/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.cookie;
import java.util.Comparator;
import java.util.Date;
import org.apache.http.annotation.Immutable;
import org.apache.http.impl.cookie.BasicClientCookie;
/**
* This cookie comparator ensures that cookies with longer paths take precedence over
* cookies with shorter path. Among cookies with equal path length cookies with ealier
* creation time take precedence over cookies with later creation time
*
* @since 4.4
*/
@Immutable
public class CookiePriorityComparator implements Comparator<Cookie> {
public static final CookiePriorityComparator INSTANCE = new CookiePriorityComparator();
private int getPathLength(final Cookie cookie) {
final String path = cookie.getPath();
return path != null ? path.length() : 1;
}
@Override
public int compare(final Cookie c1, final Cookie c2) {
final int l1 = getPathLength(c1);
final int l2 = getPathLength(c2);
//TODO: update this class once Cookie interface has been expended with #getCreationTime method
final int result = l2 - l1;
if (result == 0 && c1 instanceof BasicClientCookie && c2 instanceof BasicClientCookie) {
final Date d1 = ((BasicClientCookie) c1).getCreationDate();
final Date d2 = ((BasicClientCookie) c2).getCreationDate();
if (d1 != null && d2 != null) {
return (int) (d1.getTime() - d2.getTime());
}
}
return result;
}
}