Daniel,
I believe this is the same cause: we normally send an event whenever a
resource is renamed, and this event is used bby the snapshot manager to
update references to a renamed resource. But changing the base URI is
probably not sending out this event, and therefore the snapshots (which
reside in a different data structure and file) don't get updated.
Thanks,
Holger
On 5/8/2012 5:34, Daniel Mekonnen wrote:
Thanks Holger,
I wasn't aware of the attachment aspect. I went back to my ontology
and change the base URI back what it was originally and all of the
saved snapsots reappeared! Several hours of work recovered, I'm very
happy. I should have tried that sooner.
I did another test that you'll want to be aware of when you work on a
bug fix for the first problem, it impacts graph snapshots attached to
a resource following a base uri change. The formula:
1) Create a new ontology, give the Base URI: http://test.foo
<http://test.foo/>
2) Create the namespace prefix: test: http://test.foo#
3) Create two subclasses of owl:Thing: test:Thing_1 , test:Thing_2
4) Load test:Thing_1 into the Form view
5) Go to the Graph view, drag in test:Thing_2
6) Click "Add to snapshots", give the name "Test" (verify) . The
graph snapshot should be attached to test:Thing_1
7) Return to the ontology "Overview" tab and change the Base URI to
http://test.foo/bar
8) Return to the Graph View and select "Test" from the Snapshot
dropdown menu. The graph view will now appear very differently [This
is the Bug].
9) Return to the ontology "Overview" tab and reset the Base URI to the
original http://test.foo
10) Return to the Graph View and select "Test" from the Snapshot
dropdown menu. The graph will appear OK, as per the original definition.
thanks,
-Daniel
On Monday, May 7, 2012 12:29:51 AM UTC-4, Holger Knublauch wrote:
Thanks, Daniel. Recorded. Graph snapshots are attached to the
selected
resource, and I guess in this case TBC does not handle renaming the
owl:Ontology itself (base URI) correctly. Work around is to attach
the
snapshots to other resources.
Holger
On 5/7/2012 3:45, Daniel Mekonnen wrote:
> I experienced a problem where saved graphs in the Graph View can
> disappear unexpectedly. A formula to reproduce:
>
> 1) Create a new ontology, give the Base URI: http://test.foo
>
> 2) Go to the graph view, drag in owl:Thing
>
> 3) Right click the right side of the owl:Thing rectangle and
select "All"
>
> 4) Click "Add to snapshots", give the name "Test" (verify by
checking
> for "Test" in the drop down menu).
>
> 5) Return to the "Overview" tab and change the Base URI to
> http://test.foo/bar
>
> 6) Return to the Graph View, click the dropdown menu for snapshots,
> "Test" will be gone.
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