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

Class VectorPTFEvaluatorDecimalAvg

java.lang.Object

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

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

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

public class VectorPTFEvaluatorDecimalAvg
extends VectorPTFEvaluatorAbstractAvg<HiveDecimalWritable>

This class evaluates HiveDecimal 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 HiveDecimalWritable	avg
protected HiveDecimalWritable	temp

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
VectorPTFEvaluatorDecimalAvg(WindowFrameDef windowFrameDef, VectorExpression inputVecExpr, int outputColumnNum)

Method Summary

Modifier and Type	Method and Description
protected HiveDecimalWritable	computeValue(HiveDecimalWritable number)
protected HiveDecimalWritable	divide(HiveDecimalWritable number, long divisor)
void	doLastBatchWork()
void	evaluateGroupBatch(VectorizedRowBatch batch)
Object	getGroupResult()
ColumnVector.Type	getResultColumnVectorType()
HiveDecimalWritable	minus(HiveDecimalWritable t1, HiveDecimalWritable t2)
HiveDecimalWritable	plus(HiveDecimalWritable t1, HiveDecimalWritable t2)
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

temp

protected HiveDecimalWritable temp

avg

protected HiveDecimalWritable avg

Constructor Detail

VectorPTFEvaluatorDecimalAvg

public VectorPTFEvaluatorDecimalAvg(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 HiveDecimalWritable computeValue(HiveDecimalWritable number)

Specified by:

computeValue in class VectorPTFEvaluatorAbstractAvg<HiveDecimalWritable>

plus

public HiveDecimalWritable plus(HiveDecimalWritable t1,
                                HiveDecimalWritable t2)

Specified by:

plus in class VectorPTFEvaluatorAbstractAvg<HiveDecimalWritable>

minus

public HiveDecimalWritable minus(HiveDecimalWritable t1,
                                 HiveDecimalWritable t2)

Specified by:

minus in class VectorPTFEvaluatorAbstractAvg<HiveDecimalWritable>

divide

protected HiveDecimalWritable divide(HiveDecimalWritable number,
                                     long divisor)

Specified by:

divide in class VectorPTFEvaluatorAbstractAvg<HiveDecimalWritable>

resetEvaluator

public void resetEvaluator()

Specified by:

resetEvaluator in class VectorPTFEvaluatorBase