/**
* =============================================================================
*
* ORCID (R) Open Source
* http://orcid.org
*
* Copyright (c) 2012-2014 ORCID, Inc.
* Licensed under an MIT-Style License (MIT)
* http://orcid.org/open-source-license
*
* This copyright and license information (including a link to the full license)
* shall be included in its entirety in all copies or substantial portion of
* the software.
*
* =============================================================================
*/
package org.orcid.persistence.jpa.entities;
import java.io.Serializable;
import java.util.Comparator;
/**
*
* Comparator that compares OrcidEntity objects based on their group id.
*
* Spring Sort annotation didn't seem to have descending function.
* Sort by index and then compare value
*
* @author rcpeters
*
*/
public class PeerReviewEntityDisplayIndexComparatorDesc<T> implements Comparator<PeerReviewEntity>, Serializable {
private static final long serialVersionUID = 1L;
@Override
public int compare(PeerReviewEntity o1, PeerReviewEntity o2) {
Long index = o1.getDisplayIndex();
Long otherIndex = o2.getDisplayIndex();
if (index == otherIndex) return o2.compareTo(o1);
if (index == null) return 1;
if (otherIndex == null) return -1;
return otherIndex.compareTo(index);
}
}