org.mixare.data.convert.WikiDataProcessor.java Source code

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Here is the source code for org.mixare.data.convert.WikiDataProcessor.java

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/*
 * Copyright (C) 2012- Peer internet solutions & Finalist IT Group
 * 
 * This file is part of mixare.
 * 
 * This program is free software: you can redistribute it and/or modify it 
 * under the terms of the GNU General Public License as published by 
 * the Free Software Foundation, either version 3 of the License, or 
 * (at your option) any later version. 
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License 
 * for more details. 
 * 
 * You should have received a copy of the GNU General Public License along with 
 * this program. If not, see <http://www.gnu.org/licenses/>
 */
package org.mixare.data.convert;

import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.mixare.MixView;
import org.mixare.POIMarker;
import org.mixare.data.DataHandler;
import org.mixare.data.DataSource;
import org.mixare.lib.HtmlUnescape;
import org.mixare.data.convert.DataProcessor;
import org.mixare.lib.marker.Marker;

import android.util.Log;

/**
 * A data processor for wikipedia urls or data, Responsible for converting raw data (to json and then) to marker data.
 * @author A. Egal
 */
public class WikiDataProcessor extends DataHandler implements DataProcessor {

    public static final int MAX_JSON_OBJECTS = 1000;

    @Override
    public String[] getUrlMatch() {
        String[] str = { "wiki" };
        return str;
    }

    @Override
    public String[] getDataMatch() {
        String[] str = { "wiki" };
        return str;
    }

    @Override
    public boolean matchesRequiredType(String type) {
        if (type.equals(DataSource.TYPE.WIKIPEDIA.name())) {
            return true;
        }
        return false;
    }

    @Override
    public List<Marker> load(String rawData, int taskId, int colour) throws JSONException {
        List<Marker> markers = new ArrayList<Marker>();
        JSONObject root = convertToJSON(rawData);
        JSONArray dataArray = root.getJSONArray("geonames");
        int top = Math.min(MAX_JSON_OBJECTS, dataArray.length());

        for (int i = 0; i < top; i++) {
            JSONObject jo = dataArray.getJSONObject(i);

            Marker ma = null;
            if (jo.has("title") && jo.has("lat") && jo.has("lng") && jo.has("elevation")
                    && jo.has("wikipediaUrl")) {

                Log.v(MixView.TAG, "processing Wikipedia JSON object");

                //no unique ID is provided by the web service according to http://www.geonames.org/export/wikipedia-webservice.html
                ma = new POIMarker("", HtmlUnescape.unescapeHTML(jo.getString("title"), 0), jo.getDouble("lat"),
                        jo.getDouble("lng"), jo.getDouble("elevation"), "http://" + jo.getString("wikipediaUrl"),
                        taskId, colour);
                markers.add(ma);
            }
        }
        return markers;
    }

    private JSONObject convertToJSON(String rawData) {
        try {
            return new JSONObject(rawData);
        } catch (JSONException e) {
            throw new RuntimeException(e);
        }
    }

}