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How to use JOIN FETCH?

The ObjectDB manual (http://www.objectdb.com/java/jpa/query/jpql/from) gives an example of using JOIN FETCH to avoid excessive round trips to the database: SELECT c FROM Country c JOIN FETCH c.capital I've tried a few variants of the following example, and haven't been able to get this to work
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IDs of Entities suddenly became UUIDs?

they always have a myId of zero!? We are NOT manipulating the id manually in any way so I don't have a clue
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Insert time increases as db grows.

enhancer manually on classes, but still getting the same results: insertion time grows as db grows. I've
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Insertion Speed Rate and Batch Load

per transaction. This is explained in the Storing JPA Entity Objects page in the manual. Attached a modified
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Integration

, The Spring manual specifies 3 methods for JPA integration and it seems that you are right
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Issue with DISTINCT Select

will have yet another overhead manually iterating over the resultset and extracting the first part of each
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java.lang.ClassCastException: CriteriaQueryImpl cannot be cast to java.util.List

= query.getResultList(); For more details see this manual page. Please delete me Please follow
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java.sql.Date equals comparison not working with CriteriaAPI

my manual query string i do something like: $1.eintritt = {d '2013-11-01'} Any ideas
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Jboss 6 persistence.xml startup error

) and later, if necessary, edit the persistence.xml file manually, following the attached sample file. Use
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JBoss 7 startup fails

, edit the persistence.xml file manually, following the attached sample file. For example