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

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

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/*
 * 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.TravelMode;

import java.io.IOException;

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

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

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

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

}