kibana/docs/development/plugins/expressions/server/kibana-plugin-plugins-expressions-server.execution.md

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Execution class

Signature:

export declare class Execution<Input = unknown, Output = unknown, InspectorAdapters extends Adapters = ExpressionExecutionParams['inspectorAdapters'] extends object ? ExpressionExecutionParams['inspectorAdapters'] : DefaultInspectorAdapters> 

Constructors

Constructor	Modifiers	Description
(constructor)(execution)		Constructs a new instance of the Execution class

Properties

Property	Modifiers	Type	Description
context		ExecutionContext<InspectorAdapters>	Execution context - object that allows to do side-effects. Context is passed to every function.
contract		ExecutionContract<Input, Output, InspectorAdapters>	Contract is a public representation of Execution instances. Contract we can return to other plugins for their consumption.
execution		ExecutionParams
expression		string
input		Input	Initial input of the execution.N.B. It is initialized to null rather than undefined for legacy reasons, because in legacy interpreter it was set to null by default.
inspectorAdapters		InspectorAdapters
result		Promise<Output | ExpressionValueError>
state		ExecutionContainer<Output | ExpressionValueError>	Dynamic state of the execution.

Methods

Method	Modifiers	Description
cancel()		Stop execution of expression.
cast(value, toTypeNames)
interpret(ast, input)
invokeChain(chainArr, input)
invokeFunction(fn, input, args)
resolveArgs(fnDef, input, argAsts)
start(input)		Call this method to start execution.N.B. input is initialized to null rather than undefined for legacy reasons, because in legacy interpreter it was set to null by default.