In this article, we’ll explore how Java Records, available since Java 16, can be used in the context of JPA Application. We’ll uncover how Java Records, renowned for their simplicity and immutability, complement the flexibility and expressive querying abilities offered by the Criteria API.
jpa
How to set a custom initial value for Ids in JPA
In Java Persistence API (JPA), entities require unique identifiers for database records. JPA provides several strategies for generating these identifiers, such as IDENTITY, SEQUENCE, and TABLE. However, there are cases where you might need to set a custom initial value for these identifiers using the Table and Sequence strategy. In this tutorial, we will explore … Read more
How to set the Boolean default to true in JPA?
Java Persistence API (JPA) is a widely used technology for object-relational mapping in Java applications. While mapping Java objects to database tables, developers often need to set default values for certain attributes, such as boolean fields. In this article, we will explore different approaches to setting default values for boolean fields in JPA entities.
How to do a Database dump of H2 DB
Using the H2 Database is a common option when developing application prototypes. Once challenge is that, if you are using it as in-memory embedded H2 database , you cannot access the database from outside the JVM. A simple trick is to create a dump of the database, to check the data in all tables In this tutorial we will learn several ways to do that in a standard JPA application and in a Spring Boot application.
Understanding JPA Entity life cycle
This article discusses the life cycle of Entity objects in JPA Applications. Understanding the different stages that an Entity goes through is crucial for proper understanding of the JPA framework.
Choosing the Strategy for Primary keys in JPA
In JPA terms, the @Id annotation indicates the identifier of the entity maps the primary key of a Database Table. In this article we will learn how to choose the optimal strategy for primary key generation.
How to find slow SQL queries with Hibernate or JPA
Data persistence is one of the key factors when it comes to application performance. Therefore, it’s essential to keep track of the performance of your Database statements. First of all, it’s important to stress out that you can log statements emitted by Hibernate through one of the following methods: 1. Adding hibernate.show_sql property to your … Read more
