Re: [rules-users] SelectionFilter<ChangeMove> question
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?
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