/*
* Copyright 2010 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.examples.nqueens.app;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.drools.planner.config.XmlSolverFactory;
import org.drools.planner.config.constructionheuristic.ConstructionHeuristicSolverPhaseConfig;
import org.drools.planner.config.heuristic.selector.common.SelectionOrder;
import org.drools.planner.config.heuristic.selector.move.MoveSelectorConfig;
import org.drools.planner.config.heuristic.selector.move.generic.ChangeMoveSelectorConfig;
import org.drools.planner.config.localsearch.LocalSearchSolverPhaseConfig;
import org.drools.planner.config.phase.SolverPhaseConfig;
import org.drools.planner.config.score.director.ScoreDirectorFactoryConfig;
import org.drools.planner.config.solver.SolverConfig;
import org.drools.planner.config.termination.TerminationConfig;
import org.drools.planner.core.Solver;
import org.drools.planner.core.constructionheuristic.greedyFit.decider.ConstructionHeuristicPickEarlyType;
import org.drools.planner.examples.common.app.CommonApp;
import org.drools.planner.examples.common.persistence.SolutionDao;
import org.drools.planner.examples.common.swingui.SolutionPanel;
import org.drools.planner.examples.nqueens.domain.NQueens;
import org.drools.planner.examples.nqueens.domain.Queen;
import org.drools.planner.examples.nqueens.persistence.NQueensDaoImpl;
import org.drools.planner.examples.nqueens.swingui.NQueensPanel;
public class NQueensApp extends CommonApp {
public static final String SOLVER_CONFIG
= "/org/drools/planner/examples/nqueens/solver/nqueensSolverConfig.xml";
public static void main(String[] args) {
new NQueensApp().init();
}
@Override
protected Solver createSolver() {
XmlSolverFactory solverFactory = new XmlSolverFactory();
solverFactory.configure(SOLVER_CONFIG);
return solverFactory.buildSolver();
}
protected Solver createSolverByApi() {
// Not recommended! It is highly recommended to use XmlSolverFactory with an XML configuration instead.
SolverConfig solverConfig = new SolverConfig();
solverConfig.setSolutionClass(NQueens.class);
Set<Class<?>> planningEntityClassSet = new HashSet<Class<?>>();
planningEntityClassSet.add(Queen.class);
solverConfig.setPlanningEntityClassSet(planningEntityClassSet);
ScoreDirectorFactoryConfig scoreDirectorFactoryConfig = solverConfig.getScoreDirectorFactoryConfig();
scoreDirectorFactoryConfig.setScoreDefinitionType(ScoreDirectorFactoryConfig.ScoreDefinitionType.SIMPLE);
scoreDirectorFactoryConfig.setScoreDrlList(
Arrays.asList("/org/drools/planner/examples/nqueens/solver/nQueensScoreRules.drl"));
TerminationConfig terminationConfig = solverConfig.getTerminationConfig();
terminationConfig.setScoreAttained("0");
List<SolverPhaseConfig> solverPhaseConfigList = new ArrayList<SolverPhaseConfig>();
ConstructionHeuristicSolverPhaseConfig constructionHeuristicSolverPhaseConfig
= new ConstructionHeuristicSolverPhaseConfig();
constructionHeuristicSolverPhaseConfig.setConstructionHeuristicType(
ConstructionHeuristicSolverPhaseConfig.ConstructionHeuristicType.FIRST_FIT_DECREASING);
constructionHeuristicSolverPhaseConfig.setConstructionHeuristicPickEarlyType(
ConstructionHeuristicPickEarlyType.FIRST_LAST_STEP_SCORE_EQUAL_OR_IMPROVING);
solverPhaseConfigList.add(constructionHeuristicSolverPhaseConfig);
LocalSearchSolverPhaseConfig localSearchSolverPhaseConfig = new LocalSearchSolverPhaseConfig();
ChangeMoveSelectorConfig changeMoveSelectorConfig = new ChangeMoveSelectorConfig();
changeMoveSelectorConfig.setSelectionOrder(SelectionOrder.ORIGINAL);
localSearchSolverPhaseConfig.setMoveSelectorConfigList(
Arrays.<MoveSelectorConfig>asList(changeMoveSelectorConfig));
localSearchSolverPhaseConfig.getAcceptorConfig().setSolutionTabuSize(1000);
solverPhaseConfigList.add(localSearchSolverPhaseConfig);
solverConfig.setSolverPhaseConfigList(solverPhaseConfigList);
return solverConfig.buildSolver();
}
@Override
protected SolutionPanel createSolutionPanel() {
return new NQueensPanel();
}
@Override
protected SolutionDao createSolutionDao() {
return new NQueensDaoImpl();
}
}