Status: Accepted
Owner:
[hidden email]
Labels: Type-Feature Priority-Medium
New issue 110 by
[hidden email]: Running a visitor over configuration
http://code.google.com/p/metacello/issues/detail?id=110What we exchanged on the mailing list:
On 02/18/2011 08:10 AM, Alexandre Bergel wrote:
Hi!
Is there a way to run a visitor over a graph of dependent configuration?
If no, would it be difficult to have?
Cheers,
Alexandre
There is no way to run a generic visitor over the graph of dependent
configurations.
The directives structure is a visitable representation of the configuration
load graph, but it doesn't have what you are looking for (I think), because
the directive builder doesn't follow paths for projects whose version is <=
the scheduled project version.
To put a generic visitor in place, you could piggyback/generalize the
directives structure builder (fetch pass).
Keep in mind that in traversing the dependent configuration structure there
are a large number of redundant paths (one of the contributing factors to
long load times in past versions), so quite a bit of bookkeeping is
necessary to avoid traversing the same path over and over again ... Having
been this route multiple times already I would lean towards adding the
necessary information to the directive structure.
Dale
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