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Tutorial
9

JPA Web Application Tutorial

a Guest entity object and all the Guest entity objects are stored in an ObjectDB database ... This tutorial demonstrates how to create and run a database driven Java web application using Tomcat 6, ObjectDB and JPA. The demo web application manages a basic guestbook page. Every visitor
Tutorial
9

NetBeans/JPA Web Application Tutorial

a database driven Java web application in NetBeans - using Tomcat 6 Apache Tomcat Server 6.0 (some ... that has signed the guestbook is represented by a Guest entity object and all the Guest entity objects are stored in an ObjectDB database. Required Software For this tutorial you will need the following software
Tutorial
9

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the project node (in the [Package Explorer] window ... should represent Point objects in the database. Besides the @Entity annotation and the id field
Tutorial
9

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the tutorial package node (in the [Projects] window ... ("(%d, %d)", this.x, this.y); } } The new class should represent Point objects in the database
Result
9

What is new in ObjectDB 2.0?

optimistic locking support. Performance improvement in writing and reading of objects. Level 2 (PersistenceManagerFactory scope) object data cache. Query program cache for repeating queries ... configurable database page cache. Designed to support very large database files (terabytes). Reducing round
Result
9

How to upgrade from ObjectDB 1.0?

the new Enhancer. Convert old database files using the ObjectDB converter: > java -jar converter.jar ... is more sensitive to failure to close a PersistenceManagerFactory. The database is closed ... . To use embedded objects you must declare classes as embeddable (rather than the reference fields
Forum
9

Multi-Threading/Distributed-Database Questions...

Greetings ObjectDB team, All below questions assume a very large database (~1,000,000,000 objects ... objects on both, i.e. distributed database/graph of objects ? Kind Regards and Thanks ! Activity ... thread. References from objects in one database to objects in another database are not supported
Forum
9

Using multiple databases

at a time? Also, can objects in one database reference objects in another database (e.g ... database connection requires a separate EntityManager/PersistenceManager. References to objects in another database are not supported. Of course, you can keep IDs of the other database objects and manage
Forum
9

ObjectDB's Database Doctor Incorrect Error Report

to the object and the existence of the object. There is indeed a problem with this database file ... Am I reading this correctly?  It seems that Doctor is telling me that one of my objects is missing.  Looking at the database with ObjectDB's Database Explorer though seems to show that the reference
Forum
9

ClassCastException of same object type

I have ObjectDB partially working with my project. At the moment it seems to be saving objects and retrieving objects ok in the main project. However, when I make a plugin for the project, the new objects are persisted but not retrieved. I get the following error: java.lang.ClassCastException: org