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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.codec.delimited;
21  
22  import org.apache.mina.codec.delimited.ints.VarInt;
23  import org.apache.mina.codec.delimited.serialization.ProtobufMessageEncoder;
24  
25  import com.google.protobuf.GeneratedMessage;
26  
27  /**
28   * Encode for protocol buffer messages.
29   * 
30   * @param INPUT base type for the encoded messages
31   * 
32   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
33   */
34  public class ProtobufEncoder<INPUT extends GeneratedMessage> extends SizePrefixedEncoder<INPUT> {
35  
36      public static <L extends GeneratedMessage> ProtobufEncoder<L> newInstance(Class<L> clazz) {
37          return new ProtobufEncoder<L>(clazz);
38      }
39  
40      public ProtobufEncoder(Class<INPUT> clazz) {
41          super(new VarInt().getEncoder(), ProtobufMessageEncoder.newInstance(clazz));
42      }
43  }