| /* |
| * 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.db.engine.querycontext.QueryDataSource; |
| import org.apache.iotdb.db.metadata.PartialPath; |
| 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 SeriesAggregateReader implements IAggregateReader { |
| |
| private final SeriesReader seriesReader; |
| |
| public SeriesAggregateReader( |
| PartialPath seriesPath, |
| Set<String> allSensors, |
| TSDataType dataType, |
| QueryContext context, |
| QueryDataSource dataSource, |
| Filter timeFilter, |
| Filter valueFilter, |
| TsFileFilter fileFilter, |
| boolean ascending) { |
| this.seriesReader = |
| SeriesReaderFactory.createSeriesReader( |
| seriesPath, |
| allSensors, |
| dataType, |
| context, |
| dataSource, |
| timeFilter, |
| valueFilter, |
| fileFilter, |
| ascending); |
| } |
| |
| @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 = currentFileStatistics(); |
| return !seriesReader.isFileOverlapped() |
| && containedByTimeFilter(fileStatistics) |
| && !seriesReader.currentFileModified(); |
| } |
| |
| @Override |
| public Statistics currentFileStatistics() { |
| return seriesReader.currentFileStatistics(); |
| } |
| |
| @Override |
| public void skipCurrentFile() { |
| seriesReader.skipCurrentFile(); |
| } |
| |
| @Override |
| public boolean hasNextChunk() throws IOException { |
| return seriesReader.hasNextChunk(); |
| } |
| |
| @Override |
| public boolean canUseCurrentChunkStatistics() throws IOException { |
| Statistics chunkStatistics = currentChunkStatistics(); |
| return !seriesReader.isChunkOverlapped() |
| && containedByTimeFilter(chunkStatistics) |
| && !seriesReader.currentChunkModified(); |
| } |
| |
| @Override |
| public Statistics currentChunkStatistics() { |
| return seriesReader.currentChunkStatistics(); |
| } |
| |
| @Override |
| public void skipCurrentChunk() { |
| seriesReader.skipCurrentChunk(); |
| } |
| |
| @Override |
| public boolean hasNextPage() throws IOException { |
| return seriesReader.hasNextPage(); |
| } |
| |
| @Override |
| public boolean canUseCurrentPageStatistics() throws IOException { |
| Statistics currentPageStatistics = currentPageStatistics(); |
| if (currentPageStatistics == null) { |
| return false; |
| } |
| return !seriesReader.isPageOverlapped() |
| && containedByTimeFilter(currentPageStatistics) |
| && !seriesReader.currentPageModified(); |
| } |
| |
| @Override |
| public Statistics currentPageStatistics() { |
| return seriesReader.currentPageStatistics(); |
| } |
| |
| @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()); |
| } |
| } |