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release

2.4.0

... to TRACE  ( issue #88 ). Changed main configuration elements from required to optional. Fixed the ...

 
issue

Internal Exception and Index Problems

Dear Support Team, we have an urgent issue in a productive database. The objectdb doctor finds no error but one string field of one database item is not editable (even not using the objectdb explorer). The corrupt entry is in entity "UserModelData" with id="7d29d5eb-69a6-4d46-9bf1-802cbb6e439b". Try to change the userName attribute of this entry then the following error occurs: ... repairing the database with the doctor in repair mode. The main issue we have is that we don't get any exception from the database ...

 
forum_thread

mapping file is not being loaded

Hi, I am evaluating ObjectDB by using it with an in-house developed library in order to prototype its capabilities / performance. I am having a problem in that the in-house library in question reads a simple configuration file to determine available persistence units, and then bootstraps them using the JPA Persistance.createEntityManagerFactory() method and passing in the persistence unit name (again, obtained from the configuration file ). ... F444 {   public static void main ( String [ ] args ) { ...

 
forum_thread

Issue with Casting / Joins

Hi I can't seem to find my way out of this. Basically what I have is something like: ... F328 {   public static void main ( String [ ] args ) { ...

 
forum_thread

Speed of queries that return many objects

Hi, I have a DB of 146MB - with 1_000_000 elements. Loading the contents (objectDB query in java) takes about 10sec. I am using a recent MacBook (SSD blabla - disk I/O speed is about 400MB/sec - according to blackMagicTest app for mac) - so I was expecting the query to take less than one sec (146/400 = 0.35sec.. + some overhead). I was wondering if this kind of speed is "normal", or if this is something I should investigate. Thanks EKK ... not a standard database (or object database) activity. The main idea of a database is that large amount of data is stored in a secondary ...

 
forum_thread

Apache Tomee 1.5.2: Failed to use JTA (TransactionManager is not found)

Hello, ObjectDB team! I am struggling with getting ObjectDB 2.5.0 to work with clean Apache Tomee 1.5.2 with transaction-type="JTA". I don't have any configurations in Tomee (objectdb.jar is in Tomee's classpath) nor other parts, excepting the following persistence.xml: ... Thanks for such a quick reply. That's one of the main reasons I love ObjectDB. It seemed that actually I was putting ...

 
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

Blocked by find

I have a container object which wraps an objectdb database. There is a "putIfAbsent(String id, Object obj)" method which is synchronized and attempts to load an object by id using the EntityManager "find" method. If nothing is returned from the db the passed object is persisted to the db. I have 5 threads which use this method. In a run today one of the threads seems to have got stuck somewhere in the find. The thread dump looks like: ... aim of this database is to provide a data cache for the main application - access is typically a number of persists as a request enters ... the delete query still halts the test though. My main app is using enhancement so we're ok on that front. String ids are ...

 
forum_thread

can't get HashMap out of the database

I'm trying to persist an Entity containing a HashMap. It stores the data in the database OK, but the map is always empty when I get the entity out of the database again. I've reproduced this problem in a simple variation of the Guestbook tutorial: Guest class: ===================== ... see attached. If you run the test in /Guestbook/src/main/java/guest/audit/AuditDAOImplTest.java you can see that the AuditRecord ...

 
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 ...