Hi!
Rob Miller wrote:
i'm pretty much in support of the proposal as it's evolved so far.
I'm not.
here's my understanding of it at this point:
- the import step registry will record the profile from which a given
import step is included. if multiple profiles include the same step in
their import_steps.xml, they will both be recorded as related to that
import step.
What means "same step"? Step with same handler, same ID, same version,
same title or same description? I guess you mean same handler, but what
about the other metadata? Which profile has the 'right' metadata?
- when a profile is imported, only the import steps from the base
profile and all transitively dependent profiles will be run. (clearly
this depends on actually finishing the dependency support.)
- when a profile is exported (or a snapshot is generated), all of the
registered steps will be used.
this way, a naively coded import handler can only cause a problem when
the profile it is associated with (or any other profile that explicitly
depends on the problematic profile) is run. writing imperative handlers
should still be discouraged, but the damage that they can cause is
contained.
I'd prefer it if naively coded import handlers always cause problems -
this way the problems are easily identified and fixed.
A global handler registry is *much* simpler. It allows to remove a lot
of code instead of making things even more complex than they already are.
Cheers,
Yuppie
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