Fast Object Database for Java - with JPA/JDO support

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use of Singleton into tomcat

hi all. i would write a class singleton that encapsulate the entitymanagerFACTORY into it.(the entitymanagerFactory IS A property of the only instance of class singleton. (the class singleton is not a Ejb!!!!!!!!!). into tomcat it not possible use ejbs............. i have to manage the concurrency

Bug with unique constraint exception not resulting in transaction roll back

I'm using ObjectDB 2.5.6_02 and running into a bug with a JDO @Unique constraint. I'm using JPA in general. I have an EJB persisting two entities with @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) declared on the EJB method. The two entities have the same value for the field

Update is ignored by ObjectDB

. @EJB SMDB lib; ... Order orderInfo = lib.fulfilOrder(orderID, userID,itemID ... for me everywhere except commit transactions in different entity managers. I think that this problem is related to EJB

Explorer bug ? Objects seem to be missing from database in Class view, but are present as references

exception: Caused by: javax.ejb.EJBException: Attempt to persist a reference to a non managed com.greensoft.entity.Block instance         at com.greensoft.ejb.RequestBean.createBlock(

Jboss 6 persistence.xml startup error

Hi, I'm trying to migrate a small EJB 3.1 project from Postgres to ObjectDb to test out feasibility, but I keep getting stuck on setting up the persistence.xml on JBoss 6 AS. Here is my setup:

Glassfish , OpenEJB Realm

Hello , i'm developing EJB Application. I was in dilemma using OpenEJB and Glassfish. They all support JDBC Realm but i want to use only ObjectDB solution. So , there is no JPA Realm for any application server.Thats big minus for objectdb. I will try to integrate for glassfish or openejb jparealm

What are the steps of creating small web app?

, JSP, EJB, JMS, JPA, JDBC,Security, Ajax using Primefaces. # Backend technologies: MYSQL, SQLite

UserException - Object User#2 belongs to another EntityManager

occurred while executing [@PostConstruct.] javax.ejb.EJBException: The bean encountered a non-application

Does ObjectDB create one instance of each entity class on (web app) load ?

across the system. Most of my EJB methods for querying are configurable with a pre-detach loader that "visits" any data

Replication error on slave restart

is over EJB persistance-unit (with objectdb-jee.jar v2.5.4_04) mastervoland Vladimir Sadovnikov

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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