AWS AppSync resolver mapping template reference (VTL)

Note

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

The following sections will describe how utility operations can be used in mapping templates:

• Resolver mapping template overview - Learn more about how resolvers work in AWS AppSync.

• Resolver mapping template programming guide - Learn more about basic VTL data structures and logic handling.

• Resolver mapping template context reference - Learn more about the context map and how it's used in resolvers.

• Resolver mapping template utility reference - Learn more about using utilities to simplify code.

• Resolver mapping template reference for DynamoDB - Learn more about how resolvers interact with DynamoDB.

• Resolver mapping template reference for RDS - Learn more about resolver structure and interactions with RDS.

• Resolver mapping template reference for OpenSearch - Learn more about resolver request and response structure and interactions with OpenSearch Service.

• Resolver mapping template reference for Lambda - Learn more about resolver request and response structure and interactions with Lambda.

• Resolver mapping template reference for EventBridge - Learn more about resolver request and response structure and interactions with EventBridge.

• Resolver mapping template reference for None data source - Learn more about resolver request and response structure and interactions with NONE data sources.

• Resolver mapping template reference for HTTP - Learn more about resolver request and response structure and interactions with HTTP endpoints.