[Dune] How to implement Grid without EntityPointer

[Aleksejs Fomins]

Dear Steffen,

I assume you are talking about feature/FS1511-deprecate-entitypointer

Sorry for naive question, but how do I access this data?

Cheers,
Aleksejs

On 12/19/2014 12:56 PM, Steffen Müthing wrote:
> Hi Aleksej
> 
> Am 19.12.2014 um 12:47 schrieb Aleksejs Fomins <aleksejs.fomins at lspr.ch>:
> 
>> Dear Dune,
>>
>> Since EntityPointer has now been depreciated, and we are writing a new
>> Grid which will see light within the next few months, it seems sensible
>> to us to avoid using EntityPointer from the very beginning, that is to
>> completely remove it from the new grid.
>>
>> Do you think this is sensible?
>>
>> If yes, we would appreciate some suggestions on how to change the Grid
>> architecture, such that EntitySeed is used instead. Quick look at the
> 
> No, the EntitySeed is something different (it’s a handle that the grid can use to recreate
> the associated entity). Basically, when you remove the EntityPointer, you move all information
> that used to be stored in the EntityPointer into the Entity.
> 
>> current architecture of the GeomGrid suggests the following problematic
>> spots (hope I have not missed much)
>>
>> Entity.subEntity()     returns entityPointer
>> Entity.father()        returns entityPointer
>> Grid.entityPointer()   returns entityPointer
>> Intersection.inside()  returns entityPointer
>> Intersection.outside() returns entityPointer
>> Iterator class is derived from entityPointer, as well as its Traits
> 
> take a look at FS1511 for some lengthy discussions on the topic. It also contains a reference
> to a feature branch where EntityPointer has been removed from most of the grids in dune-grid.
> 
> Steffen
> 
>>
>> Best,
>> Aleksejs
>>
>> _______________________________________________
>> Dune mailing list
>> Dune at dune-project.org
>> http://lists.dune-project.org/mailman/listinfo/dune
> 

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