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

Class ConstantMaker

java.lang.Object

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

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

public class ConstantMaker
extends MetricMaker

Metric maker to create a constant value in the post aggregations.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	LOG

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
ConstantMaker(MetricDictionary metricDictionary) Constructor.

Method Summary

Modifier and Type	Method and Description
protected int	getDependentMetricsRequired() Get the number of dependent metrics the maker requires for making the metric.
LogicalMetric	make(LogicalMetricInfo logicalMetricInfo, List<String> dependentMetrics) Make the metric.
protected LogicalMetric	makeInner(LogicalMetricInfo logicalMetricInfo, List<String> dependentMetrics) Delegated to for actually making the metric.

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

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

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final org.slf4j.Logger LOG

Constructor Detail

ConstantMaker

public ConstantMaker(MetricDictionary metricDictionary)

Constructor.

Parameters:

metricDictionary - Dictionary from which to look up dependent metrics

Method Detail

make

public LogicalMetric make(LogicalMetricInfo logicalMetricInfo,
                          List<String> dependentMetrics)

Description copied from class: MetricMaker

Make the metric.

This method also sanity-checks the dependent metrics to make sure that they are metrics we have built and are in the metric dictionary.

Also sanity-checks that the number of dependent metrics are correct for the maker.

Overrides:

make in class MetricMaker

Parameters:

logicalMetricInfo - Logical metric info provider

dependentMetrics - Metrics this metric depends on

Returns:

The new logicalMetric

makeInner

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

Description copied from class: MetricMaker

Delegated to for actually making the metric.

Overrides:

makeInner in class MetricMaker

Parameters:

logicalMetricInfo - Logical metric info provider

dependentMetrics - 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