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

Class LogicBinaryTransformer

java.lang.Object

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

org.apache.iotdb.db.mpp.transformation.dag.transformer.binary.BinaryTransformer

org.apache.iotdb.db.mpp.transformation.dag.transformer.binary.LogicBinaryTransformer

All Implemented Interfaces:

LayerPointReader, YieldableReader

Direct Known Subclasses:

LogicAndTransformer, LogicOrTransformer

public abstract class LogicBinaryTransformer
extends BinaryTransformer

Field Summary

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

isCurrentConstant, isLeftPointReaderConstant, isRightPointReaderConstant, leftPointReader, leftPointReaderDataType, rightPointReader, rightPointReaderDataType

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	LogicBinaryTransformer(LayerPointReader leftPointReader, LayerPointReader rightPointReader)

Method Summary

Modifier and Type	Method	Description
protected boolean	cacheValue()	if this method returns true, at least one of the cached field should be set
protected void	checkType()
protected abstract boolean	evaluate(boolean leftOperand, boolean rightOperand)
org.apache.iotdb.tsfile.file.metadata.enums.TSDataType	getDataType()
protected void	transformAndCache()
YieldableState	yieldValue()	if this method returns YieldableState.YIELDABLE, at least one of the cached field should be set

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

castCurrentValueToDoubleOperand, isConstantPointReader

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

Constructor Detail

LogicBinaryTransformer

protected LogicBinaryTransformer(LayerPointReader leftPointReader,
                                 LayerPointReader rightPointReader)

Method Detail

checkType

protected void checkType()

Specified by:

checkType in class BinaryTransformer

yieldValue

public YieldableState yieldValue()
                          throws QueryProcessException,
                                 java.io.IOException

Description copied from class: Transformer

if this method returns YieldableState.YIELDABLE, at least one of the cached field should be set

Overrides:

yieldValue in class BinaryTransformer

Throws:

QueryProcessException

java.io.IOException

cacheValue

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

Description copied from class: Transformer

if this method returns true, at least one of the cached field should be set

Overrides:

cacheValue in class BinaryTransformer

Throws:

QueryProcessException

java.io.IOException

evaluate

protected abstract boolean evaluate(boolean leftOperand,
                                    boolean rightOperand)

transformAndCache

protected void transformAndCache()
                          throws QueryProcessException,
                                 java.io.IOException

Specified by:

transformAndCache in class BinaryTransformer

Throws:

QueryProcessException

java.io.IOException

getDataType

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