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Software Architecture in Java: Design & Development

Develop the Mock Service

Explore how to develop a mock service that performs create, read, update, and delete operations using an in-memory database following the Singleton pattern. Understand how these methods support managing entities in a concrete table inheritance structure within Java Spring applications.

We'll cover the following...

add function

Let’s look at a simple add to the in-memory convention database which is based on the Singleton pattern implemented as an enum.

Java
public enum EstateInMemoryDB {



	INSTANCE;

	

	private static List<EstateDto> list = new ArrayList<EstateDto>();

	private static Integer lastId = 0;

	

	public Integer getId() {

		return ++lastId;

	}

	

	public void add(EstateDto estateDto) {

		estateDto.setId(getId());

		list.add(estateDto);

	}

}

Create operation

We will watch the mock service for the create ...