On December 2, 2009, Gary Poster wrote: > On Dec 2, 2009, at 11:41 AM, Muharem Hrnjadovic wrote: > > Gary Poster wrote: > >> On Dec 2, 2009, at 10:41 AM, Muharem Hrnjadovic wrote: > >>> Quick question: > >>> > >>> do we use the zope class registry anywhere? > >> > >> I doubt it. > >> > >>> Is it safe to use within > >>> Launchpad? > >> > >> I'd prefer to use utility registration if that can work with your use > >> case. > > > > Sorry for not being precise enough. In my particular case a number of > > classes would implement the interface in question (IBuildFarmJob). > > > > I understood the utility registration mechanism requires that there is > > exactly one class that implements a particular interface in which case I > > could not use it for the interface/purpose at hand. > > The class registry you showed had keys and values. > > You can register different utilities for the same interface by providing a > different name for each one (I think of this as a namespace). > > You can then get all of the utilities for that interface with getUtilitiesFor. From docs: > >>> sorted(components.getUtilitiesFor(tests.I2)) > > [(u'', U12(2)), (u'three', U12(3))] > > In that example, ``components`` could be obtained as follows: > > from zope.component import getSiteManager > components = getSiteManager() >
Another possibility is to use subscriptions. You can register components for the IBuildFarmJob interface and get all the registered subscribers. -- Francis J. Lacoste [email protected]
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