package org.apache.directmemory.serialization.protostuff;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import static com.dyuproject.protostuff.LinkedBuffer.allocate;
import static com.dyuproject.protostuff.ProtostuffIOUtil.mergeFrom;
import static com.dyuproject.protostuff.ProtostuffIOUtil.toByteArray;
import static com.dyuproject.protostuff.runtime.RuntimeSchema.getSchema;
import java.io.IOException;
import org.apache.directmemory.measures.Ram;
import org.apache.directmemory.serialization.Serializer;
import com.dyuproject.protostuff.LinkedBuffer;
import com.dyuproject.protostuff.Schema;
public final class ProtoStuffWithLinkedBufferSerializer
implements Serializer
{
static int bufferSize = Ram.Kb( 3 );
/*
*
*
*
LinkedBuffer buffer8k = ...;
try
{
ProtostuffIOUtil.writeTo(new ByteBufferOutputStream() { // paging logic }, message, schema, buffer8k)
}
finally
{
buffer8k.clear();
}
ProtostuffIOUtil.mergeFrom(new ByteArrayInputStream() { // paging logic}, message, schema, buffer8k);
*/
private static final ThreadLocal<LinkedBuffer> localBuffer = new ThreadLocal<LinkedBuffer>()
{
protected LinkedBuffer initialValue()
{
return allocate( bufferSize );
}
};
public ProtoStuffWithLinkedBufferSerializer()
{
}
public ProtoStuffWithLinkedBufferSerializer( int bufferSize )
{
ProtoStuffWithLinkedBufferSerializer.bufferSize = bufferSize;
}
/**
* {@inheritDoc}
*/
@Override
public <T> byte[] serialize( T obj )
throws IOException
{
@SuppressWarnings( "unchecked" ) // type should be safe since got directly from the obj
final Class<T> clazz = (Class<T>) obj.getClass();
final Schema<T> schema = getSchema( clazz );
final LinkedBuffer buffer = localBuffer.get();
byte[] protostuff = null;
try
{
protostuff = toByteArray( obj, schema, buffer );
}
finally
{
buffer.clear();
}
return protostuff;
}
/**
* {@inheritDoc}
*/
@Override
public <T> T deserialize( byte[] source, Class<T> clazz )
throws IOException, ClassNotFoundException, InstantiationException, IllegalAccessException
{
T object = clazz.newInstance();
Schema<T> schema = getSchema( clazz );
mergeFrom( source, object, schema );
return object;
}
}