Develop the Mock Service

Explore building a mock service that manages an in-memory collection of CategoryDto instances to simulate one-to-many self-referencing relationships in Java. Understand how to implement create, find, edit, and remove operations while applying the Singleton design pattern with enum. This lesson prepares you to develop service layers handling complex data structures for efficient application design.

We'll cover the following...

- add function
- Create operation
- Row identifier operation
- Remove operation
- Edit operation

1.Software Architecture

2.Managing a Standalone Entity

3.One-to-One Uni-directional Relationship

4.One-to-One Bi-directional Relationship

5.One-to-One Self-Referencing Relationship

6.One-to-Many Uni-directional Relationship

7.One-to-Many Bi-directional Relationship

8.One-to-Many Self-Referencing Relationship

9.Many-to-Many Unidirectional Relationship

10.Many-to-Many Bi-directional Relationship

11.Many-to-Many Bi-directional with Join-Attribute Relationship

12.Many-to-Many Self-Referencing Relationship

13.Many-to-Many Self-Referencing with Join-Attribute Relationship

14.Single Table Inheritance

15.Concrete Table Inheritance

16.Class Table Inheritance

17.Appendix

Project

Develop the Mock Service

`add` function

Develop the Mock Service

add function

`add` function