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54

To open source, or not to open source

are not been backported to stable releases, but only put into bleeding edge branches. Therefore we do the bugfix backporting ourself. This would not have be possible if db4o was close source
54

Record is not clearing properly on remove

I have a entity Agent which is one-to-many relationship with entity AgentGroup but when i delete Agent ,it is removed from db but in AgentGroup it is not removed properly. Agent ... (the agent) and the mapped-by side (the agent group) will not include the removed object
54

The project does not contain a persistence unit

How do I fix this error/warning that Netbeans gives me regarding no persistence unit? ThreaT Ashton Hogan ObjectDB itself does not require a persistence unit, but NetBeans produces this warning ... Hogan Maybe the META-INF directory is not in the right place. See the Java EE / JPA / Netbeans tutorial
54

Level 2 cache not hit in @ManyToOne

and reading in my app). Problem 1: find by id on Item it's good, it hits the cache, but not for its field ... execution round trip. However, in that case, if not all the results are cached, retrieving them later
54

CASE WHEN...THEN...ELSE...END not working using JPQL/JDOQL

that ObjectDB does not support yet. support Support Thank you. Do you know what alternative should I use ... ? ( I could not add a new field to the class because it is a Map which handle dynamic key
54

Method not found on...

: Method 'hasAlias' is not found in type 'Language' Ieodaq Daniele Lotti I found out this error too: Method 'containsAll' is not found in type 'java.util.List' if I call something like this: SELECT g
54

CriteriaBuilder createCriteriaUpdate are not executing

Regards all!! CriteriaBuilder createCriteriaUpdate are not executing. CriteriaUpdate<Order> criteriaUpdate = cb.createCriteriaUpdate(Order.class); java.lang.UnsupportedOperationException at com ... that is not implemented yet in ObjectDB. support Support Thank you! I'll be anxiously waiting for this news. flavioreboucassantos Flávio Rebouças Santos
10

Objects are not garbage collected

graph of objects so it will not be hold in memory by the JVM. support Support Thank ... EmbeddedSystems We can now verify that this is indeed an issue with the UnitOfWorkContext, so not
10

WeakRef Purge ObjectDb threads not stopping with Tomcat (in application container)

Hi, We have threads that are not stopping with Tomcat requiring a hard stop of the container. Can you please help us resolve this issue? Thanks, Clinton / Fazle What is the impact of the issue ... allocated to the previous web application instance is not garbage collected due to these threads being alive
10

Entity field renaming does not work

Hello, we use the ObjectDB version 2.8.5_05. We want to rename a field in an entity and it does not work: from: package com.btc.ep.analysis.verdict.tolerance.bl.internal.dmos; @Entity @Access ... well in our small tests (and also the relevant code in ObjectDB has not been changed recently

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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