TournamentSelectionPolicyHandler.java
package net.bmahe.genetics4j.core.selection;
import java.util.random.RandomGenerator;
import org.apache.commons.lang3.Validate;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import net.bmahe.genetics4j.core.spec.AbstractEAConfiguration;
import net.bmahe.genetics4j.core.spec.AbstractEAExecutionContext;
import net.bmahe.genetics4j.core.spec.selection.SelectionPolicy;
import net.bmahe.genetics4j.core.spec.selection.Tournament;
public class TournamentSelectionPolicyHandler<T extends Comparable<T>> implements SelectionPolicyHandler<T> {
public static final Logger logger = LogManager.getLogger(TournamentSelectionPolicyHandler.class);
private final RandomGenerator randomGenerator;
public TournamentSelectionPolicyHandler(final RandomGenerator _randomGenerator) {
Validate.notNull(_randomGenerator);
this.randomGenerator = _randomGenerator;
}
@Override
public boolean canHandle(final SelectionPolicy selectionPolicy) {
Validate.notNull(selectionPolicy);
return selectionPolicy instanceof Tournament;
}
@Override
public Selector<T> resolve(final AbstractEAExecutionContext<T> eaExecutionContext,
final AbstractEAConfiguration<T> eaConfiguration,
final SelectionPolicyHandlerResolver<T> selectionPolicyHandlerResolver,
final SelectionPolicy selectionPolicy) {
Validate.notNull(selectionPolicy);
Validate.isInstanceOf(Tournament.class, selectionPolicy);
return new TournamentSelector<>(selectionPolicy, randomGenerator);
}
}