Package org.apache.iotdb.db.mpp.transformation.dag.column.multi

Class MappableUDFColumnTransformer

java.lang.Object

org.apache.iotdb.db.mpp.transformation.dag.column.ColumnTransformer

org.apache.iotdb.db.mpp.transformation.dag.column.multi.MappableUDFColumnTransformer

public class MappableUDFColumnTransformer
extends ColumnTransformer

Field Summary

Fields inherited from class org.apache.iotdb.db.mpp.transformation.dag.column.ColumnTransformer

columnCache, referenceCount, returnType

Constructor Summary

Constructors

Constructor	Description
MappableUDFColumnTransformer(org.apache.iotdb.tsfile.read.common.type.Type returnType, ColumnTransformer[] inputColumnTransformers, org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] inputDataTypes, UDTFExecutor executor)

Method Summary

Modifier and Type	Method	Description
protected void	checkType()
void	close()
void	evaluate()	Responsible for the calculation
ColumnTransformer[]	getInputColumnTransformers()

Methods inherited from class org.apache.iotdb.db.mpp.transformation.dag.column.ColumnTransformer

addReferenceCount, getColumn, getColumnCachePositionCount, getType, initializeColumnCache, isReturnTypeNumeric, tryEvaluate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MappableUDFColumnTransformer

public MappableUDFColumnTransformer(org.apache.iotdb.tsfile.read.common.type.Type returnType,
                                    ColumnTransformer[] inputColumnTransformers,
                                    org.apache.iotdb.tsfile.file.metadata.enums.TSDataType[] inputDataTypes,
                                    UDTFExecutor executor)

Method Detail

evaluate

public void evaluate()

Description copied from class: ColumnTransformer

Responsible for the calculation

Specified by:

evaluate in class ColumnTransformer

checkType

protected void checkType()

Specified by:

checkType in class ColumnTransformer

getInputColumnTransformers

public ColumnTransformer[] getInputColumnTransformers()

close

public void close()

Overrides:

close in class ColumnTransformer