001/* 002 * ==================================================================== 003 * Licensed to the Apache Software Foundation (ASF) under one 004 * or more contributor license agreements. See the NOTICE file 005 * distributed with this work for additional information 006 * regarding copyright ownership. The ASF licenses this file 007 * to you under the Apache License, Version 2.0 (the 008 * "License"); you may not use this file except in compliance 009 * with the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, 014 * software distributed under the License is distributed on an 015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 016 * KIND, either express or implied. See the License for the 017 * specific language governing permissions and limitations 018 * under the License. 019 * ==================================================================== 020 * 021 * This software consists of voluntary contributions made by many 022 * individuals on behalf of the Apache Software Foundation. For more 023 * information on the Apache Software Foundation, please see 024 * <http://www.apache.org/>. 025 * 026 */ 027package org.apache.http.impl.client; 028 029import org.apache.http.annotation.Contract; 030import org.apache.http.annotation.ThreadingBehavior; 031import org.apache.http.client.UserTokenHandler; 032import org.apache.http.protocol.HttpContext; 033 034/** 035 * Noop implementation of {@link UserTokenHandler} that always returns {@code null}. 036 * 037 * @since 4.3 038 */ 039@Contract(threading = ThreadingBehavior.IMMUTABLE) 040public class NoopUserTokenHandler implements UserTokenHandler { 041 042 public static final NoopUserTokenHandler INSTANCE = new NoopUserTokenHandler(); 043 044 @Override 045 public Object getUserToken(final HttpContext context) { 046 return null; 047 } 048 049}