Example usage for com.google.gson JsonElement getAsString

List of usage examples for com.google.gson JsonElement getAsString

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Introduction

In this page you can find the example usage for com.google.gson JsonElement getAsString.

Prototype

public String getAsString()

Source Link

Document

convenience method to get this element as a string value.

Usage

From source file:at.ac.uniklu.mobile.sportal.api.GsonNotificationTypeDeserializer.java

License:Open Source License

@Override
public Type deserialize(JsonElement json, java.lang.reflect.Type classOfT, JsonDeserializationContext context)
        throws JsonParseException {
    try {//from  w ww  .ja  v a  2 s  .  c  o m
        return Type.valueOf(json.getAsString());
    } catch (IllegalArgumentException e) {
        return Type.UNKNOWN;
    }
}

From source file:at.pcgamingfreaks.Message.MessageComponent.java

License:Open Source License

/**
 * Generates a MessageComponent list from a given {@link JsonArray} object.
 *
 * @param componentArray The {@link JsonArray} containing all the components, from the deserializer.
 * @return A list of MessageComponent objects. An empty list if there are no components in the given {@link JsonArray}.
 *///w ww  . j a v a  2  s .co  m
protected List<T> fromJsonArrayWorker(JsonArray componentArray) {
    List<T> components = new LinkedList<>();
    for (JsonElement component : componentArray) {
        if (component instanceof JsonPrimitive) {
            try {
                T messageComponent = (T) messageComponentConstructor.newInstance();
                messageComponent.setText(component.getAsString());
                components.add(messageComponent);
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else if (component instanceof JsonObject) {
            components.add((T) GSON.fromJson(component, messageComponentClass));
        } else if (component instanceof JsonArray) {
            components.addAll(fromJsonArrayWorker((JsonArray) component));
        }
    }
    return components;
}

From source file:au.edu.ausstage.tweetgatherer.MessageProcessor.java

License:Open Source License

/**
 * A method that is run in the thread//from  w  ww  . ja  v  a 2 s . com
 * Takes a tweet from the queue and processes it
 */
public void run() {
    STweet tweet = null;

    try {

        // infinite loop to keep the thread running
        while (true) {

            // take a tweet from the queue
            tweet = newTweets.take();

            // get the tweet id number
            String tweetId = Long.toString(tweet.getStatusId());

            // get a hash of the tweet id
            String tweetIdHash = HashUtils.hashValue(tweetId);

            // get the user
            STweetUser user = tweet.getUser();

            // get the user id
            String userId = Long.toString(user.getUserId());

            // get a hash of the user id
            String userIdHash = HashUtils.hashValue(userId);

            // get the JSON value of the tweet
            JsonObject jsonTweetObject = sanitiseMessage(tweet.getJSON(), tweetIdHash);

            // get the JSON value of the user
            JsonObject jsonUserObject = sanitiseUser(user.getJSON(), userIdHash);

            // replace the user with the sanitised version
            jsonTweetObject.remove("user");
            jsonTweetObject.addProperty("user", "");

            /*
             * Write the file
             */

            if (FileUtils.writeNewFile(logFiles + "/" + tweetIdHash,
                    jsonTweetObject.toString() + "\n" + jsonUserObject.toString()) == false) {
                System.err.println("ERROR: Unable to write file to the specified log file");
                System.err.println("       twitter message with id '" + tweetId + "' is now lost");
            } else {
                System.out.println("INFO: New Message written to the log directory:");
                System.out.println("      " + tweetIdHash);
            }

            /*
             * get the hash tags from this message
             */

            // get the list of hash tags from the tweet
            JsonElement elem = jsonTweetObject.get("text");
            List<String> hashtags = extractHashTags.extractHashtags(elem.getAsString());

            // convert all of the found hash tags to lower case
            ListIterator<String> hashtagsIterator = hashtags.listIterator();

            while (hashtagsIterator.hasNext() == true) {

                // get the next tage in the list
                String tmp = (String) hashtagsIterator.next();

                tmp = tmp.toLowerCase();

                // replace the value we retrieved with this updated one
                hashtagsIterator.set(tmp);
            }

            // see if this is a company performance
            if (isCompanyPerformance(hashtags, jsonTweetObject, jsonUserObject, tweetIdHash) == false) {
                // this isn't a company performance
                // is it using a performance specific id?
                if (isPerformance(hashtags, jsonTweetObject, jsonUserObject, tweetIdHash) == false) {
                    //this isn't a valid performance
                    System.err.println("ERROR: Unable to find a matching performance for this message");

                    // send an exception report
                    if (emailManager.sendMessageWithAttachment(EMAIL_SUBJECT, EMAIL_MESSAGE,
                            logFiles + "/" + tweetIdHash) == false) {
                        System.err.println("ERROR: Unable to send the exception report");
                    }
                }
            }
        }

    } catch (InterruptedException ex) {
        // thread has been interrupted
        System.out.println("INFO: The Message processing thread has stopped");
    }
}

From source file:au.edu.ausstage.tweetgatherer.MessageProcessor.java

License:Open Source License

/**
 * A private method to sanitise the message
 *
 * @param jsonTweetObject the original message object
 * @param idHash          the hash of the message id
 *
 * @return                the sanitised message object
 *//*  w  w w .j  a  va2  s .  c  o m*/
private JsonObject sanitiseMessage(JsonObject jsonTweetObject, String idHash) {

    // remove the id and replace it with the hash
    jsonTweetObject.remove("id");
    jsonTweetObject.addProperty("id", idHash);

    // replace the "in_reply_to_user_id" field with a hash if present
    if (jsonTweetObject.has("in_reply_to_user_id") == true) {

        // get a hash of the value
        JsonElement elem = jsonTweetObject.get("in_reply_to_user_id");
        if (elem.isJsonNull() == false) {
            String hash = HashUtils.hashValue(elem.getAsString());

            // update the value
            jsonTweetObject.remove("in_reply_to_user_id");
            jsonTweetObject.addProperty("in_reply_to_user_id", hash);
        }
    }

    // replace the "in_reply_to_status_id" field with a hash if present
    if (jsonTweetObject.has("in_reply_to_status_id") == true) {

        // get a hash of the value
        JsonElement elem = jsonTweetObject.get("in_reply_to_status_id");
        if (elem.isJsonNull() == false) {
            String hash = HashUtils.hashValue(elem.getAsString());

            // update the value
            jsonTweetObject.remove("in_reply_to_status_id");
            jsonTweetObject.addProperty("in_reply_to_status_id", hash);
        }
    }

    // replace the "retweeted_status" field with a hash if present
    if (jsonTweetObject.has("retweeted_status") == true) {

        // get a hash of the value
        JsonElement elem = jsonTweetObject.get("retweeted_status");
        if (elem.isJsonNull() == false) {
            String hash = HashUtils.hashValue(elem.getAsString());

            // update the value
            jsonTweetObject.remove("retweeted_status");
            jsonTweetObject.addProperty("retweeted_status", hash);
        }
    }

    // return the sanitised object
    return jsonTweetObject;

}

From source file:au.edu.ausstage.tweetgatherer.MessageProcessor.java

License:Open Source License

/**
 * A private method to process a message containing a company hash tag
 *
 * @param hashtags        a list of hashtags associated with this message
 * @param jsonTweetObject the message/*  ww w  . j a v  a2  s . c o m*/
 * @param jsonUserObject  the user object
 * @param tweetIdHash     the hash of the message id
 *
 * @return                true if, and only if, the message was processed successfully
 */
private boolean isPerformance(List<String> hashtags, JsonObject jsonTweetObject, JsonObject jsonUserObject,
        String tweetIdHash) {

    /*
     * get the performance and question id
     */
    String performanceId = null;
    String questionId = null;

    JsonElement elem = jsonTweetObject.get("created_at");
    DateTime messageCreated = inputDateTimeFormat.parseDateTime(elem.getAsString());

    String selectSql = "SELECT performance_id, question_id, SUBSTR(hash_tag, 2) " + "FROM mob_performances "
            + "WHERE deprecated_hash_tag = 'N'";

    // get the data
    DbObjects results = database.executeStatement(selectSql);

    // double check the results
    if (results == null) {
        System.err.println("ERROR: Unable to execute the SQL to lookup performance specific hashtags");

        // send an exception report
        if (emailManager.sendMessageWithAttachment(EMAIL_SUBJECT, EMAIL_MESSAGE,
                logFiles + "/" + tweetIdHash) == false) {
            System.err.println("ERROR: Unable to send the exception report");
        }

        return false;

    } else {
        // look for performances matching the hash tag from the message
        ResultSet resultSet = results.getResultSet();

        // loop through the resultset
        boolean found = false; // exit the loop early
        String[] sqlParameters = new String[7]; // store the parameters

        try {

            while (resultSet.next() && found == false) {

                // see if the hashtags in the message match one in the DB
                if (hashtags.contains(resultSet.getString(3)) == true) {
                    // yep
                    sqlParameters[0] = resultSet.getString(1);
                    sqlParameters[1] = resultSet.getString(2);
                    found = true;
                }
            }
        } catch (java.sql.SQLException ex) {
            found = false;
        }

        if (found == false) {
            // no performance with a matching company id was found
            return false;
        } else {

            /*
             * write the message to the database
             */

            // define the sql
            String insertSql = "INSERT INTO mob_feedback "
                    + "(performance_id, question_id, source_type, received_date_time, received_from, source_id, short_content) "
                    + "VALUES (?,?,?, TO_DATE(?, '" + DB_DATE_TIME_FORMAT + "'),?,?,?)";

            // use the source id from the constant
            sqlParameters[2] = SOURCE_ID;

            // add the date and time
            sqlParameters[3] = dateTimeFormat.print(messageCreated);

            // add the user id
            elem = jsonUserObject.get("id");
            sqlParameters[4] = elem.getAsString();

            // add the source id
            elem = jsonTweetObject.get("id");
            sqlParameters[5] = elem.getAsString();

            // add the message
            elem = jsonUserObject.get("text");
            sqlParameters[6] = elem.getAsString();

            // insert the data
            if (database.executePreparedInsertStatement(insertSql, sqlParameters) == false) {
                System.err.println("ERROR: Unable to add the message to the database");

                // send an exception report
                if (emailManager.sendMessageWithAttachment(EMAIL_SUBJECT,
                        "Exception Report: The Tweet Gatherer was unable to store this message in the database",
                        logFiles + "/" + tweetIdHash) == false) {
                    System.err.println("ERROR: Unable to send the exception report");
                }

            } else {
                System.out.println("INFO: Successfully added the message to the database");
                return true;
            }
        }
    } // end performance check

    // if we get this far, something bad happend
    return false;
}

From source file:au.edu.ausstage.tweetgatherer.MessageProcessor.java

License:Open Source License

/**
 * A private method to process a message containing a company hash tag
 *
 * @param hashtags        a list of hashtags associated with this message
 * @param jsonTweetObject the message/* w ww.java  2  s  . co  m*/
 * @param jsonUserObject  the user object
 * @param tweetIdHash     the hash of the message id
 *
 * @return                true if, and only if, the message was processed successfully
 */
private boolean isCompanyPerformance(List<String> hashtags, JsonObject jsonTweetObject,
        JsonObject jsonUserObject, String tweetIdHash) {

    /*
     * get the date & time that the message was received
     */
    JsonElement elem = jsonTweetObject.get("created_at");
    DateTime messageCreated = inputDateTimeFormat.parseDateTime(elem.getAsString());
    LocalDateTime localMessageCreated = messageCreated.toLocalDateTime();

    /*
     * get the performance and question id
     */
    String performanceId = null;
    String questionId = null;

    // define the sql            
    String selectSql = "SELECT performance_id, question_id, SUBSTR(twitter_hash_tag, 2) "
            + "FROM mob_performances, mob_organisations, orgevlink "
            + "WHERE mob_performances.event_id = orgevlink.eventid "
            + "AND mob_organisations.organisation_id = orgevlink.organisationid "
            + "AND start_date_time < TO_DATE(?, '" + DB_DATE_TIME_FORMAT + "') "
            + "AND end_date_time + 1/12 > TO_DATE(?, '" + DB_DATE_TIME_FORMAT + "') ";

    // define the parameters array
    String[] sqlParameters = new String[2];
    sqlParameters[0] = dateTimeFormat.print(messageCreated);
    sqlParameters[1] = dateTimeFormat.print(messageCreated);

    // get the data
    DbObjects results = database.executePreparedStatement(selectSql, sqlParameters);

    // double check the results
    if (results == null) {
        System.err.println("ERROR: Unable to execute the SQL to lookup performances");

        // send an exception report
        if (emailManager.sendMessageWithAttachment(EMAIL_SUBJECT, EMAIL_MESSAGE,
                logFiles + "/" + tweetIdHash) == false) {
            System.err.println("ERROR: Unable to send the exception report");
        }

        return false;

    } else {

        // look for performances matching the hash tag from the message
        ResultSet resultSet = results.getResultSet();

        // loop through the resultset
        boolean found = false; // exit the loop early
        sqlParameters = new String[7]; // store the parameters

        try {

            while (resultSet.next() && found == false) {

                // see if the hashtags in the message match one in the DB
                if (hashtags.contains(resultSet.getString(3)) == true) {
                    // yep
                    sqlParameters[0] = resultSet.getString(1);
                    sqlParameters[1] = resultSet.getString(2);
                    found = true;
                }
            }
        } catch (java.sql.SQLException ex) {
            found = false;
        }

        if (found == false) {
            // no performance with a matching company id was found
            return false;
        } else {

            /*
             * write the message to the database
             */

            // define the sql
            String insertSql = "INSERT INTO mob_feedback "
                    + "(performance_id, question_id, source_type, received_date_time, received_from, source_id, short_content) "
                    + "VALUES (?,?,?, TO_DATE(?, '" + DB_DATE_TIME_FORMAT + "'),?,?,?)";

            // use the source id from the constant
            sqlParameters[2] = SOURCE_ID;

            // add the date and time
            sqlParameters[3] = dateTimeFormat.print(messageCreated);

            // add the user id
            elem = jsonUserObject.get("id");
            sqlParameters[4] = elem.getAsString();

            // add the source id
            elem = jsonTweetObject.get("id");
            sqlParameters[5] = elem.getAsString();

            // add the message
            elem = jsonUserObject.get("text");
            sqlParameters[6] = elem.getAsString();

            // insert the data
            if (database.executePreparedInsertStatement(insertSql, sqlParameters) == false) {
                System.err.println("ERROR: Unable to add the message to the database");

                // send an exception report
                if (emailManager.sendMessageWithAttachment(EMAIL_SUBJECT,
                        "Exception Report: The Tweet Gatherer was unable to store this message in the database",
                        logFiles + "/" + tweetIdHash) == false) {
                    System.err.println("ERROR: Unable to send the exception report");
                }

            } else {
                System.out.println("INFO: Successfully added the message to the database");
                return true;
            }
        }
    } // end performance check

    // if we get this far, something bad happend
    return false;
}

From source file:augsburg.se.alltagsguide.utilities.Helper.java

License:Open Source License

@NonNull
public static String getStringOrDefault(JsonElement elem, String defaultValue) {
    try {//ww  w.  ja  v  a  2  s .  c  om
        return elem.getAsString();
    } catch (Exception e) {
        Ln.d(e);
        return defaultValue;
    }
}

From source file:be.iminds.iot.dianne.nn.util.DianneJSONConverter.java

License:Open Source License

private static ModuleDTO parseModuleJSON(JsonObject jsonModule) {

    UUID id = UUID.fromString(jsonModule.get("id").getAsString());
    String type = jsonModule.get("type").getAsString();

    UUID[] next = null, prev = null;
    Map<String, String> properties = new HashMap<String, String>();

    if (jsonModule.has("next")) {
        if (jsonModule.get("next").isJsonArray()) {
            JsonArray jsonNext = jsonModule.get("next").getAsJsonArray();

            next = new UUID[jsonNext.size()];
            int i = 0;
            Iterator<JsonElement> it = jsonNext.iterator();
            while (it.hasNext()) {
                JsonElement e = it.next();
                next[i++] = UUID.fromString(e.getAsString());
            }// w  w w .  j a va  2 s  . c  o  m
        } else {
            next = new UUID[1];
            next[0] = UUID.fromString(jsonModule.get("next").getAsString());
        }
    }
    if (jsonModule.has("prev")) {
        if (jsonModule.get("prev").isJsonArray()) {
            JsonArray jsonPrev = jsonModule.get("prev").getAsJsonArray();

            prev = new UUID[jsonPrev.size()];
            int i = 0;
            Iterator<JsonElement> it = jsonPrev.iterator();
            while (it.hasNext()) {
                JsonElement e = it.next();
                prev[i++] = UUID.fromString(e.getAsString());
            }
        } else {
            prev = new UUID[1];
            prev[0] = UUID.fromString(jsonModule.get("prev").getAsString());
        }
    }

    // TODO this uses the old model where properties where just stored as flatmap      
    for (Entry<String, JsonElement> property : jsonModule.entrySet()) {
        String key = property.getKey();
        if (key.equals("id") || key.equals("type") || key.equals("prev") || key.equals("next")) {
            continue;
            // this is only for module-specific properties
        }
        properties.put(property.getKey(), property.getValue().getAsString());
    }

    // TODO evolve to a separate "properties" item
    if (jsonModule.has("properties")) {
        JsonObject jsonProperties = jsonModule.get("properties").getAsJsonObject();
        for (Entry<String, JsonElement> jsonProperty : jsonProperties.entrySet()) {
            String key = jsonProperty.getKey();
            String value = jsonProperty.getValue().getAsString();

            properties.put(key, value);
        }
    }

    ModuleDTO dto = new ModuleDTO(id, type, next, prev, properties);
    return dto;
}

From source file:br.com.caelum.vraptor.serialization.gson.CalendarGsonConverter.java

License:Open Source License

@Override
public Calendar deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
        throws JsonParseException {
    return DatatypeConverter.parseDate(json.getAsString());
}

From source file:br.com.caelum.vraptor.serialization.gson.DateGsonConverter.java

License:Open Source License

@Override
public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
        throws JsonParseException {
    try {//from   w  w  w  .ja v  a2s .c  o  m
        return iso8601Format.parse(json.getAsString());
    } catch (ParseException e) {
        throw new JsonSyntaxException(json.getAsString(), e);
    }
}