| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. 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. For additional information regarding |
| * copyright in this work, please see the NOTICE file in the top level |
| * directory of this distribution. |
| */ |
| |
| package org.apache.roller.weblogger.ui.rendering.pagers; |
| |
| import java.sql.Timestamp; |
| import java.util.ArrayList; |
| import java.util.Date; |
| import java.util.List; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.roller.weblogger.business.MediaFileManager; |
| import org.apache.roller.weblogger.business.URLStrategy; |
| import org.apache.roller.weblogger.business.WebloggerFactory; |
| import org.apache.roller.weblogger.pojos.MediaFile; |
| |
| |
| /** |
| * Paging through a collection of media files. |
| */ |
| public class MediaFilesPager extends AbstractPager { |
| |
| private static Log log = LogFactory.getLog(MediaFilesPager.class); |
| private int length = 0; |
| |
| // the collection for the pager |
| private List<MediaFile> mediaFiles; |
| |
| // most recent update time of current set of entries |
| private Date lastUpdated = null; |
| |
| public MediaFilesPager( |
| URLStrategy strat, |
| String baseUrl, |
| int page, |
| int length) { |
| |
| super(strat, baseUrl, page); |
| this.length = length; |
| |
| // initialize the collection |
| getItems(); |
| } |
| |
| |
| public List<MediaFile> getItems() { |
| |
| if (this.mediaFiles == null) { |
| // calculate offset |
| //int offset = getPage() * length; |
| |
| List<MediaFile> results = new ArrayList<MediaFile>(); |
| |
| try { |
| MediaFileManager mgr = WebloggerFactory.getWeblogger().getMediaFileManager(); |
| results = mgr.fetchRecentPublicMediaFiles(length); |
| } catch (Exception e) { |
| log.error("ERROR: fetching comment list", e); |
| } |
| this.mediaFiles = results; |
| } |
| |
| return this.mediaFiles; |
| } |
| |
| |
| @Override |
| public boolean hasMoreItems() { |
| return false; |
| } |
| |
| /** Get last updated time from items in pager */ |
| public Date getLastUpdated() { |
| if (lastUpdated == null) { |
| // feeds are sorted by pubtime, so first might not be last updated |
| List<MediaFile> items = getItems(); |
| if (items != null && items.size() > 0) { |
| Timestamp newest = items.get(0).getLastUpdated(); |
| for (MediaFile file : items) { |
| if (file.getLastUpdated().after(newest)) { |
| newest = file.getLastUpdated(); |
| } |
| } |
| lastUpdated = new Date(newest.getTime()); |
| } else { |
| // no update so we assume it's brand new |
| lastUpdated = new Date(); |
| } |
| } |
| return lastUpdated; |
| } |
| } |
| |