| /* |
| * 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.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.utils.columngenerator.parameter.ColumnGeneratorParameter; |
| |
| import org.apache.tsfile.enums.TSDataType; |
| 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; |
| |
| public class ColumnInjectNode extends SingleChildProcessNode { |
| |
| private final int targetIndex; |
| private final ColumnGeneratorParameter columnGeneratorParameter; |
| |
| public ColumnInjectNode( |
| PlanNodeId id, int targetIndex, ColumnGeneratorParameter columnGeneratorParameter) { |
| super(id); |
| this.targetIndex = targetIndex; |
| this.columnGeneratorParameter = columnGeneratorParameter; |
| } |
| |
| public ColumnInjectNode( |
| PlanNodeId id, |
| PlanNode child, |
| int targetIndex, |
| ColumnGeneratorParameter columnGeneratorParameter) { |
| super(id, child); |
| this.targetIndex = targetIndex; |
| this.columnGeneratorParameter = columnGeneratorParameter; |
| } |
| |
| @Override |
| public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { |
| return visitor.visitColumnInject(this, context); |
| } |
| |
| public List<TSDataType> getGeneratedColumnTypes() { |
| return columnGeneratorParameter.getColumnTypes(); |
| } |
| |
| public int getTargetIndex() { |
| return targetIndex; |
| } |
| |
| public ColumnGeneratorParameter getColumnGeneratorParameter() { |
| return columnGeneratorParameter; |
| } |
| |
| @Override |
| public PlanNodeType getType() { |
| return PlanNodeType.COLUMN_INJECT; |
| } |
| |
| @Override |
| public PlanNode clone() { |
| return new ColumnInjectNode(getPlanNodeId(), this.targetIndex, this.columnGeneratorParameter); |
| } |
| |
| @Override |
| public List<String> getOutputColumnNames() { |
| List<String> outputColumnNames = new ArrayList<>(); |
| List<String> childOutputColumnNames = child.getOutputColumnNames(); |
| |
| // just need to append column names |
| if (targetIndex == childOutputColumnNames.size()) { |
| outputColumnNames.addAll(childOutputColumnNames); |
| outputColumnNames.addAll(columnGeneratorParameter.getColumnNames()); |
| return outputColumnNames; |
| } |
| |
| // insert extra column names into the right position |
| for (int i = 0; i < childOutputColumnNames.size(); i++) { |
| if (i == targetIndex) { |
| outputColumnNames.addAll(columnGeneratorParameter.getColumnNames()); |
| } |
| outputColumnNames.add(childOutputColumnNames.get(i)); |
| } |
| return outputColumnNames; |
| } |
| |
| @Override |
| protected void serializeAttributes(ByteBuffer byteBuffer) { |
| PlanNodeType.COLUMN_INJECT.serialize(byteBuffer); |
| ReadWriteIOUtils.write(targetIndex, byteBuffer); |
| columnGeneratorParameter.serialize(byteBuffer); |
| } |
| |
| @Override |
| protected void serializeAttributes(DataOutputStream stream) throws IOException { |
| PlanNodeType.COLUMN_INJECT.serialize(stream); |
| ReadWriteIOUtils.write(targetIndex, stream); |
| columnGeneratorParameter.serialize(stream); |
| } |
| |
| public static ColumnInjectNode deserialize(ByteBuffer byteBuffer) { |
| int targetIndex = ReadWriteIOUtils.readInt(byteBuffer); |
| ColumnGeneratorParameter columnGeneratorParameter = |
| ColumnGeneratorParameter.deserialize(byteBuffer); |
| PlanNodeId planNodeId = PlanNodeId.deserialize(byteBuffer); |
| return new ColumnInjectNode(planNodeId, targetIndex, columnGeneratorParameter); |
| } |
| |
| @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; |
| } |
| ColumnInjectNode that = (ColumnInjectNode) o; |
| return targetIndex == that.targetIndex |
| && columnGeneratorParameter.equals(that.columnGeneratorParameter); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(super.hashCode(), targetIndex, columnGeneratorParameter); |
| } |
| } |