| /* |
| * 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.tsfile.read.query.timegenerator; |
| |
| import org.apache.iotdb.tsfile.file.metadata.ChunkMetadata; |
| import org.apache.iotdb.tsfile.read.controller.IChunkLoader; |
| import org.apache.iotdb.tsfile.read.controller.IMetadataQuerier; |
| import org.apache.iotdb.tsfile.read.expression.IExpression; |
| import org.apache.iotdb.tsfile.read.expression.impl.SingleSeriesExpression; |
| import org.apache.iotdb.tsfile.read.reader.IBatchReader; |
| import org.apache.iotdb.tsfile.read.reader.series.FileSeriesReader; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| public class TsFileTimeGenerator extends TimeGenerator { |
| |
| private IChunkLoader chunkLoader; |
| private IMetadataQuerier metadataQuerier; |
| |
| public TsFileTimeGenerator( |
| IExpression iexpression, IChunkLoader chunkLoader, IMetadataQuerier metadataQuerier) |
| throws IOException { |
| this.chunkLoader = chunkLoader; |
| this.metadataQuerier = metadataQuerier; |
| |
| super.constructNode(iexpression); |
| } |
| |
| @Override |
| protected IBatchReader generateNewBatchReader(SingleSeriesExpression expression) |
| throws IOException { |
| List<ChunkMetadata> chunkMetadataList = |
| metadataQuerier.getChunkMetaDataList(expression.getSeriesPath()); |
| return new FileSeriesReader(chunkLoader, chunkMetadataList, expression.getFilter()); |
| } |
| |
| @Override |
| protected boolean isAscending() { |
| return true; |
| } |
| } |