In Cayenne 3.x you can create expression from string: Expression.fromString("paintings+ = null")
On Mon, Feb 4, 2019 at 12:30 PM Amedeo Mantica <amedeomant...@me.com.invalid> wrote: > in Cayenne 3.x ? > > > On 4 Feb 2019, at 09:17, Arseni Bulatski <abulat...@objectstyle.com> > wrote: > > > > Hi > > You can do it in that way: > > Artist.PAINTINGS.outer().isNull() > > > > > > > > On Sun, Feb 3, 2019 at 10:19 PM Amedeo Mantica > <amedeomant...@me.com.invalid> > > wrote: > > > >> Hi all, > >> > >> Which is the correct Expression to use in order to select objects thats > >> have an 1:many relationship empty ? > >> > >> Thank you > >> Amedeo > >