1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.http.api;
21
22 /**
23 * Type safe enumeration representing HTTP protocol version
24 *
25 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
26 */
27 public enum HttpVersion {
28 /**
29 * HTTP 1/1
30 */
31 HTTP_1_1("HTTP/1.1"),
32
33 /**
34 * HTTP 1/0
35 */
36 HTTP_1_0("HTTP/1.0");
37
38 private final String value;
39
40 private HttpVersion(String value) {
41 this.value = value;
42 }
43
44 /**
45 * Returns the {@link HttpVersion} instance from the specified string.
46 *
47 * @param string The String contaoning the HTTP version
48 * @return The version, or <code>null</code> if no version is found
49 */
50 public static HttpVersion fromString(String string) {
51 if (HTTP_1_1.toString().equalsIgnoreCase(string)) {
52 return HTTP_1_1;
53 }
54
55 if (HTTP_1_0.toString().equalsIgnoreCase(string)) {
56 return HTTP_1_0;
57 }
58
59 return null;
60 }
61
62 /**
63 * @return A String representation of this version
64 */
65 @Override
66 public String toString() {
67 return value;
68 }
69
70 }