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What should DTO be?
In the field of programming a data transfer object (DTO) is an object that carries data between processes. In other words, DTOs are simple objects that should not contain any business logic but may contain serialization and deserialization mechanisms for transferring data over the wire.
Is DTO an Antipattern?
DTOs are not an anti-pattern. When you’re sending some data across the wire (say, to an web page in an Ajax call), you want to be sure that you conserve bandwidth by only sending data that the destination will use.
What is the difference between DTO and Viewmodel?
The canonical definition of a DTO is the data shape of an object without any behavior. ViewModels are the model of the view. You can look at the viewmodel as all the data for a view plus behaviors. ViewModels may or may not map one to one to business objects or DTOs.
What is the point of DTO?
DTOs are called Data Transfer Objects because their whole purpose is to shift data in expensive remote calls. They are part of implementing a coarse grained interface which a remote interface needs for performance.
When to use Dao, DTO and service?
Service and DTO are also used for separation of concerns. DTO: The data object that we pass between different processes or within the same process. It can be a wrapper around the actual entity object. Using entity object as is for DTO is not safe and not recommended.
When do we need to return DTOs to a service?
Sometimes service needs to return data object that wasn’t defined in the domain and then we either have to add new object to the domain that isn’t mapped, or create POCO object (this is ugly, since some services return domain models, some effectively return DTOs).
How is a DTO used in an API?
As stated in the general design considerations, in most cases the DTO pattern should be implemented using an API Resource class representing the public data model exposed through the API and a custom data provider. In such cases, the class marked with @ApiResource will act as a DTO.
How to use data transfer objects ( DTOs )?
Using Data Transfer Objects (DTOs) As stated in the general design considerations, in most cases the DTO pattern should be implemented using an API Resource class representing the public data model exposed through the API and a custom data provider. In such cases, the class marked with @ApiResource will act as a DTO. However,…