/*
* Copyright 2012 The Netty Project
*
* The Netty Project 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.
*/
package org.jboss.netty.handler.codec.marshalling;
import org.jboss.marshalling.Marshaller;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandler.Sharable;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.handler.codec.oneone.OneToOneEncoder;
/**
* {@link OneToOneEncoder} implementation which uses JBoss Marshalling to marshal
* an Object.
*
* See <a href="http://www.jboss.org/jbossmarshalling">JBoss Marshalling website</a>
* for more informations
*
* Use {@link MarshallingEncoder} if possible.
*
*/
@Sharable
public class CompatibleMarshallingEncoder extends OneToOneEncoder {
private final MarshallerProvider provider;
/**
* Create a new instance of the {@link CompatibleMarshallingEncoder}
*
* @param provider the {@link MarshallerProvider} to use to get the {@link Marshaller} for a {@link Channel}
*/
public CompatibleMarshallingEncoder(MarshallerProvider provider) {
this.provider = provider;
}
@Override
protected Object encode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
Marshaller marshaller = provider.getMarshaller(ctx);
ChannelBufferByteOutput output =
new ChannelBufferByteOutput(ctx.getChannel().getConfig().getBufferFactory(), 256);
marshaller.start(output);
marshaller.writeObject(msg);
marshaller.finish();
marshaller.close();
return output.getBuffer();
}
}