| RE: [higgins-dev] Re: IdAS questions |
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I agree with all of this. It brings up a good point. It maybe be likely that we end up with enough "features" in IdAS that very few context providers will support all of them. We also should think of how we want to do "feature" advertisement/discovery. It would be a shame to force people to call a method and get back a NotImplementedException, when in stead they should be able to ask whether or not the context supports a given feature.
Jim
>>> "Paul Trevithick" <paul@xxxxxxxxxxxxxxxxx> 11/22/06 8:21 AM >>> Jim wrote: [...] > > >3. I propose to add some methods (like as begin(), commit() and > rollback()) > >to IContext for transaction support. > > We should continue this discussion -- it looks like some decisions were > made at the F2F. I just added some more conclusions here (http://wiki.eclipse.org/index.php/11.16.2006_F2F_Outcomes#More_conclusions) that I'd forgotten to write up earlier. On this particular topic I wrote: * We should not add any of these methods because implementing them in ALL Context Provider implementations is, for some kinds of contexts, somewhere between extremely difficult and impossible. * It was proposed and agreed that all IdAS method calls should be considered atomic (succeeded or threw an exception (no other outcomes)). This was as far as we should go. This was a necessary condition for potential future support for transactions. However, I agree that we should continue the discussion. A half-way option that I'm starting to favor is to add these methods to an OPTIONAL interface (e.g. IContextTransaction) that provider implementers may implement if they wish to. > > >4. IContextFactory interface extends IHasMetadata interface. What is a > >purpose of this interface and how should we implement it? > > I really don't remember why we added metadata to the factory. Maybe we > should remove it and wait for a real use-case to arise. What do others > think? +1 _______________________________________________ higgins-dev mailing list higgins-dev@xxxxxxxxxxx https://dev.eclipse.org/mailman/listinfo/higgins-dev |