Package org.springframework.data.mongodb.core.aggregation

Class AccumulatorOperators

java.lang.Object

org.springframework.data.mongodb.core.aggregation.AccumulatorOperators

public class AccumulatorOperators
extends Object

Gateway to accumulator aggregation operations.

Since:

1.10

Author:

Christoph Strobl, Julia Lee

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AccumulatorOperators.AccumulatorOperatorFactory
static class	AccumulatorOperators.Avg	AggregationExpression for $avg.
static class	AccumulatorOperators.CovariancePop	AggregationExpression for $covariancePop.
static class	AccumulatorOperators.CovarianceSamp	AggregationExpression for $covarianceSamp.
static class	AccumulatorOperators.ExpMovingAvg	AccumulatorOperators.ExpMovingAvg calculates the exponential moving average of numeric values.
static interface	AccumulatorOperators.ExpMovingAvgBuilder	Builder for AccumulatorOperators.ExpMovingAvg.
static class	AccumulatorOperators.Max	AggregationExpression for $max.
static class	AccumulatorOperators.Median	AggregationExpression for $median.
static class	AccumulatorOperators.Min	AggregationExpression for $min.
static class	AccumulatorOperators.Percentile	AggregationExpression for $percentile.
static class	AccumulatorOperators.StdDevPop	AggregationExpression for $stdDevPop.
static class	AccumulatorOperators.StdDevSamp	AggregationExpression for $stdDevSamp.
static class	AccumulatorOperators.Sum	AggregationExpression for $sum.

Constructor Summary

Constructors

Constructor	Description
AccumulatorOperators()

Method Summary

Modifier and Type	Method	Description
static AccumulatorOperators.AccumulatorOperatorFactory	valueOf(String fieldReference)	Take the numeric value referenced by given fieldReference.
static AccumulatorOperators.AccumulatorOperatorFactory	valueOf(AggregationExpression expression)	Take the numeric value referenced resulting from given AggregationExpression.

Methods inherited from class java.lang.Object

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

Constructor Details

AccumulatorOperators

public AccumulatorOperators()

Method Details

valueOf

public static AccumulatorOperators.AccumulatorOperatorFactory valueOf(String fieldReference)

Take the numeric value referenced by given fieldReference.

Parameters:

fieldReference - must not be null.

Returns:

new instance of AccumulatorOperators.AccumulatorOperatorFactory.

valueOf

public static AccumulatorOperators.AccumulatorOperatorFactory valueOf(AggregationExpression expression)

Take the numeric value referenced resulting from given AggregationExpression.

Parameters:

expression - must not be null.

Returns:

new instance of AccumulatorOperators.AccumulatorOperatorFactory.