The Tor Browser: mobile/android/thirdparty/ch/boye/httpclientandroidlib/protocol/DefaultedHttpContext.java@fc2d59ddac77

     1 /*

     2  * ====================================================================

     3  * Licensed to the Apache Software Foundation (ASF) under one

     4  * or more contributor license agreements.  See the NOTICE file

     5  * distributed with this work for additional information

     6  * regarding copyright ownership.  The ASF licenses this file

     7  * to you under the Apache License, Version 2.0 (the

     8  * "License"); you may not use this file except in compliance

     9  * with the License.  You may obtain a copy of the License at

    10  *

    11  *   http://www.apache.org/licenses/LICENSE-2.0

    12  *

    13  * Unless required by applicable law or agreed to in writing,

    14  * software distributed under the License is distributed on an

    15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

    16  * KIND, either express or implied.  See the License for the

    17  * specific language governing permissions and limitations

    18  * under the License.

    19  * ====================================================================

    20  *

    21  * This software consists of voluntary contributions made by many

    22  * individuals on behalf of the Apache Software Foundation.  For more

    23  * information on the Apache Software Foundation, please see

    24  * <http://www.apache.org/>.

    25  *

    26  */

    28 package ch.boye.httpclientandroidlib.protocol;

    30 /**

    31  * {@link HttpContext} implementation that delegates resolution of an attribute

    32  * to the given default {@link HttpContext} instance if the attribute is not

    33  * present in the local one. The state of the local context can be mutated,

    34  * whereas the default context is treated as read-only.

    35  *

    36  * @since 4.0

    37  */

    38 public final class DefaultedHttpContext implements HttpContext {

    40     private final HttpContext local;

    41     private final HttpContext defaults;

    43     public DefaultedHttpContext(final HttpContext local, final HttpContext defaults) {

    44         super();

    45         if (local == null) {

    46             throw new IllegalArgumentException("HTTP context may not be null");

    47         }

    48         this.local = local;

    49         this.defaults = defaults;

    50     }

    52     public Object getAttribute(final String id) {

    53         Object obj = this.local.getAttribute(id);

    54         if (obj == null) {

    55             return this.defaults.getAttribute(id);

    56         } else {

    57             return obj;

    58         }

    59     }

    61     public Object removeAttribute(final String id) {

    62         return this.local.removeAttribute(id);

    63     }

    65     public void setAttribute(final String id, final Object obj) {

    66         this.local.setAttribute(id, obj);

    67     }

    69     public HttpContext getDefaults() {

    70         return this.defaults;

    71     }

    73 }

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