Example usage for org.json JSONObject isNull

Introduction

In this page you can find the example usage for org.json JSONObject isNull.

Prototype

public boolean isNull(String key) 

Source Link

Document

Determine if the value associated with the key is null or if there is no value.

Usage

From source file:menusearch.json.JSONProcessor.java

/**
    *//from   ww w.j  a v  a2s  .  com
    * @param JSON string: requires the JSON string of the parameters the user enter for the search
    * @return RecipeSummaryList: a RecipeSummaryList where it contains information about the recipes that matches the search the user made
    * @throws java.io.IOException
    */
public static RecipeSummaryList parseRecipeMatches(String results) throws IOException {
    CourseList courseList = new CourseList();
    RecipeSummaryList list = new RecipeSummaryList();
    JSONTokener tokenizer = new JSONTokener(results);
    JSONObject resultList = new JSONObject(tokenizer);
    JSONArray matches = resultList.getJSONArray("matches");
    for (int i = 0; i < matches.length(); i++) {
        RecipeSummary r = new RecipeSummary();
        JSONObject currentRecipe = matches.getJSONObject(i);
        JSONObject imageUrls = currentRecipe.getJSONObject("imageUrlsBySize");
        String link = "90";
        String number = imageUrls.getString(link);
        r.setImageUrlsBySize(number);

        String source = (String) currentRecipe.getString("sourceDisplayName");
        r.setSourceDisplayName(source);

        JSONArray listOfIngredients = currentRecipe.getJSONArray("ingredients");
        for (int n = 0; n < listOfIngredients.length(); n++) {
            String currentIngredients = listOfIngredients.getString(n);
            r.ingredients.add(currentIngredients);
        }

        String id = (String) currentRecipe.getString("id");
        r.setId(id);

        String recipe = (String) currentRecipe.get("recipeName");
        r.setRecipeName(recipe);

        JSONArray smallImage = currentRecipe.getJSONArray("smallImageUrls");
        for (int l = 0; l < smallImage.length(); l++) {
            String currentUrl = (String) smallImage.get(l);
            r.setSmallImageUrls(currentUrl);
        }
        int timeInSeconds = (int) currentRecipe.getInt("totalTimeInSeconds");
        r.setTotalTimeInSeconds(timeInSeconds);

        String a = "attributes";
        String c = "course";
        if (currentRecipe.has(a)) {
            JSONObject currentAttributes = currentRecipe.getJSONObject(a);
            if (currentAttributes.has(c)) {
                for (int j = 0; j < currentAttributes.getJSONArray(c).length(); j++) {
                    String course = currentAttributes.getJSONArray(c).getString(j);
                    courseList.add(course);
                }
                r.setCourses(courseList);
            }
        }

        CuisineList cuisineList = new CuisineList();

        if (currentRecipe.has(a)) {
            JSONObject currentAttributes = currentRecipe.getJSONObject(a);
            if (currentAttributes.has("cuisine")) {
                for (int j = 0; j < currentAttributes.getJSONArray("cuisine").length(); j++) {
                    String currentCuisine = currentAttributes.getJSONArray("cuisine").getString(j);
                    cuisineList.add(currentCuisine);
                }
                r.setCusines(cuisineList);
            }
        }

        String f = "flavors";
        JSONObject currentFlavors;
        if (currentRecipe.has(f) == true) {

            if (currentRecipe.isNull(f) == false) {
                currentFlavors = currentRecipe.getJSONObject(f);
                double saltyRating = currentFlavors.getDouble("salty");
                double sourRating = currentFlavors.getDouble("sour");
                double sweetRating = currentFlavors.getDouble("sweet");
                double bitterRating = currentFlavors.getDouble("bitter");
                double meatyRating = currentFlavors.getDouble("meaty");
                double piguantRating = currentFlavors.getDouble("piquant");
                r.flavors.setSalty(saltyRating);
                r.flavors.setSour(sourRating);
                r.flavors.setSweet(sweetRating);
                r.flavors.setBitter(bitterRating);
                r.flavors.setMeaty(meatyRating);
                r.flavors.setPiquant(piguantRating);
            }
            if (currentRecipe.get(f) == null) {
                r.flavors = null;
            }
            if (currentRecipe.get(f) == null)
                r.flavors = null;
        }

        double rate = currentRecipe.getInt("rating");
        r.setRating(rate);

        list.matches.add(i, r);

    }

    return list;

}

---

From source file:me.mast3rplan.phantombot.cache.UsernameCache.java

public String resolve(String username, Map<String, String> tags) {
    String lusername = username.toLowerCase();

    if (cache.containsKey(lusername)) {
        return cache.get(lusername);
    } else {//  w ww  . j a v  a2s .  co m
        if (tags.containsKey("display-name") && tags.get("display-name").equalsIgnoreCase(lusername)) {
            cache.put(lusername, tags.get("display-name"));

            if (PhantomBot.enableDebugging) {
                com.gmt2001.Console.out
                        .println(">>UsernameCache detected using v3: " + tags.get("display-name"));
            }

            return tags.get("display-name");
        }

        if (username.equalsIgnoreCase("jtv") || username.equalsIgnoreCase("twitchnotify")
                || new Date().before(timeoutExpire)) {
            return username;
        }

        try {
            JSONObject user = TwitchAPIv3.instance().GetUser(lusername);

            if (user.getBoolean("_success")) {
                if (user.getInt("_http") == 200) {
                    String displayName = user.getString("display_name");
                    cache.put(lusername, displayName);

                    return displayName;
                } else {
                    try {
                        throw new Exception("[HTTPErrorException] HTTP " + user.getInt("status") + " "
                                + user.getString("error") + ". req=" + user.getString("_type") + " "
                                + user.getString("_url") + " " + user.getString("_post") + "   "
                                + (user.has("message") && !user.isNull("message")
                                        ? "message=" + user.getString("message")
                                        : "content=" + user.getString("_content")));
                    } catch (Exception e) {
                        com.gmt2001.Console.out.println(
                                "UsernameCache.updateCache>>Failed to get username: " + e.getMessage());
                        com.gmt2001.Console.err.logStackTrace(e);

                        return username;
                    }
                }
            } else {
                if (user.getString("_exception").equalsIgnoreCase("SocketTimeoutException")
                        || user.getString("_exception").equalsIgnoreCase("IOException")) {
                    Calendar c = Calendar.getInstance();

                    if (lastFail.after(new Date())) {
                        numfail++;
                    } else {
                        numfail = 1;
                    }

                    c.add(Calendar.MINUTE, 1);

                    lastFail = c.getTime();

                    if (numfail >= 5) {
                        timeoutExpire = c.getTime();
                    }
                }

                return username;
            }
        } catch (Exception e) {
            com.gmt2001.Console.err.printStackTrace(e);
            return username;
        }
    }
}

---

From source file:com.wlcg.aroundme.cc.weather.YahooWeatherProvider.java

private LocationResult parsePlace(JSONObject place) throws JSONException {
    LocationResult result = new LocationResult();
    JSONObject country = place.getJSONObject("country");

    result.id = place.getString("woeid");
    result.country = country.getString("content");
    result.countryId = country.getString("code");
    if (!place.isNull("postal")) {
        result.postal = place.getJSONObject("postal").getString("content");
    }/*from  ww  w .ja  v  a  2 s.  c om*/

    for (String name : LOCALITY_NAMES) {
        if (!place.isNull(name)) {
            result.city = place.getJSONObject(name).getString("content");
            break;
        }
    }

    if (Log.isLoggable(TAG, Log.VERBOSE)) {
        Log.v(TAG, "JSON data " + place.toString() + " -> id=" + result.id + ", city=" + result.city
                + ", country=" + result.countryId);
    }

    if (result.id == null || result.city == null || result.countryId == null) {
        return null;
    }

    return result;
}

---

From source file:edu.mit.mobile.android.locast.data.JsonSyncableItem.java

/**
 * Given a JSON item and a sync map, create a ContentValues map to be inserted into the DB.
 *
 * @param context/*from  w  w w.  j  ava 2s.c om*/
 * @param localItem will be null if item is new to mobile. If it's been sync'd before, will point to local entry.
 * @param item incoming JSON item.
 * @param mySyncMap A mapping between the JSON object and the content values.
 * @return new ContentValues, ready to be inserted into the database.
 * @throws JSONException
 * @throws IOException
 * @throws NetworkProtocolException
 */
public final static ContentValues fromJSON(Context context, Uri localItem, JSONObject item, SyncMap mySyncMap)
        throws JSONException, IOException, NetworkProtocolException {
    final ContentValues cv = new ContentValues();

    for (final String propName : mySyncMap.keySet()) {
        final SyncItem map = mySyncMap.get(propName);
        if (!map.isDirection(SyncItem.SYNC_FROM)) {
            continue;
        }
        if (map.isOptional() && (!item.has(map.remoteKey) || item.isNull(map.remoteKey))) {
            continue;
        }
        final ContentValues cv2 = map.fromJSON(context, localItem, item, propName);
        if (cv2 != null) {
            cv.putAll(cv2);
        }

    }
    return cv;
}

---

From source file:ca.nrc.cadc.xml.JsonInputter.java

public Document input(final String json) throws JSONException {
    JSONObject rootJson = new JSONObject(json);
    List<String> keys = Arrays.asList(JSONObject.getNames(rootJson));
    List<Namespace> namespaces = new ArrayList<Namespace>();
    Namespace namespace = getNamespace(namespaces, rootJson, keys);

    String rootKey = null;/*from   ww  w.j a v a2 s .c  o  m*/
    List<Attribute> attributes = new ArrayList<Attribute>();
    for (String key : keys) {
        if (!key.startsWith("@xmlns")) {
            if (key.startsWith("@")) {
                String value;
                if (rootJson.isNull(key)) {
                    value = "";
                } else {
                    value = getStringValue(rootJson.get(key));
                }
                attributes.add(new Attribute(key.substring(1), value));
            } else {
                // DOM can only have one root element.
                if (rootKey != null) {
                    throw new IllegalStateException("Found multiple root entries");
                }
                rootKey = key;
            }
        }
    }

    Element rootElement = new Element(rootKey, namespace);
    for (Attribute attribute : attributes) {
        rootElement.setAttribute(attribute);
    }

    Object value = rootJson.get(rootKey);
    processObject(rootKey, value, rootElement, namespace, namespaces);

    Document document = new Document();
    document.setRootElement(rootElement);
    return document;
}

---

From source file:ca.nrc.cadc.xml.JsonInputter.java

private void processJSONObject(JSONObject jsonObject, Element element, List<Namespace> namespaces)
        throws JSONException {
    List<String> keys = Arrays.asList(JSONObject.getNames(jsonObject));
    Namespace namespace = getNamespace(namespaces, jsonObject, keys);
    if (namespace == null) {
        namespace = element.getNamespace();
    }/* w  w w  . ja  v  a 2  s  .co  m*/

    for (String key : keys) {
        if (jsonObject.isNull(key)) {
            continue;
        }

        // attribute
        if (key.startsWith("@")) {
            Object value = jsonObject.get(key);
            element.setAttribute(new Attribute(key.substring(1), getStringValue(value)));
            continue;
        }

        // text content
        Object value = jsonObject.get(key);
        if (key.equals("$")) {
            element.setText(getStringValue(value));
            continue;
        }

        Element child = new Element(key, namespace);
        if (listElementMap.containsKey(key)) {
            final String childKey = listElementMap.get(key);
            final Object childObject = ((JSONObject) value).get("$");
            Element grandChild = new Element(childKey, namespace);

            if (childObject instanceof JSONArray) {
                processJSONArray(key, (JSONArray) childObject, child, namespace, namespaces);
            } else if (childObject instanceof JSONObject) {
                processJSONObject((JSONObject) childObject, grandChild, namespaces);
                child.addContent(grandChild);
            }
        } else if (value instanceof JSONObject) {
            processJSONObject((JSONObject) value, child, namespaces);
        }

        element.addContent(child);
    }
}

---

From source file:ca.nrc.cadc.xml.JsonInputter.java

private Namespace getNamespace(List<Namespace> namespaces, JSONObject jsonObject, List<String> keys)
        throws JSONException {
    for (String key : keys) {
        if (key.equals("@xmlns")) {
            if (jsonObject.isNull(key)) {
                break;
            }/*w ww .  j av a  2s  . c  om*/
            String uri = jsonObject.getString(key);
            Namespace namespace = Namespace.getNamespace(uri);
            if (!namespaces.contains(namespace)) {
                namespaces.add(namespace);
            }
            return namespace;
        }
    }
    return null;
}

---

From source file:edu.wpi.margrave.SQSReader.java

protected static void handleSQSStatement(JSONObject thisStatement, MPolicyLeaf result, int counter)
        throws JSONException, MGEUnsupportedSQS, MGEBadIdentifierName, MGEUnknownIdentifier,
        MGEManagerException {//from  ww  w.  jav a2  s.c o  m
    String ruleId = result.name + "_rule_" + counter;

    // Documentation says the statement ID is optional.
    if (!thisStatement.isNull("Sid"))
        ruleId = thisStatement.getString("Sid");

    String effect;
    if (!thisStatement.isNull("Effect"))
        effect = thisStatement.getString("Effect");
    else
        return; // no effect means no need to add the rule

    List<String> ruleNameOrdering = new ArrayList<String>(4);
    ruleNameOrdering.add("p");
    ruleNameOrdering.add("a");
    ruleNameOrdering.add("r");
    ruleNameOrdering.add("c");

    Formula theTarget = Formula.TRUE;
    Formula theCondition = Formula.TRUE;

    // target starts as true. All criteria must be met, so just "and" each on.

    // *************************
    // "Principal": disjunction
    if (thisStatement.isNull("Principal"))
        return; // never applies, so don't create the rule.            
    theTarget = handleStatementPAR(thisStatement.get("Principal"), "p", "Principal", theTarget, result.vocab,
            "Principal");

    // *************************      
    // "Action": disjunction
    if (thisStatement.isNull("Action"))
        return; // never applies, so don't create the rule.
    theTarget = handleStatementPAR(thisStatement.get("Action"), "a", "Action", theTarget, result.vocab,
            "Action");

    // *************************
    // "Resource": disjunction
    if (thisStatement.isNull("Resource"))
        return; // never applies, so don't create the rule.
    theTarget = handleStatementPAR(thisStatement.get("Resource"), "r", "Resource", theTarget, result.vocab,
            "Resource");

    // *************************
    // "Condition": more complex
    // Condition optional? TODO -- for now if no condition, just finalize the rule. 
    // (Why are P/A/R special?)
    if (!thisStatement.isNull("Condition"))
        theCondition = handleStatementCondition(thisStatement.getJSONObject("Condition"), theTarget,
                result.vocab);

    // Finalize the rule.
    result.addRule(ruleId, effect, ruleNameOrdering, theTarget, theCondition);
}

---

From source file:com.macmoim.pang.FoodListFragment.java

/**
 * Parsing json reponse and passing the data to feed view list adapter
 *//*from  ww w  .  j  a  v  a 2 s  .co  m*/
private void ParseJsonFeed(JSONObject response, boolean toClearArray) {
    if (mRecyclerView == null) {
        return;
    }
    if (toClearArray) {
        feedItems.clear();
    }
    try {
        if ("success".equals(response.getString("ret_val"))) {
            JSONArray feedArray = response.getJSONArray("post_info");

            int length = feedArray.length();
            for (int i = 0; i < length; i++) {
                JSONObject feedObj = (JSONObject) feedArray.get(i);

                FoodItem item = new FoodItem();
                item.setId(feedObj.getInt("id"));
                item.setName(feedObj.getString("title"));
                item.setUserId(feedObj.getString("user_id"));
                item.setUserName(feedObj.getString("user_name"));

                // Image might be null sometimes
                String image = feedObj.isNull("img_path") ? null : feedObj.getString("img_path");
                item.setImge(image);
                item.setTimeStamp(feedObj.getString("date"));

                item.setLikeSum(feedObj.getString("like_sum"));
                String score = feedObj.getString("score");
                item.setScore("null".equals(score) ? "0" : score);

                Log.d(TAG, "parseJsonFeed dbname " + feedObj.getString("img_path"));
                feedItems.add(0, item);
            }

            // notify data changes to list adapater
            mRecyclerView.getAdapter().notifyDataSetChanged();
        } else {
            Log.e(TAG, "return fail : " + response.getString("ret_detail"));
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }
}

---

From source file:me.mast3rplan.phantombot.cache.FollowersCache.java

public int quickUpdate(String channel) throws Exception {
    JSONObject j = TwitchAPIv3.instance().GetChannelFollows(channel, 100, 0, false);

    if (j.getBoolean("_success")) {
        if (j.getInt("_http") == 200) {
            int i = j.getInt("_total");

            Map<String, JSONObject> newCache = Maps.newHashMap();
            JSONArray followers = j.getJSONArray("follows");

            for (int b = 0; b < followers.length(); b++) {
                JSONObject follower = followers.getJSONObject(b);
                newCache.put(follower.getJSONObject("user").getString("name"), follower);
            }/*w  ww .j a v  a2  s  . co m*/

            for (String key : newCache.keySet()) {
                if (cache == null || !cache.containsKey(key)) {
                    cache.put(key, newCache.get(key));
                    EventBus.instance().post(
                            new TwitchFollowEvent(key, PhantomBot.instance().getChannel("#" + this.channel)));
                }
            }

            this.count = cache.size();

            return i;
        } else {
            throw new Exception("[HTTPErrorException] HTTP " + j.getInt("status") + " " + j.getString("error")
                    + ". req=" + j.getString("_type") + " " + j.getString("_url") + " " + j.getString("_post")
                    + "   " + (j.has("message") && !j.isNull("message") ? "message=" + j.getString("message")
                            : "content=" + j.getString("_content")));
        }
    } else {
        throw new Exception("[" + j.getString("_exception") + "] " + j.getString("_exceptionMessage"));
    }
}

---

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