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 org.apache.commons.logging.Log;
019    import org.apache.commons.logging.LogFactory;
020    
021    import de.kumpe.hadooptimizer.EsIndividual;
022    import de.kumpe.hadooptimizer.Evaluator;
023    
024    /**
025     * Wrapp's a given {@link Evaluator Evaluator<double[]>} to evaluate the
026     * {@code double[]}-individual nested in an {@link EsIndividual}.
027     * 
028     * @author <a href="http://kumpe.de/christian/java">Christian Kumpe</a>
029     */
030    public final class EsEvaluatorWrapper extends
031                    NeedsRandomWrapperBase<Evaluator<double[]>> implements
032                    Evaluator<EsIndividual> {
033            private static final long serialVersionUID = 1L;
034            private static final Log log = LogFactory.getLog(EsEvaluatorWrapper.class);
035    
036            /**
037             * Creates a new {@link EsEvaluatorWrapper} wrapping the specified
038             * {@link Evaluator Evaluator&lt;double[]&gt;}.
039             * 
040             * @param delegate
041             *            an {@link Evaluator Evaluator&lt;double[]&gt;} to wrap
042             */
043            public EsEvaluatorWrapper(final Evaluator<double[]> delegate) {
044                    super(delegate);
045    
046                    if (log.isDebugEnabled()) {
047                            log.debug("Constructing new EsEvaluatorWrapper which wraps "
048                                            + delegate);
049                    }
050            }
051    
052            @Override
053            public double evaluate(final EsIndividual individual) {
054                    return delegate.evaluate(individual.getIndividual());
055            }
056    }