release-19.4:Backport!3100

Merged Andrey Vertiprahov requested to merge cherry-pick-ef0c6fd6 into release-19.4

Rebuild datastream when object or objectconnection change.

See merge request !3100 (merged)

(cherry picked from commit ef0c6fd6)

4362333d Rebuild datastream when object or objectconnection change. 98543414 Fix futurize.

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