[Seaside] Bug in Set backtracking
avi.bryant at gmail.com
Wed Oct 19 17:26:06 UTC 2005
On Oct 17, 2005, at 8:40 PM, David Shaffer wrote:
> I've been having problems with the WATree component and tracked it
> to the snapshotCopy mechanism performing only a shallow copy of the
> used to track expanded nodes. Maybe this has been fixed in later
> Seaside/Squeak versions but as of Seaside2.5/Squeak3.7 this doesn't
> work. Attached are a test case (and component) which demonstrate the
> problem and a fix. I'll post the fix to the Seaside MC repo unless I
> hear that there is a problem with it...
> !Set methodsFor: '*seaside2' stamp: 'cds 10/17/2005 23:30'!
> ^self copy! !
I'm pretty sure that you also need to override #restoreFromSnapshot:
to do a full #copy as well. Otherwise after a restore, the
snapshot's internal state will #== the original's internal state, so
that when you backtrack a *second* time you'll have issues.
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