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JPA Lifecycle Events

(added to the EntityManager). @PostPersist - after storing a new entity in the database (during commit or

Locking in JPA

object. The initial version of a new entity object (when it is stored in the database for the first time

Privacy Policy

the activity on Our Service and store certain information. Tracking technologies used are beacons, tags

Detached Entity Objects

that have been loaded before detachment should be used. Changes to detached entity objects are not stored in

Spring MVC and JPA Tutorial

are stored in an ObjectDB database. This tutorial is available in the following versions: In addition, the demonstrated application is available as a Maven project:

Step 4: Run the Application

installation directory. Running the application again will use the existing database file to store

Java EE Web Tutorial

by a Guest entity object and all the Guest entity objects are stored in an ObjectDB database

JPA Web Application Tutorial

a Guest entity object and all the Guest entity objects are stored in an ObjectDB database

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Entity Class] dialog box, e.g. by right clicking the project node (in the [Projects] window) and selecting New > Entity Class... (or New > Other... > Persistence > Entity Class and clicking

Getting Started with JPA

This tutorial demonstrates how to create and run a simple JPA application. The demonstrated application uses JPA to store and retrieve simple Point entity objects, where each Point has two persistent fields - x and y. If you already know JPA - the source code will be straightforward

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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