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Multi-tenant setup

schema or multiple database. How to handle connections between app (Jboss Wildfly) and pass query ... ). It is more tricky when using ObjectDB within an application server as automatic injection of entity ... classes for the common data and maps (as persistent fields) to store specific tenant data as key/value pairs. support Support

Embedded Database Replication

As we all know, embedded databases out perform server databases on every occasion. The problem ... is optimal and healthy? Alternatively some kind of jboss style UDP broadcast from each embedded ... the server url for replication as with an ordinary server. support Support

Object belongs to another EntityManager - ERROR


Many connections possible? and will it makes problem in future?

this should be handled by the application server or web server (GlassFish, JBoss, Tomcat) or by dedicated ... , but they are limited by practical factors such as thread numbers (depending on your operating

Connections pool

Hi! Does ObjectDB keeps and reuses a pool of connections as MySQL JDBC driver does? I mean when it's used in a container like Tomcat, Glassfish, JBoss etc. Thank you. zmirc Mircea Chirac Yes. Every EntityManagerFactory instance manages a pool of connections and reuses them when it creates new

Web Framework Recommendation for leveraging JPA + ObjectDB

can switch Persistence Engines as I see fit later on ! So that I can easily switch to a true OODBMS ... are: Servlet container (Tomcat / Jetty) with servlets and JSPs. Java EE application server (JBoss

Chapter 4 - JPA Queries (JPQL / Criteria)

The JPA Query Language (JPQL) can be considered as an object oriented version of SQL. Users familiar with SQL should find JPQL very easy to learn and use. This chapter explains how to use JPQL as well as how to use the JPA Criteria API, which provides an alternative way for building queries in JPA

File lock exception on odb$

. We had a server failure which caused an unexpected reboot. As a result, the application services which use ... below. No other process had a lock on the file, especially as the server had just been rebooted ... affected as the dbs were empty anyway but I'm a bit worried about data loss if & when this is not

ObjectDB 2.4.3

Added support for using ObjectDB with JBoss AS 7.1.1. Improved performance of merging managed entities. Fixed a deadlock. Changed license checks.

ObjectDB 2.3.1

Added support for using ObjectDB with JBoss AS 7.0. Sample databases (world.odb, points.odb) included in ObjectDB distribution. New default Explorer colors (apply with Tools > Options > Fonts > Reset All). New menu for accessing local databases (in $objectdb/db) in the Explorer. Improved

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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