Created
July 22, 2019 09:25
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Sample AppSync Resolver for Query Local Secondary Index
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| ## REQUEST MAPPING | |
| { | |
| "version" : "2017-02-28", | |
| "operation" : "Query", | |
| "index": "shopID-vendorID-index", | |
| "query" : { | |
| "expression": "shopID = :shopID AND vendorID = :vendorID", | |
| "expressionValues" : { | |
| ":shopID" : $util.dynamodb.toDynamoDBJson($ctx.args.shopID), | |
| ":vendorID" : $util.dynamodb.toDynamoDBJson($ctx.args.vendorID) | |
| } | |
| } | |
| } | |
| ## RESPONSE MAPPING | |
| ## Query operation always returns a set of results not just one | |
| #if ($ctx.result.items.size() > 0) | |
| $util.toJson($ctx.result.items[0]) | |
| #else | |
| null | |
| #end |
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If you import your databases like I do, make sure you get the IAM stuff correct or you won't be able to use the secondary index, you'll get a permissions error.
Details here: aws/aws-cdk#14687