/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.googlecode.mashups.services.yahoo.impl;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.List;
import com.googlecode.mashups.services.common.ServiceParameter;
import com.googlecode.mashups.services.common.ServiceParametersUtility;
import com.googlecode.mashups.services.yahoo.api.YahooWeatherService;
import com.googlecode.mashups.services.yahoo.api.YahooWeatherServiceStatus;
import com.googlecode.mashups.services.yahoo.exceptions.InvalidLocationException;
import com.sun.syndication.feed.synd.SyndEntry;
import com.sun.syndication.feed.synd.SyndFeed;
import com.sun.syndication.io.SyndFeedInput;
public class YahooWeatherServiceImpl implements YahooWeatherService {
public static YahooWeatherService getInstance() {
return yahooWeatherService;
}
public YahooWeatherServiceStatus getWeatherStatus(List<ServiceParameter> parameters) throws InvalidLocationException, Exception {
URL feedUrl = new URL(YAHOO_WEATHER_SERVICE_URL
+ "?"
+ ServiceParametersUtility.toParametersString(parameters));
SyndFeedInput input = new SyndFeedInput();
SyndFeed feed = input.build(new InputStreamReader(feedUrl.openStream()));
YahooWeatherServiceStatus weatherServiceStatus = new YahooWeatherServiceStatus();
if (feed.getEntries() != null && feed.getEntries().size() > 0) {
SyndEntry entry = ((SyndEntry) feed.getEntries().get(0));
String title = entry.getTitle();
String description = entry.getDescription().getValue();
if (description.indexOf(RESPONSE_INVALID_KEYWORD) >= 0) {
throw new InvalidLocationException(RESPONSE_INVALID_LOCATION);
}
weatherServiceStatus.setTitle(title);
weatherServiceStatus.setDescription(description);
}
return weatherServiceStatus;
}
private YahooWeatherServiceImpl() {
}
private static YahooWeatherService yahooWeatherService = new YahooWeatherServiceImpl();
}