What's a good way to map from service fields to Flex value objects?

Question

I'd like a generalized approach to mapping from conventionally-named and conventionally-typed database objects, delivered using AMFPHP, to Flex/Actionscript naming conventions and types.

• I want to map naming conventions; SQL is case-insensitive, so our data model has column names like object_id. Convention, however, is that our flex objects have field names like objectId.
• I want to map to and from database representations of such concepts as DATE, TIMESTAMP and the Flex equivalent Date type.

This should all be bidirectional, of course. Basically, I want something that provides some of the services that Hibernate does for database to value object mapping, although ideally with a smaller volume of configuration.

All of this will be deployed in a Flex 3.x environment, so no Flex 4 suggestions, please.