org.apache.hadoop.hive.ql.udf.generic

Class GenericUDAFComputeStats.GenericUDAFDateStatsEvaluator

java.lang.Object

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator<DateWritable,DateObjectInspector>

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeStats.GenericUDAFDateStatsEvaluator

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

GenericUDAFComputeStats

public static class GenericUDAFComputeStats.GenericUDAFDateStatsEvaluator
extends GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator<DateWritable,DateObjectInspector>

GenericUDAFDateStatsEvaluator High/low value will be saved in stats DB as long value representing days since epoch.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	GenericUDAFComputeStats.GenericUDAFDateStatsEvaluator.DateStatsAgg

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator

GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator.NumericStatsAgg

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

GenericUDAFEvaluator.AbstractAggregationBuffer, GenericUDAFEvaluator.AggregationBuffer, GenericUDAFEvaluator.AggregationType, GenericUDAFEvaluator.Mode

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator

countNullsField, countNullsFieldOI, inputOI, MAX_BIT_VECTORS, maxField, maxFieldOI, minField, minFieldOI, ndvField, ndvFieldOI, numBitVectorsField, numBitVectorsFieldOI, numVectorsOI, partialResult, result, soi, warned

Constructor Summary

Constructors

Constructor and Description
GenericUDAFComputeStats.GenericUDAFDateStatsEvaluator()

Method Summary

Methods

Modifier and Type	Method and Description
GenericUDAFEvaluator.AggregationBuffer	getNewAggregationBuffer() Get a new aggregation object.
protected DateObjectInspector	getValueObjectInspector()
void	reset(GenericUDAFEvaluator.AggregationBuffer agg) Reset the aggregation.

Methods inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator

init, iterate, merge, terminate, terminatePartial

Methods inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

aggregate, close, configure, evaluate, getWindowingEvaluator, isEstimable

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericUDAFComputeStats.GenericUDAFDateStatsEvaluator

public GenericUDAFComputeStats.GenericUDAFDateStatsEvaluator()

Method Detail

getValueObjectInspector

protected DateObjectInspector getValueObjectInspector()

Specified by:

getValueObjectInspector in class GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator<DateWritable,DateObjectInspector>

getNewAggregationBuffer

public GenericUDAFEvaluator.AggregationBuffer getNewAggregationBuffer()
                                                               throws HiveException

Description copied from class: GenericUDAFEvaluator

Get a new aggregation object.

Specified by:

getNewAggregationBuffer in class GenericUDAFEvaluator

Throws:

HiveException

reset

public void reset(GenericUDAFEvaluator.AggregationBuffer agg)
           throws HiveException

Description copied from class: GenericUDAFEvaluator

Reset the aggregation. This is useful if we want to reuse the same aggregation.

Specified by:

reset in class GenericUDAFEvaluator

Throws:

HiveException