/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.optaplanner.core.impl.heuristic.selector.entity.decorator;
import org.optaplanner.core.api.domain.solution.PlanningSolution;
import org.optaplanner.core.api.domain.variable.PlanningVariable;
import org.optaplanner.core.impl.domain.variable.descriptor.GenuineVariableDescriptor;
import org.optaplanner.core.impl.heuristic.selector.common.decorator.SelectionFilter;
import org.optaplanner.core.impl.score.director.ScoreDirector;
/**
* Behaves as if it was a UninitializedVariableEntityFilter, except when the variable is
* {@link PlanningVariable#nullable()}.
* @param <Solution_> the solution type, the class with the {@link PlanningSolution} annotation
*/
public class NullValueReinitializeVariableEntityFilter<Solution_> implements SelectionFilter<Solution_, Object> {
private final GenuineVariableDescriptor<Solution_> variableDescriptor;
public NullValueReinitializeVariableEntityFilter(GenuineVariableDescriptor<Solution_> variableDescriptor) {
this.variableDescriptor = variableDescriptor;
}
@Override
public boolean accept(ScoreDirector<Solution_> scoreDirector, Object entity) {
// Do not use variableDescriptor.isInitialized() because if nullable it must also accept it
Object value = variableDescriptor.getValue(entity);
return value == null;
}
}