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OptaPlanner solves planning problems.
This lightweight, embeddable planning engine implements powerful and scalable algorithms
to optimize business resource scheduling and planning.
This module contains the examples which demonstrate how to use it in a normal Java application.
package org.optaplanner.examples.common.business;
import java.io.File;
import java.util.Comparator;
public class ProblemFileComparator implements Comparator {
private static final AlphaNumericStringComparator ALPHA_NUMERIC_STRING_COMPARATOR = new AlphaNumericStringComparator();
private static final Comparator COMPARATOR = Comparator.comparing(File::getParent, ALPHA_NUMERIC_STRING_COMPARATOR)
.thenComparing(File::isDirectory)
.thenComparing(f -> !f.getName().toLowerCase().startsWith("demo"))
.thenComparing(f -> f.getName().toLowerCase(), ALPHA_NUMERIC_STRING_COMPARATOR)
.thenComparing(File::getName);
@Override
public int compare(File a, File b) {
return COMPARATOR.compare(a, b);
}
}