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
37 /**
38 * Basic implementation of {@link Header}.
39 *
40 * @since 4.0
41 */
42 @Immutable
43 public class BasicHeader implements Header, Cloneable, Serializable {
44
45 private static final long serialVersionUID = -5427236326487562174L;
46
47 private final String name;
48 private final String value;
49
50 /**
51 * Constructor with name and value
52 *
53 * @param name the header name
54 * @param value the header value
55 */
56 public BasicHeader(final String name, final String value) {
57 super();
58 if (name == null) {
59 throw new IllegalArgumentException("Name may not be null");
60 }
61 this.name = name;
62 this.value = value;
63 }
64
65 public String getName() {
66 return this.name;
67 }
68
69 public String getValue() {
70 return this.value;
71 }
72
73 @Override
74 public String toString() {
75 // no need for non-default formatting in toString()
76 return BasicLineFormatter.DEFAULT.formatHeader(null, this).toString();
77 }
78
79 public HeaderElement[] getElements() throws ParseException {
80 if (this.value != null) {
81 // result intentionally not cached, it's probably not used again
82 return BasicHeaderValueParser.parseElements(this.value, null);
83 } else {
84 return new HeaderElement[] {};
85 }
86 }
87
88 @Override
89 public Object clone() throws CloneNotSupportedException {
90 return super.clone();
91 }
92
93 }