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BigScreen - Fixed retrieval of latest available QO #2081
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why
objectValidity.getMax() - 1in particular?There was a problem hiding this comment.
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@knopers8 honestly I simply used the same logic as in the
newObjecttrigger for the object's time stamp (see here).If there is a better choice just let me know. Thanks!
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Thanks. There,
max-1is used because it is the max timestamp that one can use to access the object. In the case of the trigger, I use it because it makes the most sense as a timestamp of data points on trending plots.In your case, I am wondering if using
"Created-At"instead of"Valid-Until" - 1could make more sense. If we use the first, you will consider an object as too old if it was not updated recently. If you use the latter, a regularly updated object, but with no new data since some time (max validity does not move)will not be considered as too oldwill be considered as too old as well. Personally, I am OK with both alternatives, so I think it's up to you.There was a problem hiding this comment.
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For the purpose of the BigScreen, I think it is useful to also identify the cases where an object is regularly updated but no new data is actually received, and show it as grey if the last new data is too far in the past. What do you think?
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Yes, indeed, this is something that shifters should be aware of.
So the algorithm would be:
now - created > x, consider the object as invalid, use an appropriate colour in the displaynow - validity_end > yconsider the object as invalid, use an appropriate (different) colour in the display.I would keep
xandyas different parameters in case we want to tune them separately. After all, there is always some latency between the validity end and the object publication time.Colour could be also different between the two, so it is clear which of the two cases we encounter.
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That's a very good suggestion! We can extend the logic in a separate PR, for example:
now - created > x(the processing is not creating new QOs)now - validity_end > y(processing creates new QOs, but from the same old data)