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OptaPlanner : FilterClass configuration in ValueSelector

I am using OptaPlanner 6.1.0.Final. When I try to use FilterClass in ValueSelector configuration, I got this exception:

Caused by: com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$UnknownFieldException: No such field org.optaplanner.core.config.heuristic.selector.value.ValueSelectorConfig.filterClass

Acording to the OptaPlanner docs (in 7.2.4. Filtered selection), FilterClass should also work on ValueSelector.

...apply it on a lower levels, such as a filterClass on the entitySelector or valueSelector:

 <changeMoveSelector>
  <entitySelector>
    <filterClass>...EntityFilter</filterClass>
  </entitySelector>
</changeMoveSelector>

Is this a bug on the Planner? Or any other way to have Filtering class for Planning Variables? Appreciated for your time and suggestion in advance.

Below is my configuration:

<changeMoveSelector>
                <entitySelector mimicSelectorRef="placerEntitySelector">
                </entitySelector>
                <valueSelector>
                    <variableName>room</variableName>
                    <cacheType>PHASE</cacheType>
                    <selectionOrder>SORTED</selectionOrder>
      <filterClass>..SelectionFilter</filterClass>
                    </valueSelector>
            </changeMoveSelector>
Solution

  • <valueSelector> does not support filters yet (see TODO ValueSelectorConfig.java). It's debatable whether that's useful: if you have a good use case, do share.

    Note that the surrounding <moveSelector> does support filtering. In that case, you're filtering moves (a ChangeMove in this case), instead of values - so there's more info, namely both the entity and the value, instead of just the value.