that previous example code was too complex... phew it was a late night
this a simpler example of the a method that does a rollback when a
NoResultException is thrown.
even if the exception is handled it doesnt matter the txn is rollback and no
commits are done.
if the NoResultException is NOT thrown the method commits correctly.
is this voodoo or something?
@Transactional( propagation=Propagation.NOT_SUPPORTED)
public void txnMethod( Collection<Long> list) throws
ApplicationExecption{
for (Iterator<Long> iterator = list.iterator(); iterator.hasNext();)
{
Long fbId = iterator.next();
PositionUser user = null;
final Query query =
em.createNamedQuery(PositionUser.FIND_BY_FB_ID);
query.setParameter("facebookId", fbId);
try {
user = (PositionUser) query.getSingleResult();
}
catch (NoResultException e) {
log.info( "error occured:" + e.toString() );
}catch (NonUniqueResultException e) {
throw new ApplicationExecption(e);
}
if(user!= null) {
user.setAccuracy(5000);
em.merge(user);
}
}
}
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