Sh-Zh-7 commented on code in PR #14213: URL: https://github.com/apache/iotdb/pull/14213#discussion_r1915379311
########## iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/process/window/utils/ColumnList.java: ########## @@ -0,0 +1,141 @@ +/* + * 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.execution.operator.process.window.utils; + +import org.apache.tsfile.block.column.Column; +import org.apache.tsfile.block.column.ColumnEncoding; +import org.apache.tsfile.enums.TSDataType; +import org.apache.tsfile.utils.Binary; + +import java.util.ArrayList; +import java.util.List; + +public class ColumnList { + private final List<Column> columns; + private final List<Integer> positionCounts; + + public ColumnList(List<Column> columns) { + this.columns = columns; + + positionCounts = new ArrayList<>(); + for (Column column : columns) { + positionCounts.add(column.getPositionCount()); + } + } + + public TSDataType getDataType() { + return columns.get(0).getDataType(); + } + + public ColumnEncoding getEncoding() { + return columns.get(0).getEncoding(); + } + + public static class ColumnListIndex { + private final int columnIndex; + private final int offsetInColumn; + + ColumnListIndex(int columnIndex, int offsetInColumn) { + this.columnIndex = columnIndex; + this.offsetInColumn = offsetInColumn; + } + + public int getColumnIndex() { + return columnIndex; + } + + public int getOffsetInColumn() { + return offsetInColumn; + } + } + + public ColumnListIndex getColumnIndex(int rowIndex) { + int columnIndex = 0; + while (columnIndex < columns.size() && rowIndex >= positionCounts.get(columnIndex)) { + rowIndex -= positionCounts.get(columnIndex); + // Enter next Column + columnIndex++; + } + + if (columnIndex != columns.size()) { + return new ColumnListIndex(columnIndex, rowIndex); + } else { + // Unlikely + throw new IndexOutOfBoundsException("Index out of Partition's bounds!"); + } + } + + public boolean getBoolean(int position) { + ColumnListIndex columnListIndex = getColumnIndex(position); Review Comment: Maybe `getColumnListIndex` is more intuitive. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
