org.kuali.mobility.itnotices.service.ITNoticesServiceImpl.java Source code

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Here is the source code for org.kuali.mobility.itnotices.service.ITNoticesServiceImpl.java

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/**
 * Copyright 2011 The Kuali Foundation Licensed under the
 * Educational Community 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.osedu.org/licenses/ECL-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 org.kuali.mobility.itnotices.service;

import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.kuali.mobility.itnotices.entity.ITNotice;
import org.springframework.stereotype.Service;

import flexjson.JSONSerializer;

@Service
public class ITNoticesServiceImpl implements ITNoticesService {

    private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(ITNoticesServiceImpl.class);

    public List<ITNotice> findAllITNotices() {
        return getITNoticesFromFeed();
    }

    public String toJson(Collection<ITNotice> collection) {
        return new JSONSerializer().exclude("*.class").serialize(collection);
    }

    private List<ITNotice> getITNoticesFromFeed() {
        List<ITNotice> notices = new ArrayList<ITNotice>();
        SAXBuilder builder = new SAXBuilder();
        Document doc = null;
        URL urlObj;
        try {
            urlObj = new URL("http://itnotices.iu.edu/rss.aspx");
            URLConnection urlConnection = urlObj.openConnection();
            urlConnection.setConnectTimeout(5000);
            urlConnection.setReadTimeout(5000);
            urlConnection.connect();
            doc = builder.build(urlConnection.getInputStream());

            if (doc != null) {
                Element root = doc.getRootElement();
                List items = root.getChild("channel").getChildren("item");
                for (Iterator iterator = items.iterator(); iterator.hasNext();) {
                    Element item = (Element) iterator.next();
                    String services = "";
                    List service = item.getChildren("service");
                    for (Iterator iterator2 = service.iterator(); iterator2.hasNext();) {
                        Element s = (Element) iterator2.next();
                        services += s.getContent(0).getValue() + ", ";
                    }
                    if (services.endsWith(", ")) {
                        services = services.substring(0, services.length() - 2);
                    }
                    ITNotice notice = new ITNotice(item.getChildTextTrim("lastUpdated"),
                            item.getChildTextTrim("noticeType"), item.getChildTextTrim("title"), services,
                            item.getChildTextTrim("message"));
                    determineImage(notice);
                    notices.add(notice);
                }
            }
        } catch (Exception e) {
            LOG.error(e.getMessage(), e);
        }

        return notices;
    }

    private void determineImage(ITNotice notice) {
        if ("Service News".equals(notice.getNoticeType())) {
            notice.setImageUrl("./images/itnotices/news.png");
        } else if ("Announcement".equals(notice.getNoticeType())) {
            notice.setImageUrl("./images/itnotices/announcement.png");
        } else if ("Alert".equals(notice.getNoticeType())) {
            notice.setImageUrl("./images/itnotices/error.png");
        } else if ("Key Alert".equals(notice.getNoticeType())) {
            notice.setImageUrl("./images/itnotices/critical.png");
        } else if ("Maintenance".equals(notice.getNoticeType())) {
            notice.setImageUrl("./images/itnotices/warning.png");
        }
    }

}