fr.openbike.android.io.RemoteStationsUpdateHandler.java Source code

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Here is the source code for fr.openbike.android.io.RemoteStationsUpdateHandler.java

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/*
 * Copyright 2011 Google Inc.
 *
 * 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 fr.openbike.android.io;

import java.io.IOException;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.xmlpull.v1.XmlPullParser;

import fr.openbike.android.database.OpenBikeDBAdapter;

/**
 * Handle a remote {@link XmlPullParser} that defines a set of {@link Speakers}
 * entries. Assumes that the remote source is a Google Spreadsheet.
 */
public class RemoteStationsUpdateHandler extends JSONHandler {

    public static final String VERSION = "version";
    public static final String STATIONS = "stations";
    public static final String MESSAGE = "message";

    public RemoteStationsUpdateHandler() {
    }

    /** {@inheritDoc} */
    @Override
    public Object parse(JSONObject jsonBikes, OpenBikeDBAdapter dbAdapter) throws JSONException, IOException {
        long version = jsonBikes.getLong(VERSION);
        String message = jsonBikes.optString(MESSAGE);
        JSONArray stations = jsonBikes.optJSONArray(STATIONS);
        if (stations != null) {
            dbAdapter.cleanAndInsertStations(version, stations);
        }
        return "".equals(message) ? null : message;
    }
}