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]) 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! -- You received this message because you are subscribed to the Google Groups "doctrine-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/doctrine-user. For more options, visit https://groups.google.com/d/optout.
