Package com.influxdb.query.dsl.functions

Class CountFlux

java.lang.Object

com.influxdb.query.dsl.Flux

com.influxdb.query.dsl.functions.AbstractParametrizedFlux

com.influxdb.query.dsl.functions.CountFlux

All Implemented Interfaces:

Expression, HasImports

public final class CountFlux
extends AbstractParametrizedFlux

Counts the number of results. See SPEC.

Options

• column - The column to aggregate [string]. Default to _value.

Example

 Flux flux = Flux
      .from("telegraf")
      .count();
 

Author:

Jakub Bednar (bednar@github) (22/06/2018 11:06)

Field Summary

Fields inherited from class com.influxdb.query.dsl.Flux

functionsParameters, imports

Constructor Summary

Constructors

Constructor	Description
CountFlux(Flux source)

Method Summary

Modifier and Type	Method	Description
void	collectImports(Set<String> collectedImports)	Collects all imports of the flux.
protected String	operatorName()
CountFlux	withColumn(String column)

Methods inherited from class com.influxdb.query.dsl.functions.AbstractParametrizedFlux

appendActual, beforeAppendOperatorName

Methods inherited from class com.influxdb.query.dsl.Flux

addImport, aggregateWindow, aggregateWindow, arrayFrom, arrayFrom, asVariable, columns, columns, count, count, covariance, covariance, covariance, covariance, covariance, covariance, covariance, covariance, covariance, cumulativeSum, cumulativeSum, cumulativeSum, derivative, derivative, difference, difference, difference, difference, difference, difference, distinct, distinct, drop, drop, drop, drop, duplicate, duplicate, expression, fill, fill, filter, filter, first, from, from, from, function, getImports, group, groupBy, groupBy, groupBy, groupExcept, groupExcept, groupExcept, integral, integral, interpolateLinear, interpolateLinear, join, join, keep, keep, keep, keep, last, last, limit, limit, limit, map, map, max, max, mean, mean, min, min, pivot, pivot, pivot, quantile, quantile, quantile, quantile, quantile, range, range, range, range, range, range, range, reduce, reduce, rename, rename, rename, sample, sample, sample, set, set, skew, skew, sort, sort, sort, sort, sort, sort, spread, spread, stddev, stddev, sum, sum, tail, tail, tail, timeShift, timeShift, timeShift, timeShift, to, to, to, to, to, to, to, to, toBool, toDuration, toFloat, toInt, toString, toString, toString, toStringConvert, toTime, toUInt, truncateTimeColumn, union, window, window, window, window, window, window, window, withFunction, withFunctionNamed, withPipedFunction, withPropertyNamed, withPropertyNamed, withPropertyValue, withPropertyValue, withPropertyValueEscaped, yield, yield

Methods inherited from class java.lang.Object

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

Constructor Details

CountFlux

public CountFlux(@Nonnull
 Flux source)

Method Details

operatorName

@Nonnull
protected String operatorName()

Specified by:

operatorName in class AbstractParametrizedFlux

Returns:

name of function

withColumn

@Nonnull
public CountFlux withColumn(@Nonnull
 String column)

Parameters:

column - The column to aggregate.

Returns:

this

collectImports

public void collectImports(@Nonnull
 Set<String> collectedImports)

Description copied from class: Flux

Collects all imports of the flux.

Overrides:

collectImports in class Flux

Parameters:

collectedImports - a set to be filled by the used imports