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Java example source code file (BasicCookieStore.java)

This example source code file (BasicCookieStore.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

arraylist, basiccookiestore, cookieidentitycomparator, date, guardedby, io, iterator, override, serializable, string, threadsafe, util

The BasicCookieStore.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.impl.client;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import org.apache.http.annotation.GuardedBy;
import org.apache.http.annotation.ThreadSafe;

import org.apache.http.client.CookieStore;
import org.apache.http.cookie.Cookie;
import org.apache.http.cookie.CookieIdentityComparator;

/**
 * Default implementation of {@link CookieStore}
 * 
 * 
 * @since 4.0
 */
@ThreadSafe
public class BasicCookieStore implements CookieStore, Serializable {

    private static final long serialVersionUID = -1113466491038527240L;

    @GuardedBy("this")
    private final ArrayList<Cookie> cookies;

    @GuardedBy("this")
    private final Comparator<Cookie> cookieComparator;
    
    // -------------------------------------------------------- Class Variables

    /**
     * Default constructor.
     */
    public BasicCookieStore() {
        super();
        this.cookies = new ArrayList<Cookie>();
        this.cookieComparator = new CookieIdentityComparator();
    }

    /**
     * Adds an {@link Cookie HTTP cookie}, replacing any existing equivalent cookies.
     * If the given cookie has already expired it will not be added, but existing 
     * values will still be removed.
     * 
     * @param cookie the {@link Cookie cookie} to be added
     * 
     * @see #addCookies(Cookie[])
     * 
     */
    public synchronized void addCookie(Cookie cookie) {
        if (cookie != null) {
            // first remove any old cookie that is equivalent
            for (Iterator<Cookie> it = cookies.iterator(); it.hasNext();) {
                if (cookieComparator.compare(cookie, it.next()) == 0) {
                    it.remove();
                    break;
                }
            }
            if (!cookie.isExpired(new Date())) {
                cookies.add(cookie);
            }
        }
    }

    /**
     * Adds an array of {@link Cookie HTTP cookies}. Cookies are added individually and 
     * in the given array order. If any of the given cookies has already expired it will 
     * not be added, but existing values will still be removed.
     * 
     * @param cookies the {@link Cookie cookies} to be added
     * 
     * @see #addCookie(Cookie)
     * 
     */
    public synchronized void addCookies(Cookie[] cookies) {
        if (cookies != null) {
            for (Cookie cooky : cookies) {
                this.addCookie(cooky);
            }
        }
    }

    /**
     * Returns an immutable array of {@link Cookie cookies} that this HTTP
     * state currently contains.
     * 
     * @return an array of {@link Cookie cookies}.
     */
    public synchronized List<Cookie> getCookies() {
        return new ArrayList<Cookie>(this.cookies);
    }

    /**
     * Removes all of {@link Cookie cookies} in this HTTP state
     * that have expired by the specified {@link java.util.Date date}. 
     * 
     * @return true if any cookies were purged.
     * 
     * @see Cookie#isExpired(Date)
     */
    public synchronized boolean clearExpired(final Date date) {
        if (date == null) {
            return false;
        }
        boolean removed = false;
        for (Iterator<Cookie> it = cookies.iterator(); it.hasNext();) {
            if (it.next().isExpired(date)) {
                it.remove();
                removed = true;
            }
        }
        return removed;
    }

    @Override
    public String toString() {
        return cookies.toString();
    }
    
    /**
     * Clears all cookies.
     */
    public synchronized void clear() {
        cookies.clear();
    }
    
}

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