com.microsoft.azure.engagement.ws.AzmeServices.java Source code

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Here is the source code for com.microsoft.azure.engagement.ws.AzmeServices.java

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// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

package com.microsoft.azure.engagement.ws;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
import javax.xml.parsers.ParserConfigurationException;

import com.microsoft.azure.engagement.ws.FeedParser.FeedItem;
import com.microsoft.azure.engagement.ws.VideoParser.VideoItem;
import org.json.JSONException;
import org.xml.sax.SAXException;

public final class AzmeServices {

    private static volatile AzmeServices instance;

    public static final class AsyncTaskResult<T> {

        private T result;

        private Exception error;

        public T getResult() {
            return result;
        }

        public Exception getError() {
            return error;
        }

        public AsyncTaskResult(T result) {
            super();
            this.result = result;
        }

        public AsyncTaskResult(Exception error) {
            super();
            this.error = error;
        }

    }

    /**
     * Returns the AzmeServices object associated with the current class.
     *
     * @return The instance of AzmeService
     */
    public static final AzmeServices getInstance() {
        if (instance == null) {
            synchronized (AzmeServices.class) {
                if (instance == null) {
                    instance = new AzmeServices();
                }
            }
        }
        return instance;
    }

    /**
     * Method that parses the last update
     *
     * @return The list of feeds
     * @throws IOException, ParserConfigurationException, SAXException
     */
    public final List<FeedItem> getLastUpdate(String url)
            throws IOException, ParserConfigurationException, SAXException {
        final HttpURLConnection urlConnection = (HttpURLConnection) new URL(url).openConnection();

        try {
            urlConnection.connect();
            final InputStream inputStream = urlConnection.getInputStream();
            return FeedParser.parse(inputStream);
        } finally {
            if (urlConnection != null) {
                urlConnection.disconnect();
            }
        }
    }

    /**
     * Method that parses the videos
     *
     * @param urlString The urlString
     * @return The list of videos
     * @throws IOException, JSONException
     */
    public final List<VideoItem> getVideos(String urlString) throws IOException, JSONException {
        return VideoParser.parse(urlString);
    }

}