Re: Help upgrading 3.0.2 code to 4.2.2

I just got back to my project, trying to finalize the upgrade, and I
find out there is a brand new version of Cayenne available.
I am going to try to jump directly from 3.0.2 to 5.0-M1. =F0=9F=8E=A2
Wish me luck! =F0=9F=A4=B9

Giulio Cesare

On Sat, Oct 4, 2025 at 10:29=E2=80=AFAM [email protected]
<[email protected]> wrote:
>
> Thanks Michael,
> I now need to find how to rewire what I was previously doing mostly
> using the org.apache.cayenne.conf package.
> I suppose this is part of the friction I'll have to go through to get
> a plain Jar (with Jetty).
>
> Thanks for the pointer.
>
> Giulio Cesare
>
> On Wed, Oct 1, 2025 at 9:16=E2=80=AFPM Michael Gentry <[email protected]=
m> wrote:
> >
> > Hi Giulio,
> >
> > In 4.2, you get the ObjectContext from the Cayenne Runtime:
> >
> > https://cayenne.apache.org/docs/4.2/getting-started-guide/#getting-star=
ted-with-objectcontext
> >
> > mrg
> >
> > On Wed, Oct 1, 2025 at 5:23=E2=80=AFAM [email protected] <
> > [email protected]> wrote:
> >
> > > Hello,
> > > I have been able to fix almost all the warnings and errors.
> > > I have to points that I am not able to fix, though:
> > > - I was still using DataContext (instead of ObjectContext); is this
> > > still a useful class? Otherwise, how do I create a DataContext, as
> > > `DataContext.createDataContext();` is not defined
> > > - how do I replace the use of ServletUtil.initializeSharedConfigurati=
on?
> > >
> > > Thanks,
> > > Giulio Cesare
> > >
> > > On Tue, Sep 30, 2025 at 3:50=E2=80=AFPM [email protected]
> > > <[email protected]> wrote:
> > > >
> > > > Thanks Andrus!
> > > >
> > > > I'll report on any progress with my upgrade.
> > > >
> > > > Giulio Cesare
> > > >
> > > > On Tue, Sep 30, 2025 at 2:26=E2=80=AFPM Andrus Adamchik <aadamchik@=
gmail.com>
> > > wrote:
> > > > >
> > > > > Hi Giulio,
> > > > >
> > > > > SelectQuery is replaced with ObjectSelect. But in your case (a qu=
ery
> > > modeled in the DataMap), you would actually use something else - a
> > > MappedSelect query per
> > > https://cayenne.apache.org/docs/4.2/cayenne-guide/#mappedselect-and-m=
appedexec
> > > > >
> > > > > MappedSelect.query("attachment", Attachment.class)
> > > > >     .param("reference", aReference)
> > > > >     .param("user", anUser)
> > > > >     .select(context);
> > > > >
> > > > > Thanks,
> > > > > Andrus
> > > > >
> > > > >
> > > > > > On Sep 30, 2025, at 3:15=E2=80=AFAM, [email protected] wr=
ote:
> > > > > >
> > > > > > Hello everybody,
> > > > > >
> > > > > > even if this will force me to admit how old I am, I still have =
some
> > > > > > Cayenne 3.0.2 code happily running in production with no issues=
.
> > > > > >
> > > > > > Lately I was trying to upgrade the application from a WAR (runn=
ing in
> > > > > > Tomcat) to a standalone application exposing the servlets via J=
etty,
> > > > > > in order to make the application easier to deploy in a docker
> > > > > > container.
> > > > > >
> > > > > > After some struggle to update the model, I am now facing a LOT =
of
> > > > > > deprecation warnings like this:
> > > > > >> [deprecation] SelectQuery in org.apache.cayenne.query has been
> > > deprecated
> > > > > >
> > > > > > The code I have looks like this:
> > > > > > -------------------
> > > > > > prototypeQuery =3D
> > > > > >
> > > (SelectQuery)dataContext.getEntityResolver().lookupQuery("attachment"=
);
> > > > > >
> > > > > > parameters =3D new HashMap();
> > > > > > parameters.put("reference", aReference);
> > > > > > parameters.put("user", anUser);
> > > > > > query =3D prototypeQuery.queryWithParameters(parameters);
> > > > > >
> > > > > > result =3D (List<Attachment>)dataContext.performQuery(query);
> > > > > > -------------------
> > > > > >
> > > > > > Unfortunately I never had the opportunity to use any newer vers=
ion of
> > > > > > Cayenne, so I haven't followed along with all the changes that =
it has
> > > > > > gone through.
> > > > > >
> > > > > > Is there anyone willing to suggest me what the above code snipp=
et
> > > > > > would look like with the new version of Cayenne?
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > Giulio Cesare
> > > > >
> > >