There are Object Mappers for JPA support for NoSQL databases like Mongo, Couch in Hibernate OGM, Spring Data. But, I could not able to find any reliable and actively developed framework for Dynamodb.
I looked spring-data-dynamodb, but it is stated that:
Due to external time and project commitments, I'm no longer able to continue active development of this project as of January 2016. Thank you to everyone involved in shaping the project over the past few years and thanks to all those who have raised issues and submitted pull requests over the time.
This lack of support causes model integration problems with widely used Java MVC frameworks.
Could you please explain me the technical details, why there is not a complete Dynamodb Object Mapper for JPA support?