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Java example source code file (CookieIdentityComparator.java)

This example source code file (CookieIdentityComparator.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

comparator, cookie, cookieidentitycomparator, immutable, io, serializable, string, util

The CookieIdentityComparator.java example source code

/*
 * ====================================================================
 * 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;

import org.apache.http.annotation.Immutable;

/**
 * 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.
 *
 * @since 4.0
 */
@Immutable
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 = "";
            } else if (d1.indexOf('.') == -1) {
                d1 = d1 + ".local";
            }
            String d2 = c2.getDomain();
            if (d2 == null) {
                d2 = "";
            } else if (d2.indexOf('.') == -1) {
                d2 = d2 + ".local";
            }
            res = d1.compareToIgnoreCase(d2);
        }
        if (res == 0) {
            String p1 = c1.getPath();
            if (p1 == null) {
                p1 = "/";
            }
            String p2 = c2.getPath();
            if (p2 == null) {
                p2 = "/";
            }
            res = p1.compareTo(p2);
        }
        return res;
    }

}

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