/*
* 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.buffer;
import io.netty.util.IllegalReferenceCountException;
import io.netty.util.internal.StringUtil;
/**
* Default implementation of a {@link ByteBufHolder} that holds it's data in a {@link ByteBuf}.
*
*/
public class DefaultByteBufHolder implements ByteBufHolder {
private final ByteBuf data;
public DefaultByteBufHolder(ByteBuf data) {
if (data == null) {
throw new NullPointerException("data");
}
this.data = data;
}
@Override
public ByteBuf content() {
if (data.refCnt() <= 0) {
throw new IllegalReferenceCountException(data.refCnt());
}
return data;
}
@Override
public ByteBufHolder copy() {
return new DefaultByteBufHolder(data.copy());
}
@Override
public ByteBufHolder duplicate() {
return new DefaultByteBufHolder(data.duplicate());
}
@Override
public int refCnt() {
return data.refCnt();
}
@Override
public ByteBufHolder retain() {
data.retain();
return this;
}
@Override
public ByteBufHolder retain(int increment) {
data.retain(increment);
return this;
}
@Override
public boolean release() {
return data.release();
}
@Override
public boolean release(int decrement) {
return data.release(decrement);
}
@Override
public String toString() {
return StringUtil.simpleClassName(this) + '(' + content().toString() + ')';
}
}