/*
* Copyright 2002-2009 the original author or authors.
*
* 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 org.springframework.samples.petclinic.web;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.sun.syndication.feed.atom.Content;
import com.sun.syndication.feed.atom.Entry;
import com.sun.syndication.feed.atom.Feed;
import org.springframework.samples.petclinic.Visit;
import org.springframework.web.servlet.view.feed.AbstractAtomFeedView;
/**
* A view creating a Atom representation from a list of Visit objects.
*
* @author Alef Arendsen
* @author Arjen Poutsma
*/
public class VisitsAtomView extends AbstractAtomFeedView {
@Override
protected void buildFeedMetadata(Map<String, Object> model, Feed feed, HttpServletRequest request) {
feed.setId("tag:springsource.com");
feed.setTitle("Pet Clinic Visits");
@SuppressWarnings("unchecked")
List<Visit> visits = (List<Visit>) model.get("visits");
for (Visit visit : visits) {
Date date = visit.getDate();
if (feed.getUpdated() == null || date.compareTo(feed.getUpdated()) > 0) {
feed.setUpdated(date);
}
}
}
@Override
protected List<Entry> buildFeedEntries(Map<String, Object> model,
HttpServletRequest request, HttpServletResponse response) throws Exception {
@SuppressWarnings("unchecked")
List<Visit> visits = (List<Visit>) model.get("visits");
List<Entry> entries = new ArrayList<Entry>(visits.size());
for (Visit visit : visits) {
Entry entry = new Entry();
String date = String.format("%1$tY-%1$tm-%1$td", visit.getDate());
// see http://diveintomark.org/archives/2004/05/28/howto-atom-id#other
entry.setId(String.format("tag:springsource.com,%s:%d", date, visit.getId()));
entry.setTitle(String.format("%s visit on %s", visit.getPet().getName(), date));
entry.setUpdated(visit.getDate());
Content summary = new Content();
summary.setValue(visit.getDescription());
entry.setSummary(summary);
entries.add(entry);
}
return entries;
}
}