Java Reference
In-Depth Information
createRandomOption ( sp . getSymbol , sp . getDate ());
em . persist ( sop );
}
}
curDate . setTime ( curDate . getTime () + msPerDay );
}
txn . commit ();
em . close ();
}
}
Similar to what was observed using transactions in JDBC, there are efficiency trade-offs here
between the frequency of committing the transaction versus the natural transaction boundar-
ies. Some timings for this example are included in the next section.
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