Java tutorial
/* * WeatherModuleGenerator.java * * This library is provided under dual licenses. * You may choose the terms of the Lesser General Public License or the Apache * License at your discretion. * * Copyright (C) 2008 Robert Cooper, Temple of the Screaming Penguin * * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * * 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.rometools.modules.yahooweather.io; import java.text.SimpleDateFormat; import java.util.HashSet; import java.util.Locale; import java.util.Set; import org.jdom2.Element; import org.jdom2.Namespace; import com.rometools.modules.yahooweather.YWeatherModule; import com.rometools.modules.yahooweather.YWeatherModuleImpl; import com.rometools.modules.yahooweather.types.Forecast; import com.rometools.rome.feed.module.Module; import com.rometools.rome.io.ModuleGenerator; /** * The ModuleGenerator implementation for the Yahoo Weather plug in. * * @version $Revision: 1.3 $ * @author <a href="mailto:cooper@screaming-penguin.com">Robert "kebernet" Cooper</a> */ public class WeatherModuleGenerator implements ModuleGenerator { private static final Namespace NS = Namespace.getNamespace("yweather", YWeatherModule.URI); private static final SimpleDateFormat TIME_ONLY = new SimpleDateFormat("h:mm a", Locale.US); private static final SimpleDateFormat LONG_DATE = new SimpleDateFormat("EEE, d MMM yyyy h:mm a zzz", Locale.US); private static final SimpleDateFormat SHORT_DATE = new SimpleDateFormat("d MMM yyyy", Locale.US); /** Creates a new instance of SlashModuleGenerator. */ public WeatherModuleGenerator() { } @Override public void generate(final Module module, final Element element) { if (!(module instanceof YWeatherModuleImpl)) { return; } final YWeatherModuleImpl weather = (YWeatherModuleImpl) module; if (weather.getAstronomy() != null) { final Element astro = new Element("astronomy", WeatherModuleGenerator.NS); if (weather.getAstronomy().getSunrise() != null) { astro.setAttribute("sunrise", TIME_ONLY.format(weather.getAstronomy().getSunrise()).toLowerCase()); } if (weather.getAstronomy().getSunrise() != null) { astro.setAttribute("sunset", TIME_ONLY.format(weather.getAstronomy().getSunset()).toLowerCase()); } element.addContent(astro); } if (weather.getAtmosphere() != null) { final Element atmos = new Element("atmosphere", WeatherModuleGenerator.NS); atmos.setAttribute("humidity", Integer.toString(weather.getAtmosphere().getHumidity())); atmos.setAttribute("visibility", Integer.toString((int) (weather.getAtmosphere().getVisibility() * 100d))); atmos.setAttribute("pressure", Double.toString(weather.getAtmosphere().getPressure())); if (weather.getAtmosphere().getChange() != null) { atmos.setAttribute("rising", Integer.toString(weather.getAtmosphere().getChange().getCode())); } element.addContent(atmos); } if (weather.getCondition() != null) { final Element condition = new Element("condition", WeatherModuleGenerator.NS); if (weather.getCondition().getText() != null) { condition.setAttribute("text", weather.getCondition().getText()); } if (weather.getCondition().getCode() != null) { condition.setAttribute("code", Integer.toString(weather.getCondition().getCode().getCode())); } if (weather.getCondition().getDate() != null) { condition.setAttribute("date", LONG_DATE.format(weather.getCondition().getDate()) .replaceAll("AM", "am").replaceAll("PM", "pm")); } condition.setAttribute("temp", Integer.toString(weather.getCondition().getTemperature())); element.addContent(condition); } if (weather.getLocation() != null) { final Element location = new Element("location", WeatherModuleGenerator.NS); if (weather.getLocation().getCity() != null) { location.setAttribute("city", weather.getLocation().getCity()); } if (weather.getLocation().getRegion() != null) { location.setAttribute("region", weather.getLocation().getRegion()); } if (weather.getLocation().getCountry() != null) { location.setAttribute("country", weather.getLocation().getCountry()); } element.addContent(location); } if (weather.getUnits() != null) { final Element units = new Element("units", WeatherModuleGenerator.NS); if (weather.getUnits().getDistance() != null) { units.setAttribute("distance", weather.getUnits().getDistance()); } if (weather.getUnits().getPressure() != null) { units.setAttribute("pressure", weather.getUnits().getPressure()); } if (weather.getUnits().getSpeed() != null) { units.setAttribute("speed", weather.getUnits().getSpeed()); } if (weather.getUnits().getTemperature() != null) { units.setAttribute("temperature", weather.getUnits().getTemperature()); } element.addContent(units); } if (weather.getWind() != null) { final Element wind = new Element("wind", WeatherModuleGenerator.NS); wind.setAttribute("chill", Integer.toString(weather.getWind().getChill())); wind.setAttribute("direction", Integer.toString(weather.getWind().getDirection())); wind.setAttribute("speed", Integer.toString(weather.getWind().getSpeed())); element.addContent(wind); } if (weather.getForecasts() != null) { for (int i = 0; i < weather.getForecasts().length; i++) { final Element forecast = new Element("forecast", WeatherModuleGenerator.NS); final Forecast f = weather.getForecasts()[i]; if (f.getCode() != null) { forecast.setAttribute("code", Integer.toString(f.getCode().getCode())); } if (f.getDate() != null) { forecast.setAttribute("date", SHORT_DATE.format(f.getDate())); } if (f.getDay() != null) { forecast.setAttribute("day", f.getDay()); } if (f.getText() != null) { forecast.setAttribute("text", f.getText()); } forecast.setAttribute("high", Integer.toString(f.getHigh())); forecast.setAttribute("low", Integer.toString(f.getLow())); element.addContent(forecast); } } } protected Element generateSimpleElement(final String name, final String value) { final Element element = new Element(name, WeatherModuleGenerator.NS); element.addContent(value); return element; } @Override public Set<Namespace> getNamespaces() { final Set<Namespace> set = new HashSet<Namespace>(); set.add(WeatherModuleGenerator.NS); return set; } @Override public String getNamespaceUri() { return YWeatherModule.URI; } }