| /* |
| * 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.chunk; |
| |
| import org.apache.iotdb.tsfile.file.metadata.ChunkMetadata; |
| import org.apache.iotdb.tsfile.file.metadata.statistics.Statistics; |
| import org.apache.iotdb.tsfile.read.TimeValuePair; |
| import org.apache.iotdb.tsfile.read.common.BatchData; |
| import org.apache.iotdb.tsfile.read.common.BatchDataFactory; |
| import org.apache.iotdb.tsfile.read.filter.basic.Filter; |
| import org.apache.iotdb.tsfile.read.filter.operator.AndFilter; |
| import org.apache.iotdb.tsfile.read.reader.IPageReader; |
| import org.apache.iotdb.tsfile.read.reader.IPointReader; |
| |
| import java.io.IOException; |
| |
| public class MemPageReader implements IPageReader { |
| |
| private final IPointReader timeValuePairIterator; |
| private final ChunkMetadata chunkMetadata; |
| private Filter valueFilter; |
| |
| public MemPageReader( |
| IPointReader timeValuePairIterator, ChunkMetadata chunkMetadata, Filter filter) { |
| this.timeValuePairIterator = timeValuePairIterator; |
| this.chunkMetadata = chunkMetadata; |
| this.valueFilter = filter; |
| } |
| |
| @Override |
| public BatchData getAllSatisfiedPageData(boolean ascending) throws IOException { |
| BatchData batchData = |
| BatchDataFactory.createBatchData(chunkMetadata.getDataType(), ascending, false); |
| while (timeValuePairIterator.hasNextTimeValuePair()) { |
| TimeValuePair timeValuePair = timeValuePairIterator.nextTimeValuePair(); |
| if (valueFilter == null |
| || valueFilter.satisfy( |
| timeValuePair.getTimestamp(), timeValuePair.getValue().getValue())) { |
| batchData.putAnObject(timeValuePair.getTimestamp(), timeValuePair.getValue().getValue()); |
| } |
| } |
| return batchData.flip(); |
| } |
| |
| @Override |
| public Statistics getStatistics() { |
| return chunkMetadata.getStatistics(); |
| } |
| |
| @Override |
| public void setFilter(Filter filter) { |
| if (valueFilter == null) { |
| this.valueFilter = filter; |
| } else { |
| valueFilter = new AndFilter(this.valueFilter, filter); |
| } |
| } |
| |
| @Override |
| public boolean isModified() { |
| return false; |
| } |
| } |