Module spring.data.mongodb

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

Class ConditionalOperators.Cond

java.lang.Object

org.springframework.data.mongodb.core.aggregation.ConditionalOperators.Cond

All Implemented Interfaces:

AggregationExpression, MongoExpression

Enclosing class:

ConditionalOperators

public static class ConditionalOperators.Cond
extends Object
implements AggregationExpression

Encapsulates the aggregation framework $cond operator. A ConditionalOperators.Cond allows nested conditions if-then[if-then-else]-else using Field, CriteriaDefinition, AggregationExpression or a custom condition. Replacement values can be either field references, expressions, values of simple MongoDB types or values that can be converted to a simple MongoDB type.

Author:

Mark Paluch, Christoph Strobl

See Also:

• https://docs.mongodb.com/manual/reference/operator/aggregation/cond/

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ConditionalOperators.Cond.OtherwiseBuilder
static interface	ConditionalOperators.Cond.ThenBuilder
static interface	ConditionalOperators.Cond.WhenBuilder

Method Summary

Modifier and Type	Method	Description
static ConditionalOperators.Cond.WhenBuilder	newBuilder()	Get a builder that allows fluent creation of ConditionalOperators.Cond.
org.bson.Document	toDocument(AggregationOperationContext context)	Turns the AggregationExpression into a Document within the given AggregationOperationContext.
static ConditionalOperators.Cond.ThenBuilder	when(String booleanField)	Start creating new ConditionalOperators.Cond by providing the field reference used in if.
static ConditionalOperators.Cond.ThenBuilder	when(org.bson.Document booleanExpression)	Start creating new ConditionalOperators.Cond by providing the boolean expression used in if.
static ConditionalOperators.Cond.ThenBuilder	when(AggregationExpression expression)	Start creating new ConditionalOperators.Cond by providing the AggregationExpression used in if.
static ConditionalOperators.Cond.ThenBuilder	when(CriteriaDefinition criteria)	Start creating new ConditionalOperators.Cond by providing the CriteriaDefinition used in if.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.data.mongodb.core.aggregation.AggregationExpression

toDocument

Method Details

toDocument

public org.bson.Document toDocument(AggregationOperationContext context)

Description copied from interface: AggregationExpression

Turns the AggregationExpression into a Document within the given AggregationOperationContext.

Specified by:

toDocument in interface AggregationExpression

Parameters:

context - must not be null.

Returns:

the MongoDB native (Document) form of the expression.

newBuilder

public static ConditionalOperators.Cond.WhenBuilder newBuilder()

Get a builder that allows fluent creation of ConditionalOperators.Cond.

Returns:

never null.

when

public static ConditionalOperators.Cond.ThenBuilder when(org.bson.Document booleanExpression)

Start creating new ConditionalOperators.Cond by providing the boolean expression used in if.

Parameters:

booleanExpression - must not be null.

Returns:

never null.

when

public static ConditionalOperators.Cond.ThenBuilder when(AggregationExpression expression)

Start creating new ConditionalOperators.Cond by providing the AggregationExpression used in if.

Parameters:

expression - expression that yields in a boolean result, must not be null.

Returns:

never null.

when

public static ConditionalOperators.Cond.ThenBuilder when(String booleanField)

Start creating new ConditionalOperators.Cond by providing the field reference used in if.

Parameters:

booleanField - name of a field holding a boolean value, must not be null.

Returns:

never null.

when

public static ConditionalOperators.Cond.ThenBuilder when(CriteriaDefinition criteria)

Start creating new ConditionalOperators.Cond by providing the CriteriaDefinition used in if.

Parameters:

criteria - criteria to evaluate, must not be null.

Returns:

the ConditionalOperators.Cond.ThenBuilder