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Re: DofMapSet design

 

On Mon, Jun 16, 2008 at 09:46:23PM +0200, Martin Sandve Alnæs wrote:
> 2008/6/16 Anders Logg <logg@xxxxxxxxx>:
> > On Mon, Jun 16, 2008 at 07:06:20PM +0200, Martin Sandve Alnæs wrote:
> >> I think DofMapSet should be independent of the form it was initialized with.
> >> I believe the sharing of a single set of dofmaps among different forms is one
> >> of the key tasks of this class, and that the vector with form argument dofmaps
> >> should rather be obtained on demand:
> >
> > Agree.
> >
> >>   // Get vector of dofmaps (possibly not unique) for each argument of form
> >>   dofmapvector = dofmapset.getDofMaps(form);
> >
> > What does this function do?
> 
> Gets a vector<DofMap*> with length equal to form.rank() +
> form.num_coefficients(),
> where each DofMap* is the same if the signature is the same.
> In other words, constructs and returns what is currently a member:
> 
>     // Array of dof maps for current form
>     std::vector<DofMap*> dof_map_set;
> 
> but on the fly for a given form such that DofMapSet isn't
> associated with any particular form.

ok, now I understand what you mean. But I would suggest

  DofMap& dof_map = dofmapset.extractDofMap(form, i);

Or are we going to pass around Arrays of DofMaps?

-- 
Anders

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