org.apache.hadoop.hive.ql.exec.vector.ptf

Class VectorPTFEvaluatorDoubleAvg

java.lang.Object

org.apache.hadoop.hive.ql.exec.vector.ptf.VectorPTFEvaluatorBase

org.apache.hadoop.hive.ql.exec.vector.ptf.VectorPTFEvaluatorAbstractAvg<Double>

org.apache.hadoop.hive.ql.exec.vector.ptf.VectorPTFEvaluatorDoubleAvg

public class VectorPTFEvaluatorDoubleAvg
extends VectorPTFEvaluatorAbstractAvg<Double>

This class evaluates double avg() for a PTF group. Sum up non-null column values; group result is sum / non-null count.

Field Summary

Fields

Modifier and Type	Field and Description
protected double	avg

Fields inherited from class org.apache.hadoop.hive.ql.exec.vector.ptf.VectorPTFEvaluatorAbstractAvg

isGroupResultNull, nonNullGroupCount, previousCount, previousRange, previousSum, sum

Fields inherited from class org.apache.hadoop.hive.ql.exec.vector.ptf.VectorPTFEvaluatorBase

inputColumnNum, LOG, outputColumnNum

Constructor Summary

Constructors

Constructor and Description
VectorPTFEvaluatorDoubleAvg(WindowFrameDef windowFrameDef, VectorExpression inputVecExpr, int outputColumnNum)

Method Summary

Modifier and Type	Method and Description
protected Double	computeValue(Double number)
protected Double	divide(Double number, long divisor)
void	doLastBatchWork()
void	evaluateGroupBatch(VectorizedRowBatch batch)
Object	getGroupResult()
ColumnVector.Type	getResultColumnVectorType()
protected Double	minus(Double number1, Double number2)
protected Double	plus(Double number1, Double number2)
void	resetEvaluator()

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.ptf.VectorPTFEvaluatorAbstractAvg

canRunOptimizedCalculation, isGroupResultNull, onPartitionEnd, onResultCalculated, runOnRange, streamsResult

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.ptf.VectorPTFEvaluatorBase

evaluateInputExpr, getNullsLast, getOutputColumnNum, isCacheableForRange, mapCustomColumns, setNullsLast

Methods inherited from class java.lang.Object

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

Field Detail

avg

protected double avg

Constructor Detail

VectorPTFEvaluatorDoubleAvg

public VectorPTFEvaluatorDoubleAvg(WindowFrameDef windowFrameDef,
                                   VectorExpression inputVecExpr,
                                   int outputColumnNum)

Method Detail

evaluateGroupBatch

public void evaluateGroupBatch(VectorizedRowBatch batch)
                        throws HiveException

Specified by:

evaluateGroupBatch in class VectorPTFEvaluatorBase

Throws:

HiveException

doLastBatchWork

public void doLastBatchWork()

Overrides:

doLastBatchWork in class VectorPTFEvaluatorBase

getResultColumnVectorType

public ColumnVector.Type getResultColumnVectorType()

Specified by:

getResultColumnVectorType in class VectorPTFEvaluatorBase

getGroupResult

public Object getGroupResult()

Overrides:

getGroupResult in class VectorPTFEvaluatorBase

computeValue

protected Double computeValue(Double number)

Specified by:

computeValue in class VectorPTFEvaluatorAbstractAvg<Double>

plus

protected Double plus(Double number1,
                      Double number2)

Specified by:

plus in class VectorPTFEvaluatorAbstractAvg<Double>

minus

protected Double minus(Double number1,
                       Double number2)

Specified by:

minus in class VectorPTFEvaluatorAbstractAvg<Double>

divide

protected Double divide(Double number,
                        long divisor)

Specified by:

divide in class VectorPTFEvaluatorAbstractAvg<Double>

resetEvaluator

public void resetEvaluator()

Specified by:

resetEvaluator in class VectorPTFEvaluatorBase