AWS Fundamentals Logo
AWS Fundamentals
L2 Construct

Choice

Define a Choice in the state machine. A choice state can be used to make decisions based on the execution state.

Import

import { Choice } from 'aws-cdk-lib/aws-stepfunctions';

Or use the module namespace:

import * as stepfunctions from 'aws-cdk-lib/aws-stepfunctions';
// stepfunctions.Choice

Properties

Configuration passed to the constructor as ChoiceProps.

3 properties inherited from StateBaseProps
commentOptionalinherited from StateBaseProps
string

A comment describing this state.

Default: No comment

queryLanguageOptionalinherited from StateBaseProps
QueryLanguage

The name of the query language used by the state. If the state does not contain a `queryLanguage` field, then it will use the query language specified in the top-level `queryLanguage` field.

Default: - JSONPath

stateNameOptionalinherited from StateBaseProps
string

Optional name for this state.

Default: - The construct ID will be used as state name

1 property inherited from AssignableStateOptions
assignOptionalinherited from AssignableStateOptions
{ [key: string]: any }

Workflow variables to store in this step. Using workflow variables, you can store data in a step and retrieve that data in future steps.

Default: - Not assign variables

2 properties inherited from JsonPathCommonOptions
inputPathOptionalinherited from JsonPathCommonOptions
string

JSONPath expression to select part of the state to be the input to this state. May also be the special value JsonPath.DISCARD, which will cause the effective input to be the empty object {}.

Default: $

outputPathOptionalinherited from JsonPathCommonOptions
string

JSONPath expression to select part of the state to be the output to this state. May also be the special value JsonPath.DISCARD, which will cause the effective output to be the empty object {}.

Default: $

1 property inherited from JsonataCommonOptions
outputsOptionalinherited from JsonataCommonOptions
any

Used to specify and transform output from the state. When specified, the value overrides the state output default. The output field accepts any JSON value (object, array, string, number, boolean, null). Any string value, including those inside objects or arrays, will be evaluated as JSONata if surrounded by {% %} characters. Output also accepts a JSONata expression directly.

Default: - $states.result or $states.errorOutput

Get the AWS Step Functions Cheat Sheet

Everything you need to know about AWS Step Functions on one page. HD quality, print-friendly.

Download Free Infographic

Quick Facts

LevelL2 (Higher-level)
Moduleaws-stepfunctions
Properties7

Related Constructs

Explore This Service

External Links