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/*
 * ====================================================================
 * 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
 * .
 *
 */

package org.apache.http.impl.cookie;

import org.apache.http.annotation.Contract;
import org.apache.http.annotation.Obsolete;
import org.apache.http.annotation.ThreadingBehavior;
import org.apache.http.cookie.CookieSpec;
import org.apache.http.cookie.CookieSpecProvider;
import org.apache.http.protocol.HttpContext;

/**
 * {@link org.apache.http.cookie.CookieSpecProvider} implementation that provides an instance of
 * {@link NetscapeDraftSpec}. The instance returned by this factory
 * can be shared by multiple threads.
 * 
 * Rendered obsolete by {@link org.apache.http.impl.cookie.RFC6265CookieSpecProvider}
 *
 * @since 4.4
 * @see org.apache.http.impl.cookie.RFC6265CookieSpecProvider
 */
@Obsolete
@Contract(threading = ThreadingBehavior.IMMUTABLE)
public class NetscapeDraftSpecProvider implements CookieSpecProvider {

    private final String[] datepatterns;

    private volatile CookieSpec cookieSpec;

    public NetscapeDraftSpecProvider(final String[] datepatterns) {
        super();
        this.datepatterns = datepatterns;
    }

    public NetscapeDraftSpecProvider() {
        this(null);
    }

    @Override
    public CookieSpec create(final HttpContext context) {
        if (cookieSpec == null) {
            synchronized (this) {
                if (cookieSpec == null) {
                    this.cookieSpec = new NetscapeDraftSpec(this.datepatterns);
                }
            }
        }
        return this.cookieSpec;
    }

}