| /* |
| * 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.source; |
| |
| import org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet; |
| import org.apache.iotdb.commons.path.AlignedPath; |
| import org.apache.iotdb.commons.path.PartialPath; |
| import org.apache.iotdb.commons.path.PathDeserializeUtil; |
| import org.apache.iotdb.db.queryengine.plan.analyze.TypeProvider; |
| 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.PlanNodeId; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeType; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeUtil; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanVisitor; |
| import org.apache.iotdb.db.queryengine.plan.statement.component.Ordering; |
| import org.apache.iotdb.tsfile.common.constant.TsFileConstant; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import javax.annotation.Nullable; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| public class AlignedSeriesScanNode extends SeriesScanSourceNode { |
| |
| // The paths of the target series which will be scanned. |
| private final AlignedPath alignedPath; |
| |
| // used for limit and offset push down optimizer, if we select all columns from aligned device, we |
| // can use statistics to skip |
| private boolean queryAllSensors = false; |
| |
| public AlignedSeriesScanNode(PlanNodeId id, AlignedPath alignedPath) { |
| super(id); |
| this.alignedPath = alignedPath; |
| } |
| |
| public AlignedSeriesScanNode( |
| PlanNodeId id, AlignedPath alignedPath, Ordering scanOrder, boolean lastLevelUseWildcard) { |
| super(id, scanOrder); |
| this.alignedPath = alignedPath; |
| this.queryAllSensors = lastLevelUseWildcard; |
| } |
| |
| public AlignedSeriesScanNode( |
| PlanNodeId id, |
| AlignedPath alignedPath, |
| Ordering scanOrder, |
| long pushDownLimit, |
| long pushDownOffset, |
| TRegionReplicaSet dataRegionReplicaSet, |
| boolean lastLevelUseWildcard) { |
| super(id, scanOrder, pushDownLimit, pushDownOffset, dataRegionReplicaSet); |
| this.alignedPath = alignedPath; |
| this.queryAllSensors = lastLevelUseWildcard; |
| } |
| |
| public AlignedSeriesScanNode( |
| PlanNodeId id, |
| AlignedPath alignedPath, |
| Ordering scanOrder, |
| @Nullable Expression pushDownPredicate, |
| long pushDownLimit, |
| long pushDownOffset, |
| TRegionReplicaSet dataRegionReplicaSet, |
| boolean lastLevelUseWildcard) { |
| super(id, scanOrder, pushDownPredicate, pushDownLimit, pushDownOffset, dataRegionReplicaSet); |
| this.alignedPath = alignedPath; |
| this.queryAllSensors = lastLevelUseWildcard; |
| } |
| |
| public AlignedPath getAlignedPath() { |
| return alignedPath; |
| } |
| |
| public boolean isQueryAllSensors() { |
| return queryAllSensors; |
| } |
| |
| @Override |
| public void addChild(PlanNode child) { |
| throw new UnsupportedOperationException("no child is allowed for AlignedSeriesScanNode"); |
| } |
| |
| @Override |
| public PlanNodeType getType() { |
| return PlanNodeType.ALIGNED_SERIES_SCAN; |
| } |
| |
| @Override |
| public PlanNode clone() { |
| return new AlignedSeriesScanNode( |
| getPlanNodeId(), |
| getAlignedPath(), |
| getScanOrder(), |
| getPushDownPredicate(), |
| getPushDownLimit(), |
| getPushDownOffset(), |
| getRegionReplicaSet(), |
| isQueryAllSensors()); |
| } |
| |
| @Override |
| public List<String> getOutputColumnNames() { |
| List<String> outputColumnNames = new ArrayList<>(); |
| String deviceName = alignedPath.getDevice(); |
| for (String measurement : alignedPath.getMeasurementList()) { |
| outputColumnNames.add(deviceName.concat(TsFileConstant.PATH_SEPARATOR + measurement)); |
| } |
| return outputColumnNames; |
| } |
| |
| @Override |
| public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { |
| return visitor.visitAlignedSeriesScan(this, context); |
| } |
| |
| @Override |
| protected void serializeAttributes(ByteBuffer byteBuffer) { |
| PlanNodeType.ALIGNED_SERIES_SCAN.serialize(byteBuffer); |
| alignedPath.serialize(byteBuffer); |
| ReadWriteIOUtils.write(scanOrder.ordinal(), byteBuffer); |
| if (pushDownPredicate == null) { |
| ReadWriteIOUtils.write((byte) 0, byteBuffer); |
| } else { |
| ReadWriteIOUtils.write((byte) 1, byteBuffer); |
| Expression.serialize(pushDownPredicate, byteBuffer); |
| } |
| ReadWriteIOUtils.write(pushDownLimit, byteBuffer); |
| ReadWriteIOUtils.write(pushDownOffset, byteBuffer); |
| ReadWriteIOUtils.write(queryAllSensors, byteBuffer); |
| } |
| |
| @Override |
| protected void serializeAttributes(DataOutputStream stream) throws IOException { |
| PlanNodeType.ALIGNED_SERIES_SCAN.serialize(stream); |
| alignedPath.serialize(stream); |
| ReadWriteIOUtils.write(scanOrder.ordinal(), stream); |
| if (pushDownPredicate == null) { |
| ReadWriteIOUtils.write((byte) 0, stream); |
| } else { |
| ReadWriteIOUtils.write((byte) 1, stream); |
| Expression.serialize(pushDownPredicate, stream); |
| } |
| ReadWriteIOUtils.write(pushDownLimit, stream); |
| ReadWriteIOUtils.write(pushDownOffset, stream); |
| ReadWriteIOUtils.write(queryAllSensors, stream); |
| } |
| |
| public static AlignedSeriesScanNode deserialize(ByteBuffer byteBuffer) { |
| AlignedPath alignedPath = (AlignedPath) PathDeserializeUtil.deserialize(byteBuffer); |
| Ordering scanOrder = Ordering.values()[ReadWriteIOUtils.readInt(byteBuffer)]; |
| byte isNull = ReadWriteIOUtils.readByte(byteBuffer); |
| Expression pushDownPredicate = null; |
| if (isNull == 1) { |
| pushDownPredicate = Expression.deserialize(byteBuffer); |
| } |
| long limit = ReadWriteIOUtils.readLong(byteBuffer); |
| long offset = ReadWriteIOUtils.readLong(byteBuffer); |
| boolean queryAllSensors = ReadWriteIOUtils.readBool(byteBuffer); |
| PlanNodeId planNodeId = PlanNodeId.deserialize(byteBuffer); |
| return new AlignedSeriesScanNode( |
| planNodeId, |
| alignedPath, |
| scanOrder, |
| pushDownPredicate, |
| limit, |
| offset, |
| null, |
| queryAllSensors); |
| } |
| |
| @Override |
| public void serializeUseTemplate(DataOutputStream stream, TypeProvider typeProvider) |
| throws IOException { |
| PlanNodeType.ALIGNED_SERIES_SCAN.serialize(stream); |
| id.serialize(stream); |
| ReadWriteIOUtils.write(alignedPath.getNodes().length, stream); |
| for (String node : alignedPath.getNodes()) { |
| ReadWriteIOUtils.write(node, stream); |
| } |
| } |
| |
| public static AlignedSeriesScanNode deserializeUseTemplate( |
| ByteBuffer byteBuffer, TypeProvider typeProvider) { |
| PlanNodeId planNodeId = PlanNodeId.deserialize(byteBuffer); |
| |
| int nodeSize = ReadWriteIOUtils.readInt(byteBuffer); |
| String[] nodes = new String[nodeSize]; |
| for (int i = 0; i < nodeSize; i++) { |
| nodes[i] = ReadWriteIOUtils.readString(byteBuffer); |
| } |
| AlignedPath alignedPath = new AlignedPath(new PartialPath(nodes)); |
| alignedPath.setMeasurementList(typeProvider.getTemplatedInfo().getMeasurementList()); |
| alignedPath.addSchemas(typeProvider.getTemplatedInfo().getSchemaList()); |
| |
| return new AlignedSeriesScanNode( |
| planNodeId, |
| alignedPath, |
| typeProvider.getTemplatedInfo().getScanOrder(), |
| typeProvider.getTemplatedInfo().getPushDownPredicate(), |
| typeProvider.getTemplatedInfo().getLimitValue(), |
| typeProvider.getTemplatedInfo().getOffsetValue(), |
| null, |
| typeProvider.getTemplatedInfo().isQueryAllSensors()); |
| } |
| |
| @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; |
| } |
| AlignedSeriesScanNode that = (AlignedSeriesScanNode) o; |
| return queryAllSensors == that.queryAllSensors && alignedPath.equals(that.alignedPath); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(super.hashCode(), alignedPath, queryAllSensors); |
| } |
| |
| public String toString() { |
| return String.format( |
| "AlignedSeriesScanNode-%s:[SeriesPath: %s, DataRegion: %s]", |
| this.getPlanNodeId(), |
| this.getAlignedPath().getFormattedString(), |
| PlanNodeUtil.printRegionReplicaSet(getRegionReplicaSet())); |
| } |
| |
| @Override |
| public PartialPath getPartitionPath() { |
| return getAlignedPath(); |
| } |
| } |