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

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

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Introduction

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

Prototype

public JsonToken peek() throws IOException

Source Link

Document

Returns the type of the next token without consuming it.

Usage

From source file:com.google.maps.internal.DistanceAdapter.java

License:Open Source License

/**
 * Read a distance object from a Directions API result and convert it to a {@link Distance}.
 *
 * <p>We are expecting to receive something akin to the following:
 * <pre>/* w w w  .  ja v  a 2s  .  c om*/
 * {
 *   "value": 207,
     "text": "0.1 mi"
 * }
 * </pre>
 */
@Override
public Distance read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }

    Distance distance = new Distance();

    reader.beginObject();
    while (reader.hasNext()) {
        String name = reader.nextName();
        if (name.equals("text")) {
            distance.humanReadable = reader.nextString();
        } else if (name.equals("value")) {
            distance.inMeters = reader.nextLong();
        }

    }
    reader.endObject();

    return distance;
}

From source file:com.google.maps.internal.DurationAdapter.java

License:Open Source License

/**
 * Read a distance object from a Directions API result and convert it to a {@link Distance}.
 *
 * <p>We are expecting to receive something akin to the following:
 * <pre>//  w  w w .  j  a v  a2  s  .  c  om
 * {
 *   "value": 207,
     "text": "0.1 mi"
 * }
 * </pre>
 */
@Override
public Duration read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }

    Duration duration = new Duration();

    reader.beginObject();
    while (reader.hasNext()) {
        String name = reader.nextName();
        if (name.equals("text")) {
            duration.humanReadable = reader.nextString();
        } else if (name.equals("value")) {
            duration.inSeconds = reader.nextLong();
        }

    }
    reader.endObject();

    return duration;
}

From source file:com.google.maps.internal.FareAdapter.java

License:Open Source License

/**
 * Read a Fare object from the Directions API and convert to a {@link com.google.maps.model.Fare}
 *
 * <pre>{/*from   w ww.  ja  v a  2s  . c o m*/
 *   "currency": "USD",
 *   "value": 6
 * }</pre>
 */
@Override
public Fare read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }

    Fare fare = new Fare();
    reader.beginObject();
    while (reader.hasNext()) {
        String key = reader.nextName();
        if ("currency".equals(key)) {
            fare.currency = Currency.getInstance(reader.nextString());
        } else if ("value".equals(key)) {
            // this relies on nextString() being able to coerce raw numbers to strings
            fare.value = new BigDecimal(reader.nextString());
        } else {
            // Be forgiving of unexpected values
            reader.skipValue();
        }
    }
    reader.endObject();

    return fare;
}

From source file:com.google.maps.internal.GeolocationResponseAdapter.java

License:Open Source License

@Override
public GeolocationApi.Response read(JsonReader reader) throws IOException {

    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();/*from  ww  w.  java  2 s  . c o  m*/
        return null;
    }
    GeolocationApi.Response response = new GeolocationApi.Response();
    LatLngAdapter latLngAdapter = new LatLngAdapter();

    reader.beginObject(); // opening {
    while (reader.hasNext()) {
        String name = reader.nextName();
        // two different objects could be returned a success object containing "location" and "accuracy"
        // keys or an error object containing an "error" key
        if (name.equals("location")) {
            // we already have a parser for the LatLng object so lets use that
            response.location = latLngAdapter.read(reader);
        } else if (name.equals("accuracy")) {
            response.accuracy = reader.nextDouble();
        } else if (name.equals("error")) {
            reader.beginObject(); // the error key leads to another object...
            while (reader.hasNext()) {
                String errName = reader.nextName();
                // ...with keys "errors", "code" and "message"
                if (errName.equals("code")) {
                    response.code = reader.nextInt();
                } else if (errName.equals("message")) {
                    response.message = reader.nextString();
                } else if (errName.equals("errors")) {
                    reader.beginArray(); // its plural because its an array of errors...
                    while (reader.hasNext()) {
                        reader.beginObject();// ...and each error array element is an object...
                        while (reader.hasNext()) {
                            errName = reader.nextName();
                            // ...with keys "reason", "domain", "debugInfo", "location", "locationType",  and "message" (again)
                            if (errName.equals("reason")) {
                                response.reason = reader.nextString();
                            } else if (errName.equals("domain")) {
                                response.domain = reader.nextString();
                            } else if (errName.equals("debugInfo")) {
                                response.debugInfo = reader.nextString();
                            } else if (errName.equals("message")) {
                                // have this already
                                reader.nextString();
                            } else if (errName.equals("location")) {
                                reader.nextString();
                            } else if (errName.equals("locationType")) {
                                reader.nextString();
                            }
                        }
                        reader.endObject();
                    }
                    reader.endArray();
                }
            }
            reader.endObject(); // closing }
        }
    }
    reader.endObject();
    return response;
}

From source file:com.google.maps.internal.InstantAdapter.java

License:Open Source License

/**
 * Read a time from the Places API and convert to a {@link Instant}
 *//* ww w . j  ava  2  s  . c  o m*/
@Override
public Instant read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }

    if (reader.peek() == JsonToken.NUMBER) {
        // Number is the number of seconds since Epoch.
        return new Instant(reader.nextLong() * 1000L);
    }

    throw new UnsupportedOperationException("Unsupported format");
}

From source file:com.google.maps.internal.LatLngAdapter.java

License:Open Source License

/**
 * Reads in a JSON object and try to create a LatLng in one of the following formats.
 *
 * <pre>{/*  w w w  . j a v a 2  s  .  c  o  m*/
 *   "lat" : -33.8353684,
 *   "lng" : 140.8527069
 * }
 *
 * {
 *   "latitude": -33.865257570508334,
 *   "longitude": 151.19287000481452
 * }</pre>
 */
@Override
public LatLng read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }

    double lat = 0;
    double lng = 0;
    boolean hasLat = false;
    boolean hasLng = false;

    reader.beginObject();
    while (reader.hasNext()) {
        String name = reader.nextName();
        if ("lat".equals(name) || "latitude".equals(name)) {
            lat = reader.nextDouble();
            hasLat = true;
        } else if ("lng".equals(name) || "longitude".equals(name)) {
            lng = reader.nextDouble();
            hasLng = true;
        }
    }
    reader.endObject();

    if (hasLat && hasLng) {
        return new LatLng(lat, lng);
    } else {
        return null;
    }
}

From source file:com.google.maps.internal.LocalTimeAdapter.java

License:Open Source License

/**
 * Read a time from the Places API and convert to a {@link LocalTime}
 *//*from   w w  w.jav  a 2  s.co  m*/
@Override
public LocalTime read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }

    if (reader.peek() == JsonToken.STRING) {
        DateTimeFormatter dtf = DateTimeFormat.forPattern("HHmm");
        return LocalTime.parse(reader.nextString(), dtf);
    }

    throw new UnsupportedOperationException("Unsupported format");
}

From source file:com.google.maps.internal.PriceLevelAdapter.java

License:Open Source License

@Override
public PriceLevel read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();/*from ww w  . jav  a2s. c o  m*/
        return null;
    }

    if (reader.peek() == JsonToken.NUMBER) {
        int priceLevel = reader.nextInt();

        switch (priceLevel) {
        case 0:
            return PriceLevel.FREE;
        case 1:
            return PriceLevel.INEXPENSIVE;
        case 2:
            return PriceLevel.MODERATE;
        case 3:
            return PriceLevel.EXPENSIVE;
        case 4:
            return PriceLevel.VERY_EXPENSIVE;
        }
    }

    return PriceLevel.UNKNOWN;
}

From source file:com.google.maps.internal.SafeEnumAdapter.java

License:Open Source License

@Override
public E read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();// w  w w.  j  a v  a  2 s  .  com
        return null;
    }
    String value = reader.nextString();
    try {
        return Enum.valueOf(clazz, value.toUpperCase(Locale.ENGLISH));
    } catch (IllegalArgumentException iae) {
        log.warning(String.format("Unknown type for enum %s: '%s'", clazz.getName(), value));
        return unknownValue;
    }
}

From source file:com.google.maps.internal.TravelModeAdapter.java

License:Open Source License

/**
 * Read a travel mode from a Directions API result and convert it to a {@link TravelMode}.
 *///from   w w  w .  j a  v  a  2  s.  co m
@Override
public TravelMode read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }

    return TravelMode.lookup(reader.nextString());
}