Disabling and enabling constraints during runtime

I've set the constaints like this:-

ScoreDirectorFactoryConfig scoreDirectorFactoryConfig = new ScoreDirectorFactoryConfig();         scoreDirectorFactoryConfig.setConstraintProviderClass(VehicleRoutingConstraintProvider.class);

I couldn't find out anything related to enabling and/or disabling constraints in optaplanner.

So, I wanted to know if there's a way to enable and disable the constraints after or before setting the constraint provider class.

My question is:

Can we enable and/or disable constraint during runtime in optaplanner based on a condition?

You can disable constraints by using a @ConstraintConfiguration class and set the @ConstraintWeight field corresponding to the disabled constraint to the zero score (see https://www.optaplanner.org/docs/optaplanner/latest/score-calculation/score-calculation.html#constraintConfiguration for full details).

Planning Solution Class:

@PlanningSolution
public class ConferenceSolution {
    
    @ConstraintConfigurationProvider
    private ConferenceConstraintConfiguration constraintConfiguration;
    
    // ...
}

ConstraintConfiguration:

@ConstraintConfiguration(constraintPackage = "...conferencescheduling.score")
public class ConferenceConstraintConfiguration {

    @ConstraintWeight("Speaker conflict")
    private HardMediumSoftScore speakerConflict = HardMediumSoftScore.ofHard(10);

    @ConstraintWeight("Theme track conflict")
    private HardMediumSoftScore themeTrackConflict = HardMediumSoftScore.ofSoft(10);
    @ConstraintWeight("Content conflict")
    private HardMediumSoftScore contentConflict = HardMediumSoftScore.ofSoft(100);

    // ...
}

Disabling constraints

ConferenceConstraintConfiguration constraintConfig = new ConferenceConstraintConfiguration();
constraintConfig.contentConflict = HardMediumSoftScore.ZERO;