001/* 002 * ==================================================================== 003 * Licensed to the Apache Software Foundation (ASF) under one 004 * or more contributor license agreements. See the NOTICE file 005 * distributed with this work for additional information 006 * regarding copyright ownership. The ASF licenses this file 007 * to you under the Apache License, Version 2.0 (the 008 * "License"); you may not use this file except in compliance 009 * with the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, 014 * software distributed under the License is distributed on an 015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 016 * KIND, either express or implied. See the License for the 017 * specific language governing permissions and limitations 018 * under the License. 019 * ==================================================================== 020 * 021 * This software consists of voluntary contributions made by many 022 * individuals on behalf of the Apache Software Foundation. For more 023 * information on the Apache Software Foundation, please see 024 * <http://www.apache.org/>. 025 * 026 */ 027 028package org.apache.http.cookie; 029 030import java.util.Comparator; 031import java.util.Date; 032 033import org.apache.http.annotation.Contract; 034import org.apache.http.annotation.ThreadingBehavior; 035import org.apache.http.impl.cookie.BasicClientCookie; 036 037/** 038 * This cookie comparator ensures that cookies with longer paths take precedence over 039 * cookies with shorter path. Among cookies with equal path length cookies with ealier 040 * creation time take precedence over cookies with later creation time 041 * 042 * @since 4.4 043 */ 044@Contract(threading = ThreadingBehavior.IMMUTABLE) 045public class CookiePriorityComparator implements Comparator<Cookie> { 046 047 public static final CookiePriorityComparator INSTANCE = new CookiePriorityComparator(); 048 049 private int getPathLength(final Cookie cookie) { 050 final String path = cookie.getPath(); 051 return path != null ? path.length() : 1; 052 } 053 054 @Override 055 public int compare(final Cookie c1, final Cookie c2) { 056 final int l1 = getPathLength(c1); 057 final int l2 = getPathLength(c2); 058 //TODO: update this class once Cookie interface has been expended with #getCreationTime method 059 final int result = l2 - l1; 060 if (result == 0 && c1 instanceof BasicClientCookie && c2 instanceof BasicClientCookie) { 061 final Date d1 = ((BasicClientCookie) c1).getCreationDate(); 062 final Date d2 = ((BasicClientCookie) c2).getCreationDate(); 063 if (d1 != null && d2 != null) { 064 return (int) (d1.getTime() - d2.getTime()); 065 } 066 } 067 return result; 068 } 069 070}