| /* |
| * 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.iotdb.db.utils; |
| |
| import org.apache.iotdb.db.engine.modification.Deletion; |
| import org.apache.iotdb.db.engine.modification.Modification; |
| import org.apache.iotdb.db.engine.querycontext.QueryDataSource; |
| import org.apache.iotdb.db.engine.storagegroup.TsFileResource; |
| import org.apache.iotdb.db.query.filter.TsFileFilter; |
| import org.apache.iotdb.tsfile.file.metadata.AlignedChunkMetadata; |
| import org.apache.iotdb.tsfile.file.metadata.IChunkMetadata; |
| import org.apache.iotdb.tsfile.read.common.TimeRange; |
| import org.apache.iotdb.tsfile.utils.TsPrimitiveType; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.stream.Collectors; |
| |
| public class QueryUtils { |
| |
| private QueryUtils() { |
| // util class |
| } |
| |
| /** |
| * modifyChunkMetaData iterates the chunkMetaData and applies all available modifications on it to |
| * generate a ModifiedChunkMetadata. <br> |
| * the caller should guarantee that chunkMetaData and modifications refer to the same time series |
| * paths. |
| * |
| * @param chunkMetaData the original chunkMetaData. |
| * @param modifications all possible modifications. |
| */ |
| @SuppressWarnings("squid:S3776") // Suppress high Cognitive Complexity warning |
| public static void modifyChunkMetaData( |
| List<? extends IChunkMetadata> chunkMetaData, List<Modification> modifications) { |
| for (IChunkMetadata metaData : chunkMetaData) { |
| for (Modification modification : modifications) { |
| // When the chunkMetadata come from an old TsFile, the method modification.getFileOffset() |
| // is gerVersionNum actually. In this case, we compare the versions of modification and |
| // mataData to determine whether need to do modify. |
| if (metaData.isFromOldTsFile()) { |
| if (modification.getFileOffset() > metaData.getVersion()) { |
| doModifyChunkMetaData(modification, metaData); |
| } |
| continue; |
| } |
| // The case modification.getFileOffset() == metaData.getOffsetOfChunkHeader() |
| // is not supposed to exist as getFileOffset() is offset containing full chunk, |
| // while getOffsetOfChunkHeader() returns the chunk header offset |
| if (modification.getFileOffset() > metaData.getOffsetOfChunkHeader()) { |
| doModifyChunkMetaData(modification, metaData); |
| } |
| } |
| } |
| // remove chunks that are completely deleted |
| chunkMetaData.removeIf( |
| metaData -> { |
| if (metaData.getDeleteIntervalList() != null) { |
| for (TimeRange range : metaData.getDeleteIntervalList()) { |
| if (range.contains(metaData.getStartTime(), metaData.getEndTime())) { |
| return true; |
| } else { |
| if (!metaData.isModified() |
| && range.overlaps( |
| new TimeRange(metaData.getStartTime(), metaData.getEndTime()))) { |
| metaData.setModified(true); |
| } |
| } |
| } |
| } |
| return false; |
| }); |
| } |
| |
| public static void modifyAlignedChunkMetaData( |
| List<AlignedChunkMetadata> chunkMetaData, List<List<Modification>> modifications) { |
| for (AlignedChunkMetadata metaData : chunkMetaData) { |
| List<IChunkMetadata> valueChunkMetadataList = metaData.getValueChunkMetadataList(); |
| // deal with each sub sensor |
| for (int i = 0; i < valueChunkMetadataList.size(); i++) { |
| IChunkMetadata v = valueChunkMetadataList.get(i); |
| if (v != null) { |
| List<Modification> modificationList = modifications.get(i); |
| for (Modification modification : modificationList) { |
| // The case modification.getFileOffset() == metaData.getOffsetOfChunkHeader() |
| // is not supposed to exist as getFileOffset() is offset containing full chunk, |
| // while getOffsetOfChunkHeader() returns the chunk header offset |
| if (modification.getFileOffset() > v.getOffsetOfChunkHeader()) { |
| doModifyChunkMetaData(modification, v); |
| } |
| } |
| } |
| } |
| } |
| // if all sub sensors' chunk metadata are deleted, then remove the aligned chunk metadata |
| // otherwise, set the deleted chunk metadata of some sensors to null |
| chunkMetaData.removeIf( |
| alignedChunkMetadata -> { |
| // the whole aligned path need to be removed, only set to be true if all the sub sensors |
| // are deleted |
| boolean removed = true; |
| // the whole aligned path is modified, set to be true if any sub sensor is modified |
| boolean modified = false; |
| List<IChunkMetadata> valueChunkMetadataList = |
| alignedChunkMetadata.getValueChunkMetadataList(); |
| for (int i = 0; i < valueChunkMetadataList.size(); i++) { |
| IChunkMetadata valueChunkMetadata = valueChunkMetadataList.get(i); |
| if (valueChunkMetadata == null) { |
| continue; |
| } |
| // current sub sensor's chunk metadata is completely removed |
| boolean currentRemoved = false; |
| if (valueChunkMetadata.getDeleteIntervalList() != null) { |
| for (TimeRange range : valueChunkMetadata.getDeleteIntervalList()) { |
| if (range.contains( |
| valueChunkMetadata.getStartTime(), valueChunkMetadata.getEndTime())) { |
| valueChunkMetadataList.set(i, null); |
| currentRemoved = true; |
| break; |
| } else { |
| if (!valueChunkMetadata.isModified() |
| && range.overlaps( |
| new TimeRange( |
| valueChunkMetadata.getStartTime(), |
| valueChunkMetadata.getEndTime()))) { |
| valueChunkMetadata.setModified(true); |
| modified = true; |
| } |
| } |
| } |
| } |
| // current sub sensor's chunk metadata is not completely removed, |
| // so the whole aligned path don't need to be removed from list |
| if (!currentRemoved) { |
| removed = false; |
| } |
| } |
| alignedChunkMetadata.setModified(modified); |
| return removed; |
| }); |
| } |
| |
| private static void doModifyChunkMetaData(Modification modification, IChunkMetadata metaData) { |
| if (modification instanceof Deletion) { |
| Deletion deletion = (Deletion) modification; |
| metaData.insertIntoSortedDeletions(deletion.getTimeRange()); |
| } |
| } |
| |
| // remove files that do not satisfy the filter |
| public static void filterQueryDataSource( |
| QueryDataSource queryDataSource, TsFileFilter fileFilter) { |
| if (fileFilter == null) { |
| return; |
| } |
| List<TsFileResource> seqResources = queryDataSource.getSeqResources(); |
| List<TsFileResource> unseqResources = queryDataSource.getUnseqResources(); |
| seqResources.removeIf(fileFilter::fileNotSatisfy); |
| unseqResources.removeIf(fileFilter::fileNotSatisfy); |
| } |
| |
| public static ValueIterator generateValueIterator(Object[] values) { |
| if (values == null) { |
| return null; |
| } |
| // find the first element that is not NULL |
| int index = 0; |
| while (index < values.length && values[index] == null) { |
| index++; |
| } |
| if (index == values.length) { |
| // all elements are NULL |
| return null; |
| } |
| if (values[index] instanceof TsPrimitiveType[]) { |
| return new AlignedValueIterator(values); |
| } else { |
| return new ValueIterator(values); |
| } |
| } |
| |
| public static void fillOrderIndexes( |
| QueryDataSource dataSource, String deviceId, boolean ascending) { |
| List<TsFileResource> unseqResources = dataSource.getUnseqResources(); |
| int[] orderIndex = new int[unseqResources.size()]; |
| AtomicInteger index = new AtomicInteger(); |
| Map<Integer, Long> intToOrderTimeMap = |
| unseqResources.stream() |
| .collect( |
| Collectors.toMap( |
| key -> index.getAndIncrement(), |
| resource -> resource.getOrderTime(deviceId, ascending))); |
| index.set(0); |
| intToOrderTimeMap.entrySet().stream() |
| .sorted( |
| (t1, t2) -> |
| ascending |
| ? Long.compare(t1.getValue(), t2.getValue()) |
| : Long.compare(t2.getValue(), t1.getValue())) |
| .collect(Collectors.toList()) |
| .forEach(item -> orderIndex[index.getAndIncrement()] = item.getKey()); |
| dataSource.setUnSeqFileOrderIndex(orderIndex); |
| } |
| } |