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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  }