org.springframework.data.mongodb.core.aggregation

Class BucketOperationSupport.OutputBuilder<B extends BucketOperationSupport.OutputBuilder<B,T>,T extends BucketOperationSupport<T,B>>

java.lang.Object

org.springframework.data.mongodb.core.aggregation.BucketOperationSupport.OutputBuilder<B,T>

Direct Known Subclasses:

BucketAutoOperation.BucketAutoOperationOutputBuilder, BucketOperation.BucketOperationOutputBuilder, BucketOperationSupport.ExpressionBucketOperationBuilderSupport

Enclosing class:

BucketOperationSupport<T extends BucketOperationSupport<T,B>,B extends BucketOperationSupport.OutputBuilder<B,T>>

public abstract static class BucketOperationSupport.OutputBuilder<B extends BucketOperationSupport.OutputBuilder<B,T>,T extends BucketOperationSupport<T,B>>
extends Object

Base class for BucketOperationSupport.Output builders that result in a BucketOperationSupport providing the built BucketOperationSupport.Output.

Author:

Mark Paluch

Field Summary

Fields

Modifier and Type	Field and Description
protected T	operation
protected Object	value

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	OutputBuilder(Object value, T operation) Creates a new BucketOperationSupport.OutputBuilder for the given value and BucketOperationSupport.

Method Summary

Modifier and Type	Method and Description
B	addToSet() Generates a builder for an $addToSet-expression for the current value.
protected abstract B	apply(BucketOperationSupport.OperationOutput operationOutput) Apply an BucketOperationSupport.OperationOutput to this output.
B	apply(String operation, Object... values) Apply an operator to the current value.
T	as(String alias) Returns the finally to be applied BucketOperation with the given alias.
B	avg() Generates a builder for an $avg-expression for the current value.
B	count() Generates a builder for a $sum-expression.
B	first() Generates a builder for a $first-expression the current value.
B	last() Generates a builder for an $last-expression for the current value..
B	max() Generates a builder for an $max-expression for the current value.
B	min() Generates a builder for an $min-expression for the current value.
B	push() Generates a builder for an $push-expression for the current value.
B	sum() Generates a builder for a $sum-expression for the current value.
B	sum(Number value) Generates a builder for a $sum-expression for the given value.

Methods inherited from class java.lang.Object

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

Field Detail

value

protected final Object value

operation

protected final T extends BucketOperationSupport<T,B> operation

Constructor Detail

OutputBuilder

protected OutputBuilder(Object value,
                        T operation)

Creates a new BucketOperationSupport.OutputBuilder for the given value and BucketOperationSupport.

Parameters:

value - must not be null.

operation - must not be null.

Method Detail

count

public B count()

Generates a builder for a $sum-expression.
Count expressions are emulated via $sum: 1.

Returns:

sum

public B sum()

Generates a builder for a $sum-expression for the current value.

Returns:

sum

public B sum(Number value)

Generates a builder for a $sum-expression for the given value.

Parameters:

value -

Returns:

last

public B last()

Generates a builder for an $last-expression for the current value..

Returns:

first

public B first()

Generates a builder for a $first-expression the current value.

Returns:

avg

public B avg()

Generates a builder for an $avg-expression for the current value.

Parameters:

reference -

Returns:

min

public B min()

Generates a builder for an $min-expression for the current value.

Returns:

max

public B max()

Generates a builder for an $max-expression for the current value.

Returns:

push

public B push()

Generates a builder for an $push-expression for the current value.

Returns:

addToSet

public B addToSet()

Generates a builder for an $addToSet-expression for the current value.

Returns:

apply

public B apply(String operation,
               Object... values)

Apply an operator to the current value.

Parameters:

operation - the operation name, must not be null or empty.

values - must not be null.

Returns:

apply

protected abstract B apply(BucketOperationSupport.OperationOutput operationOutput)

Apply an BucketOperationSupport.OperationOutput to this output.

Parameters:

operationOutput - must not be null.

Returns:

as

public T as(String alias)

Returns the finally to be applied BucketOperation with the given alias.

Parameters:

alias - will never be null or empty.

Returns: