/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/cookie/CookieIdentityComparator.java $
* $Revision: 618308 $
* $Date: 2008-02-04 07:51:19 -0800 (Mon, 04 Feb 2008) $
*
* ====================================================================
* 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.io.Serializable;
import java.util.Comparator;
/**
* This cookie comparator can be used to compare identity of cookies.
*
* <p>
* Cookies are considered identical if their names are equal and
* their domain attributes match ignoring case.
* </p>
*
* @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
*/
public class CookieIdentityComparator implements Serializable, Comparator<Cookie> {
private static final long serialVersionUID = 4466565437490631532L;
public int compare(final Cookie c1, final Cookie c2) {
int res = c1.getName().compareTo(c2.getName());
if (res == 0) {
// do not differentiate empty and null domains
String d1 = c1.getDomain();
if (d1 == null) {
d1 = "";
}
String d2 = c2.getDomain();
if (d2 == null) {
d2 = "";
}
res = d1.compareToIgnoreCase(d2);
}
return res;
}
}