| /* |
| * 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.storageengine.dataregion.compaction.execute.utils.executor.readchunk.loader; |
| |
| import org.apache.iotdb.db.storageengine.dataregion.compaction.execute.utils.executor.ModifiedStatus; |
| import org.apache.iotdb.tsfile.file.header.ChunkHeader; |
| import org.apache.iotdb.tsfile.file.header.PageHeader; |
| import org.apache.iotdb.tsfile.file.metadata.ChunkMetadata; |
| import org.apache.iotdb.tsfile.read.common.Chunk; |
| import org.apache.iotdb.tsfile.read.common.TimeRange; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| public abstract class ChunkLoader { |
| |
| protected ChunkMetadata chunkMetadata; |
| protected ModifiedStatus modifiedStatus; |
| |
| protected ChunkLoader(ChunkMetadata chunkMetadata) { |
| this.chunkMetadata = chunkMetadata; |
| calculateModifiedStatus(); |
| } |
| |
| protected ChunkLoader() {} |
| |
| private void calculateModifiedStatus() { |
| this.modifiedStatus = ModifiedStatus.NONE_DELETED; |
| if (chunkMetadata == null || chunkMetadata.getStatistics().getCount() == 0) { |
| return; |
| } |
| ChunkMetadata chunkMetadata = getChunkMetadata(); |
| List<TimeRange> deleteIntervalList = chunkMetadata.getDeleteIntervalList(); |
| if (deleteIntervalList == null || deleteIntervalList.isEmpty()) { |
| return; |
| } |
| long startTime = chunkMetadata.getStartTime(); |
| long endTime = chunkMetadata.getEndTime(); |
| TimeRange chunkTimeRange = new TimeRange(startTime, endTime); |
| for (TimeRange timeRange : deleteIntervalList) { |
| if (timeRange.contains(chunkTimeRange)) { |
| this.modifiedStatus = ModifiedStatus.ALL_DELETED; |
| break; |
| } else if (timeRange.overlaps(chunkTimeRange)) { |
| this.modifiedStatus = ModifiedStatus.PARTIAL_DELETED; |
| } |
| } |
| } |
| |
| protected ModifiedStatus calculatePageModifiedStatus(PageHeader pageHeader) { |
| if (this.modifiedStatus != ModifiedStatus.PARTIAL_DELETED) { |
| return this.modifiedStatus; |
| } |
| ModifiedStatus pageModifiedStatus = ModifiedStatus.NONE_DELETED; |
| List<TimeRange> deleteIntervalList = chunkMetadata.getDeleteIntervalList(); |
| long startTime = pageHeader.getStartTime(); |
| long endTime = pageHeader.getEndTime(); |
| TimeRange pageTimeRange = new TimeRange(startTime, endTime); |
| for (TimeRange timeRange : deleteIntervalList) { |
| if (timeRange.contains(pageTimeRange)) { |
| pageModifiedStatus = ModifiedStatus.ALL_DELETED; |
| break; |
| } else if (timeRange.overlaps(pageTimeRange)) { |
| pageModifiedStatus = ModifiedStatus.PARTIAL_DELETED; |
| } |
| } |
| return pageModifiedStatus; |
| } |
| |
| public ChunkMetadata getChunkMetadata() { |
| return chunkMetadata; |
| } |
| |
| public ModifiedStatus getModifiedStatus() { |
| return modifiedStatus; |
| } |
| |
| public abstract Chunk getChunk() throws IOException; |
| |
| public abstract boolean isEmpty(); |
| |
| public abstract ChunkHeader getHeader() throws IOException; |
| |
| public abstract List<PageLoader> getPages() throws IOException; |
| |
| public abstract void clear(); |
| } |