| /* |
| * 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.plan.node.process; |
| |
| import org.apache.iotdb.db.queryengine.common.header.ColumnHeaderConstant; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNode; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeId; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeType; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanVisitor; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.parameter.AggregationDescriptor; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.parameter.GroupByTimeParameter; |
| import org.apache.iotdb.db.queryengine.plan.statement.component.Ordering; |
| |
| import org.apache.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.stream.Collectors; |
| |
| public class SlidingWindowAggregationNode extends SingleChildProcessNode { |
| |
| // The list of aggregate functions, each AggregateDescriptor will be output as one column of |
| // result TsBlock |
| private List<AggregationDescriptor> aggregationDescriptorList; |
| |
| // The parameter of `group by time`. |
| private final GroupByTimeParameter groupByTimeParameter; |
| |
| protected Ordering scanOrder; |
| |
| private boolean outputEndTime = false; |
| |
| public SlidingWindowAggregationNode( |
| PlanNodeId id, |
| List<AggregationDescriptor> aggregationDescriptorList, |
| GroupByTimeParameter groupByTimeParameter, |
| Ordering scanOrder, |
| boolean outputEndTime) { |
| super(id); |
| this.aggregationDescriptorList = aggregationDescriptorList; |
| this.groupByTimeParameter = groupByTimeParameter; |
| this.scanOrder = scanOrder; |
| this.outputEndTime = outputEndTime; |
| } |
| |
| public SlidingWindowAggregationNode( |
| PlanNodeId id, |
| PlanNode child, |
| List<AggregationDescriptor> aggregationDescriptorList, |
| GroupByTimeParameter groupByTimeParameter, |
| Ordering scanOrder) { |
| super(id, child); |
| this.aggregationDescriptorList = aggregationDescriptorList; |
| this.groupByTimeParameter = groupByTimeParameter; |
| this.scanOrder = scanOrder; |
| } |
| |
| public boolean isOutputEndTime() { |
| return outputEndTime; |
| } |
| |
| public void setOutputEndTime(boolean outputEndTime) { |
| this.outputEndTime = outputEndTime; |
| } |
| |
| public List<AggregationDescriptor> getAggregationDescriptorList() { |
| return aggregationDescriptorList; |
| } |
| |
| public void setAggregationDescriptorList(List<AggregationDescriptor> aggregationDescriptorList) { |
| this.aggregationDescriptorList = aggregationDescriptorList; |
| } |
| |
| public GroupByTimeParameter getGroupByTimeParameter() { |
| return groupByTimeParameter; |
| } |
| |
| public Ordering getScanOrder() { |
| return scanOrder; |
| } |
| |
| @Override |
| public PlanNodeType getType() { |
| return PlanNodeType.SLIDING_WINDOW_AGGREGATION; |
| } |
| |
| @Override |
| public PlanNode clone() { |
| return new SlidingWindowAggregationNode( |
| getPlanNodeId(), |
| getAggregationDescriptorList(), |
| getGroupByTimeParameter(), |
| getScanOrder(), |
| isOutputEndTime()); |
| } |
| |
| @Override |
| public List<String> getOutputColumnNames() { |
| List<String> outputColumnNames = new ArrayList<>(); |
| if (outputEndTime) { |
| outputColumnNames.add(ColumnHeaderConstant.ENDTIME); |
| } |
| outputColumnNames.addAll( |
| aggregationDescriptorList.stream() |
| .map(AggregationDescriptor::getOutputColumnNames) |
| .flatMap(List::stream) |
| .collect(Collectors.toList())); |
| return outputColumnNames; |
| } |
| |
| @Override |
| public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { |
| return visitor.visitSlidingWindowAggregation(this, context); |
| } |
| |
| @Override |
| protected void serializeAttributes(ByteBuffer byteBuffer) { |
| PlanNodeType.SLIDING_WINDOW_AGGREGATION.serialize(byteBuffer); |
| ReadWriteIOUtils.write(aggregationDescriptorList.size(), byteBuffer); |
| for (AggregationDescriptor aggregationDescriptor : aggregationDescriptorList) { |
| aggregationDescriptor.serialize(byteBuffer); |
| } |
| if (groupByTimeParameter == null) { |
| ReadWriteIOUtils.write((byte) 0, byteBuffer); |
| } else { |
| ReadWriteIOUtils.write((byte) 1, byteBuffer); |
| groupByTimeParameter.serialize(byteBuffer); |
| } |
| ReadWriteIOUtils.write(scanOrder.ordinal(), byteBuffer); |
| ReadWriteIOUtils.write(outputEndTime, byteBuffer); |
| } |
| |
| @Override |
| protected void serializeAttributes(DataOutputStream stream) throws IOException { |
| PlanNodeType.SLIDING_WINDOW_AGGREGATION.serialize(stream); |
| ReadWriteIOUtils.write(aggregationDescriptorList.size(), stream); |
| for (AggregationDescriptor aggregationDescriptor : aggregationDescriptorList) { |
| aggregationDescriptor.serialize(stream); |
| } |
| if (groupByTimeParameter == null) { |
| ReadWriteIOUtils.write((byte) 0, stream); |
| } else { |
| ReadWriteIOUtils.write((byte) 1, stream); |
| groupByTimeParameter.serialize(stream); |
| } |
| ReadWriteIOUtils.write(scanOrder.ordinal(), stream); |
| ReadWriteIOUtils.write(outputEndTime, stream); |
| } |
| |
| public static SlidingWindowAggregationNode deserialize(ByteBuffer byteBuffer) { |
| int descriptorSize = ReadWriteIOUtils.readInt(byteBuffer); |
| List<AggregationDescriptor> aggregationDescriptorList = new ArrayList<>(); |
| while (descriptorSize > 0) { |
| aggregationDescriptorList.add(AggregationDescriptor.deserialize(byteBuffer)); |
| descriptorSize--; |
| } |
| byte isNull = ReadWriteIOUtils.readByte(byteBuffer); |
| GroupByTimeParameter groupByTimeParameter = null; |
| if (isNull == 1) { |
| groupByTimeParameter = GroupByTimeParameter.deserialize(byteBuffer); |
| } |
| Ordering scanOrder = Ordering.values()[ReadWriteIOUtils.readInt(byteBuffer)]; |
| boolean outputEndTime = ReadWriteIOUtils.readBool(byteBuffer); |
| PlanNodeId planNodeId = PlanNodeId.deserialize(byteBuffer); |
| return new SlidingWindowAggregationNode( |
| planNodeId, aggregationDescriptorList, groupByTimeParameter, scanOrder, outputEndTime); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| if (!super.equals(o)) { |
| return false; |
| } |
| SlidingWindowAggregationNode that = (SlidingWindowAggregationNode) o; |
| return Objects.equals(aggregationDescriptorList, that.aggregationDescriptorList) |
| && Objects.equals(groupByTimeParameter, that.groupByTimeParameter) |
| && scanOrder == that.scanOrder |
| && outputEndTime == that.outputEndTime; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash( |
| super.hashCode(), |
| aggregationDescriptorList, |
| groupByTimeParameter, |
| scanOrder, |
| outputEndTime); |
| } |
| |
| public String toString() { |
| return String.format("SlidingWindowAggregationNode-%s", getPlanNodeId()); |
| } |
| } |