com.amazonaws.services.stepfunctions.builder.states

Interface ResultSelectorBuilder<BuilderT>

Type Parameters:

BuilderT - Type of concrete builder (for method chaining).

All Known Implementing Classes:

MapState.Builder, ParallelState.Builder, TaskState.Builder

public interface ResultSelectorBuilder<BuilderT>

Interface for all builders that expose the 'ResultSelector' field.

This interface should not be implemented outside the SDK.

Method Summary

Modifier and Type	Method and Description
BuilderT	resultSelector(Object resultSelector) OPTIONAL.
BuilderT	resultSelector(String resultSelector) OPTIONAL.

Method Detail

resultSelector

BuilderT resultSelector(String resultSelector)

OPTIONAL. The value of "ResultSelector" MUST be a Payload Template which is a JSON object, whose input is the result, and whose payload replaces and becomes the effective result. Values from the result of the state can be interpolated via a JSON path expression. To be interpolated the field name of the JSON object must end in the suffix ".$". See example below.

Given the following ResultSelector and ResultPath definition.

 
 {
 ...
   "ResultSelector": {
     "ClusterId.$": "$.output.ClusterId",
     "ResourceType.$": "$.resourceType"
   },
   "ResultPath": "$.EMROutput"
 ...
 }
 
 

Suppose the result of the Task is as follows:

 
 {
 ...
   "resourceType": "elasticmapreduce",
   "output": {
     "ClusterId": "AKIAIOSFODNN7EXAMPLE"
   }
 ...
 }
 
 

Then the effective result from the task will be as follows:

 
 {
 ...
   "EMROutput": {
     "ClusterId": "AKIAIOSFODNN7EXAMPLE",
     "ResourceType": "elasticmapreduce"
   }
 ...
 }

 
 

Parameters:

resultSelector - Raw JSON string representing ResultSelector value.

Returns:

This object for method chaining.

resultSelector

BuilderT resultSelector(Object resultSelector)

OPTIONAL. The value of "ResultSelector" MUST be a Payload Template which is a JSON object, whose input is the result, and whose payload replaces and becomes the effective result. Values from the result of the state can be interpolated via a JSON path expression. To be interpolated the field name of the JSON object must end in the suffix ".$". See example below.

Given the following ResultSelector and ResultPath definition.

 
 {
 ...
   "ResultSelector": {
     "ClusterId.$": "$.output.ClusterId",
     "ResourceType.$": "$.resourceType"
   },
   "ResultPath": "$.EMROutput"
 ...
 }
 
 

Suppose the result of the Task is as follows:

 
 {
 ...
   "resourceType": "elasticmapreduce",
   "output": {
     "ClusterId": "AKIAIOSFODNN7EXAMPLE"
   }
 ...
 }
 
 

Then the effective result from the task will be as follows:

 
 {
 ...
   "EMROutput": {
     "ClusterId": "AKIAIOSFODNN7EXAMPLE",
     "ResourceType": "elasticmapreduce"
   }
 ...
 }

 
 

Parameters:

resultSelector - Object that will be serialized into the JSON document representing this state's ResultSelector.

Returns:

This object for method chaining.