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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.coap;
21  
22  /**
23   * Type of CoAP message :
24   * <ul>
25   * <li>CONFIMABLE : need to be confirmed by a ACK
26   * <li>NON_CONFIRMABLE : fire and forget message
27   * <li>ACK : confirmation of a CONFIRMABLE message
28   * <li>RESET : to reset the session (see the RFC for details)
29   * </ul>
30   * 
31   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
32   */
33  public enum MessageType {
34      CONFIRMABLE(0), NON_CONFIRMABLE(1), ACK(2), RESET(3);
35  
36      private final int code;
37  
38      private MessageType(int code) {
39          this.code = code;
40      }
41  
42      /**
43       * @return the numeric code for this message type
44       */
45      public int getCode() {
46          return code;
47      }
48  
49      /**
50       * Find the {@link MessageType} for the given value code (<code>null</code> if not found)
51       */
52      public static MessageType fromCode(int code) {
53          for (MessageType t : MessageType.values()) {
54              if (t.getCode() == code) {
55                  return t;
56              }
57          }
58          return null;
59      }
60  }