io.netty.handler.codec.marshalling.ContextBoundUnmarshallerProvider Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
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/*
* 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:
*
* https://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 io.netty.handler.codec.marshalling;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.util.Attribute;
import io.netty.util.AttributeKey;
import org.jboss.marshalling.MarshallerFactory;
import org.jboss.marshalling.MarshallingConfiguration;
import org.jboss.marshalling.Unmarshaller;
/**
* {@link UnmarshallerProvider} which store a reference to the {@link Unmarshaller} in the
* {@link ChannelHandlerContext} via the {@link ChannelHandlerContext#attr(AttributeKey)}
* method. So the same {@link Unmarshaller} will be used during the life-time of a {@link Channel}
* for the {@link ChannelHandler}'s {@link ChannelHandlerContext}.
*
*
*/
public class ContextBoundUnmarshallerProvider extends DefaultUnmarshallerProvider {
private static final AttributeKey UNMARSHALLER = AttributeKey.valueOf(
ContextBoundUnmarshallerProvider.class, "UNMARSHALLER");
public ContextBoundUnmarshallerProvider(MarshallerFactory factory, MarshallingConfiguration config) {
super(factory, config);
}
@Override
public Unmarshaller getUnmarshaller(ChannelHandlerContext ctx) throws Exception {
Attribute attr = ctx.channel().attr(UNMARSHALLER);
Unmarshaller unmarshaller = attr.get();
if (unmarshaller == null) {
unmarshaller = super.getUnmarshaller(ctx);
attr.set(unmarshaller);
}
return unmarshaller;
}
}