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

Class UDFQueryTransformer

java.lang.Object

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

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

All Implemented Interfaces:

LayerPointReader, YieldableReader

Direct Known Subclasses:

MappableUDFQueryRowTransformer, UniversalUDFQueryTransformer

public abstract class UDFQueryTransformer
extends Transformer

Field Summary

Fields

Modifier and Type	Field	Description
protected UDTFExecutor	executor
protected boolean	terminated
protected org.apache.iotdb.tsfile.file.metadata.enums.TSDataType	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

Modifier	Constructor	Description
protected	UDFQueryTransformer(UDTFExecutor executor)

Method Summary

Modifier and Type	Method	Description
org.apache.iotdb.tsfile.file.metadata.enums.TSDataType	getDataType()
protected boolean	terminate()

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

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.iotdb.db.mpp.transformation.api.LayerPointReader

isConstantPointReader

Field Detail

executor

protected final UDTFExecutor executor

tsDataType

protected org.apache.iotdb.tsfile.file.metadata.enums.TSDataType tsDataType

terminated

protected boolean terminated

Constructor Detail

UDFQueryTransformer

protected UDFQueryTransformer(UDTFExecutor executor)

Method Detail

terminate

protected final boolean terminate()
                           throws QueryProcessException

Throws:

QueryProcessException

getDataType

public final org.apache.iotdb.tsfile.file.metadata.enums.TSDataType getDataType()