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1

Navigation to Collection Elements

] ? If such navigations in queries lead to performance penalty, how slow is it and would you recommend
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Objectdb EntityManagerFactory problem

an EntityManagerFactory is relatively slow. It is usually better to use one EntityManagerFactory
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Performance issue in a query due to compareTo calls

Hello, we have a question again regarding query performance. The query: SELECT v FROM Values v WHERE v.step.stepNumber = ? is very slow in comparing to the query: SELECT v FROM Values v WHERE v.stepNumber = ? Can you explain why the first query needs so much time or do you have a hint
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Performance issue with query

why this specific query execution became slower. This query is indeed slow with build 2.7.6_08 as reported
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query.getResultList() throws ClassCastException

'id' before 'commit'.  This caused the ID lookups on non-existent entities to be "slow
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Remove a modified entity cause an optimistic lock exception

your question, but the size of the OSGI test case makes progress very slow. Thanks for writing a minimal
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Selective merge/cascade of detatched entity

to this with me, Phil Thank you for the test program. It definitely demonstrates activity that is too slow
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Should I be able to persist a JFrame (or gui components in general)?

" interfaces like this, so that I am not spending a long time (I'm slow) programming what I'll call "mapping
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Should I use ObjectDB and JDO?

than JPA because I am storing objects to avoid apparent relative slowness of relational databases).  I want
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100% CPU when using multiple BETWEEN

/objectdb/SystemDB.odb It is a 1GB file. Best regards Emil Thanks. Download is very slow