org.springframework.data.mongodb.core.aggregation

Class ArrayOperators.Reduce

java.lang.Object

org.springframework.data.mongodb.core.aggregation.ArrayOperators.Reduce

All Implemented Interfaces:

AggregationExpression

Enclosing class:

ArrayOperators

public static class ArrayOperators.Reduce
extends Object
implements AggregationExpression

AggregationExpression for $reduce.

Author:

Christoph Strobl

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ArrayOperators.Reduce.InitialValueBuilder
static class	ArrayOperators.Reduce.PropertyExpression
static interface	ArrayOperators.Reduce.ReduceBuilder
static class	ArrayOperators.Reduce.Variable

Method Summary

Modifier and Type	Method and Description
static ArrayOperators.Reduce.InitialValueBuilder	arrayOf(AggregationExpression arrayValueExpression) Start creating new ArrayOperators.Reduce.
static ArrayOperators.Reduce.InitialValueBuilder	arrayOf(String fieldReference) Start creating new ArrayOperators.Reduce.
com.mongodb.DBObject	toDbObject(AggregationOperationContext context) Turns the AggregationExpression into a DBObject within the given AggregationOperationContext.

Methods inherited from class java.lang.Object

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

Method Detail

toDbObject

public com.mongodb.DBObject toDbObject(AggregationOperationContext context)

Description copied from interface: AggregationExpression

Turns the AggregationExpression into a DBObject within the given AggregationOperationContext.

Specified by:

toDbObject in interface AggregationExpression

Returns:

arrayOf

public static ArrayOperators.Reduce.InitialValueBuilder arrayOf(String fieldReference)

Start creating new ArrayOperators.Reduce.

Parameters:

fieldReference - must not be null.

Returns:

arrayOf

public static ArrayOperators.Reduce.InitialValueBuilder arrayOf(AggregationExpression arrayValueExpression)

Start creating new ArrayOperators.Reduce.

Parameters:

arrayValueExpression - must not be null.

Returns: