About ORDER BY

91-100 of 200Refresh
Forum
10

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

)   Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_23 (on Windows 7 6.1). Please report this error ... about the error message - it should be replaced by a more descriptive error message in future versions ... but it is JPA portable. ObjectDB can enforce using standard JPQL by setting the following query hint
Forum
10

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

, slave became unresponsive and the master switched to read-only mode. By the look of it the slave ... .java:240) .............................................................. Caused by: com.objectdb.o ... : [2012-04-04 19:25:59 #4 store] Database '/opt/objectdb/db/$replication/contextspace.odb' is closed by
Forum
10

Extending model by "common entity"

] Caused by: java.lang.ClassNotFoundException: pl.hplxtool.model.BaseEntity at com.objectdb.o.TYM ... . 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 the server). If it doesn't help
Forum
10

Group by date / time

Hi, I'm trying to create reporting query that will return entities grouped by year / mont / day ... stats WHERE YEAR(record_date) = 2009 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
Issue
10

JPQL support for mapped by (inverse) collections

, 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. The following test case demonstrates a problematic query
Forum
10

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

exceeded" exception. Nearly 90% of the memory are taken by com.objectdb.o.PRU (49%) com.objectdb.o.SEV ... Forum Thread Need help to analyse very high memory usage by objectdb objects (PRU, SEV, VAL[]) has been created. This may be caused by large insert / update transactions, with large amount of data
Forum
10

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

get the exception: com.objectdb.o.UserException: Package com.example.model is not found by ... ?   It may be a class loader conflict, i.e. the Enhancer and your classes are loaded by different class loaders and the Enhancer do not have access to the classes. Enhancing by invoking the Enhancer from
Forum
10

a second mapping-file is ignored in persistence.xml by enhancer

> We start the enhancer and the entities of orm.xml will be enhanced by following output: enhancer ... will be enhanced by following output, because the enhancer is apparently ignored the ormreq.xml
Forum
10

Bug: ClassCastException by retrieval

("find by retrieval : %s %n",tn3.getTa()); System.out.printf("Arrays : %s %n",Arrays.toString(tn3 ... , l, l, o, W, o, r, l, d, 2] find by retrieval : H Arrays : [H, e, l, l, o, W, o, r, l, d, 2
Forum
10

Getting java.lang.ArithmeticException: / by zero

ava.lang.ArithmeticException: / by zero at com.objectdb.td.remove(td.java:131) at com.objectdb.af.VW ... which is being used is 2302.  Regards, Binit Bhaskar This division by zero occurs in some hash table