Version 1 Java lambda handler

LambdaV1.java

public class BookHandler implements RequestHandler<APIGatewayProxyRequestEvent, APIGatewayProxyResponseEvent> {

    private static final String TABLE_NAME = "books";
    private final RequestDispatcher requestDispatcher;

    public BookHandler() {
        DynamoDbEnhancedClient dynamoDbEnhancedClient = DynamoDbEnhancedClient.create();
        DynamoDbTable<Book> dynamoDbTable = dynamoDbEnhancedClient.table(TABLE_NAME, TableSchema.fromBean(Book.class));
        requestDispatcher = new RequestDispatcher(new EnhancedClientBookStorage(dynamoDbTable), new ObjectMapper());
    }


    @Override
    public APIGatewayProxyResponseEvent handleRequest(APIGatewayProxyRequestEvent apiGatewayProxyRequestEvent, Context context) {
        return requestDispatcher.dispatch(apiGatewayProxyRequestEvent);
    }
}