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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.ProtobufMessageDecoder;
24  
25  import com.google.protobuf.ExtensionRegistryLite;
26  import com.google.protobuf.GeneratedMessage;
27  
28  /**
29   * Decode Protocol Buffer messages of type OUTPUT
30   * 
31   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
32   */
33  public class ProtobufDecoder<OUTPUT extends GeneratedMessage> extends
34  		SizePrefixedDecoder<OUTPUT> {
35  	public static <L extends GeneratedMessage> ProtobufDecoder<L> newInstance(
36  			Class<L> clazz, ExtensionRegistryLite registry)
37  			throws NoSuchMethodException {
38  		return new ProtobufDecoder<L>(clazz, registry);
39  	}
40  
41  	public static <L extends GeneratedMessage> ProtobufDecoder<L> newInstance(
42  			Class<L> clazz) throws NoSuchMethodException {
43  		return newInstance(clazz, ExtensionRegistryLite.getEmptyRegistry());
44  	}
45  
46  	public ProtobufDecoder(Class<OUTPUT> clazz, ExtensionRegistryLite registry)
47  			throws NoSuchMethodException {
48  		super(new VarInt().getDecoder(), ProtobufMessageDecoder.newInstance(
49  				clazz, registry));
50  	}
51  }