001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 * $Id: PermissionUIItemComparator.java 28304 2007-12-21 12:13:32Z ogrisel $
020 */
021package org.nuxeo.ecm.core.security;
022
023import java.io.Serializable;
024import java.util.Comparator;
025
026/**
027 * @author <a href="mailto:[email protected]">Olivier Grisel</a>
028 */
029public class PermissionUIItemComparator implements Comparator<PermissionUIItemDescriptor>, Serializable {
030
031    private static final long serialVersionUID = 6468292882222351585L;
032
033    @Override
034    public int compare(PermissionUIItemDescriptor pid1, PermissionUIItemDescriptor pid2) {
035        int diff = pid2.getOrder() - pid1.getOrder();
036        if (diff == 0) {
037            return 0;
038        } else if (diff > 0) { // ascending order
039            return -1;
040        } else {
041            return 1;
042        }
043    }
044
045}