Hello Lisandro,
What I don't see is how you are retrieving the persisted object from the
database.
What does "unTorneo.getEquiposTorneo()" do?
Using JDO, I'm used to working with a PersistenceManager object and writing
transactions with a template like this...
// inject the PersistenceManager dependency
private final Provider<PersistenceManager> pmp;
....<snip>
PersistenceManager pm = pmp.get();
try {
pm.currentTransaction().begin();
MyObject my = pm.getObjectById(MyObject.class, myId );
// update object here
pm.currentTransaction().commit();
} catch (javax.jdo.JDOObjectNotFoundException e) {
//
logger.warning( "Object not found - id=" + myId );
pm.currentTransaction().rollback();
} finally {
if (pm.currentTransaction().isActive()) {
logger.severe("Database exception!! - id=" + myId );
pm.currentTransaction().rollback();
}
}
On Thu, Dec 30, 2010 at 4:43 AM, lisandro <[email protected]> wrote:
> Hi! Ikai, I have tried but it me did not work:
> I have tried but it me did not work.
> The modified code:
>
> tx.begin();
> JDOHelper.makeDirty(unTorneo.getEquiposTorneo(),
> "equiposTorneo");
> List<Equipo>listEquipos = unTorneo.getEquiposTorneo();
> unTorneo.setEquiposTorneo(listEquipos);
> unTorneo.agregarEquipo(unEquipo);
> pm.makePersistent(unTorneo);
> tx.commit();
>
> Thanks!
> Regards
>
> On Dec 29, 4:58 pm, "Ikai Lan (Google)"
> <[email protected]<ikai.l%[email protected]>
> >
> wrote:
> > Objects are re-persisted if there are any fields that are marked "dirty".
> > Sometimes, when you add objects to a collection property, since the
> property
> > reference may not be marked "dirty", it will not be repersisted when the
> > PersistenceManager is closed. You can either:
> >
> > 1. Call JDOHelper.makeDirty(entity, field) to mark the field as dirty
> > 2. Create a new, equivalent collection and point the equipos reference to
> it
> > 3. (98% sure this works) Change a value in another property, causing the
> > entire Entity to be persisted (App Engine entities are persisted whole,
> not
> > piecemeal as you might do in a relational database)
> >
> > --
> > Ikai Lan
> > Developer Programs Engineer, Google App Engine
> > Blogger:http://googleappengine.blogspot.com
> > Reddit:http://www.reddit.com/r/appengine
> > Twitter:http://twitter.com/app_engine
> >
> >
> >
> > On Wed, Dec 29, 2010 at 6:53 AM, lisandro <[email protected]> wrote:
> >
> > > lisandrodc
> > > View profile
> > > More options Dec 29, 11:26 am
> > > Hi! I have a problem with the persistence of an existing object
> > > "Torneo" (with a empty collection of objects "Equipo").
> > > When I add elements to the collection and want to persist,
> > > sometimes persist and sometimes not persist in the
> > > datastore(Restarting the server of the application). The code of
> > > example:
> > > public void agregarEquipoConTorneo(Torneo unTorneo, Equipo unEquipo)
> > > {
> > > /*add Equipo with a existing "Torneo" in the
> > > datastore, the "unTorneo"(param) class obtain with:
> > > Torneo b =
> > > pm.getObjectById(model.Torneo.class, idTorneo);*/
> > > Transaction tx = pm.currentTransaction();
> > > try {
> > > tx.begin();
> > > unTorneo.agregarEquipo(unEquipo);
> > > //add unEquipo to collection "equipos"
> > > pm.makePersistentAll(unTorneo);
> > > tx.commit();
> > > System.out.println("persistioTorneoConEquipo");
> > > } finally {
> > > pm.close();
> > > if (tx.isActive()) {
> > > tx.rollback();
> > > }
> > > }
> > > Does it design someone of what this one happening?
> > > Thanks!
> > > Regards
> > > Lisandro
> >
> > > --
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>
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--
-- A. Stevko
===========
"If everything seems under control, you're just not going fast enough." M.
Andretti
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