How to convert T object to Amazon DynamoDB Document dynamically

Question

I am trying to use DynamoDB in Amazon AWS in my MVC .net project. And I am also trying to do a Business-DataAccess-Model layered project.

I have a GenericDataRepository class which implements an Add() functionality.

I am sending a T object to Add() and I would like to convert that to Amazon's Document object, dynamically. How can I do that and what is the best practice?

public void Add(T entity)
{
    if (entity == null)
        return;

    var doc = new Document();

    // Convert entity to Document automatically
    doc["Title"] = entity.Title;
    doc["Body"] = entity.Body;
    doc["Author"] = entity.Author;
    // Convert entity to Document automatically


    .....
    .....       
    .....
}

Answer 1

In a Latest version of aws dynamo db SDK. this feature is supported, you can achieve your goal without any hassle. Simple and Fast

    public Document Add <T>(T entity, IAmazonDynamoDB dbClient)
            {
                Amazon.DynamoDBv2.DataModel.DynamoDBContext db = new Amazon.DynamoDBv2.DataModel.DynamoDBContext(dbClient);                                   
                Document document = db.ToDocument(entity);
                return document;
            }

Answer 2

I think you can use Json.net to serialize your object to json and then create dynamoDb document form it according to their docs:

var jsonText = JsonConvert.SerializeObject(entity, Formatting.Indented);
var item = Document.FromJson(jsonText);