About JPA

manual

Database Explorer

Explains how to run and use the ObjectDB object database Explorer to view and manage Java/JPA/JDO objects visually. ObjectDB Database Explorer is a visual GUI tool for managing ObjectDB databases. It can be used to view data in ObjectDB databases, execute JPQL and JDOQL queries and edit the content of databases. This page covers the followi ...

 
page

Privacy Policy

What is this Privacy Policy for? This privacy policy is for this website www.objectdb.com and served by ObjectDB Software Ltd and governs the privacy of its users who choose to use it. The policy sets out the different areas where use ...

 
release

2.5.1

... Added support of disabling detachment on rollback in JPA. Added support of using entity instead of a PK in find ... Version 2.2.4 Added support of JPA UPDATE and DELETE queries ( issue #11 ). Added support of ...

 
forum_thread

Listing large number of complicated objects with paging.

Hi, For last few hours I was working on a problem with bad performance and memory problems with such a simple query: select prod from Product prod order by prod.id ASC Right now I have 55541 'Product' (attached to this post) entities in database and I'm trying to speed listing them with paging. The problem is, that running code that looks like this: ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ...

 
manual

Database Explorer

Explains how to run and use the ObjectDB object database Explorer to view and manage Java/JPA/JDO objects visually. ObjectDB Database Explorer is a visual GUI tool for managing ObjectDB databases. It can be used to view data in ObjectDB databases, execute JPQL and JDOQL queries and edit the content of databases. This page covers the followi ...

 
issue

Server out of memory exceptions

I've started to get memory exceptions on objectdb instances running as a server. The objectdb log reports this as: ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ...

 
forum_thread

Replication issue, Replayer failing due to NullPointerException.

I'm getting replication errors and upon trying to play the replayer I get a NullPointerException which i'm also seeing in the slave logs when it's trying to replicate... ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ...

 
forum_thread

Error using query with MAX() function

I have a class that is persisting a Entity that holds remarks and a time. Then when I query for the latest remark I get a internal error when the remark is larger than 1966 chars. Here is a test class and entity that reproduces the problem on my system. ... at com.objectdb.o.QRR.b(QRR.java:139) at com.objectdb.jpa.JpaQuery.getSingleResult(JpaQuery.java:607) at ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ... at com.objectdb.o.QRR.b(QRR.java:139) at com.objectdb.jpa.JpaQuery.getSingleResult(JpaQuery.java:607) at ...

 
issue

version 2.4.5+ with GlassFish 3.1.2, errors when runs application. Version 2.4.4 worked but not 2.4.5 or later

javax.ejb.EJBException at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5215) at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5113) at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4901) at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2045) at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1994) at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:222)... com.objectdb.jpa.JpaQuery.getResultList(JpaQuery.java:695) at ... com.objectdb.o.QRR.f(QRR.java:153) at com.objectdb.jpa.JpaQuery.getResultList(JpaQuery.java:686) ... Support ObjectDB - Fast Object Database for Java (JPA/JDO) edit ...

 
release

2.5.0

... Added support of disabling detachment on rollback in JPA. Added support of using entity instead of a PK in find ... Version 2.2.4 Added support of JPA UPDATE and DELETE queries ( issue #11 ). Added support of ...