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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.example.sumup.codec;
    21
    22  import java.util.Collections;
    23  import java.util.HashSet;
    24  import java.util.Set;
    25
    26  import org.apache.mina.common.ByteBuffer;
    27  import org.apache.mina.common.IoSession;
    28  import org.apache.mina.example.sumup.message.AbstractMessage;
    29  import org.apache.mina.example.sumup.message.AddMessage;
    30  import org.apache.mina.filter.codec.demux.MessageEncoder;
    31
    32  /**
    33   * A {@link MessageEncoder} that encodes {@link AddMessage}.
    34   *
    35   * @author The Apache Directory Project (mina-dev@directory.apache.org)
    36   * @version $Rev: 555855 $, $Date: 2007-07-13 05:19:00 +0200 (Fri, 13 Jul 2007) $
    37   */
    38  public class AddMessageEncoder extends AbstractMessageEncoder {
    39      private static final Set<Class<?>> TYPES;
    40
    41      static {
    42          Set<Class<?>> types = new HashSet<Class<?>>();
    43          types.add(AddMessage.class);
    44          TYPES = Collections.unmodifiableSet(types);
    45      }
    46
    47      public AddMessageEncoder() {
    48          super(Constants.ADD);
    49      }
    50
    51      protected void encodeBody(IoSession session, AbstractMessage message,
    52              ByteBuffer out) {
    53          AddMessage m = (AddMessage) message;
    54          out.putInt(m.getValue());
    55      }
    56
    57      public Set<Class<?>> getMessageTypes() {
    58          return TYPES;
    59      }
    60
    61      public void dispose() throws Exception {
    62      }
    63  }