| /* |
| * 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.qp.physical.crud; |
| |
| import org.apache.iotdb.commons.exception.MetadataException; |
| import org.apache.iotdb.commons.path.MeasurementPath; |
| import org.apache.iotdb.commons.path.PartialPath; |
| import org.apache.iotdb.db.mpp.plan.expression.ResultColumn; |
| import org.apache.iotdb.db.mpp.plan.expression.leaf.TimestampOperand; |
| import org.apache.iotdb.db.mpp.transformation.dag.udf.UDTFContext; |
| import org.apache.iotdb.db.qp.logical.Operator; |
| import org.apache.iotdb.db.qp.strategy.PhysicalGenerator; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.utils.Pair; |
| |
| import java.time.ZoneId; |
| import java.util.ArrayList; |
| import java.util.BitSet; |
| import java.util.Comparator; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class UDTFPlan extends RawDataQueryPlan implements UDFPlan { |
| |
| protected final UDTFContext udtfContext; |
| |
| protected final Map<Integer, Integer> datasetOutputIndexToResultColumnIndex = new HashMap<>(); |
| protected final Map<String, Integer> pathNameToReaderIndex = new HashMap<>(); |
| |
| public UDTFPlan(ZoneId zoneId) { |
| super(); |
| udtfContext = new UDTFContext(zoneId); |
| setOperatorType(Operator.OperatorType.UDTF); |
| } |
| |
| @Override |
| public void deduplicate(PhysicalGenerator physicalGenerator) throws MetadataException { |
| // sort paths by device, to accelerate the metadata read process |
| List<Pair<PartialPath, Integer>> indexedPaths = new ArrayList<>(); |
| for (int i = 0; i < resultColumns.size(); i++) { |
| for (PartialPath path : resultColumns.get(i).collectPaths()) { |
| indexedPaths.add(new Pair<>(path, i)); |
| } |
| } |
| indexedPaths.sort(Comparator.comparing(pair -> pair.left)); |
| |
| Set<String> columnForReaderSet = new HashSet<>(); |
| Set<String> columnForDisplaySet = new HashSet<>(); |
| |
| for (Pair<PartialPath, Integer> indexedPath : indexedPaths) { |
| PartialPath originalPath = indexedPath.left; |
| Integer originalIndex = indexedPath.right; |
| |
| String columnForReader = originalPath.getFullPath(); |
| if (!columnForReaderSet.contains(columnForReader) |
| && !TimestampOperand.TIMESTAMP_PARTIAL_PATH.getFullPath().equals(columnForReader)) { |
| addDeduplicatedPaths(originalPath); |
| pathNameToReaderIndex.put(columnForReader, pathNameToReaderIndex.size()); |
| columnForReaderSet.add(columnForReader); |
| } |
| |
| String columnForDisplay = getColumnForDisplay(columnForReader, originalIndex); |
| if (!columnForDisplaySet.contains(columnForDisplay)) { |
| int datasetOutputIndex = getPathToIndex().size(); |
| setColumnNameToDatasetOutputIndex(columnForDisplay, datasetOutputIndex); |
| setDatasetOutputIndexToResultColumnIndex(datasetOutputIndex, originalIndex); |
| columnForDisplaySet.add(columnForDisplay); |
| } |
| } |
| |
| // Aligned timeseries is not supported in current query for now. |
| // To judge whether an aligned timeseries is used, we need to traversal all the paths in |
| // deduplicatedPaths. |
| for (PartialPath path : getDeduplicatedPaths()) { |
| MeasurementPath measurementPath = (MeasurementPath) path; |
| if (measurementPath.isUnderAlignedEntity()) { |
| throw new MetadataException( |
| "Aligned timeseries is not supported in current query for now."); |
| } |
| } |
| } |
| |
| @Override |
| public List<TSDataType> getWideQueryHeaders( |
| List<String> respColumns, List<String> respSgColumns, boolean isJdbcQuery, BitSet aliasList) { |
| List<TSDataType> seriesTypes = new ArrayList<>(); |
| for (int i = 0; i < paths.size(); i++) { |
| respColumns.add(resultColumns.get(i).getResultColumnName()); |
| seriesTypes.add(resultColumns.get(i).getDataType()); |
| } |
| return seriesTypes; |
| } |
| |
| protected void setDatasetOutputIndexToResultColumnIndex( |
| int datasetOutputIndex, Integer originalIndex) { |
| datasetOutputIndexToResultColumnIndex.put(datasetOutputIndex, originalIndex); |
| } |
| |
| @Override |
| public List<PartialPath> getAuthPaths() { |
| Set<PartialPath> authPaths = new HashSet<>(); |
| for (ResultColumn resultColumn : resultColumns) { |
| authPaths.addAll(resultColumn.collectPaths()); |
| } |
| return new ArrayList<>(authPaths); |
| } |
| |
| @Override |
| public void constructUdfExecutors(List<ResultColumn> resultColumns) { |
| udtfContext.constructUdfExecutors(resultColumns); |
| } |
| |
| @Override |
| public void finalizeUDFExecutors(long queryId) { |
| udtfContext.finalizeUDFExecutors(queryId); |
| } |
| |
| public ResultColumn getResultColumnByDatasetOutputIndex(int datasetOutputIndex) { |
| return resultColumns.get(datasetOutputIndexToResultColumnIndex.get(datasetOutputIndex)); |
| } |
| |
| public Integer getReaderIndexByExpressionName(String expressionName) { |
| return pathNameToReaderIndex.get(expressionName); |
| } |
| |
| public UDTFContext getUdtfContext() { |
| return udtfContext; |
| } |
| } |