Class EvaluateExpression

java.lang.Object
software.amazon.jsii.JsiiObject
software.constructs.Construct
All Implemented Interfaces:
IConstruct, IDependable, IChainable, INextable, software.amazon.jsii.JsiiSerializable, software.constructs.IConstruct

@Generated(value="jsii-pacmak/1.84.0 (build 5404dcf)", date="2023-06-19T16:30:48.083Z") @Stability(Stable) public class EvaluateExpression extends TaskStateBase
A Step Functions Task to evaluate an expression.

OUTPUT: the output of this task is the evaluated expression.

Example:

 EvaluateExpression convertToSeconds = EvaluateExpression.Builder.create(this, "Convert to seconds")
         .expression("$.waitMilliseconds / 1000")
         .resultPath("$.waitSeconds")
         .build();
 EvaluateExpression createMessage = EvaluateExpression.Builder.create(this, "Create message")
         // Note: this is a string inside a string.
         .expression("`Now waiting ${$.waitSeconds} seconds...`")
         .runtime(Runtime.NODEJS_14_X)
         .resultPath("$.message")
         .build();
 SnsPublish publishMessage = SnsPublish.Builder.create(this, "Publish message")
         .topic(new Topic(this, "cool-topic"))
         .message(TaskInput.fromJsonPathAt("$.message"))
         .resultPath("$.sns")
         .build();
 Wait wait = Wait.Builder.create(this, "Wait")
         .time(WaitTime.secondsPath("$.waitSeconds"))
         .build();
 StateMachine.Builder.create(this, "StateMachine")
         .definition(convertToSeconds.next(createMessage).next(publishMessage).next(wait))
         .build();
 
  • Constructor Details

    • EvaluateExpression

      protected EvaluateExpression(software.amazon.jsii.JsiiObjectRef objRef)
    • EvaluateExpression

      protected EvaluateExpression(software.amazon.jsii.JsiiObject.InitializationMode initializationMode)
    • EvaluateExpression

      @Stability(Stable) public EvaluateExpression(@NotNull software.constructs.Construct scope, @NotNull String id, @NotNull EvaluateExpressionProps props)
      Parameters:
      scope - This parameter is required.
      id - This parameter is required.
      props - This parameter is required.
  • Method Details