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Posted to users@jena.apache.org by Steve Vestal <st...@galois.com> on 2023/06/14 12:38:37 UTC
Performance of rebinds after multiple changes?
The help pages say a rebind will happen automatically when things are
added or removed to an OntModel (except odd cases). I'm curious about
the performance impact when a sequence of multiple changes are made. Is
the rebind itself fast, so a sequence of changes and rebinds has no
significant performance impact until the next request for information?
If not, would Model add(Statement[] statements) and Model
remove(Statement[] statements) do a single rebind for a batch of changes?
Re: Performance of rebinds after multiple changes?
Posted by Dave Reynolds <da...@gmail.com>.
Hi Steve,
On 14/06/2023 13:38, Steve Vestal wrote:
> The help pages say a rebind will happen automatically when things are
> added or removed to an OntModel (except odd cases). I'm curious about
> the performance impact when a sequence of multiple changes are made. Is
> the rebind itself fast, so a sequence of changes and rebinds has no
> significant performance impact until the next request for information?
Yes, rebind() is very cheap, it just sets a flag (or rather unsets the
isPrepared flag). So it's not until the next query that the work will be
redone.
Dave