1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import java.util.ArrayList;

    25 import java.util.List;

    26 import java.util.Map;

    27 import java.util.Objects;

    28 import java.util.TreeMap;

    29 import jdk.incubator.http.HttpHeaders;

    30 

    31 /**

    32  * An HttpHeaders consisting of the given name value pairs.

    33  */

    34 public class FixedHttpHeaders extends HttpHeaders {

    35 

    36     private final Map<String, List<String>> map =

    37             new TreeMap<>(String.CASE_INSENSITIVE_ORDER);

    38 

    39     @Override

    40     public Map<String, List<String>> map() {

    41         return map;

    42     }

    43 

    44     /**

    45      * Creates an HttpHeaders of the given name value pairs.

    46      */

    47     public static HttpHeaders of(String... params) {

    48         Objects.requireNonNull(params);

    49         if ((params.length & 0x1) != 0)

    50             throw new IllegalArgumentException("odd number of params");

    51         FixedHttpHeaders headers = new FixedHttpHeaders();

    52         for (int i = 0; i < params.length; i += 2) {

    53             String name = params[i];

    54             String value = params[i + 1];

    55             headers.map.computeIfAbsent(name, k -> new ArrayList<>(1))

    56                        .add(value);

    57         }

    58         return headers;

    59     }

    60 }