| /******************************************************************************* |
| * Copyright (c) 2012, 2020 Original authors and others. |
| * |
| * This program and the accompanying materials are made |
| * available under the terms of the Eclipse Public License 2.0 |
| * which is available at https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Original authors and others - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.nebula.widgets.nattable.config; |
| |
| import java.util.Comparator; |
| |
| @SuppressWarnings("unchecked") |
| public class DefaultComparator implements Comparator<Object> { |
| |
| private static DefaultComparator singleton; |
| |
| public static final DefaultComparator getInstance() { |
| if (singleton == null) { |
| singleton = new DefaultComparator(); |
| } |
| return singleton; |
| } |
| |
| @Override |
| @SuppressWarnings("rawtypes") |
| public int compare(final Object o1, final Object o2) { |
| if (o1 == null) { |
| if (o2 == null) { |
| return 0; |
| } else { |
| return -1; |
| } |
| } else if (o2 == null) { |
| return 1; |
| } else if (o1 instanceof Comparable && o2 instanceof Comparable) { |
| return ((Comparable) o1).compareTo(o2); |
| } else { |
| return o1.toString().compareTo(o2.toString()); |
| } |
| } |
| |
| } |