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Notes on Java, architecture, cloud, and AI. Filter by month or tags to jump to a topic quickly.
JPA / Hibernate – Use a Map as an association
In this article we will see how to use a Map as an association between our entities, according to the Hibernate documentation, there are several annotations available (@MapKey, @MapKeyColumn, @MapKeyJoinColumn, @MapKeyEnumerated, @MapKeyTemporal, etc.)
Difference between Hibernate and JPA
Let's talk about Hibernate and JPA.
Java Persistence – Converting Hibernate xml mapping to JPA annotations
After the introduction of annotations in Java 5, JPA and Hibernate offered annotations to define entity mappings.
JPA/EclipseLink - Component Mapping Using Annotations |@Embeddable & @Embedded
In this example, we will learn Component Mapping using JPA annotations.Component Mapping represents the has-a relationship, composition is a stronger association where the contained object has no existence of its own.For example, a student has an address, an address cannot exist
JPA/Hibernate – Embedding a Composite Primary Key (@Embeddable, @EmbeddedId)
In this example, we will learn how to embed a composite primary key, we will declare the IDs (primary key fields) as a separate class annotated with the @Embeddable annotation.A student is identified by its StudentCompositeId, which is defined by eleveId and class.
Spring Security – WebSecurityConfigurerAdapter deprecated!
In this article, I would like to share how to get rid of the warning saying “WebSecurityConfigurerAdapter is deprecated” in a Spring based application with Spring Security.
