In this example, you will learn how to map components using Hibernate Annotations. Consider the following relationship between Student and Address entity.

In this tutorial, we'll see how we can map one entity that contains embedded properties to a single database table. So, for this purpose, we'll use the @Embeddable and @Embedded annotations provided by the JPA.

Hibernate ORM 5.2.17 now allows you to use the @prepersist and @preupdate JPA entity listeners, we can simplify the previous example, as you may see in this article.

We want to encapsulate the audit logic in the Audit embeddable type:

    //Getters and setters omitted for brevity

The JPA entities will use the Audit embeddable type as follows:

        joinColumns = @JoinColumn(name = "post_id"),

        inverseJoinColumns = @JoinColumn(name = "tag_id")

    private List<Tag> tags = new ArrayList<>();

Hibernate properly sets the created_on and created_by columns on the associated tag rows:

How to use @PrePersist and @PreUpdate on Embeddable with JPA and Hibernate - Let's start the discussion

prepersist

Trending Blogposts on prepersist

How to use @PrePersist and @PreUpdate on Embeddable with JPA and Hibernate

Popular Discussions on prepersist

PRODUCTS

QUICK LINKS

LEGAL

prepersist

Trending Blogposts on prepersist

How to use @PrePersist and @PreUpdate on Embeddable with JPA and Hibernate

Popular Discussions on prepersist