com.google.maps.internal.DistanceAdapter Maven / Gradle / Ivy
Show all versions of google-maps-services Show documentation
/*
* Copyright 2014 Google Inc. All rights reserved.
*
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
* file except in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under
* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
* ANY KIND, either express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.google.maps.internal;
import com.google.gson.TypeAdapter;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonToken;
import com.google.gson.stream.JsonWriter;
import com.google.maps.model.Distance;
import java.io.IOException;
/**
* This class handles conversion from JSON to {@link Distance}.
*
* Please see GSON
* Type Adapter for more detail.
*/
public class DistanceAdapter extends TypeAdapter {
/**
* Read a distance object from a Directions API result and convert it to a {@link Distance}.
*
* We are expecting to receive something akin to the following:
*
*
* {
* "value": 207, "text": "0.1 mi"
* }
*
*/
@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;
}
/** This method is not implemented. */
@Override
public void write(JsonWriter writer, Distance value) throws IOException {
throw new UnsupportedOperationException("Unimplemented method");
}
}