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

Class VectorPTFEvaluatorDenseRank

java.lang.Object

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

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

public class VectorPTFEvaluatorDenseRank
extends VectorPTFEvaluatorBase

This class evaluates rank() for a PTF group. Dense rank starts at 1; the same dense rank is streamed to the output column as repeated; after the last group row, the dense rank incremented by 1.

Field Summary

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

inputColumnNum, LOG, outputColumnNum

Constructor Summary

Constructors

Constructor and Description
VectorPTFEvaluatorDenseRank(WindowFrameDef windowFrameDef, int outputColumnNum)

Method Summary

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

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

canRunOptimizedCalculation, evaluateInputExpr, getNullsLast, getOutputColumnNum, isCacheableForRange, mapCustomColumns, onPartitionEnd, onResultCalculated, runOnRange, setNullsLast

Methods inherited from class java.lang.Object

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

Constructor Detail

VectorPTFEvaluatorDenseRank

public VectorPTFEvaluatorDenseRank(WindowFrameDef windowFrameDef,
                                   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

streamsResult

public boolean streamsResult()

Specified by:

streamsResult in class VectorPTFEvaluatorBase

isGroupResultNull

public boolean isGroupResultNull()

Overrides:

isGroupResultNull in class VectorPTFEvaluatorBase

getResultColumnVectorType

public ColumnVector.Type getResultColumnVectorType()

Specified by:

getResultColumnVectorType in class VectorPTFEvaluatorBase

getGroupResult

public Object getGroupResult()

Overrides:

getGroupResult in class VectorPTFEvaluatorBase

resetEvaluator

public void resetEvaluator()

Specified by:

resetEvaluator in class VectorPTFEvaluatorBase