MongoDB request DSL • opensavvy.ktmongo.dsl.aggregation.accumulators • ArithmeticValueAccumulators

ArithmeticValueAccumulators

interface ArithmeticValueAccumulators<From : Any, Into : Any> : ValueAccumulators<From, Into> 

Accumulators to perform arithmetic operations.

To learn more about accumulation operators, see AccumulationOperators.

Inheritors

• AccumulationOperators

Properties

context

abstract val context: 

field

open val <Root, Type> KProperty1<Root, Type>.field: Field<Root, Type>

Converts a Kotlin property into a Field.

Functions

accept

abstract override fun accept(node: BsonNode)

Adds a new node as a child of this one.

acceptAll

fun <N : Node> CompoundNode<N>.acceptAll(nodes: Iterable<N>)

Adds any number of nodes into this one.

div

open operator fun <Context : Any, Root, Child> Value<Context, Root>.div(field: KProperty1<Root, Child>): Value<Context, Child>

Refers to field as a nested field of the current value.

open operator fun <Context : Any, Root, Child> Value<Context, Root>.div(field: Field<Root, Child>): Value<Context, Child>

Refers to field as a nested field of the current value.

open operator fun <Root, Parent, Child> KProperty1<Root, Parent>.div(child: KProperty1<Parent & Any, Child>): Field<Root, Child>

Refers to child as a nested field of the current field.

freeze

abstract override fun freeze()

Makes this expression immutable.

get

open operator fun <Root, Type> KProperty1<Root, Collection<Type>>.get(index: Int): Field<Root, Type>

Refers to a specific item in an array, by its index.

open operator fun <Root, Type> KProperty1<Root, Map<String, Type>>.get(index: String): Field<Root, Type>

Refers to a specific item in a map, by its name.

of

open fun <Result> of(value: Result): Value<Any, Result>

Refers to a Kotlin value within an aggregation value.

open fun of(value: ): Value<Any, >

Refers to a BsonType within an aggregation value.

open fun <Context : Any, Result> of(field: KProperty1<Context, Result>): Value<Context, Result>

Refers to a field within an aggregation value.

open fun <Context : Any, Result> of(field: Field<Context, Result>): Value<Context, Result>

Refers to a field within an aggregation value.

simplify

abstract fun simplify(): BsonNode?

Returns a simplified (but equivalent) expression to the current expression.

sum

open infix fun <T : Number> KProperty1<Into, T>.sum(value: Value<From, Number>)

Calculates and returns the collective sum of numeric values. Non-numeric values are ignored.

open infix fun <T : Number> Field<Into, T>.sum(value: Value<From, Number>)

Calculates and returns the collective sum of numeric values. Non-numeric values are ignored.

toBson

open fun toBson(): 

Writes the result of simplifying to a new Bson.

writeTo

abstract fun writeTo(writer: )

Writes the result of simplifying this expression into writer.