On 16-06-14 13:46, dBijkoo wrote: > i have a class ChangeMoveFilter which implements > SelectionFilter<ChangeMoveSelector> to sort out moves that break hard > constraints. > > In the config it looks like this > <constructionHeuristic> > <queuedEntityPlacer> > <entitySelector id="placerEntitySelector"> > <cacheType>PHASE</cacheType> > </entitySelector> > <changeMoveSelector> > *<filterClass>solver.move.ChangeMoveFilter</filterClass>* > <entitySelector mimicSelectorRef="placerEntitySelector"/> > <valueSelector> > <cacheType>PHASE</cacheType> > </valueSelector> > </changeMoveSelector> > </queuedEntityPlacer> > </constructionHeuristic> > > However I am getting the impression that the overridden accept function is > called before anything changed in the entity. Because the (only) > planningvariable of the entity is still null, which would never be able to > happen in my understanding.
The CH (construction heursistics) start from an uninitialized solution (usually), so all variables start out as null. This means, for example on the cloud balancing example: ChangeMove.getEntity() is NOT null and an instance of Process ((Process) ChangeMove.getEntity()).getComputer() is null ChangeMove.getToPlanningValue() is NOT null and an instance of Computer HTH > > Am i missing something or is the filter move called before anything changes > in the given entity? > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/SelectionFilter-ChangeMove-question-tp4030063.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
