I've added class B to the discriminator map so now I have
inheritanceType: JOINED
discriminatorColumn:
name: type
type: string
discriminatorMap:
B:B
C:C
D: D
E: E
Obviously no record has the B type. The problem now is that if I run the
DQL query to get B-type records I get an empty array while there is one item
that is child of B that is not retrieved.
What am I missing?
Il giorno giovedì 4 dicembre 2014 23:41:51 UTC+1, Jàπ (Jasper N. Brouwer)
ha scritto:
>
> If you want to be able to filter on "instanceof B", you'll need to add B
> to the discriminator map.
>
> If class B is in fact an abstract class, you won't be able to instantiate
> it, so you can't persist it, so it will never reach the database, so
> Doctrine cannot find and hydrate it. In other words: you're safe adding it
> to the discriminator map.
>
> --
> Jasper N. Brouwer
> (@jaspernbrouwer)
>
>
> On 4 December 2014 at 18:32:24, Stefano Angaran ([email protected]
> <javascript:>) wrote:
> > Hi all,
> > I'm using Doctrine for my project and all is fine but I've encountered a
> > problem when trying to implement a three levels class hierarchy.
> >
> > I had a two levels hierarchy but now I need to implement an extension to
> my
> > model and add an additional level to one of my classes,
> >
> > The initial situation was like B and C inherit from B, now there is D
> and E
> > which inherit from B. I want to implement this using Class Table
> > Inheritance as this was the initial choice. B is now an abstract class
> as
> > it cannot be instantiated alone.
> >
> > I can make it almost work by setting the discriminator map in the top A
> > class but when I use the A repository I'm not able to search
> > only instance of B now, I can only look for instance of D o E.
> >
> > If I use this DQL
> >
> > SELECT root FROM A root WHERE root INSTANCE OF B
> >
> > I get exception
> >
> > Cannot check if a child of 'A is instanceof 'B', inheritance hierarchy
> > exists between these two classes.
> >
> > My mapping information is in Yaml format:
> >
> > inheritanceType: JOINED
> > discriminatorColumn:
> > name: type
> > type: string
> > discriminatorMap:
> > C:C
> > D: D
> > E: E
> >
> > Can you help me, please? If you need something else to better understand
> > this let me know!
>
>
>
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