IdentifiableComparator.java

package net.sf.uadetector.internal.data;

import java.util.Comparator;

import javax.annotation.concurrent.ThreadSafe;

import net.sf.uadetector.internal.data.domain.Identifiable;
import net.sf.uadetector.internal.util.CompareNullSafe;

@ThreadSafe
public final class IdentifiableComparator extends CompareNullSafe<Identifiable> implements Comparator<Identifiable> {

    public static final IdentifiableComparator INSTANCE = new IdentifiableComparator();

    private static final long serialVersionUID = -4279820324904203666L;

    /**
     * <strong>Attention:</strong> This class is a stateless singleton and not intended to create more than one object
     * from it.
     */
    private IdentifiableComparator() {
        // This class is not intended to create own objects from it.
    }

    @Override
    public int compareType(final Identifiable o1, final Identifiable o2) {
        return compareInt(o1.getId(), o2.getId());
    }

}