| /* |
| * 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.queryengine.transformation.dag.adapter; |
| |
| import org.apache.iotdb.commons.udf.utils.UDFDataTypeTransformer; |
| import org.apache.iotdb.db.queryengine.transformation.datastructure.row.ElasticSerializableRowRecordList; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.udf.api.access.Row; |
| import org.apache.iotdb.udf.api.access.RowIterator; |
| import org.apache.iotdb.udf.api.access.RowWindow; |
| import org.apache.iotdb.udf.api.type.Type; |
| |
| import java.io.IOException; |
| |
| public class ElasticSerializableRowRecordListBackedMultiColumnWindow implements RowWindow { |
| |
| private final ElasticSerializableRowRecordList rowRecordList; |
| private final TSDataType[] dataTypes; |
| |
| private int beginIndex; |
| private int endIndex; |
| private int size; |
| |
| private long startTime; |
| private long endTime; |
| |
| private final ElasticSerializableRowRecordListBackedMultiColumnRow row; |
| private ElasticSerializableRowRecordListBackedMultiColumnWindowIterator rowIterator; |
| |
| public ElasticSerializableRowRecordListBackedMultiColumnWindow( |
| ElasticSerializableRowRecordList rowRecordList) { |
| this.rowRecordList = rowRecordList; |
| this.dataTypes = rowRecordList.getDataTypes(); |
| |
| beginIndex = 0; |
| endIndex = 0; |
| size = 0; |
| |
| row = new ElasticSerializableRowRecordListBackedMultiColumnRow(dataTypes); |
| } |
| |
| @Override |
| public int windowSize() { |
| return size; |
| } |
| |
| @Override |
| public Row getRow(int rowIndex) throws IOException { |
| if (this.size == 0) { |
| throw new IndexOutOfBoundsException("Size is 0"); |
| } |
| return row.setRowRecord(rowRecordList.getRowRecord(beginIndex + rowIndex)); |
| } |
| |
| @Override |
| public Type getDataType(int columnIndex) { |
| return UDFDataTypeTransformer.transformToUDFDataType(dataTypes[columnIndex]); |
| } |
| |
| @Override |
| public RowIterator getRowIterator() { |
| if (this.size == 0) { |
| return new EmptyRowIterator(); |
| } |
| if (rowIterator == null) { |
| rowIterator = |
| new ElasticSerializableRowRecordListBackedMultiColumnWindowIterator( |
| rowRecordList, beginIndex, endIndex); |
| } |
| |
| rowIterator.reset(); |
| return rowIterator; |
| } |
| |
| @Override |
| public long windowStartTime() { |
| return startTime; |
| } |
| |
| @Override |
| public long windowEndTime() { |
| return endTime; |
| } |
| |
| public void setEmptyWindow(long startTime, long endTime) { |
| this.startTime = startTime; |
| this.endTime = endTime; |
| this.size = 0; |
| } |
| |
| public void seek(int beginIndex, int endIndex, long startTime, long endTime) { |
| this.beginIndex = beginIndex; |
| this.endIndex = endIndex; |
| size = endIndex - beginIndex; |
| |
| this.startTime = startTime; |
| this.endTime = endTime; |
| |
| rowIterator = null; |
| } |
| } |