| /* |
| * 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.query.reader.series; |
| |
| import org.apache.iotdb.commons.path.AlignedPath; |
| import org.apache.iotdb.db.engine.querycontext.QueryDataSource; |
| import org.apache.iotdb.db.query.context.QueryContext; |
| import org.apache.iotdb.db.query.filter.TsFileFilter; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.file.metadata.statistics.Statistics; |
| import org.apache.iotdb.tsfile.read.common.BatchData; |
| import org.apache.iotdb.tsfile.read.filter.basic.Filter; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| |
| public class AlignedSeriesAggregateReader implements IAggregateReader { |
| |
| private final AlignedSeriesReader seriesReader; |
| /** |
| * Used to locate the subSensor that we are traversing now. Use hasNextSubSeries() method to check |
| * if we have more sub series in one loop. And use nextSeries() method to move to next sub series. |
| */ |
| private int curIndex = 0; |
| |
| private final int subSensorSize; |
| |
| public AlignedSeriesAggregateReader( |
| AlignedPath seriesPath, |
| Set<String> allSensors, |
| TSDataType dataType, |
| QueryContext context, |
| QueryDataSource dataSource, |
| Filter timeFilter, |
| Filter valueFilter, |
| TsFileFilter fileFilter, |
| boolean ascending) { |
| this.seriesReader = |
| new AlignedSeriesReader( |
| seriesPath, |
| allSensors, |
| dataType, |
| context, |
| dataSource, |
| timeFilter, |
| valueFilter, |
| fileFilter, |
| ascending); |
| this.subSensorSize = seriesPath.getMeasurementList().size(); |
| } |
| |
| @Override |
| public boolean isAscending() { |
| return seriesReader.getOrderUtils().getAscending(); |
| } |
| |
| @Override |
| public boolean hasNextFile() throws IOException { |
| return seriesReader.hasNextFile(); |
| } |
| |
| @Override |
| public boolean canUseCurrentFileStatistics() throws IOException { |
| Statistics fileStatistics = seriesReader.currentFileTimeStatistics(); |
| return !seriesReader.isFileOverlapped() |
| && containedByTimeFilter(fileStatistics) |
| && !seriesReader.currentFileModified(); |
| } |
| |
| @Override |
| public Statistics currentFileStatistics() throws IOException { |
| return seriesReader.currentFileStatistics(curIndex); |
| } |
| |
| public Statistics currentFileTimeStatistics() throws IOException { |
| return seriesReader.currentFileTimeStatistics(); |
| } |
| |
| @Override |
| public void skipCurrentFile() { |
| seriesReader.skipCurrentFile(); |
| } |
| |
| @Override |
| public boolean hasNextChunk() throws IOException { |
| return seriesReader.hasNextChunk(); |
| } |
| |
| @Override |
| public boolean canUseCurrentChunkStatistics() throws IOException { |
| Statistics chunkStatistics = seriesReader.currentChunkTimeStatistics(); |
| return !seriesReader.isChunkOverlapped() |
| && containedByTimeFilter(chunkStatistics) |
| && !seriesReader.currentChunkModified(); |
| } |
| |
| @Override |
| public Statistics currentChunkStatistics() throws IOException { |
| return seriesReader.currentChunkStatistics(curIndex); |
| } |
| |
| public Statistics currentChunkTimeStatistics() throws IOException { |
| return seriesReader.currentChunkTimeStatistics(); |
| } |
| |
| @Override |
| public void skipCurrentChunk() { |
| seriesReader.skipCurrentChunk(); |
| } |
| |
| @Override |
| public boolean hasNextPage() throws IOException { |
| return seriesReader.hasNextPage(); |
| } |
| |
| @Override |
| public boolean canUseCurrentPageStatistics() throws IOException { |
| Statistics currentPageStatistics = seriesReader.currentPageTimeStatistics(); |
| if (currentPageStatistics == null) { |
| return false; |
| } |
| return !seriesReader.isPageOverlapped() |
| && containedByTimeFilter(currentPageStatistics) |
| && !seriesReader.currentPageModified(); |
| } |
| |
| @Override |
| public Statistics currentPageStatistics() throws IOException { |
| return seriesReader.currentPageStatistics(curIndex); |
| } |
| |
| public Statistics currentPageTimeStatistics() throws IOException { |
| return seriesReader.currentPageTimeStatistics(); |
| } |
| |
| @Override |
| public void skipCurrentPage() { |
| seriesReader.skipCurrentPage(); |
| } |
| |
| @Override |
| public BatchData nextPage() throws IOException { |
| return seriesReader.nextPage().flip(); |
| } |
| |
| private boolean containedByTimeFilter(Statistics statistics) { |
| Filter timeFilter = seriesReader.getTimeFilter(); |
| return timeFilter == null |
| || timeFilter.containStartEndTime(statistics.getStartTime(), statistics.getEndTime()); |
| } |
| |
| public boolean hasNextSubSeries() { |
| if (getCurIndex() < subSensorSize) { |
| return true; |
| } else { |
| resetIndex(); |
| return false; |
| } |
| } |
| |
| public void nextSeries() { |
| curIndex++; |
| } |
| |
| public int getCurIndex() { |
| return curIndex; |
| } |
| |
| public void resetIndex() { |
| curIndex = 0; |
| } |
| } |