001 /*
002 * Copyright 2011 Christian Kumpe http://kumpe.de/christian/java
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package de.kumpe.hadooptimizer.impl;
017
018 import java.util.Collection;
019
020 import de.kumpe.hadooptimizer.EsIndividual;
021 import de.kumpe.hadooptimizer.EvaluationResult;
022 import de.kumpe.hadooptimizer.Halter;
023 import de.kumpe.hadooptimizer.Stoppable;
024
025 /**
026 * A Wrapper that transforms an {@link Halter Halter<double[]>} into an
027 * {@link Halter Halter<EsIndividual>}.
028 *
029 * @author <a href="http://kumpe.de/christian/java">Christian Kumpe</a>
030 */
031 public final class EsHalterWrapper extends
032 NeedsRandomWrapperBase<Halter<double[]>> implements
033 Halter<EsIndividual>, Stoppable {
034 private static final long serialVersionUID = 1L;
035
036 /**
037 *
038 * Creates a new {@link EsHalterWrapper}wrapping the specified
039 * {@link Halter Halter<double[]>}.
040 *
041 * @param delegate
042 * an {@link Halter Halter<double[]>} to wrap
043 */
044 public EsHalterWrapper(final Halter<double[]> delegate) {
045 super(delegate);
046 }
047
048 @Override
049 public boolean halt(
050 final Collection<EvaluationResult<EsIndividual>> evaluationResults) {
051 return delegate
052 .halt(new UnmodifiableCollectionWrapper<EvaluationResult<double[]>, EvaluationResult<EsIndividual>>(
053 evaluationResults) {
054 @Override
055 protected EvaluationResult<double[]> wrap(
056 final EvaluationResult<EsIndividual> delegateElement) {
057 return new EvaluationResult<double[]>(delegateElement
058 .getIndividual().getIndividual(),
059 delegateElement.getEvaluation());
060 }
061 });
062 }
063
064 @Override
065 public void stop() {
066 if (delegate instanceof Stoppable) {
067 ((Stoppable) delegate).stop();
068 }
069 }
070 }