| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 org.apache.bookkeeper.mledger.impl; |
| |
| import org.apache.bookkeeper.mledger.Position; |
| import org.apache.bookkeeper.mledger.proto.MLDataFormats.NestedPositionInfo; |
| import org.apache.bookkeeper.mledger.proto.MLDataFormats.PositionInfo; |
| |
| public class PositionImpl implements Position, Comparable<PositionImpl> { |
| |
| protected long ledgerId; |
| protected long entryId; |
| protected long[] ackSet; |
| |
| public static final PositionImpl EARLIEST = new PositionImpl(-1, -1); |
| public static final PositionImpl LATEST = new PositionImpl(Long.MAX_VALUE, Long.MAX_VALUE); |
| |
| public PositionImpl(PositionInfo pi) { |
| this.ledgerId = pi.getLedgerId(); |
| this.entryId = pi.getEntryId(); |
| } |
| |
| public PositionImpl(NestedPositionInfo npi) { |
| this.ledgerId = npi.getLedgerId(); |
| this.entryId = npi.getEntryId(); |
| } |
| |
| public PositionImpl(long ledgerId, long entryId) { |
| this.ledgerId = ledgerId; |
| this.entryId = entryId; |
| } |
| |
| public PositionImpl(long ledgerId, long entryId, long[] ackSet) { |
| this.ledgerId = ledgerId; |
| this.entryId = entryId; |
| this.ackSet = ackSet; |
| } |
| |
| public PositionImpl(PositionImpl other) { |
| this.ledgerId = other.ledgerId; |
| this.entryId = other.entryId; |
| } |
| |
| public static PositionImpl get(long ledgerId, long entryId) { |
| return new PositionImpl(ledgerId, entryId); |
| } |
| |
| public static PositionImpl get(long ledgerId, long entryId, long[] ackSet) { |
| return new PositionImpl(ledgerId, entryId, ackSet); |
| } |
| |
| public static PositionImpl get(PositionImpl other) { |
| return new PositionImpl(other); |
| } |
| |
| public long[] getAckSet() { |
| return ackSet; |
| } |
| |
| public void setAckSet(long[] ackSet) { |
| this.ackSet = ackSet; |
| } |
| |
| public long getLedgerId() { |
| return ledgerId; |
| } |
| |
| public long getEntryId() { |
| return entryId; |
| } |
| |
| @Override |
| public PositionImpl getNext() { |
| if (entryId < 0) { |
| return PositionImpl.get(ledgerId, 0); |
| } else { |
| return PositionImpl.get(ledgerId, entryId + 1); |
| } |
| } |
| |
| /** |
| * Position after moving entryNum messages, |
| * if entryNum < 1, then return the current position. |
| * */ |
| public PositionImpl getPositionAfterEntries(int entryNum) { |
| if (entryNum < 1) { |
| return this; |
| } |
| if (entryId < 0) { |
| return PositionImpl.get(ledgerId, entryNum - 1); |
| } else { |
| return PositionImpl.get(ledgerId, entryId + entryNum); |
| } |
| } |
| |
| /** |
| * String representation of virtual cursor - LedgerId:EntryId. |
| */ |
| @Override |
| public String toString() { |
| return ledgerId + ":" + entryId; |
| } |
| |
| @Override |
| public int compareTo(PositionImpl that) { |
| if (this.ledgerId != that.ledgerId) { |
| return (this.ledgerId < that.ledgerId ? -1 : 1); |
| } |
| |
| if (this.entryId != that.entryId) { |
| return (this.entryId < that.entryId ? -1 : 1); |
| } |
| |
| return 0; |
| } |
| |
| public int compareTo(long ledgerId, long entryId) { |
| if (this.ledgerId != ledgerId) { |
| return (this.ledgerId < ledgerId ? -1 : 1); |
| } |
| |
| if (this.entryId != entryId) { |
| return (this.entryId < entryId ? -1 : 1); |
| } |
| |
| return 0; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = (int) (ledgerId ^ (ledgerId >>> 32)); |
| result = 31 * result + (int) (entryId ^ (entryId >>> 32)); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof PositionImpl) { |
| PositionImpl other = (PositionImpl) obj; |
| return ledgerId == other.ledgerId && entryId == other.entryId; |
| } |
| return false; |
| } |
| |
| public boolean hasAckSet() { |
| return ackSet != null; |
| } |
| |
| public PositionInfo getPositionInfo() { |
| return PositionInfo.newBuilder().setLedgerId(ledgerId).setEntryId(entryId).build(); |
| } |
| } |