| /* |
| * 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.Calendar; |
| 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.URLStrategy; |
| import org.apache.roller.weblogger.business.WebloggerFactory; |
| import org.apache.roller.weblogger.pojos.User; |
| import org.apache.roller.weblogger.pojos.WeblogEntry; |
| import org.apache.roller.weblogger.pojos.Weblog; |
| import org.apache.roller.weblogger.pojos.WeblogEntrySearchCriteria; |
| import org.apache.roller.weblogger.pojos.wrapper.WeblogEntryWrapper; |
| |
| |
| /** |
| * Simple pager for list of weblog entries. |
| */ |
| public class WeblogEntriesListPager extends AbstractPager { |
| |
| private static Log log = LogFactory.getLog(WeblogEntriesListPager.class); |
| |
| private String locale = null; |
| private int sinceDays = -1; |
| private int length = 0; |
| |
| private Weblog queryWeblog = null; |
| private User queryUser = null; |
| private String queryCat = null; |
| private List<String> queryTags = null; |
| |
| // entries for the pager |
| private List<WeblogEntryWrapper> entries; |
| |
| // are there more entries? |
| private boolean more = false; |
| |
| // most recent update time of current set of entries |
| private Date lastUpdated = null; |
| |
| |
| public WeblogEntriesListPager( |
| URLStrategy strat, |
| String baseUrl, |
| Weblog queryWeblog, |
| User queryUser, |
| String queryCat, |
| List<String> queryTags, |
| String locale, |
| int sinceDays, |
| int pageNum, |
| int length) { |
| |
| super(strat, baseUrl, pageNum); |
| |
| // store the data |
| this.queryWeblog = queryWeblog; |
| this.queryUser = queryUser; |
| this.queryCat = queryCat; |
| this.queryTags = queryTags; |
| this.locale = locale; |
| this.sinceDays = sinceDays; |
| this.length = length; |
| |
| // initialize the pager collection |
| getItems(); |
| } |
| |
| |
| public List<WeblogEntryWrapper> getItems() { |
| |
| if (entries == null) { |
| // calculate offset |
| int offset = getPage() * length; |
| |
| List<WeblogEntryWrapper> results = new ArrayList<WeblogEntryWrapper>(); |
| |
| Date startDate = null; |
| if(sinceDays > 0) { |
| Calendar cal = Calendar.getInstance(); |
| cal.setTime(new Date()); |
| cal.add(Calendar.DATE, -1 * sinceDays); |
| startDate = cal.getTime(); |
| } |
| |
| try { |
| WeblogEntrySearchCriteria wesc = new WeblogEntrySearchCriteria(); |
| wesc.setWeblog(queryWeblog); |
| wesc.setUser(queryUser); |
| wesc.setStartDate(startDate); |
| wesc.setCatName(queryCat); |
| wesc.setTags(queryTags); |
| wesc.setStatus(WeblogEntry.PubStatus.PUBLISHED); |
| wesc.setLocale(locale); |
| wesc.setOffset(offset); |
| wesc.setMaxResults(length+1); |
| List<WeblogEntry> rawEntries = WebloggerFactory.getWeblogger() |
| .getWeblogEntryManager().getWeblogEntries(wesc); |
| |
| // wrap the results |
| int count = 0; |
| for (WeblogEntry entry : rawEntries) { |
| if (count++ < length) { |
| results.add(WeblogEntryWrapper.wrap(entry, urlStrategy)); |
| } |
| } |
| if (rawEntries.size() > length) { |
| more = true; |
| } |
| |
| } catch (Exception e) { |
| log.error("ERROR: fetching weblog entries list", e); |
| } |
| |
| entries = results; |
| } |
| |
| return entries; |
| } |
| |
| |
| @Override |
| public boolean hasMoreItems() { |
| return more; |
| } |
| |
| /** 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<WeblogEntryWrapper> items = getItems(); |
| if (getItems() != null && getItems().size() > 0) { |
| Timestamp newest = (getItems().get(0)).getUpdateTime(); |
| for (WeblogEntryWrapper e : items) { |
| if (e.getUpdateTime().after(newest)) { |
| newest = e.getPubTime(); |
| } |
| } |
| lastUpdated = new Date(newest.getTime()); |
| } else { |
| // no update so we assume it's brand new |
| lastUpdated = new Date(); |
| } |
| } |
| return lastUpdated; |
| } |
| } |