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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  }