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2.5.4

Release date: 2014-01-05 Download (5.46 MB) Binary:  objectdb-2.5.4.zip You should start by following a  tutorial or reading the manual ...

 
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JPA vs JDO - which is more efficient for OneToMany queries?

I'm curious about the trade offs between JDO and JPA. Seems to me that JDO will perform better and be statically typed. For example: Assume there are Customers and Orders.... set automatically, but only when you read the object that contains the inverse field (again) or refresh it. 2) You have to persist ...

 
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ODB should auto-restart if it detects it's necessary

Hi! I find very tricky the need to restart ObjectDB server after schema modifications in a distributed environment. Moreover, not doing it does sometimes trigger ugly errors, which mean application downtime. It might be very useful to have an additional feature (that could be enabled/disabled in objectdb.config) that each time ObjectDB detects a schema change that requires restart, it should automatically restart itself. This way we save a lot of headaches from our dev. ops. Currently we have to manually do: ... a solution is in high priority. ObjectDB already contains a mechanism for supporting live schema evolution without restarting ...

 
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significant performance decrease

we are using objected in embedded mode (on OS X and WINDOWS). The database increased now to around 400000 entities of one class (database file size around 1.5 GByte). The response time of standard queries increased with this database size to an unacceptable rate (several seconds compared to around 30% when the number of entities was just half of the current). We tried to optimize the cache settings, current objectdb.conf is: <!-- ObjectDB Configuration --> <objectdb> #1 2016-03-15 14:57 we are using objected in embedded mode (on OS X and WINDOWS). The database increased now to around 400000 entitie ...

 
release

2.5.3

Release date: 2013-09-04 Download (5.43 MB) Binary:  objectdb-2.5.3.zip You should start by following a  tutorial or reading the manual ...

 
release

2.5.2

Release date: 2013-08-13 Download (5.43 MB) Binary:  objectdb-2.5.2.zip You should start by following a  tutorial or reading the manual ...

 
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Project runs in Eclipse but not when exported to runnable jar

I have a simple project that performs some stability calculations and displays a scale drawing of a model glider. I decided to use objectdb as a way to persist the values for later retrieval. The project works perfectly well when run from eclipse but nothing opens when I export to a runnable jar and execute that. No windows open, there are no eror dialogs etc. Commenting out all the code related to object db resolves the issue and the project runs, so I'm fairly sure it is something I've done relating to objectdb. ... the result of using this special form of wrapper jar that contains other jar files. Unfortunately I cannot reproduce the ...

 
release

2.2.4

Release date: 2011-05-09 Download (5.09 MB) Binary:  objectdb-2.2.4.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

using DbUnit with ObjectDb

Are there any examples about how to use DbUnit with ObjectDB? DbUnit requires access to a jdbc connection .. with other providers it's possible to extract the jdbc connection from the EntityManager, e.g. for Eclipselink / Postgres combination you can use the rather long-winded: IDatabaseConnection connection = new DatabaseConnection(((EntityManagerImpl) (em2.getDelegate())).getServerSession().getAccessor().getConnection(), "PUBLIC"); but with objectDb this gives: #1 2011-09-05 10:07 Are there any examples about how to use DbUnit with ObjectDB? DbUnit requires access to a jdbc connection ...

 
release

2.5.1

Release date: 2013-05-30 Download (5.43 MB) Binary:  objectdb-2.5.1.zip You should start by following a  tutorial or reading the manual ...