Questions tagged [data-transfer-objects]

147 questions
12 answers

What is a Data Transfer Object (DTO)?

In MVC are the model classes DTO? If not, what are the differences and do we need both?
11 answers

Why are data transfer objects (DTOs) an anti-pattern?

I've recently overheard people saying that data transfer objects (DTOs) are an anti-pattern. Why? What are the alternatives?
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Why should I isolate my domain entities from my presentation layer?

One part of domain-driven design that there doesn't seem to be a lot of detail on, is how and why you should isolate your domain model from your interface. I'm trying to convince my colleagues that this is a good practice, but I don't seem to be…
7 answers

Java data transfer object naming convention?

Given this scenario where you have "transfer objects" (POJO's with just getters/setters) which are passed by a client library to your API, what is the best way to name the transfer objects? package com.x.core; public class Car { private…
Marcus Leon
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4 answers

Difference between Transfer objects and Domain objects

Could you please explain the difference between Transfer objects and Domain objects in simple terms ? And if u could give a Java example, that would be great..
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9 answers

DTO or Domain Model Object in the View Layer?

I know this is probably an age-old question, but what is the better practice? Using a domain model object throughout all layers of your application, and even binding values directly to them on the JSP (I'm using JSF). Or convert a domain model…
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2 answers

What is a DTO and BO? What is the difference?

I know DTO is a data transfer object and a BO is a business object. But, what does it actually mean? When should I choose one over the other? From, what I understand DTO is just used to transfer data and doesn't have business logic. Does this mean…
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what is a good pattern for converting between hibernate entities and data transfer objects?

I have had similar questions and concerns as to how to convert between Hibernate entities and data transfer objects to be returned by a web service as are discussed in this question: Is using data transfer objects in ejb3 considered best…
D Parsin
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7 answers

Is a Data Transfer Object the same as a Value Object?

Is a Data Transfer Object the same as a Value Object or are they different? If they are different then where should we use a DTO and where should we use a VO? The programming language we are talking about is Java and the context is - there is a web…
2 answers

How to add a file into an already existing dataTransfer object using Javascript

Assumption: A local HTML/Javascript webpage that has access to file:// At the start of a drag on a draggable HTML element, in the event handler function dragStart(e), how do I add a File object so that it is recognized as a file and ends up in the…
2 answers

What is the purpose of a Data Transfer Object in NestJS?

Im struggling with a problem. Im following the documentation of NestJS. The back-end framework for NodeJS. The documentation mentions a DTO (Data Transfer Object). I created a DTO for creating a user: export class CreateUserDto { readonly email:…
6 answers

How much business logic should Value objects contain?

One mentor I respect suggests that a simple bean is a waste of time - that value objects 'MUST' contain some business logic to be useful. Another says such code is difficult to maintain and that all business logic must be externalized. I realize…
Vivek Kodira
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Can DTO's have nested DTO's?

I have the following domain model: public class Playlist { public long Id { get; set; } public string Title { get; set; } public virtual ICollection Songs { get; set; } } public class Song { public long Id { get; set; } …
3 answers

Why do transfer objects need to implement Serializable?

I realized today that I have blindly just followed this requirement for years without ever really asking why. Today, I ran across a NotSerializableException with a model object I created from scratch and I realized enough is enough. I was told this…
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Javascript DataTransfer items not persisting through async calls

I am using Vuejs along with DataTransfer to upload files asynchronously, and I want to allow multiple files to be dragged and dropped for upload at once. I can get the first upload to happen, but by the time that upload is done, Javascript has…
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