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how to query by properties of onetomany relations? (Error 990)

> [ObjectDB 2.2.4] Unexpected exception (Error 990)   Generated by ... about the error message - it should be replaced by a more descriptive error message in future versions. ObjectDB can enforce using standard JPQL by setting

Master database switching to read-only mode, possibly caused by slave failure

databases have failed, slave became unresponsive and the master switched to read-only mode. By the look ... ) .............................................................. Caused by: com.objectdb.o.UserException: Connection ... .odb' is closed by 30752@hardhead We did not see anything wrong in the monitoring data

UserException: Package com.example.model is not found by the enhancer

: Package com.example.model is not found by the enhancer It occurs on this line:by different class loaders and the Enhancer do not have access to the classes. Enhancing by invoking the Enhancer from the application (as demonstrated in your post

Group by date / time

grouped by year / mont / day. Each entity has it's own field that holds java.lang.Date ... GROUP BY YEAR(record_date), MONTH(record_date) or maybe something like this: SELECT COUNT(id) FROM stats WHERE YEAR(record_date) = 2009 GROUP BY DATE

Need help to analyse very high memory usage by objectdb (PRU, SEV, VAL[])

a "GC overhead limit exceeded" exception. Nearly 90% of the memory are taken by com ... /domain/objectdb.com Forum Thread Need help to analyse very high memory usage by objectdb objects (PRU, SEV, VAL[]) has been created. btc_es BTC EmbeddedSystems This may be caused by

Extending model by "common entity"

.Thread.run(Thread.java:662) [na:1.6.0_22] Caused by: java.lang.ClassNotFoundException: pl ... Lukasz Walkowski This schema change should be handled by ObjectDB - so the exception is unexpected. Maybe you have to restart the server (I see that the stack trace is generated by

Bug: ClassCastException by retrieval

; tNode tn3 = em.find(tNode.class, 1);   System.out.printf("find by retrieval : %s %n",tn3.getTa ... , l, d, 2] [H, e, l, l, o, W, o, r, l, d, 2] find by retrieval : H Arrays : [H, e, l, l, o, W, o

JPQL support for mapped by (inverse) collections

, collection operators and methods (IS EMPTY, SIZE, MEMBER OF, IN) are currently not supported for mapped by (inverse) collections. These operations are supported for direct (not mapped by) collections. Navigation and JOIN is supported for both direct and mapped by collections.

InternalException caused by OOM: Metaspace

; Generated by Java HotSpot(TM) 64-Bit Server VM 1.8.0_05 (on Mac OS X 10.9.5). Please report ... :386) and the next part: Caused by: java.lang

Lazy retrieval by access not working correctly

I have a problem loading lazy associations by access/navigation with an @Embedded attribute containing an @ElementCollection which is lazy loaded.  I'm not sure if the same problem ... loaded by default private Map<Locale, LocalizedValue> values; ... } @Stateless public class