/core/src/main/java/org/b3log/solo/util/comparator/ArticleUpdateDateComparator.java
Java | 49 lines | 20 code | 5 blank | 24 comment | 0 complexity | 4c25f75fc3af5d31fa3515f66c0ebf04 MD5 | raw file
Possible License(s): Apache-2.0, LGPL-2.1
1/* 2 * Copyright (c) 2009, 2010, 2011, 2012, B3log Team 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16package org.b3log.solo.util.comparator; 17 18import java.util.Comparator; 19import java.util.Date; 20import org.b3log.solo.model.Article; 21import org.json.JSONObject; 22 23/** 24 * Article comparator by update date. 25 * 26 * @author <a href="mailto:DL88250@gmail.com">Liang Ding</a> 27 * @version 1.0.0.1, Dec 30, 2010 28 */ 29public final class ArticleUpdateDateComparator 30 implements Comparator<JSONObject> { 31 32 /** 33 * Package default constructor. 34 */ 35 ArticleUpdateDateComparator() { 36 } 37 38 @Override 39 public int compare(final JSONObject article1, final JSONObject article2) { 40 try { 41 final Date date1 = (Date) article1.get(Article.ARTICLE_UPDATE_DATE); 42 final Date date2 = (Date) article2.get(Article.ARTICLE_UPDATE_DATE); 43 44 return date2.compareTo(date1); 45 } catch (final Exception e) { 46 throw new IllegalStateException(e); 47 } 48 } 49}