| /* |
| * 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.plan.planner; |
| |
| import org.apache.iotdb.commons.path.AlignedPath; |
| import org.apache.iotdb.commons.path.MeasurementPath; |
| import org.apache.iotdb.commons.path.PartialPath; |
| import org.apache.iotdb.db.queryengine.common.MPPQueryContext; |
| import org.apache.iotdb.db.queryengine.plan.analyze.Analysis; |
| import org.apache.iotdb.db.queryengine.plan.expression.Expression; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNode; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.process.FilterNode; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.source.AlignedSeriesScanNode; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.source.SeriesScanNode; |
| import org.apache.iotdb.db.queryengine.plan.statement.component.Ordering; |
| import org.apache.iotdb.tsfile.write.schema.IMeasurementSchema; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * This class provides accelerated implementation for multiple devices align by device query. This |
| * optimization is only used for devices set in only one template, using template can avoid many |
| * unnecessary judgements. |
| */ |
| public class TemplatedLogicalPlanBuilder extends LogicalPlanBuilder { |
| private final MPPQueryContext context; |
| |
| private final Analysis analysis; |
| |
| private final List<String> measurementList; |
| private final List<IMeasurementSchema> schemaList; |
| |
| public TemplatedLogicalPlanBuilder( |
| Analysis analysis, |
| MPPQueryContext context, |
| List<String> measurementList, |
| List<IMeasurementSchema> schemaList) { |
| super(analysis, context); |
| this.analysis = analysis; |
| this.context = context; |
| this.measurementList = measurementList; |
| this.schemaList = schemaList; |
| } |
| |
| public TemplatedLogicalPlanBuilder planRawDataSource( |
| PartialPath devicePath, |
| Ordering scanOrder, |
| long offset, |
| long limit, |
| boolean lastLevelUseWildcard) { |
| List<PlanNode> sourceNodeList = new ArrayList<>(); |
| |
| if (analysis.getDeviceTemplate().isDirectAligned()) { |
| AlignedPath path = new AlignedPath(devicePath); |
| path.setMeasurementList(measurementList); |
| path.addSchemas(schemaList); |
| |
| // if value filter push down is implemented, |
| // the serializeUseTemplate and deserializeUseTemplate method of AlignedSeriesScanNode also |
| // need adapt |
| AlignedSeriesScanNode alignedSeriesScanNode = |
| new AlignedSeriesScanNode( |
| context.getQueryId().genPlanNodeId(), |
| path, |
| scanOrder, |
| limit, |
| offset, |
| null, |
| lastLevelUseWildcard); |
| sourceNodeList.add(alignedSeriesScanNode); |
| } else { |
| for (int i = 0; i < measurementList.size(); i++) { |
| MeasurementPath measurementPath = |
| new MeasurementPath(devicePath.concatNode(measurementList.get(i)), schemaList.get(i)); |
| SeriesScanNode seriesScanNode = |
| new SeriesScanNode( |
| context.getQueryId().genPlanNodeId(), |
| measurementPath, |
| scanOrder, |
| limit, |
| offset, |
| null); |
| sourceNodeList.add(seriesScanNode); |
| } |
| } |
| |
| this.root = convergeWithTimeJoin(sourceNodeList, scanOrder); |
| return this; |
| } |
| |
| public TemplatedLogicalPlanBuilder planFilter( |
| Expression filterExpression, boolean isGroupByTime, Ordering scanOrder) { |
| |
| if (filterExpression == null) { |
| return this; |
| } |
| |
| this.root = |
| new FilterNode( |
| context.getQueryId().genPlanNodeId(), |
| this.getRoot(), |
| null, |
| filterExpression, |
| isGroupByTime, |
| scanOrder); |
| |
| return this; |
| } |
| |
| @Override |
| public TemplatedLogicalPlanBuilder withNewRoot(PlanNode newRoot) { |
| this.root = newRoot; |
| return this; |
| } |
| } |