Package io.activej.aggregation.measure

Class MeasureCount

java.lang.Object

io.activej.aggregation.measure.Measure

io.activej.aggregation.measure.MeasureCount

public final class MeasureCount
extends Measure

Field Summary

Fields inherited from class io.activej.aggregation.measure.Measure

fieldType

Method Summary

Modifier and Type	Method	Description
Expression	accumulate(Variable accumulator, Variable nextValue)
Expression	initAccumulatorWithAccumulator(Variable accumulator, Expression firstAccumulator)
Expression	initAccumulatorWithValue(Variable accumulator, Variable firstValue)
Expression	reduce(Variable accumulator, Variable nextAccumulator)
Expression	valueOfAccumulator(Expression accumulator)
Expression	zeroAccumulator(Variable accumulator)

Methods inherited from class io.activej.aggregation.measure.Measure

getFieldType

Methods inherited from class java.lang.Object

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

Method Details

valueOfAccumulator

public Expression valueOfAccumulator(Expression accumulator)

Specified by:

valueOfAccumulator in class Measure

zeroAccumulator

public Expression zeroAccumulator(Variable accumulator)

Specified by:

zeroAccumulator in class Measure

initAccumulatorWithAccumulator

public Expression initAccumulatorWithAccumulator(Variable accumulator,
 Expression firstAccumulator)

Specified by:

initAccumulatorWithAccumulator in class Measure

reduce

public Expression reduce(Variable accumulator,
 Variable nextAccumulator)

Specified by:

reduce in class Measure

initAccumulatorWithValue

public Expression initAccumulatorWithValue(Variable accumulator,
 Variable firstValue)

Specified by:

initAccumulatorWithValue in class Measure

accumulate

public Expression accumulate(Variable accumulator,
 Variable nextValue)

Specified by:

accumulate in class Measure