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Re: [eclipselink-users] em.merge() ignore.
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If I understand EntityManager#merge(Object) correctly it just merge
the Object with eclipselink but do not any database operation.
To persist the changes you have to use EntityManager#persist(Object),
thus eclipselink do update the already existing entry in the database.
Hope that helps and please correct when I'm wrong ;)
-- Christian
2011/4/20 José Arcángel Salazar Delgado <arcangel.salazar@xxxxxxxxxxxxxxxxxx>:
> Hello.
>
> I'm having some troubles with a estrage behaviour. This is my flow:
>
> 1.- Get a List of objects of a determinate type.
> 2.- modify one atribute of the object.
> 3.- make a for each and do em.merge(object).
>
> Unfortunately the em.merge is ignore (I kwno that because in the logging of
> eclipselink I never see and UPDATE statement). If instead I use a JQPL update
> query to do the modification, every thing works as espected.
>
> My question, what error or problem can affect the em.merge to not work
> silently (no exceptions are throws)??
>
> These methods worked well until I add to String atributes to the object.
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