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

Class UDFQueryRowTransformer

java.lang.Object

org.apache.iotdb.db.mpp.transformation.dag.transformer.Transformer

org.apache.iotdb.db.mpp.transformation.dag.transformer.multi.UDFQueryTransformer

org.apache.iotdb.db.mpp.transformation.dag.transformer.multi.UniversalUDFQueryTransformer

org.apache.iotdb.db.mpp.transformation.dag.transformer.multi.UDFQueryRowTransformer

All Implemented Interfaces:

LayerPointReader, YieldableReader

public class UDFQueryRowTransformer
extends UniversalUDFQueryTransformer

Field Summary

Fields

Modifier and Type	Field	Description
protected LayerRowReader	layerRowReader

Fields inherited from class org.apache.iotdb.db.mpp.transformation.dag.transformer.multi.UniversalUDFQueryTransformer

isLayerPointReaderConstant, layerPointReader

Fields inherited from class org.apache.iotdb.db.mpp.transformation.dag.transformer.multi.UDFQueryTransformer

executor, terminated, tsDataType

Fields inherited from class org.apache.iotdb.db.mpp.transformation.dag.transformer.Transformer

cachedBinary, cachedBoolean, cachedDouble, cachedFloat, cachedInt, cachedLong, cachedTime, currentNull, hasCachedValue

Constructor Summary

Constructors

Constructor	Description
UDFQueryRowTransformer(LayerRowReader layerRowReader, UDTFExecutor executor)

Method Summary

Modifier and Type	Method	Description
protected boolean	executeUDFOnce()
protected YieldableState	tryExecuteUDFOnce()

Methods inherited from class org.apache.iotdb.db.mpp.transformation.dag.transformer.multi.UniversalUDFQueryTransformer

cacheValue, cacheValueFromUDFOutput, isConstantPointReader, yieldValue

Methods inherited from class org.apache.iotdb.db.mpp.transformation.dag.transformer.multi.UDFQueryTransformer

getDataType, terminate

Methods inherited from class org.apache.iotdb.db.mpp.transformation.dag.transformer.Transformer

currentBinary, currentBoolean, currentDouble, currentFloat, currentInt, currentLong, currentTime, isCurrentNull, next, readyForNext, yield

Methods inherited from class java.lang.Object

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

Field Detail

layerRowReader

protected final LayerRowReader layerRowReader

Constructor Detail

UDFQueryRowTransformer

public UDFQueryRowTransformer(LayerRowReader layerRowReader,
                              UDTFExecutor executor)

Method Detail

tryExecuteUDFOnce

protected YieldableState tryExecuteUDFOnce()
                                    throws QueryProcessException,
                                           java.io.IOException

Specified by:

tryExecuteUDFOnce in class UniversalUDFQueryTransformer

Throws:

QueryProcessException

java.io.IOException

executeUDFOnce

protected boolean executeUDFOnce()
                          throws java.io.IOException,
                                 QueryProcessException

Specified by:

executeUDFOnce in class UniversalUDFQueryTransformer

Throws:

java.io.IOException

QueryProcessException