org.springframework.data.mongodb.core.aggregation

Class AccumulatorOperators.StdDevPop

java.lang.Object

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

All Implemented Interfaces:

AggregationExpression

Enclosing class:

AccumulatorOperators

public static class AccumulatorOperators.StdDevPop
extends Object

AggregationExpression for $stdDevPop.

Author:

Christoph Strobl

Method Summary

Modifier and Type	Method and Description
AccumulatorOperators.StdDevPop	and(AggregationExpression expression) Creates new AccumulatorOperators.StdDevSamp with all previously added arguments appending the given one.
AccumulatorOperators.StdDevPop	and(String fieldReference) Creates new AccumulatorOperators.StdDevPop with all previously added arguments appending the given one.
protected List<Object>	append(Object value)
protected Map<String,Object>	append(String key, Object value)
protected Map<String,Object>	argumentMap() Get the argument map.
protected static List<Field>	asFields(String... fieldRefs)
protected boolean	contains(Object key) Check if the given key is available.
protected <T> T	get(int index) Get the value at a given index.
protected <T> T	get(Object key) Get the value for a given key.
protected String	getMongoMethod()
static AccumulatorOperators.StdDevPop	stdDevPopOf(AggregationExpression expression) Creates new AccumulatorOperators.StdDevPop with all previously added arguments appending the given one.
static AccumulatorOperators.StdDevPop	stdDevPopOf(String fieldReference) Creates new AccumulatorOperators.StdDevPop.
org.bson.Document	toDocument(AggregationOperationContext context) Turns the AggregationExpression into a Document within the given AggregationOperationContext.
org.bson.Document	toDocument(Object value, AggregationOperationContext context)
protected List<Object>	values()

Methods inherited from class java.lang.Object

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

Method Detail

getMongoMethod

protected String getMongoMethod()

stdDevPopOf

public static AccumulatorOperators.StdDevPop stdDevPopOf(String fieldReference)

Creates new AccumulatorOperators.StdDevPop.

Parameters:

fieldReference - must not be null.

Returns:

stdDevPopOf

public static AccumulatorOperators.StdDevPop stdDevPopOf(AggregationExpression expression)

Creates new AccumulatorOperators.StdDevPop with all previously added arguments appending the given one.

Parameters:

expression - must not be null.

Returns:

and

public AccumulatorOperators.StdDevPop and(String fieldReference)

Creates new AccumulatorOperators.StdDevPop with all previously added arguments appending the given one.
NOTE: Only possible in $project stage.

Parameters:

fieldReference - must not be null.

Returns:

and

public AccumulatorOperators.StdDevPop and(AggregationExpression expression)

Creates new AccumulatorOperators.StdDevSamp with all previously added arguments appending the given one.
NOTE: Only possible in $project stage.

Parameters:

expression - must not be null.

Returns:

toDocument

public org.bson.Document toDocument(Object value,
                                    AggregationOperationContext context)

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

Returns:

asFields

protected static List<Field> asFields(String... fieldRefs)

append

protected List<Object> append(Object value)

append

protected Map<String,Object> append(String key,
                                    Object value)

values

protected List<Object> values()

get

protected <T> T get(int index)

Get the value at a given index.

Type Parameters:

T -

Parameters:

index -

Returns:

Since:

2.1

get

protected <T> T get(Object key)

Get the value for a given key.

Type Parameters:

T -

Parameters:

key -

Returns:

Since:

2.1

argumentMap

protected Map<String,Object> argumentMap()

Get the argument map.

Returns:

Since:

2.1

contains

protected boolean contains(Object key)

Check if the given key is available.

Parameters:

key -

Returns:

Since:

2.1