On 12/03/14 11:32, Rob Vesse wrote:
Andy
Is there a way to choose the TDB reordering strategy when using the TDB
command line tools or is it only configurable by placing the relevant .opt
file in the database directory?
Rob
Rob,
Only via an .opt file at the moment. fixed.opt means it's as the queyr
is written.
What's more, the new(er) reorder/filter code in ARQ does not work with
TDB yet (it gets switched off) and the old TDB code applies. So TDB's
optimization of FILTER is less general and the order of BGPs if rdf:type
is involved can (not often) be less than ideal.
Work-in-progress - I don't want to kludge it now then have to redo that
when a rework TDB execution/optimizer is ready. Making changes is easy
enough - testing is time consuming. The new execution framework is
mostly (ha!) written and partially tested.
Did you have anything particular in mind?
Andy
