Bidirectional One-to-One Relations
We will discuss the following:
- Bidirectional One-to-One Relations.
- CRUD Operations
- mappedBy
- @JsonManagedReference
- @JsonBackReference.
We will do a small implementation incorporating all of the above.
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We will discuss the following:
We will do a small implementation incorporating all of the above.
In this article, we will discuss the following:
@Join
column annotation@JsonIgnore
annotation@Transient
annotationLet's look at the same use case of User and Role.
We will discuss about the following with a small implementation for creating a new user.
An introduction to CREATE Operation.
We will look into unidirectional one-to-many relations. We will use Cascade Types, a constructor-based dependency injection by removing the @Autowired
annotation. We will accomplish this with a small implementation where we will handle the DELETE operation, understand @PathVariable
annotation, use Orphan removal, and the @Transaction
annotation.
Let us consider an organization. Here there will be many employees, each taking up different tasks. Let us call the employees users and classify their tasks into roles they play. Some may be performing managerial task, so we'll give them the role MANAGER. Some may be performing system administration tasks, so we'll give them the role ADMIN.
Spring Security is a framework that provides authentication and authorization to Java applications.
Authentication is used to confirm the identity of a user, and authorization checks the privileges and rights a user has that determine what resources and actions they have access to within an application.