| /* |
| * 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.fluo.core.worker.finder.hash; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Comparator; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.Optional; |
| import java.util.stream.Stream; |
| |
| import org.apache.accumulo.core.data.Range; |
| import org.apache.fluo.api.data.Bytes; |
| import org.apache.fluo.core.util.ByteUtil; |
| import org.apache.fluo.core.util.Hex; |
| import org.apache.hadoop.io.Text; |
| |
| import static java.util.stream.Collectors.toList; |
| |
| public class TableRange implements Comparable<TableRange> { |
| private final Bytes prevEndRow; |
| private final Bytes endRow; |
| private final int hc; |
| |
| public TableRange(Bytes per, Bytes er) { |
| this.prevEndRow = per; |
| this.endRow = er; |
| this.hc = Objects.hash(this.prevEndRow, this.endRow); |
| } |
| |
| @Override |
| public int hashCode() { |
| return hc; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o instanceof TableRange) { |
| TableRange ot = (TableRange) o; |
| return Objects.equals(prevEndRow, ot.prevEndRow) && Objects.equals(endRow, ot.endRow); |
| } |
| |
| return false; |
| } |
| |
| public Bytes getPrevEndRow() { |
| return prevEndRow; |
| } |
| |
| public Bytes getEndRow() { |
| return endRow; |
| } |
| |
| public boolean contains(Bytes row) { |
| return (prevEndRow == null || row.compareTo(prevEndRow) > 0) |
| && (endRow == null || row.compareTo(endRow) <= 0); |
| } |
| |
| @Override |
| public String toString() { |
| String per = prevEndRow == null ? "-INF" : Hex.encNonAscii(prevEndRow); |
| String er = endRow == null ? "+INF" : Hex.encNonAscii(endRow); |
| |
| return "(" + per + " " + er + "]"; |
| } |
| |
| private static List<TableRange> fromStream(Stream<Bytes> stream) { |
| List<Bytes> sortedRows = stream.sorted().collect(toList()); |
| List<TableRange> tablets = new ArrayList<>(sortedRows.size() + 1); |
| for (int i = 0; i < sortedRows.size(); i++) { |
| tablets.add(new TableRange(i == 0 ? null : sortedRows.get(i - 1), sortedRows.get(i))); |
| } |
| |
| tablets.add(new TableRange( |
| sortedRows.size() == 0 ? null : sortedRows.get(sortedRows.size() - 1), null)); |
| return tablets; |
| |
| } |
| |
| public static List<TableRange> fromBytes(Collection<Bytes> rows) { |
| return fromStream(rows.stream()); |
| } |
| |
| public static List<TableRange> fromTexts(Collection<Text> rows) { |
| return fromStream(rows.stream().map(ByteUtil::toBytes)); |
| } |
| |
| public Range getRange() { |
| Text tper = Optional.ofNullable(prevEndRow).map(ByteUtil::toText).orElse(null); |
| Text ter = Optional.ofNullable(endRow).map(ByteUtil::toText).orElse(null); |
| return new Range(tper, false, ter, true); |
| } |
| |
| private static final Comparator<TableRange> TABLE_RANGE_COMPARATOR = |
| Comparator.comparing(TableRange::getEndRow, Comparator.nullsLast(Bytes::compareTo)); |
| |
| @Override |
| public int compareTo(TableRange other) { |
| return TABLE_RANGE_COMPARATOR.compare(this, other); |
| } |
| } |