software.amazon.awscdk.services.iotevents

Enum EventEvaluation

java.lang.Object

java.lang.Enum<EventEvaluation>

software.amazon.awscdk.services.iotevents.EventEvaluation

All Implemented Interfaces:

Serializable, Comparable<EventEvaluation>

@Generated(value="jsii-pacmak/1.58.0 (build f8ba112)",
           date="2022-05-11T19:24:32.679Z")
 @Stability(value=Experimental)
public enum EventEvaluation
extends Enum<EventEvaluation>

(experimental) Information about the order in which events are evaluated and how actions are executed.

Example:

 import software.amazon.awscdk.core.*;
 import software.amazon.awscdk.core.*;
 import software.amazon.awscdk.core.*;
 IFunction func;
 Input input = Input.Builder.create(this, "MyInput")
         .inputName("my_input") // optional
         .attributeJsonPaths(List.of("payload.deviceId", "payload.temperature"))
         .build();
 State warmState = State.Builder.create()
         .stateName("warm")
         .onEnter(List.of(Event.builder()
                 .eventName("test-enter-event")
                 .condition(Expression.currentInput(input))
                 .actions(List.of(new LambdaInvokeAction(func)))
                 .build()))
         .onInput(List.of(Event.builder() // optional
                 .eventName("test-input-event")
                 .actions(List.of(new LambdaInvokeAction(func))).build()))
         .onExit(List.of(Event.builder() // optional
                 .eventName("test-exit-event")
                 .actions(List.of(new LambdaInvokeAction(func))).build()))
         .build();
 State coldState = State.Builder.create()
         .stateName("cold")
         .build();
 // transit to coldState when temperature is less than 15
 warmState.transitionTo(coldState, TransitionOptions.builder()
         .eventName("to_coldState") // optional property, default by combining the names of the States
         .when(Expression.lt(Expression.inputAttribute(input, "payload.temperature"), Expression.fromString("15")))
         .executing(List.of(new LambdaInvokeAction(func)))
         .build());
 // transit to warmState when temperature is greater than or equal to 15
 coldState.transitionTo(warmState, TransitionOptions.builder()
         .when(Expression.gte(Expression.inputAttribute(input, "payload.temperature"), Expression.fromString("15")))
         .build());
 DetectorModel.Builder.create(this, "MyDetectorModel")
         .detectorModelName("test-detector-model") // optional
         .description("test-detector-model-description") // optional property, default is none
         .evaluationMethod(EventEvaluation.SERIAL) // optional property, default is iotevents.EventEvaluation.BATCH
         .detectorKey("payload.deviceId") // optional property, default is none and single detector instance will be created and all inputs will be routed to it
         .initialState(warmState)
         .build();
 

Enum Constant Summary

Enum Constants

Enum Constant and Description
BATCH (experimental) When setting to BATCH, variables within a state are updated and events within a state are performed only after all event conditions are evaluated.
SERIAL (experimental) When setting to SERIAL, variables are updated and event conditions are evaluated in the order that the events are defined.

Method Summary

Modifier and Type	Method and Description
static EventEvaluation	valueOf(String name) Returns the enum constant of this type with the specified name.
static EventEvaluation[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

BATCH

@Stability(value=Experimental)
public static final EventEvaluation BATCH

(experimental) When setting to BATCH, variables within a state are updated and events within a state are performed only after all event conditions are evaluated.

SERIAL

@Stability(value=Experimental)
public static final EventEvaluation SERIAL

(experimental) When setting to SERIAL, variables are updated and event conditions are evaluated in the order that the events are defined.

Method Detail

values

public static EventEvaluation[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (EventEvaluation c : EventEvaluation.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static EventEvaluation valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null