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

Class EvaluationOperators

java.lang.Object

org.springframework.data.mongodb.core.aggregation.EvaluationOperators

public class EvaluationOperators
extends Object

Gateway to evaluation operators such as $expr.

Since:

3.3

Author:

Divya Srivastava, Christoph Strobl

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EvaluationOperators.EvaluationOperatorFactory
static class	EvaluationOperators.Expr	Allows the use of aggregation expressions within the query language.
static class	EvaluationOperators.LastObservationCarriedForward	Sets null and missing values to the last non-null value.

Constructor Summary

Constructors

Constructor	Description
EvaluationOperators()

Method Summary

Modifier and Type	Method	Description
static EvaluationOperators.EvaluationOperatorFactory	valueOf(String fieldReference)	Take the value resulting from the given fieldReference.
static EvaluationOperators.EvaluationOperatorFactory	valueOf(AggregationExpression expression)	Take the value resulting from the given AggregationExpression.

Methods inherited from class java.lang.Object

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

Constructor Details

EvaluationOperators

public EvaluationOperators()

Method Details

valueOf

public static EvaluationOperators.EvaluationOperatorFactory valueOf(String fieldReference)

Take the value resulting from the given fieldReference.

Parameters:

fieldReference - must not be null.

Returns:

new instance of EvaluationOperators.EvaluationOperatorFactory.

valueOf

public static EvaluationOperators.EvaluationOperatorFactory valueOf(AggregationExpression expression)

Take the value resulting from the given AggregationExpression.

Parameters:

expression - must not be null.

Returns:

new instance of EvaluationOperators.EvaluationOperatorFactory.