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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.serialization;
21  
22  import org.apache.mina.codec.IoBuffer;
23  import org.apache.mina.codec.delimited.IoBufferDecoder;
24  import org.apache.thrift.TBase;
25  import org.apache.thrift.TDeserializer;
26  import org.apache.thrift.TException;
27  import org.apache.thrift.protocol.TBinaryProtocol;
28  
29  /**
30   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
31   */
32  public class ThriftDynamicMessageDecoder extends
33  		IoBufferDecoder<ThriftDynamicMessageDecoder.ThriftSerializedMessage> {
34  	private final TDeserializer deserializer = new TDeserializer(
35  			new TBinaryProtocol.Factory());
36  
37  	@Override
38  	public ThriftSerializedMessage decode(IoBuffer buffer) {
39  		return new ThriftSerializedMessage(deserializer, buffer);
40  	}
41  
42  	public static final class ThriftSerializedMessage {
43  		private final IoBuffer buffer;
44  
45  		private final TDeserializer deserializer;
46  
47  		public ThriftSerializedMessage(TDeserializer deserializer,
48  				IoBuffer buffer) {
49  			this.buffer = buffer;
50  			this.deserializer = deserializer;
51  		}
52  
53  		public <L extends TBase<?, ?>> L get(Class<L> clazz)
54  				throws InstantiationException, IllegalAccessException,
55  				TException {
56  			L object = clazz.newInstance();
57  			byte array[] = new byte[buffer.remaining()];
58  			buffer.get(array);
59  			deserializer.deserialize(object, array);
60  			return object;
61  		}
62  	}
63  
64  	public static ThriftDynamicMessageDecoder newInstance() {
65  		return new ThriftDynamicMessageDecoder();
66  	}
67  }