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@ElementCollection Set<Integer> is emptied sometimes

Hi! I'm facing a really strange behavior, which I can't yet reproduce, but it happened 3-4 times ... while schema changes, but not all the times. The interesting part is that most of the times, schema changes ... the behavior a couple of times, then I added @ElementCollection and it seemed to don't happen anymore
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Calendar in Criteria Querys

.sql.Date - representing date with no time. java.sql.Time - representing time with no date. java.sql.Timestamp - representing both data and time. If possible, you should use these types instead
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Error using query with MAX() function

I have a class that is persisting a Entity that holds remarks and a time. Then when I query ... and getting the stack trace? Here is my log output at the time of the error with log level set ... .3_04 that fixes a critical bug. Every time I remove the database and rebuild it I get an error
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Filename.odb$ Persisting Issue

. Sorry for the delay in response time - been busy with other projects. I've tested this out now ... the program in quick succession or after running it for extended time, stopping the program, and modifying code for extended time and all variations in between. There is no way to isolate the issue
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1

Index causes increased memory usage

in a cycle that involves _lots_ of database adds over a great period of time, and occasional ... at the methods occupying the most CPU time and spotted these after letting it collect data for about 20 ... profile rises steadily throughout run-time. This climb is exacerbated by heavy querying
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Insertion Speed Rate and Batch Load

] Wed May 04 01:25:45 IDT 2011 Added 1000000 objects, elapsed time: 4985ms Here is a simple program ... ();             }         }         em.getTransaction().commit();         long time = System.currentTimeMillis() - startTime;         long rate = count / time * 1000;         System.out.println("Persisted " + rate
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Integration

) that should solve this issue. Notice that in the new ObjectDB build load time weaving (enhancement) by Spring ... being applied. (as far as i know i'm not using loadtime weaving but compile time weaving with aspectj ... when i find time.) next on the agenda is effectively persisting stuff etc see what other errors i
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1

JPQL query to get entities that does not have a child entity in their child entities

entity and using TomEE for deployment. I am using following queries. FINISHED Jobs between a time ... <:timeStampAfter AND " +     "JS.status = 'Finished'" ), CANCELED Jobs between a time interval: @NamedQuery ... AND " +     "JS.status LIKE '%Failed%' AND JS.status <> 'Finished'" ), FAILED Jobs between a time interval
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1

JRebel integration feature

to save me months of development time per year, and it helps avoid a lot of frustration, enabling ... , just javaagent, compile time enhancement may offer a way ahead] Part of complex stacktrace ... , for the first time in years (I had tried JRebel many times before but the clashes with ObjectDB
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Level 2 cache not hit in @ManyToOne

"user". "user" is loaded each time from the DB (tested by changing data in explorer and reading in ... each time, even though user 5 has been previously loaded by find by id and its class is @Cacheable. Shouldn't just 6 and 7 be returned fresh (the first time, then loaded from L2 Cache each time)? I