Package dev.morphia.aggregation

Class Accumulator

java.lang.Object

dev.morphia.aggregation.Accumulator

public class Accumulator
extends Object

Defines an accumulator for use in an aggregation pipeline.

Constructor Summary

Constructors

Constructor	Description
Accumulator(String operation, Object field)	Defines an accumulator for use in an aggregation pipeline.
Accumulator(String operation, String field)	Defines an accumulator for use in an aggregation pipeline.

Method Summary

Modifier and Type	Method	Description
static Accumulator	accumulator(String operation, Object field)	Defines an accumulator for use in an aggregation pipeline.
static Accumulator	accumulator(String operation, String field)	Defines an accumulator for use in an aggregation pipeline.
String	getOperation()
Object	getValue()
Document	toDocument()

Methods inherited from class java.lang.Object

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

Constructor Detail

Accumulator

public Accumulator(String operation,
                   String field)

Defines an accumulator for use in an aggregation pipeline.

Parameters:

operation - the accumulator operation

field - the field to use

Accumulator

public Accumulator(String operation,
                   Object field)

Defines an accumulator for use in an aggregation pipeline.

Parameters:

operation - the accumulator operation

field - the field to use

Method Detail

accumulator

public static Accumulator accumulator(String operation,
                                      String field)

Defines an accumulator for use in an aggregation pipeline.

Parameters:

operation - the accumulator operation

field - the field to use

Returns:

an Accumulator

accumulator

public static Accumulator accumulator(String operation,
                                      Object field)

Defines an accumulator for use in an aggregation pipeline.

Parameters:

operation - the accumulator operation

field - the field to use

Returns:

an Accumulator

getOperation

public String getOperation()

Returns:

the operation for this accumulator

getValue

public Object getValue()

Returns:

the value for this accumulator

toDocument

public Document toDocument()