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

Class VectorPTFEvaluatorStreamingLongAvg

java.lang.Object

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

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

public class VectorPTFEvaluatorStreamingLongAvg
extends VectorPTFEvaluatorBase

This class evaluates long 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
protected boolean	isNull
protected long	sum

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

inputColumnNum, LOG, outputColumnNum

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
void	evaluateGroupBatch(VectorizedRowBatch batch)
ColumnVector.Type	getResultColumnVectorType()
void	resetEvaluator()
boolean	streamsResult()

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

canRunOptimizedCalculation, doLastBatchWork, evaluateInputExpr, getGroupResult, getNullsLast, getOutputColumnNum, isCacheableForRange, isGroupResultNull, mapCustomColumns, onPartitionEnd, onResultCalculated, runOnRange, setNullsLast

Methods inherited from class java.lang.Object

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

Field Detail

isNull

protected boolean isNull

sum

protected long sum

avg

protected double avg

Constructor Detail

VectorPTFEvaluatorStreamingLongAvg

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

Method Detail

evaluateGroupBatch

public void evaluateGroupBatch(VectorizedRowBatch batch)
                        throws HiveException

Specified by:

evaluateGroupBatch in class VectorPTFEvaluatorBase

Throws:

HiveException

streamsResult

public boolean streamsResult()

Specified by:

streamsResult in class VectorPTFEvaluatorBase

getResultColumnVectorType

public ColumnVector.Type getResultColumnVectorType()

Specified by:

getResultColumnVectorType in class VectorPTFEvaluatorBase

resetEvaluator

public void resetEvaluator()

Specified by:

resetEvaluator in class VectorPTFEvaluatorBase