link Restaurant}s to return
* @return {@link List} of {@link Restaurant}s
*/
@SuppressWarnings("unchecked")
public static List<Restaurant> getTopRestaurants(int numRestaurants) {
final String query = "SELECT key FROM " + Restaurant.class.getName();
Query q = PMF.get().getPersistenceManager().newQuery(query);
// TODO: return a query that actually chooses the X highest rated
// restaurants
// q.setOrdering("posReviews desc");
q.setRange("0," + numRestaurants);
final Set<Restaurant> results = Datastore.get((Collection<Key>) q.execute());
final List<Restaurant> toReturn = new ArrayList<Restaurant>(results);
Collections.sort(toReturn, new RestaurantPosReviewsComparator());
return toReturn;
}
/**
* Search through all {@link Tag}s given an array of {@link String} search terms
*
* @param queryWords array of {@link String} terms to search with
* @param maxResults maximum number of results
* @return list of Tags matching the search terms
*/
@SuppressWarnings("unchecked")
public static Set<Tag> searchTags(String[] queryWords, int maxResults) {
// TODO: can this be replaced by a generic searchItems somehow?
// Using a TDSearchable Interface would work
final String queryString = "SELECT key FROM " + Tag.class.getName();
final Query query = PMF.get().getPersistenceManager().newQuery(queryString);
query.setFilter("searchTerms.contains(:searchParam)");
query.setRange(0, maxResults);
if (queryWords.length > 0) {
return Datastore.get((Collection<Key>) query.execute(Arrays.asList(queryWords)));
}
return new HashSet<Tag>();
}
/**
* Returns a model.
*
* @param key the key
* @return a model
*/
public T get(Key key) {
return Datastore.get(modelClass, key);
}
/**
* Returns models.
*
* @param keys the keys
* @return models
*/
public List<T> get(List<Key> keys) {
return Datastore.get(modelClass, keys);
}
/**
* Gets all of the {@link Review}s created by a {@link TDUser}
*
* @param userKey {@link Key} of the {@link TDUser}
* @return {@link List} of {@link Review} objects sorted from newest to oldest
*/
public static Set<Review> getReviewsByUser(Key userKey) {
return Datastore.get(getReviewKeysByUser(userKey));
}
/**
* Gets all of the review objects for a dish
*
* @param dishKey {@link Key} of the {@link Dish}
* @return {@link List} of {@link Dish} objects sorted from newest to oldest
*/
public static Set<Review> getReviewsByDish(Key dishKey) {
return Datastore.get(getReviewKeysByDish(dishKey));
}
/**
* Gets all of the {@link Dish}es at a {@link Restaurant}
*
* @param restKey {@link Key} of the {@link Restaurant}
* @return {@link Collection} of {@link Dish} objects
*/
public static Set<Dish> getDishesByRestaurant(Key restKey) {
return Datastore.get(getDishKeysByRestaurant(restKey));
}
