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 */
27
28 package org.apache.http.message;
29
30 import java.io.Serializable;
31
32 import org.apache.http.Header;
33 import org.apache.http.HeaderElement;
34 import org.apache.http.ParseException;
35 import org.apache.http.annotation.Immutable;
36 import org.apache.http.util.Args;
37
38 /**
39 * Basic implementation of {@link Header}.
40 *
41 * @since 4.0
42 */
43 @Immutable
44 public class BasicHeader implements Header, Cloneable, Serializable {
45
46 private static final long serialVersionUID = -5427236326487562174L;
47
48 private final String name;
49 private final String value;
50
51 /**
52 * Constructor with name and value
53 *
54 * @param name the header name
55 * @param value the header value
56 */
57 public BasicHeader(final String name, final String value) {
58 super();
59 this.name = Args.notNull(name, "Name");
60 this.value = value;
61 }
62
63 public String getName() {
64 return this.name;
65 }
66
67 public String getValue() {
68 return this.value;
69 }
70
71 @Override
72 public String toString() {
73 // no need for non-default formatting in toString()
74 return BasicLineFormatter.INSTANCE.formatHeader(null, this).toString();
75 }
76
77 public HeaderElement[] getElements() throws ParseException {
78 if (this.value != null) {
79 // result intentionally not cached, it's probably not used again
80 return BasicHeaderValueParser.parseElements(this.value, null);
81 } else {
82 return new HeaderElement[] {};
83 }
84 }
85
86 @Override
87 public Object clone() throws CloneNotSupportedException {
88 return super.clone();
89 }
90
91 }