Re: [rules-users] Planner 5.3.Final - "presumedScore is corrupted" when using "update" on the rules working memory
Op 30-11-11 01:11, guyramirez schreef:
I am looking into Planner for a schedule assignment business case.
I created a move factory, got the local search phase set up and quicly ran
into a "presumedScore is corrupted because it is not the realScore" error.
As a work around, I changed my Move::doMove(..) implementation to "retract"
then "insert" rather than "update" the new updated planning entity
and the
issue went away.
That's a hack.
It will probably reduce the effect of delta score calculation (see
manual), also called incremental score calculation.
Then I worked on setting a construction heuristic and I again ran
into the
same error. By applying a local code patch to the
PlanningValueWalker::changeWorkingValue(..) method to also "retract" and
"insert" rather than "update" also fixed the issue.
There the
hack breaks. Don't do that hack :)
I also tried to correctly implement the hashCode() and equals(..)
methods on
my planning entity (as mentioned in Drools Expert documentation) as well as
use the default implementation of those methods (as in the nurse rostering
example) with the same unsuccessful results.
I must mention than I am able to run the nurse rostering example without any
issues.
Could someone maybe point me to the right direction on why "update" does not
work for me? I can provide detailed information if needed.
There's a bug in
your undoMove method or in one of your score rules.
You're not the only one running into this, so Planner 5.4 will improve
this in 2 ways:
- Writing Move's and MoveFactory's will become optional: out-of-the-box
several good implementations will be included
- Planner's "presumedScore is corrupted because it is not the realScore"
exception should analyse and clearly list what could be wrong.
https://issues.jboss.org/browse/JBRULES-3301
Meanwhile, to understand your bug, read
https://issues.jboss.org/browse/JBRULES-3301
and read the section "delta based score calculation" in the manual.
HTH
Thanks,
Guy
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With kind regards,
Geoffrey De Smet