I'm just saying that all the non-local datasets need to be identified
somewhere so that their names can be looked up to support the deprecated
behavior.
On May 1, Jim Grandy wrote:
> The idea is that any attribute xpath="foo:/" is implicitly really this:
> xpath="global:foo:/".
>
> We'd introduce the "global:" so that the idiom could be made explicit.
>
> Then, in the first release, your example would be legal, but would really
> mean:
>
> <dataset name="foo" id="foo"/>
> <!-- elsewhere -->
> <datapointer xpath="global:foo:/"/>
>
> In the next release, perhaps, it would still be legal but would trigger a
> compiler warning.
>
> Then in a final release, it would no longer be legal. You'd have to write the
> explicit form.
>
> This introduces some inconvenience for folks used to using global datasets,
> but the benefit would be that there'd be more symmetry between local and
> global datasets. I think the learnability would be better too, especially with
> a more data-driven revision of the components.
>
> I'm not too attached to the idea of making the "local:" axis the default.
> Quite possibly it would be better to require that they both be explicit.
>
> jim
>
> On May 1, 2006, at 2:54 PM, Adam Wolff wrote:
>
> > do you want to change this?
> >
> > <dataset name="foo"
> > <!-- elsewhere -->
> > <datapaointer xpath="foo:/"/>
> >
> > If not, you need someplace (even hidden) where parsed xpaths can look for
> > named datasets.
> >
> > A
> >
> > On May 1, Jim Grandy wrote:
> >
> > > Yes, it would be an incompatible change. We could deprecate
> > > implicit-global in
> > > 4.0 and either remove or switch the default in a later release.
> > >
> > > What do you think of the proposal otherwise? Should we write it up more
> > > formally?
> > >
> > > On May 1, 2006, at 1:56 PM, Henry Minsky wrote:
> > >
> > > > Swapping the default for the scope
> > > > of the dataset name in the xpath query from global to local would
> > > > be a pretty incompatible change in terms of existing
> > > > code, I dunno if that would be a
> > > > 4.0 kind of thing or not.
> > > >
> > > >
> > > >
> > > > On 5/1/06, John Sundman <[EMAIL PROTECTED]> wrote:
> > > > OK.
> > > >
> > > > if this is going into 3.3 I need to get right on it.
> > > >
> > > > Just to be sure I understand this, can I see some examples please?
> > > >
> > > > jrs
> > > >
> > > > On May 1, 2006, at 3:58 PM, Jim Grandy wrote:
> > > >
> > > > > I'd be in favor of the following:
> > > > >
> > > > > - add a 'global:' axis to match the 'local:' axis
> > > > >
> > > > > - force use of @id attribute for global datasets -- that is, don't
> > > > > register in global/canvas namespace at all unless @id is given
> > > > >
> > > > > We could add the 'global:' axis in 3.3 with declaration without @id
> > > > > deprecated in that release, and then require @id for global datasets
> > > > > in 4.0. We'd also make 'global:' the default in 3.3, and 'local:' (or
> > > > > neither) the default in 4.0.
> > > > >
> > > > > I think this would be the cleanest and simplest -- @id is how you
> > > > > namebind in global namespaace, period. Just like HTML/CSS. Also,
> > > > > making 'local:' axis the default would match our move in the
> > > > > components to more data-driven design -- local datasets should be more
> > > > > common in 4.0 than global datasets.
> > > > >
> > > > > I haven't thought deeply about the compat issues here, but I think
> > > > > this is pretty straightforward.
> > > > >
> > > > > jim
> > > > >
> > > > >
> > > > > On May 1, 2006, at 9:59 AM, Henry Minsky wrote:
> > > > >
> > > > > > Tucker asked at one point if we could cut down the number of
> > > > > > different places
> > > > > > we put in a pointer to a dataset.
> > > > > >
> > > > > > We've got these three in the LzDataset.setName method:
> > > > > >
> > > > > > if ( this.oncanvas ){
> > > > > > global[ name ] = this;
> > > > > > canvas[ name ] = this;
> > > > > > } else {
> > > > > > // it's local - add the parent's UID
> > > > > > name = this.parent.getUID() + '.' + name;
> > > > > > }
> > > > > >
> > > > > > canvas.datasets[name] = this;
> > > > > >
> > > > > > Would this be a good time to clean this up a little and pick one (or
> > > > > > two) of the these choices?
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Henry Minsky
> > > > > > Software Architect
> > > > > > [EMAIL PROTECTED]
> > > > > >
> > > > > > _______________________________________________
> > > > > > Laszlo-dev mailing list
> > > > > > [email protected]
> > > > > > http://www.openlaszlo.org/mailman/listinfo/laszlo-dev
> > > > >
> > > > > _______________________________________________
> > > > > Laszlo-dev mailing list
> > > > > [email protected]
> > > > > http://www.openlaszlo.org/mailman/listinfo/laszlo-dev
> > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Henry Minsky
> > > > Software Architect
> > > > [EMAIL PROTECTED]
> > > >
> > >
>
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