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forum_thread

Geospatial functions

Hi, is it possible to implement geospatial functions (e.g. calculating distance between too points given latitude/longitude) ?Normally you would calculate the distance like: #1 2016-01-14 21:02 Hi, is it possible to implement geospatial functions (e.g. calculating distance between too points given ...

 
forum_thread

OptimisticLockException

Have read read the documentation on optimistic locks, still not sure how to deal with these exceptions: [ObjectDB 2.2.5_04] javax.persistence.RollbackException Failed to commit transaction: Optimistic lock failed for object   ... get the optimistic lock exception. ie: the version number does not appear to be automatically updated in process A. So, do ...

 
forum_thread

best practice for DB recovery

Hi, I'm trying to come up with the best approach for supporting some kind of hot standby for my master DB. ... DB running with recording and recovery enabled and have a number of applications connecting to it. I realize that I'm able to stand ...

 
forum_thread

Clarification on free license restrictions

Hello,   My apologies if the answer is already on the website, but I’m struggling to find a definitive answer.  The 10 entity class restriction is very clear, but can each of these classes use unrestricted numbers of embeddable classes?  Do embeddable classes count as part of the ten?  I assume not, but I need to check before I code further (and learn more about the product).   #1 2011-12-22 11:43 Hello,   My apologies if the answer is already on the website, but I’m struggling to find ...

 
api-jdo

javax.jdo.datastore.Sequence

Implementations of this interface can be used to obtain sequences.(Interface of JDO)

 
issue

com.objectdb.o.InternalException: java.lang.ArrayIndexOutOfBoundsException: null:

The following error appears under and extended persistence context, and with creation, configuration and wiring code that is known to work perfectly with EclipseLink+Glassfish: SEVERE: Unexpected internal exception ... state (except that this may be related to using large number of entity classes and/or sequences). Can you post a test that ... a critical bug that could corrupt databases when the total number of entity classes, indexes, and sequences is large. The workaround just ...

 
api-jpa

javax.persistence.AssociationOverride

Used to override a mapping for an entity relationship.(Annotation of JPA)

 
api-jdo

providedDoubleField(pc, field, currentValue)

The value of the field requested to be provided to the StateManager.(Method of javax.jdo.spi.StateManager)

 
issue

ODB-FileWriter holds unecessary entity reference after transaction and entity manager are closed

Hello, we've encountered a problem leading to memory leaks. We found that after closing a transaction (including the entity manager) the ODB file writer still holds a reference to entities. Performing similar calls repeatedly hence increases the number of references to entities not longer needed in the application context. This prevents the garbage collector from cleaning up the memory which eventually results in memory leaks. The attached screenshot shows an example of this behaviour. Thanks in advance for your help. ... Performing similar calls repeatedly hence increases the number of references to entities not longer needed in the application context. ...

 
page

ObjectDB License Agreement [ver. 2.0.4]

... free edition of the Software includes restrictions on the number of classes and objects in a database files. The full edition of the ...