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The optimization module of OpenDSE
There is a newer version: 1.8
/**
 * OpenDSE is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version.
 * 
 * OpenDSE is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with OpenDSE. If not, see http://www.gnu.org/licenses/.
 */
package net.sf.opendse.optimization.encoding;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import net.sf.opendse.model.Link;
import net.sf.opendse.model.Resource;
import net.sf.opendse.model.Routings;
import net.sf.opendse.model.Specification;
import net.sf.opendse.model.Task;
import net.sf.opendse.optimization.ImplementationWrapper;
import net.sf.opendse.optimization.OptimizationModule;
import net.sf.opendse.optimization.SpecificationWrapper;
import net.sf.opendse.optimization.io.SpecificationWrapperInstance;

import org.opt4j.core.Individual;
import org.opt4j.core.optimizer.Archive;
import org.opt4j.core.start.Opt4JModule;
import org.opt4j.core.start.Opt4JTask;
import org.opt4j.optimizers.ea.EvolutionaryAlgorithmModule;

import com.google.inject.Module;

/**
 * The {@code SingleImplementation} determines an implementing
 * {@code Specification} from a general {@code Specification}.
 * 
 * @author Martin Lukasiewycz
 * 
 */
public class SingleImplementation {
	
	protected final List modules = new ArrayList();
	
	public SingleImplementation(){
	}
	
	public SingleImplementation(Collection modules){
		this.modules.addAll(modules);
	}

	public Specification get(final Specification spec) {
		return get(spec, false);
	}

	public Specification get(final Specification spec, boolean generateRoutings) {
		if (generateRoutings) {
			RoutingGenerator routingsGenerator = new RoutingGenerator();
			Routings fullRoutings = routingsGenerator.fill(
					spec.getApplication(), spec.getArchitecture());

			for (Task task : fullRoutings.getTasks()) {
				spec.getRoutings().remove(task);
				spec.getRoutings().set(task, fullRoutings.get(task));
			}
			RoutingFilter.filter(spec);
		}

		EvolutionaryAlgorithmModule ea = new EvolutionaryAlgorithmModule();
		ea.setGenerations(2);
		ea.setAlpha(1);
		ea.setLambda(1);

		Module specModule = new Opt4JModule() {

			@Override
			protected void config() {
				SpecificationWrapperInstance sw = new SpecificationWrapperInstance(spec);
				bind(SpecificationWrapper.class).toInstance(sw);
			}
		};

		OptimizationModule opt = new OptimizationModule();

		Collection modules = new ArrayList();
		modules.add(ea);
		modules.add(opt);
		modules.add(specModule);
		
		for(Module module: this.modules){
			modules.add(module);
		}

		Opt4JTask task = new Opt4JTask(false);
		task.init(modules);

		try {
			task.execute();
			Archive archive = task.getInstance(Archive.class);

			for (Individual individual : archive) {
				Specification impl = ((ImplementationWrapper) individual.getPhenotype())
						.getImplementation();
				return impl;
			}

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			task.close();
		}

		return null;

	}

}