[Paraview] Multiple identical "sources" proxies in a saved XML state file (GlyphType)

[Utkarsh Ayachit]

Artem,

You raise good points. In reality, only saving the state of the
currently selected proxy from proxy-list domain should be sufficient.
There are challenges to doing that given the current implementation,
however. Let me try to figure out a viable solution and get back to
you.

Utkarsh

On Fri, Jan 26, 2018 at 6:51 AM, Artem Bodrin <art.bodrin at gmail.com> wrote:
> Hello, dear developers.
>
> I have issued this question on a bug tracker, but will duplicate it here, if
> you do not mind
> https://gitlab.kitware.com/paraview/paraview/issues/17957
>
>
> I'm not sure if this is a bug, but I have noticed, that saved xml state file
> contains many identical proxies, that belongs to group "sources". These
> proxies are actual source proxies, and participating in property  of every
> saved "GeometryRepresentation" proxy.
>
> So every "GeometryRepresentation" have it's own bunch of GlyphType source
> proxy instances (listed in proxy_list Domain), and all of them are saved to
> a state file.
>
> I can understand, that saving all of them can be explained by "unified
> approach" to saving proxy to state file, but I have trouble with resulting
> state file - we tracking it's change with VCS (git, if it matters), and so
> many unnecessary (cause they are identical, except GlobalId) proxies saved
> gives us additional pain.
>
> As an additional side effect we have increased state loading time. This
> issue might be related to appearance of saved GlyphType proxies in a state
> file:
> https://gitlab.kitware.com/paraview/paraview/issues/17768
>
> Please, correct me if I'm wrong, but one can not change the Domain type at
> runtime, so this proxy_list will be constant until changed in a
> views_and_representations.xml. If so, than maybe there is a way to save
> GlyphType proxies to state file only once (or not at all) and reference
> their GlobalIds from any other GeometryRepresentation?
>
> Thanks in advance,
> Artem Bodrin.
>
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