2013-01-01 16:03:18 +01:00
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/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.buffer;
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/**
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* Default implementation of a {@link ByteBufHolder} that holds it's data in a {@link ByteBuf}.
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*
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*/
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public class DefaultByteBufHolder implements ByteBufHolder {
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2013-02-10 05:10:09 +01:00
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2013-01-01 16:03:18 +01:00
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private final ByteBuf data;
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2013-02-10 05:10:09 +01:00
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2013-01-01 16:03:18 +01:00
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public DefaultByteBufHolder(ByteBuf data) {
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if (data == null) {
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throw new NullPointerException("data");
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}
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if (data.unwrap() != null && !(data instanceof SwappedByteBuf)) {
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throw new IllegalArgumentException("Only not-derived ByteBuf instance are supported, you used: "
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+ data.getClass().getSimpleName());
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}
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this.data = data;
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}
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@Override
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public ByteBuf data() {
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2013-02-10 05:10:09 +01:00
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if (data.refCnt() <= 0) {
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2013-01-01 16:03:18 +01:00
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throw new IllegalBufferAccessException();
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}
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return data;
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}
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@Override
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2013-02-10 05:10:09 +01:00
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public ByteBufHolder copy() {
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return new DefaultByteBufHolder(data.copy());
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2013-01-01 16:03:18 +01:00
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}
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@Override
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2013-02-10 05:10:09 +01:00
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public int refCnt() {
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return data.refCnt();
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2013-01-01 16:03:18 +01:00
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}
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@Override
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2013-02-10 05:10:09 +01:00
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public void retain() {
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data.retain();
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}
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@Override
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public void retain(int increment) {
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data.retain(increment);
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}
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@Override
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public boolean release() {
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return data.release();
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}
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@Override
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public boolean release(int decrement) {
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return data.release(decrement);
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2013-01-01 16:03:18 +01:00
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}
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@Override
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public String toString() {
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2013-01-16 05:22:50 +01:00
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return getClass().getSimpleName() + '(' + data().toString() + ')';
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2013-01-01 16:03:18 +01:00
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}
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}
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