com.google.maps.internal.DurationAdapter.java Source code

Introduction

Here is the source code for com.google.maps.internal.DurationAdapter.java

Source

/*
 * 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.Duration;

import java.io.IOException;

/**
 * This class handles conversion from JSON to {@link Distance}.
 *
 * <p>Please see
 * {@url https://google-gson.googlecode.com/svn/trunk/gson/docs/javadocs/com/google/gson/TypeAdapter.html}
 * for more detail.
 */
public class DurationAdapter extends TypeAdapter<Duration> {

    /**
     * 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>
     * {
     *   "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;
    }

    /**
     * This method is not implemented.
     */
    @Override
    public void write(JsonWriter writer, Duration value) throws IOException {
        throw new UnsupportedOperationException("Unimplemented method");
    }

}