| /* |
| * 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.IChunkMetadata; |
| import org.apache.iotdb.tsfile.read.common.TimeRange; |
| |
| import java.util.List; |
| |
| 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 (int metaIndex = 0; metaIndex < chunkMetaData.size(); metaIndex++) { |
| IChunkMetadata metaData = chunkMetaData.get(metaIndex); |
| 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 (range.overlaps(new TimeRange(metaData.getStartTime(), metaData.getEndTime()))) { |
| metaData.setModified(true); |
| } |
| return false; |
| } |
| } |
| } |
| return false; |
| }); |
| } |
| |
| private static void doModifyChunkMetaData(Modification modification, IChunkMetadata metaData) { |
| if (modification instanceof Deletion) { |
| Deletion deletion = (Deletion) modification; |
| metaData.insertIntoSortedDeletions(deletion.getStartTime(), deletion.getEndTime()); |
| } |
| } |
| |
| // 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); |
| } |
| } |