com.controlj.addon.weather.noaa.DocumentLoader.java Source code

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Here is the source code for com.controlj.addon.weather.noaa.DocumentLoader.java

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/*
 * Copyright (c) 2011 Automated Logic Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.controlj.addon.weather.noaa;

import com.controlj.addon.weather.service.WeatherServiceException;
import com.controlj.addon.weather.util.HTTPHelper;
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URIUtils;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.message.BasicNameValuePair;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.io.SAXReader;

import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.concurrent.atomic.AtomicReference;

public class DocumentLoader {
    private final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
    private final AtomicReference<Document> weatherStationsRef = new AtomicReference<Document>();

    public Document loadZipcodeDoc(String zipCode) throws WeatherServiceException {
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("listZipCodeList", zipCode);
        try {
            return new HTTPHelper().readDocument("http", "weather.gov", -1,
                    "/forecasts/xml/sample_products/browser_interface/ndfdXMLclient.php", params);
        } catch (Exception e) {
            throw new WeatherServiceException(e.getMessage(), e);
        }
    }

    public Document getCurrentObs(String stationID) throws WeatherServiceException {
        try {
            return new HTTPHelper().readDocument("http", "weather.gov", -1,
                    "/xml/current_obs/" + stationID + ".xml", null);
        } catch (Exception e) {
            throw new WeatherServiceException(e.getMessage(), e);
        }
    }

    public Document getForecast(float latitude, float longitude, int numDays, boolean isMetric)
            throws WeatherServiceException {
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("lat", Float.toString(latitude));
        params.put("lon", Float.toString(longitude));
        params.put("startDate", dateFormat.format(new Date()));
        params.put("numDays", Integer.toString(numDays));
        params.put("format", "24 hourly");
        params.put("Unit", isMetric ? "m" : "e");
        try {
            return new HTTPHelper().readDocument("http", "graphical.weather.gov", -1,
                    "/xml/sample_products/browser_interface/ndfdBrowserClientByDay.php", params);
        } catch (Exception e) {
            throw new WeatherServiceException(e.getMessage(), e);
        }
    }

    public Document getWeatherStationsDoc() throws WeatherServiceException {
        Document weatherStations = weatherStationsRef.get();
        if (weatherStations == null) {
            try {
                weatherStations = new HTTPHelper().readDocument("http", "www.weather.gov", -1,
                        "/xml/current_obs/index.xml", null);
                weatherStationsRef.set(weatherStations);
            } catch (Exception e) {
                throw new WeatherServiceException("Internal error constructing URI", e);
            }
        }
        return weatherStations;
    }
}