com.yahoo.bard.webservice.data.config.metric.makers

Class CardinalityMaker

java.lang.Object

com.yahoo.bard.webservice.data.config.metric.makers.MetricMaker

com.yahoo.bard.webservice.data.config.metric.makers.CardinalityMaker

public class CardinalityMaker
extends MetricMaker

Metric Maker to calculate the cardinality.

Field Summary

Fields inherited from class com.yahoo.bard.webservice.data.config.metric.makers.MetricMaker

metrics, NO_OP_MAP_PROVIDER, NO_OP_MAPPER

Constructor Summary

Constructors

Constructor and Description
CardinalityMaker(MetricDictionary metrics, DimensionDictionary dimensionDictionary, boolean byRow) Constructor.

Method Summary

Modifier and Type	Method and Description
protected void	assertDependentMetricsExist(List<String> dependentDimensions) Cardinality metrics depend on dimensions not metrics.
protected int	getDependentMetricsRequired() Get the number of dependent metrics the maker requires for making the metric.
protected LogicalMetric	makeInner(LogicalMetricInfo logicalMetricInfo, List<String> dependentDimensions) Delegated to for actually making the metric.

Methods inherited from class com.yahoo.bard.webservice.data.config.metric.makers.MetricMaker

assertRequiredDependentMetricCount, getDependentQuery, getMergedQuery, getNumericField, getNumericField, getSketchField, getSketchField, make, make, make, makeInner

Methods inherited from class java.lang.Object

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

Constructor Detail

CardinalityMaker

public CardinalityMaker(MetricDictionary metrics,
                        DimensionDictionary dimensionDictionary,
                        boolean byRow)

Constructor.

Parameters:

metrics - Unused reference to metrics dictionary

dimensionDictionary - Dictionary to resolve dimension api names against

byRow - Cardinality by value or row

Method Detail

assertDependentMetricsExist

protected void assertDependentMetricsExist(List<String> dependentDimensions)

Cardinality metrics depend on dimensions not metrics.

Overrides:

assertDependentMetricsExist in class MetricMaker

Parameters:

dependentDimensions - The dimension names for this cardinality metric

makeInner

protected LogicalMetric makeInner(LogicalMetricInfo logicalMetricInfo,
                                  List<String> dependentDimensions)

Description copied from class: MetricMaker

Delegated to for actually making the metric.

Overrides:

makeInner in class MetricMaker

Parameters:

logicalMetricInfo - Logical metric info provider

dependentDimensions - Metrics this metric depends on

Returns:

the new logicalMetric

getDependentMetricsRequired

protected int getDependentMetricsRequired()

Description copied from class: MetricMaker

Get the number of dependent metrics the maker requires for making the metric.

Specified by:

getDependentMetricsRequired in class MetricMaker

Returns:

the number of dependent metrics the maker requires for making the metric