Package org.apache.druid.segment.incremental

Class OnHeapAggregateProjection

java.lang.Object

org.apache.druid.segment.incremental.OnHeapAggregateProjection

All Implemented Interfaces:

Expr.InputBindingInspector, ColumnInspector, IncrementalIndexRowSelector

public class OnHeapAggregateProjection
extends Object
implements IncrementalIndexRowSelector

Projection of OnheapIncrementalIndex for AggregateProjectionSpec

Constructor Summary

Constructors

Constructor	Description
OnHeapAggregateProjection(AggregateProjectionMetadata.Schema schema, List<IncrementalIndex.DimensionDesc> dimensions, Map<String,IncrementalIndex.DimensionDesc> dimensionsMap, int[] parentDimensionIndex, long minTimestamp, boolean useMaxMemoryEstimates, long maxBytesPerRowForAggregators)

Method Summary

Modifier and Type	Method	Description
void	addToFacts(IncrementalIndexRow key, InputRow inputRow, List<String> parseExceptionMessages, AtomicLong totalSizeInBytes)	Add row to projection factsHolder, updating totalSizeInBytes estimate
ColumnCapabilities	getColumnCapabilities(String column)	Returns capabilities of a particular column.
ColumnFormat	getColumnFormat(String columnName)	Get ColumnFormat for a dimension, metrics, or time column, or null if the column does not exist
IncrementalIndex.DimensionDesc	getDimension(String columnName)	get IncrementalIndex.DimensionDesc for the specified column, if available, which provides access to things like DimensionIndexer and DimensionHandler as well as column capabilities and position within the row
List<String>	getDimensionNames(boolean includeTime)	Returns list of dimension names for the row selector, optionally including the time column.
List<IncrementalIndex.DimensionDesc>	getDimensions()	Returns list of IncrementalIndex.DimensionDesc for the row selector
Map<String,IncrementalIndex.DimensionDesc>	getDimensionsMap()
FactsHolder	getFacts()	Get the FactsHolder containing all of the IncrementalIndexRow backing this selector
int	getLastRowIndex()	Highest value IncrementalIndexRow.getRowIndex() available in this selector.
IncrementalIndex.MetricDesc	getMetric(String columnName)	Get IncrementalIndex.MetricDesc which provides column capabilities and position in the aggregators section of the row
double	getMetricDoubleValue(int rowOffset, int aggOffset)
float	getMetricFloatValue(int rowOffset, int aggOffset)
long	getMetricLongValue(int rowOffset, int aggOffset)
List<String>	getMetricNames()	Returns list of all metric column names for the row selector
Object	getMetricObjectValue(int rowOffset, int aggOffset)
List<OrderBy>	getOrdering()	Ordering for the data in the facts table
int	getTimePosition()	Position of the time column in IncrementalIndexRowSelector.getOrdering()
boolean	isEmpty()	Are there any IncrementalIndexRow stored in the FactsHolder?
boolean	isNull(int rowOffset, int aggOffset)
int	numRows()	Number of rows in FactsHolder
AggregateProjectionMetadata	toMetadata()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.segment.ColumnInspector

getType

Methods inherited from interface org.apache.druid.math.expr.Expr.InputBindingInspector

areNumeric, areNumeric, areSameTypes, areSameTypes, areScalar, areScalar, canVectorize, canVectorize

Constructor Detail

OnHeapAggregateProjection

public OnHeapAggregateProjection(AggregateProjectionMetadata.Schema schema,
                                 List<IncrementalIndex.DimensionDesc> dimensions,
                                 Map<String,IncrementalIndex.DimensionDesc> dimensionsMap,
                                 int[] parentDimensionIndex,
                                 long minTimestamp,
                                 boolean useMaxMemoryEstimates,
                                 long maxBytesPerRowForAggregators)

Method Detail

addToFacts

public void addToFacts(IncrementalIndexRow key,
                       InputRow inputRow,
                       List<String> parseExceptionMessages,
                       AtomicLong totalSizeInBytes)

Add row to projection factsHolder, updating totalSizeInBytes estimate

getFacts

public FactsHolder getFacts()

Description copied from interface: IncrementalIndexRowSelector

Get the FactsHolder containing all of the IncrementalIndexRow backing this selector

Specified by:

getFacts in interface IncrementalIndexRowSelector

getDimensions

public List<IncrementalIndex.DimensionDesc> getDimensions()

Description copied from interface: IncrementalIndexRowSelector

Returns list of IncrementalIndex.DimensionDesc for the row selector

Specified by:

getDimensions in interface IncrementalIndexRowSelector

getMetricNames

public List<String> getMetricNames()

Description copied from interface: IncrementalIndexRowSelector

Returns list of all metric column names for the row selector

Specified by:

getMetricNames in interface IncrementalIndexRowSelector

getDimension

public IncrementalIndex.DimensionDesc getDimension(String columnName)

Description copied from interface: IncrementalIndexRowSelector

get IncrementalIndex.DimensionDesc for the specified column, if available, which provides access to things like DimensionIndexer and DimensionHandler as well as column capabilities and position within the row

Specified by:

getDimension in interface IncrementalIndexRowSelector

getMetric

public IncrementalIndex.MetricDesc getMetric(String columnName)

Description copied from interface: IncrementalIndexRowSelector

Get IncrementalIndex.MetricDesc which provides column capabilities and position in the aggregators section of the row

Specified by:

getMetric in interface IncrementalIndexRowSelector

getOrdering

public List<OrderBy> getOrdering()

Description copied from interface: IncrementalIndexRowSelector

Ordering for the data in the facts table

Specified by:

getOrdering in interface IncrementalIndexRowSelector

getTimePosition

public int getTimePosition()

Description copied from interface: IncrementalIndexRowSelector

Position of the time column in IncrementalIndexRowSelector.getOrdering()

Specified by:

getTimePosition in interface IncrementalIndexRowSelector

isEmpty

public boolean isEmpty()

Description copied from interface: IncrementalIndexRowSelector

Are there any IncrementalIndexRow stored in the FactsHolder?

Specified by:

isEmpty in interface IncrementalIndexRowSelector

getLastRowIndex

public int getLastRowIndex()

Description copied from interface: IncrementalIndexRowSelector

Highest value IncrementalIndexRow.getRowIndex() available in this selector. Note that these values do not reflect the position of the row in the FactsHolder, rather just the order in which they were processed

Specified by:

getLastRowIndex in interface IncrementalIndexRowSelector

getMetricFloatValue

public float getMetricFloatValue(int rowOffset,
                                 int aggOffset)

Specified by:

getMetricFloatValue in interface IncrementalIndexRowSelector

Parameters:

rowOffset - row to get float aggregator value

aggOffset - position of the aggregator in the aggregators array of the data schema

Returns:

float value of the metric

getMetricLongValue

public long getMetricLongValue(int rowOffset,
                               int aggOffset)

Specified by:

getMetricLongValue in interface IncrementalIndexRowSelector

Parameters:

rowOffset - row to get long aggregator value

aggOffset - position of the aggregator in the aggregators array of the data schema

Returns:

long value of the aggregator for this row

getMetricDoubleValue

public double getMetricDoubleValue(int rowOffset,
                                   int aggOffset)

Specified by:

getMetricDoubleValue in interface IncrementalIndexRowSelector

Parameters:

rowOffset - row to get double aggregator value

aggOffset - position of the aggregator in the aggregators array of the data schema

Returns:

double value of the aggregator for this row

getMetricObjectValue

@Nullable
public Object getMetricObjectValue(int rowOffset,
                                   int aggOffset)

Specified by:

getMetricObjectValue in interface IncrementalIndexRowSelector

Parameters:

rowOffset - row to get long aggregator value

aggOffset - position of the aggregator in the aggregators array of the data schema

Returns:

long value of the aggregator for this row

isNull

public boolean isNull(int rowOffset,
                      int aggOffset)

Specified by:

isNull in interface IncrementalIndexRowSelector

Parameters:

rowOffset - row to check for a aggregator value

aggOffset - position of the aggregator in the aggregators array of the data schema

Returns:

is the value null for this row?

getColumnFormat

public ColumnFormat getColumnFormat(String columnName)

Description copied from interface: IncrementalIndexRowSelector

Get ColumnFormat for a dimension, metrics, or time column, or null if the column does not exist

Specified by:

getColumnFormat in interface IncrementalIndexRowSelector

numRows

public int numRows()

Description copied from interface: IncrementalIndexRowSelector

Number of rows in FactsHolder

Specified by:

numRows in interface IncrementalIndexRowSelector

getDimensionNames

public List<String> getDimensionNames(boolean includeTime)

Description copied from interface: IncrementalIndexRowSelector

Returns list of dimension names for the row selector, optionally including the time column. If time is included, the order columns appear in this list will match IncrementalIndexRowSelector.getOrdering()

Specified by:

getDimensionNames in interface IncrementalIndexRowSelector

getColumnCapabilities

@Nullable
public ColumnCapabilities getColumnCapabilities(String column)

Description copied from interface: ColumnInspector

Returns capabilities of a particular column.

Specified by:

getColumnCapabilities in interface ColumnInspector

Parameters:

column - column name

Returns:

capabilities, or null

getDimensionsMap

public Map<String,IncrementalIndex.DimensionDesc> getDimensionsMap()

toMetadata

public AggregateProjectionMetadata toMetadata()