3 * Copyright (C) 2009-2017 SonarSource SA
4 * mailto:info AT sonarsource DOT com
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 3 of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 package org.sonar.server.qualityprofile.index;
22 import java.util.Collection;
23 import java.util.Iterator;
24 import java.util.List;
25 import org.sonar.db.DatabaseUtils;
26 import org.sonar.db.DbClient;
27 import org.sonar.db.DbSession;
29 import static java.util.Optional.ofNullable;
31 public class ActiveRuleIteratorForMultipleChunks implements ActiveRuleIterator {
33 private final DbClient dbClient;
34 private final DbSession dbSession;
35 private final Iterator<List<Integer>> iteratorOverChunks;
36 private ActiveRuleIteratorForSingleChunk currentChunk;
38 public ActiveRuleIteratorForMultipleChunks(DbClient dbClient, DbSession dbSession, Collection<Integer> activeRuleIds) {
39 this.dbClient = dbClient;
40 this.dbSession = dbSession;
41 this.iteratorOverChunks = DatabaseUtils.toUniqueAndSortedPartitions(activeRuleIds).iterator();
45 public boolean hasNext() {
46 if (currentChunk != null && currentChunk.hasNext()) {
49 return iteratorOverChunks.hasNext();
53 public ActiveRuleDoc next() {
54 if (currentChunk == null || !currentChunk.hasNext()) {
55 currentChunk = nextChunk();
57 return currentChunk.next();
60 private ActiveRuleIteratorForSingleChunk nextChunk() {
61 List<Integer> nextInput = iteratorOverChunks.next();
62 return new ActiveRuleIteratorForSingleChunk(dbClient, dbSession, nextInput);
67 ofNullable(currentChunk).ifPresent(ActiveRuleIterator::close);