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 /*
  * Copyright 2011 JBoss Inc
  *
  * 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.drools.planner.core.domain.entity;
public class PlanningEntitySorter {
    // TODO also keep PlanningEntityDescriptor?
    private Comparator<ObjectdifficultyComparator = null;
    public PlanningEntitySorter() {
    }
    public void setDifficultyComparator(Comparator<ObjectdifficultyComparator) {
        this. = difficultyComparator;
    }
    public void setDifficultyWeightFactory(PlanningEntityDifficultyWeightFactory difficultyWeightFactory) {
        this. = difficultyWeightFactory;
    }
    public boolean isSortDifficultySupported() {
        return  != null ||  != null;
    }
    public void sortDifficultyAscending(Solution solutionList<ObjectplanningEntityList) {
        if ( != null) {
            Collections.sort(planningEntityList);
        } else if ( != null) {
            SortedMap<ComparableObjectplanningEntityMap = new TreeMap<ComparableObject>();
            for (Object planningEntity : planningEntityList) {
                Comparable difficultyWeight = .createDifficultyWeight(solutionplanningEntity);
                Object previous = planningEntityMap.put(difficultyWeightplanningEntity);
                if (previous != null) {
                    throw new IllegalStateException("The planningEntityList contains 2 times the same planningEntity ("
                            + previous + ") and (" + planningEntity + ").");
                }
            }
            planningEntityList.clear();
            planningEntityList.addAll(planningEntityMap.values());
        } else {
            throw new IllegalStateException("Sorting on difficulty is impossible" +
                    " because difficultyComparator and difficultyWeightFactory are null.");
        }
    }
    public void sortDifficultyDescending(Solution solutionList<ObjectplanningEntityList) {
        sortDifficultyAscending(solutionplanningEntityList);
        Collections.reverse(planningEntityList);
    }
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