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This week in JBoss - 20th November 2020

This week in JBoss - 20th November 2020 Welcome to another installment of our JBoss Editorial! Today, we’ll focus on some core project of our community. The first one is obviously Wildfly, our Jakarta EE application server whom predecessor (JBoss AS) was the beginning of everything. The second one is our more recent and shiny project, Quarkus. Without any further ado, let’s begin! Wildfly, a first Taste of Jakarta 9 With the...

baeldung

Defining Indexes in JPA

1. Introduction In this tutorial, we'll discuss defining indexes using JPA's @Index annotation. Through examples, we'll learn how to define our first index using JPA and Hibernate. After that, we're going to modify the definition showing additional ways to customize the index. 2. @Index Annotation Let's begin by making a quick recap. The database index is a data structure that improves the speed of data retrieval operations on a...

baeldung

Ignoring Fields With the JPA @Transient Annotation

1. Introduction When persisting Java objects into database records using an Object-Relational Mapping (ORM) framework, we often want to ignore certain fields. If the framework is compliant with the Java Persistence API (JPA), we can add the @Transient annotation to these fields. In this tutorial, we'll demonstrate proper usage of the @Transient annotation. We'll also look at its relationship with Java's built-in transient keyword. 2....

项目基于 Spring Boot 2.1.0 、 Jpa、 Spring Security、redis、Vue的前后端分离的后台管理系统,项目采用分模块开发方式, 权限控制采用 RBAC,支持数据字典与数据权限管理,支持一键生成前后端代码,支持动态路由
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项目基于 Spring Boot 2.1.0 、 Jpa、 Spring Security、redis、Vue的前后端分离的后台管理系统,项目采用分模块开发方式, 权限控制采用 RBAC,支持数据字典与数据权限管理,支持一键生成前后端代码,支持动态路由

elunez/eladmin 项目基于 Spring Boot 2.1.0 、 Jpa、 Spring Security、redis、Vue的前后端分离的后台管理系统,项目采用分模块开发方式, 权限控制采用...

baeldung

When Does JPA Set the Primary Key

1. Overview In this tutorial, we'll illustrate the moment when JPA assigns a value to the primary key. We'll clarify what the JPA specification says, and then, we'll show examples using various JPA strategies for primary key generation. 2. Problem Statement As we know, JPA (Java Persistence API) uses the EntityManager to manage the lifecycle of an Entity. At some point, the JPA provider needs to assign acvalue to the primary key. So,...