2 * Copyright 2015-present Open Networking Foundation
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package io.atomix.storage.buffer;
18 import io.atomix.utils.concurrent.ReferenceManager;
20 import java.nio.ByteOrder;
23 * Byte order swapped buffer.
25 * @author <a href="http://github.com/kuujo">Jordan Halterman</a>
27 public class SwappedBuffer extends AbstractBuffer {
28 private final Buffer root;
30 SwappedBuffer(Buffer root, Bytes bytes, ReferenceManager<Buffer> referenceManager) {
31 super(bytes, referenceManager);
35 public SwappedBuffer(Buffer buffer, int offset, int initialCapacity, int maxCapacity, ReferenceManager<Buffer> referenceManager) {
36 super(buffer.bytes().order(buffer.order() == ByteOrder.BIG_ENDIAN ? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN), offset, initialCapacity, maxCapacity, referenceManager);
37 this.root = buffer instanceof SwappedBuffer ? ((SwappedBuffer) buffer).root : buffer;
42 * Returns the root buffer.
44 * @return The root buffer.
46 public Buffer root() {
51 public boolean isDirect() {
52 return root.isDirect();
56 public boolean isFile() {
61 public boolean isReadOnly() {
62 return root.isReadOnly();
66 protected void compact(int from, int to, int length) {
67 if (root instanceof AbstractBuffer) {
68 ((AbstractBuffer) root).compact(from, to, length);
73 public Buffer duplicate() {
74 return new SwappedBuffer(root, offset(), capacity(), maxCapacity(), referenceManager);
78 public Buffer acquire() {
84 public boolean release() {
85 return root.release();