apollo-api/com.apollographql.apollo3.api/ExecutionContext

ExecutionContext

interface ExecutionContext

A context of GraphQL operation execution, represented as a set of Key keys and corresponding Element values.

It is inspired by the coroutines Context and allows to pass arbitrary data to interceptors.

Types

Companion

object Companion

Element

interface Element : ExecutionContext

An element of the ExecutionContext. An element of the execution context is a singleton context by itself.

Key

interface Key<E : ExecutionContext.Element>

Key for the elements of ExecutionContext. E is a type of element with this key.

Functions

fold

abstract fun <R> fold(initial: R, operation: (R, ExecutionContext.Element) -> R): R

Accumulates entries of this context starting with initial value and applying operation from left to right to current accumulator value and each element of this context.

get

abstract operator fun <E : ExecutionContext.Element> get(key: ExecutionContext.Key<E>): E?

Returns the element with the given key from this context or null.

minusKey

abstract fun minusKey(key: ExecutionContext.Key<*>): ExecutionContext

Returns a context containing elements from this context, but without an element with the specified key.

plus

open operator fun plus(context: ExecutionContext): ExecutionContext

Returns a context containing elements from this context and elements from other context. The elements from this context with the same key as in the other one are dropped.

Inheritors

Element