Data Transfer Object Design Pattern

overview

Data Transfer Object (DTO) is an object used to pass data with multiple items in one shot between client and server, to avoid client from issuing multiple calls to a remote server to get each item in separate calls.

Optionally, we can make use of a DTO Assembler class as some sort of a mapper in between DomainObject and DataTransferObject to map from one side to another in either direction. That is, to create a serializable DTO object given a Domain Object, or to update a Domain Object given a DTO object.

code example

Code Editor

scenarios

Use DTO pattern to:

• transfer data between processes/layers/objects. (e.g. between javax.persistence.Entity and org.springframework.http.ResponseEntity)
• ​encapsulate parameters for method calls.