Example usage for com.google.gson.stream JsonReader nextString

List of usage examples for com.google.gson.stream JsonReader nextString

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Introduction

In this page you can find the example usage for com.google.gson.stream JsonReader nextString.

Prototype

public String nextString() throws IOException

Source Link

Document

Returns the com.google.gson.stream.JsonToken#STRING string value of the next token, consuming it.

Usage

From source file:com.ibm.watson.developer_cloud.tradeoff_analytics.v1.util.ColumnTypeAdapter.java

License:Open Source License

@Override
public Column read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();//from   w  w w.j a v a 2  s  .c  om
        return null;
    }

    ColumnType type = ColumnType.TEXT;
    Goal goal = null;
    Boolean objective = null;

    String key = null, format = null, description = null, fullName = null, low = null, high = null;
    Double significantGain = null, significantLoss = null, insignificantLoss = null;

    List<String> categoricalRange = null, categoricalPreference = null;

    reader.beginObject();

    while (reader.hasNext()) {
        String name = reader.nextName();

        if (name.equals(TYPE2)) {
            type = ColumnType.fromString(reader.nextString());
        } else if (name.equals(KEY)) {
            key = reader.nextString();
        } else if (name.equals(GOAL)) {
            goal = Goal.fromString(reader.nextString());
        } else if (name.equals(IS_OBJECTIVE)) {
            objective = reader.nextBoolean();
        } else if (name.equals(FORMAT)) {
            format = reader.nextString();
        } else if (name.equals(DESCRIPTION)) {
            description = reader.nextString();
        } else if (name.equals(FULL_NAME)) {
            fullName = reader.nextString();
        } else if (name.equals(SIGNIFICANT_GAIN)) {
            significantGain = reader.nextDouble();
        } else if (name.equals(SIGNIFICANT_LOSS)) {
            significantLoss = reader.nextDouble();
        } else if (name.equals(INSIGNIFICANT_LOSS)) {
            insignificantLoss = reader.nextDouble();
        } else if (name.equals("preference")) {
            reader.beginArray();
            categoricalPreference = new ArrayList<String>();
            while (reader.hasNext()) {
                categoricalPreference.add(reader.nextString());
            }
            reader.endArray();
        } else if (name.equals(RANGE)) {
            if (reader.peek().equals(JsonToken.BEGIN_ARRAY)) {
                reader.beginArray();
                categoricalRange = new ArrayList<String>();
                while (reader.hasNext()) {
                    categoricalRange.add(reader.nextString());
                }
                reader.endArray();
            } else {
                reader.beginObject();
                while (reader.hasNext()) {
                    name = reader.nextName();
                    if (name.equals(LOW)) {
                        low = reader.nextString();
                    } else if (name.equals(HIGH)) {
                        high = reader.nextString();
                    } else {
                        reader.skipValue();
                    }
                }
                reader.endObject();
            }
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();

    Column column;
    if (type == ColumnType.CATEGORICAL) {
        column = new CategoricalColumn();
        if (categoricalRange != null) {
            ((CategoricalColumn) column).setRange(categoricalRange);
        }
        if (categoricalPreference != null) {
            ((CategoricalColumn) column).setRange(categoricalPreference);
        }
    } else if (type == ColumnType.DATETIME) {
        column = new DateColumn();
        if (low != null) {
            try {
                ((DateColumn) column).withRange(DATE_FORMATTER.parse(low), DATE_FORMATTER.parse(high));
            } catch (final ParseException e) {
                LOG.log(Level.SEVERE, "Error parsing the date", e);
            }
        }
    } else if (type == ColumnType.NUMERIC) {
        column = new NumericColumn();
        if (low != null) {
            ((NumericColumn) column).range(Double.valueOf(low), Double.valueOf(high));
        }
    } else {
        column = new TextColumn();
    }

    column.setKey(key);

    if (description != null) {
        column.setDescription(description);
    }

    if (format != null) {
        column.setFormat(format);
    }

    if (objective != null) {
        column.setObjective(objective);
    }

    if (fullName != null) {
        column.setFullName(fullName);
    }

    if (goal != null) {
        column.setGoal(goal);
    }

    if (key != null) {
        column.setKey(key);
    }

    if (significantGain != null) {
        column.setSignificantGain(significantGain);
    }

    if (significantLoss != null) {
        column.setSignificantLoss(insignificantLoss);
    }

    if (insignificantLoss != null) {
        column.setInsignificantLoss(insignificantLoss);
    }

    return column;
}

From source file:com.ibm.watson.developer_cloud.util.BooleanToStringTypeAdapter.java

License:Open Source License

@Override
public Boolean read(JsonReader in) throws IOException {
    if (in.peek() == JsonToken.NULL) {
        in.nextNull();//  w ww . jav  a2s.  co  m
        return null;
    } else {
        final String value = in.nextString();

        if (YES.equals(value) || TRUE.equals(value)) {
            return Boolean.TRUE;
        } else if (NO.equals(value) || FALSE.equals(value)) {
            return Boolean.FALSE;
        } else if (value.isEmpty()) {
            return null;
        }

        throw new IllegalArgumentException("Cannot parse JSON value '" + value + "' to Boolean.");
    }
}

From source file:com.ibm.watson.discovery.v1.query.AggregationDeserializer.java

License:Open Source License

/**
 * Checks the next {@link JsonToken} to decide the next appropriate parsing method.
 *
 * @param in {@link JsonReader} object used for parsing
 * @param objMap Map used to build the structure for the resulting {@link QueryAggregation} object
 * @throws IOException signals that there has been an IO exception
 *//* w w  w .  java2s .c o  m*/
private void parseNext(JsonReader in, HashMap<String, Object> objMap) throws IOException {
    JsonToken token = in.peek();

    String lastName = "";
    if (token == JsonToken.NAME) {
        lastName = in.nextName();
        token = in.peek();
    }

    switch (token) {
    case BEGIN_ARRAY:
        parseArray(in, objMap, lastName);
        break;
    case BEGIN_OBJECT:
        parseObject(in, objMap, lastName);
        break;
    case STRING:
        objMap.put(lastName, in.nextString());
        break;
    case NUMBER:
        objMap.put(lastName, in.nextDouble());
        break;
    case BOOLEAN:
        objMap.put(lastName, in.nextBoolean());
        break;
    default:
        throw new IOException("Unexpected JSON token encountered");
    }

    collapseMap(objMap);
}

From source file:com.ichi2.anki.AnkiDroidProxy.java

License:Open Source License

/**
 * Parses a JSON InputStream to a list of SharedDecks efficiently 
 * @param is InputStream to parse and convert. It only works with the reply from
 *        getSharedDecks request/*from www.  j  av a  2  s.  c  om*/
 * @return List of SharedDecks that were parsed
 * @throws Exception 
 */
public static List<SharedDeck> parseGetSharedDecksResponce(InputStream is) throws Exception {
    BufferedReader rd = new BufferedReader(new InputStreamReader(is), 409600);
    JsonReader reader = new JsonReader(rd);
    List<SharedDeck> sharedDecks = new ArrayList<SharedDeck>();
    try {
        reader.beginArray();
        int count = 0;
        while (reader.hasNext()) {
            SharedDeck sd = new SharedDeck();
            reader.beginArray();
            sd.setId(reader.nextInt()); // SD_ID
            reader.skipValue(); // SD_USERNAME
            sd.setTitle(reader.nextString()); // SD_TITLE
            reader.skipValue(); // SD_DESCRIPTION
            reader.skipValue(); // SD_TAGS
            reader.skipValue(); // SD_VERSION
            sd.setFacts(reader.nextInt()); // SD_FACTS
            sd.setSize(reader.nextInt()); // SD_SIZE
            reader.skipValue(); // SD_COUNT
            reader.skipValue(); // SD_MODIFIED
            reader.skipValue(); // SD_FNAME
            reader.endArray();
            sharedDecks.add(sd);
            count++;
        }
        reader.endArray();
        reader.close();
        Log.d(AnkiDroidApp.TAG, "parseGetSharedDecksResponce: found " + count + " shared decks");
    } catch (Exception e) {
        Log.e(AnkiDroidApp.TAG, Log.getStackTraceString(e));
        sharedDecks.clear();
        throw e;
    }

    return sharedDecks;
}

From source file:com.ichi2.async.DeckTask.java

License:Open Source License

private TaskData doInBackgroundImportReplace(TaskData... params) {
    Timber.d("doInBackgroundImportReplace");
    Collection col = params[0].getCollection();
    String path = params[0].getString();
    Resources res = AnkiDroidApp.getInstance().getBaseContext().getResources();

    // extract the deck from the zip file
    String fileDir = AnkiDroidApp.getCurrentAnkiDroidDirectory() + "/tmpzip";
    File dir = new File(fileDir);
    if (dir.exists()) {
        BackupManager.removeDir(dir);/*w  w w  .  jav a  2 s . c  o  m*/
    }

    publishProgress(new TaskData(res.getString(R.string.import_unpacking)));
    // from anki2.py
    String colFile = fileDir + "/collection.anki2";
    ZipFile zip;
    try {
        zip = new ZipFile(new File(path), ZipFile.OPEN_READ);
    } catch (IOException e) {
        Timber.e(e, "doInBackgroundImportReplace - Error while unzipping");
        AnkiDroidApp.sendExceptionReport(e, "doInBackgroundImportReplace0");
        return new TaskData(false);
    }
    if (!Utils.unzipFiles(zip, fileDir, new String[] { "collection.anki2", "media" }, null)
            || !(new File(colFile)).exists()) {
        return new TaskData(-2, null, false);
    }

    Collection tmpCol = null;
    try {
        tmpCol = Storage.Collection(colFile);
        if (!tmpCol.validCollection()) {
            tmpCol.close();
            return new TaskData(-2, null, false);
        }
    } catch (Exception e) {
        Timber.e("Error opening new collection file... probably it's invalid");
        try {
            tmpCol.close();
        } catch (Exception e2) {
            // do nothing
        }
        return new TaskData(-2, null, false);
    } finally {
        if (tmpCol != null) {
            tmpCol.close();
        }
    }

    publishProgress(new TaskData(res.getString(R.string.importing_collection)));
    String colPath;
    if (col != null) {
        // unload collection and trigger a backup
        colPath = col.getPath();
        AnkiDroidApp.closeCollection(true);
        BackupManager.performBackupInBackground(colPath, true);
    }
    // overwrite collection
    colPath = AnkiDroidApp.getCollectionPath();
    File f = new File(colFile);
    if (!f.renameTo(new File(colPath))) {
        // Exit early if this didn't work
        return new TaskData(-2, null, false);
    }
    int addedCount = -1;
    try {
        // open using force close of old collection, as background loader may have reopened the col
        col = AnkiDroidApp.openCollection(colPath, true);

        // because users don't have a backup of media, it's safer to import new
        // data and rely on them running a media db check to get rid of any
        // unwanted media. in the future we might also want to duplicate this step
        // import media
        HashMap<String, String> nameToNum = new HashMap<String, String>();
        HashMap<String, String> numToName = new HashMap<String, String>();
        File mediaMapFile = new File(fileDir, "media");
        if (mediaMapFile.exists()) {
            JsonReader jr = new JsonReader(new FileReader(mediaMapFile));
            jr.beginObject();
            String name;
            String num;
            while (jr.hasNext()) {
                num = jr.nextName();
                name = jr.nextString();
                nameToNum.put(name, num);
                numToName.put(num, name);
            }
            jr.endObject();
            jr.close();
        }
        String mediaDir = col.getMedia().dir();
        int total = nameToNum.size();
        int i = 0;
        for (Map.Entry<String, String> entry : nameToNum.entrySet()) {
            String file = entry.getKey();
            String c = entry.getValue();
            File of = new File(mediaDir, file);
            if (!of.exists()) {
                Utils.unzipFiles(zip, mediaDir, new String[] { c }, numToName);
            }
            ++i;
            publishProgress(new TaskData(res.getString(R.string.import_media_count, (i + 1) * 100 / total)));
        }
        zip.close();
        // delete tmp dir
        BackupManager.removeDir(dir);

        publishProgress(new TaskData(res.getString(R.string.import_update_counts)));
        // Update the counts
        DeckTask.TaskData result = doInBackgroundLoadDeckCounts(new TaskData(col));
        if (result == null) {
            return null;
        }
        return new TaskData(addedCount, result.getObjArray(), true);
    } catch (RuntimeException e) {
        Timber.e(e, "doInBackgroundImportReplace - RuntimeException");
        AnkiDroidApp.sendExceptionReport(e, "doInBackgroundImportReplace1");
        return new TaskData(false);
    } catch (FileNotFoundException e) {
        Timber.e(e, "doInBackgroundImportReplace - FileNotFoundException");
        AnkiDroidApp.sendExceptionReport(e, "doInBackgroundImportReplace2");
        return new TaskData(false);
    } catch (IOException e) {
        Timber.e(e, "doInBackgroundImportReplace - IOException");
        AnkiDroidApp.sendExceptionReport(e, "doInBackgroundImportReplace3");
        return new TaskData(false);
    }
}

From source file:com.ichi2.libanki.importer.Anki2Importer.java

License:Open Source License

public int run() {
    publishProgress(false, 0, 0, false);
    try {/*  w  w  w.  j a  v a 2s.  co  m*/
        // extract the deck from the zip file
        String tempDir = AnkiDroidApp.getCurrentAnkiDroidDirectory() + "/tmpzip";
        // from anki2.py
        String colFile = tempDir + "/collection.anki2";
        if (!Utils.unzipFiles(mZip, tempDir, new String[] { "collection.anki2", "media" }, null)
                || !(new File(colFile)).exists() || !Storage.Collection(colFile).validCollection()) {
            return -2;
        }

        // we need the media dict in advance, and we'll need a map of fname number to use during the import
        File mediaMapFile = new File(tempDir, "media");
        HashMap<String, String> numToName = new HashMap<String, String>();
        if (mediaMapFile.exists()) {
            JsonReader jr = new JsonReader(new FileReader(mediaMapFile));
            jr.beginObject();
            String name;
            String num;
            while (jr.hasNext()) {
                num = jr.nextName();
                name = jr.nextString();
                nameToNum.put(name, num);
                numToName.put(num, name);
            }
            jr.endObject();
            jr.close();
        }

        _prepareFiles(colFile);
        publishProgress(true, 0, 0, false);
        int cnt = -1;
        try {
            cnt = _import();
        } finally {
            // do not close collection but close only db (in order not to confuse access counting in storage.java
            // Note that the media database is still open and needs to be closed below.
            AnkiDatabaseManager.closeDatabase(mSrc.getPath());
        }
        // import static media
        String mediaDir = mCol.getMedia().dir();
        if (nameToNum.size() != 0) {
            for (Map.Entry<String, String> entry : nameToNum.entrySet()) {
                String file = entry.getKey();
                String c = entry.getValue();
                if (!file.startsWith("_") && !file.startsWith("latex-")) {
                    continue;
                }
                File of = new File(mediaDir, file);
                if (!of.exists()) {
                    Utils.unzipFiles(mZip, mediaDir, new String[] { c }, numToName);
                }
            }
        }
        mZip.close();
        mSrc.getMedia().close();
        // delete tmp dir
        File dir = new File(tempDir);
        BackupManager.removeDir(dir);
        publishProgress(true, 100, 100, true);
        return cnt;
    } catch (RuntimeException e) {
        Timber.e(e, "RuntimeException while importing");
        return -1;
    } catch (IOException e) {
        Timber.e(e, "IOException while importing");
        return -1;
    }
}

From source file:com.ichi2.libanki.importer.AnkiPackageImporter.java

License:Open Source License

@Override
public void run() {
    publishProgress(0, 0, 0);/*from  w ww  .ja va 2s.c o m*/
    File tempDir = new File(new File(mCol.getPath()).getParent(), "tmpzip");
    Collection tmpCol;
    try {
        // We extract the zip contents into a temporary directory and do a little more
        // validation than the desktop client to ensure the extracted collection is an apkg.
        try {
            // extract the deck from the zip file
            mZip = new ZipFile(new File(mFile), ZipFile.OPEN_READ);
            Utils.unzipFiles(mZip, tempDir.getAbsolutePath(), new String[] { "collection.anki2", "media" },
                    null);
        } catch (IOException e) {
            Timber.e(e, "Failed to unzip apkg.");
            mLog.add(getRes().getString(R.string.import_log_no_apkg));
            return;
        }
        String colpath = new File(tempDir, "collection.anki2").getAbsolutePath();
        if (!(new File(colpath)).exists()) {
            mLog.add(getRes().getString(R.string.import_log_no_apkg));
            return;
        }
        tmpCol = Storage.Collection(mContext, colpath);
        try {
            if (!tmpCol.validCollection()) {
                mLog.add(getRes().getString(R.string.import_log_no_apkg));
                return;
            }
        } finally {
            if (tmpCol != null) {
                tmpCol.close();
            }
        }
        mFile = colpath;
        // we need the media dict in advance, and we'll need a map of fname ->
        // number to use during the import
        File mediaMapFile = new File(tempDir, "media");
        mNameToNum = new HashMap<>();
        // We need the opposite mapping in AnkiDroid since our extraction method requires it.
        Map<String, String> numToName = new HashMap<>();
        try {
            JsonReader jr = new JsonReader(new FileReader(mediaMapFile));
            jr.beginObject();
            String name;
            String num;
            while (jr.hasNext()) {
                num = jr.nextName();
                name = jr.nextString();
                mNameToNum.put(name, num);
                numToName.put(num, name);
            }
            jr.endObject();
            jr.close();
        } catch (FileNotFoundException e) {
            Timber.e("Apkg did not contain a media dict. No media will be imported.");
        } catch (IOException e) {
            Timber.e("Malformed media dict. Media import will be incomplete.");
        }
        // run anki2 importer
        super.run();
        // import static media
        for (Map.Entry<String, String> entry : mNameToNum.entrySet()) {
            String file = entry.getKey();
            String c = entry.getValue();
            if (!file.startsWith("_") && !file.startsWith("latex-")) {
                continue;
            }
            File path = new File(mCol.getMedia().dir(), Utils.nfcNormalized(file));
            if (!path.exists()) {
                try {
                    Utils.unzipFiles(mZip, mCol.getMedia().dir(), new String[] { c }, numToName);
                } catch (IOException e) {
                    Timber.e("Failed to extract static media file. Ignoring.");
                }
            }
        }
    } finally {
        // Clean up our temporary files
        if (tempDir.exists()) {
            BackupManager.removeDir(tempDir);
        }
    }
    publishProgress(100, 100, 100);
}

From source file:com.j2.cs.webservices.metrofax.server.json.JsonIntegerTypeAdapter.java

@Override
public Number read(JsonReader in) throws IOException {
    if (in.peek() == JsonToken.NULL) {
        in.nextNull();//w w w.j  a  va 2s  .com
        return null;
    }

    try {
        String result = in.nextString();
        if (StringUtils.isBlank(result)) {
            return null;
        }
        return Integer.parseInt(result);
    } catch (NumberFormatException e) {
        return null;
    }
}

From source file:com.j2.cs.webservices.metrofax.server.json.JsonLongTypeAdapter.java

@Override
public Number read(JsonReader in) throws IOException {
    if (in.peek() == JsonToken.NULL) {
        in.nextNull();/*  w  ww.j  a v  a 2 s .co m*/
        return null;
    }

    try {
        String result = in.nextString();
        if (StringUtils.isBlank(result)) {
            return null;
        }
        return Long.parseLong(result);
    } catch (NumberFormatException e) {
        return null;
    }
}

From source file:com.javacreed.examples.gson.part3.BookTypeAdapter.java

License:Apache License

@Override
public Book read(final JsonReader in) throws IOException {
    final Book book = new Book();

    in.beginArray();//from   www .  j av a 2s. c  om
    book.setIsbn(in.nextString());
    book.setTitle(in.nextString());
    final List<Author> authors = new ArrayList<>();
    while (in.hasNext()) {
        final int id = in.nextInt();
        final String name = in.nextString();
        authors.add(new Author(id, name));
    }
    book.setAuthors(authors.toArray(new Author[authors.size()]));
    in.endArray();

    return book;
}