| /* |
| * 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.expression.leaf; |
| |
| import org.apache.iotdb.commons.path.MeasurementPath; |
| import org.apache.iotdb.commons.path.PartialPath; |
| import org.apache.iotdb.commons.path.PathDeserializeUtil; |
| import org.apache.iotdb.db.queryengine.plan.expression.ExpressionType; |
| import org.apache.iotdb.db.queryengine.plan.expression.visitor.ExpressionVisitor; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.parameter.InputLocation; |
| import org.apache.iotdb.db.queryengine.transformation.dag.memory.LayerMemoryAssigner; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class TimeSeriesOperand extends LeafOperand { |
| |
| private PartialPath path; |
| |
| public TimeSeriesOperand(PartialPath path) { |
| this.path = path; |
| } |
| |
| public TimeSeriesOperand(ByteBuffer byteBuffer) { |
| path = (PartialPath) PathDeserializeUtil.deserialize(byteBuffer); |
| } |
| |
| public static TimeSeriesOperand constructColumnHeaderExpression( |
| String columnName, TSDataType dataType) { |
| MeasurementPath measurementPath = |
| new MeasurementPath(new PartialPath(columnName, false), dataType); |
| return new TimeSeriesOperand(measurementPath); |
| } |
| |
| public PartialPath getPath() { |
| return path; |
| } |
| |
| public void setPath(PartialPath path) { |
| this.path = path; |
| } |
| |
| @Override |
| public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) { |
| return visitor.visitTimeSeriesOperand(this, context); |
| } |
| |
| @Override |
| public boolean isConstantOperandInternal() { |
| return false; |
| } |
| |
| @Override |
| public void bindInputLayerColumnIndexWithExpression( |
| Map<String, List<InputLocation>> inputLocations) { |
| final String digest = getExpressionString(); |
| |
| if (inputLocations.containsKey(digest)) { |
| inputColumnIndex = inputLocations.get(digest).get(0).getValueColumnIndex(); |
| } |
| } |
| |
| @Override |
| public void updateStatisticsForMemoryAssigner(LayerMemoryAssigner memoryAssigner) { |
| memoryAssigner.increaseExpressionReference(this); |
| } |
| |
| @Override |
| public String getExpressionStringInternal() { |
| return path.isMeasurementAliasExists() ? path.getFullPathWithAlias() : path.getFullPath(); |
| } |
| |
| @Override |
| public ExpressionType getExpressionType() { |
| return ExpressionType.TIMESERIES; |
| } |
| |
| @Override |
| protected void serialize(ByteBuffer byteBuffer) { |
| path.serialize(byteBuffer); |
| } |
| |
| @Override |
| protected void serialize(DataOutputStream stream) throws IOException { |
| path.serialize(stream); |
| } |
| } |