Amazon AppSync directives - Amazon AppSync
Directive utils
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Amazon AppSync directives

Note

We now primarily support the APPSYNC_JS runtime and its documentation. Please consider using the APPSYNC_JS runtime and its guides here.

Amazon AppSync exposes directives to facilitate developer productivity when writing in VTL.

Directive utils

#return(Object)

The #return(Object) allows you to prematurely return from any mapping template. #return(Object) is analogous to the return keyword in programming languages, as it will return from the closest scoped block of logic. Using #return(Object) inside of a resolver mapping template will return from the resolver. Additionally, using #return(Object) from a function mapping template will return from the function and will continue the run to either the next function in the pipeline or the resolver response mapping template.

#return

The #return directive exhibits the same behaviors as #return(Object), but null will be returned instead.