ianibbo
commented
8 years ago The screencast is really great!!! very helpful, thankyou.
I think the system is doing what it thinks is right - tho that might not be the right thing of course - This is whats happening
[Lets call this change A] "Physica B: Condensed Matter" was created when Physcia B+C was split into "Physica B: Condensed Matter" and "Physica C: Superconductivity" - this is one "Change" record in the title history.
We also know that
[Lets call this change B] Physica was split into "Physica A: Statisitcal mechanicx..." and "Physica B+C"
When we view the record for "Physica B: Condensed Matter" the system tries to construct a title history display. It does this by walking though all the title history events, then sorting them into date order.
in this case: The first hop is easy - We're looking at "Physica B: Condensed Matter" and we know that this title participated in change A. From there, the system says "Did anyone involved in change A have change records associated with them?". It turns out that Physica A+B (The title which was split to create the record we are currently looking at) was also involved in title change B, so that record is also listed in the title history.
Once we delete Change A there is no path in the title history that lets us link to Change B (Because Physica B: Condensed matter never directly participated in Change B). So, by deleting change A, we've broken a link that lets us trace the lineage of the title history.
Once we re-create the link, the system can re-detect the link and re-fill in the full title history.
Sorry - not sure I'm helping :/ Think of it this way
We have a title history A -> B,C B -> D,E E->F F-G
And we have a title H with no title history
When we look at record H, we see no title history. I happen to know that H was created when title G was split into H and I, so I go and add that 1 title change.
At that point, when I go to see the title history for title H, I will suddenly see the full history from A through to H. Similarly, and perhaps counter intuitively, if I go to look at the record for I, I'll see the full title history, even though I have not edited the title history there.
The reason for this is that title history events are separate to the title records themselves. We edit them on the title screen, but they actually sit on their own as a link between two or more titles participating in a change record...
Does that make sense / sound right to you? How should we deal?
Cheers, Ian.
Ian Ibbotson Director Knowledge Integration Ltd 35 Paradise Street, Sheffield. S3 8PZ T: 0114 273 8271 M: 07968 794 630 W: http://www.k-int.com Doodle: http://doodle.com/ianibbo
On 9 May 2016 at 21:10, kristenwilson notifications@github.com wrote:
When trying to delete and recreate a line of title history (to fix an error) I saw some strange behavior. When I deleted the title history line, it removed both lines on the title record. Normally, it should only delete the line selected. Then, when I recreated the the line I had deleted, the other line reappeared.
You can see a screencast here: http://screencast.com/t/YnrDfotunc9
I tried the same thing on a different title, but didn't see the same problem. When I deleted a line of title history, only the appropriate line was removed.
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ianibo
kristenwilson
When trying to delete and recreate a line of title history (to fix an error) I saw some strange behavior. When I deleted the title history line, it removed both lines on the title record. Normally, it should only delete the line selected. Then, when I recreated the the line I had deleted, the other line reappeared.
You can see a screencast here: http://screencast.com/t/YnrDfotunc9
I tried the same thing on a different title, but didn't see the same problem. When I deleted a line of title history, only the appropriate line was removed.