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Java example source code file (DefaultAddressedEnvelope.java)
This example Java source code file (DefaultAddressedEnvelope.java) is included in the alvinalexander.com
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The DefaultAddressedEnvelope.java Java example source code
/*
* Copyright 2013 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 io.netty.channel;
import io.netty.util.ReferenceCountUtil;
import io.netty.util.ReferenceCounted;
import io.netty.util.internal.StringUtil;
import java.net.SocketAddress;
/**
* The default {@link AddressedEnvelope} implementation.
*
* @param <M> the type of the wrapped message
* @param <A> the type of the recipient address
*/
public class DefaultAddressedEnvelope<M, A extends SocketAddress> implements AddressedEnvelope {
private final M message;
private final A sender;
private final A recipient;
/**
* Creates a new instance with the specified {@code message}, {@code recipient} address, and
* {@code sender} address.
*/
public DefaultAddressedEnvelope(M message, A recipient, A sender) {
if (message == null) {
throw new NullPointerException("message");
}
if (recipient == null && sender == null) {
throw new NullPointerException("recipient and sender");
}
this.message = message;
this.sender = sender;
this.recipient = recipient;
}
/**
* Creates a new instance with the specified {@code message} and {@code recipient} address.
* The sender address becomes {@code null}.
*/
public DefaultAddressedEnvelope(M message, A recipient) {
this(message, recipient, null);
}
@Override
public M content() {
return message;
}
@Override
public A sender() {
return sender;
}
@Override
public A recipient() {
return recipient;
}
@Override
public int refCnt() {
if (message instanceof ReferenceCounted) {
return ((ReferenceCounted) message).refCnt();
} else {
return 1;
}
}
@Override
public AddressedEnvelope<M, A> retain() {
ReferenceCountUtil.retain(message);
return this;
}
@Override
public AddressedEnvelope<M, A> retain(int increment) {
ReferenceCountUtil.retain(message, increment);
return this;
}
@Override
public boolean release() {
return ReferenceCountUtil.release(message);
}
@Override
public boolean release(int decrement) {
return ReferenceCountUtil.release(message, decrement);
}
@Override
public AddressedEnvelope<M, A> touch() {
ReferenceCountUtil.touch(message);
return this;
}
@Override
public AddressedEnvelope<M, A> touch(Object hint) {
ReferenceCountUtil.touch(message, hint);
return this;
}
@Override
public String toString() {
if (sender != null) {
return StringUtil.simpleClassName(this) +
'(' + sender + " => " + recipient + ", " + message + ')';
} else {
return StringUtil.simpleClassName(this) +
"(=> " + recipient + ", " + message + ')';
}
}
}
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