Develop the Data Transfer Object

We will look at developing the UI in this lesson and also define the data transfer object.

We'll cover the following

There are three major tasks we look at during the development of the mock user interface. They are:

  • The data transfer object
  • The mock service
  • The mock user interface

Data transfer object

Here, the data transfer object does not have the Cart entity. Since the Customer and Cart share a one-to-one relationship, in an instance of Customer there can be only one instance of the Cart.

We are hiding from the user that we are saving the relationship as a one-to-one bi-directional relationship.

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