Describe the feature

Update DynamoDB client to natively support a new datatype: com.amazonaws.arn.Arn

Use Case

We store many ARNs in our DynamoDB instance related to SQS topics, StepFunctions State Machines, etc. - would be nice for to have native support for ARNs in DynamoDB mapper.

Proposed Solution

Add ARN support to list of standard supported types.

https://github.com/aws/aws-sdk-java/blob/master/aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/datamodeling/StandardTypeConverters.java#L83

Other Information

• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBMapper.DataTypes.html
• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.NamingRulesDataTypes.html
• https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/arns/Arn.html

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

AWS Java SDK version used

2

JDK version used

JDK 11

Operating System and version

Linux