001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.util.comparator;
016    
017    import com.liferay.portal.model.Portlet;
018    import com.liferay.portal.util.PortletKeys;
019    
020    import java.io.Serializable;
021    
022    import java.util.Comparator;
023    
024    /**
025     * @author Brian Wing Shun Chan
026     */
027    public class PortletLuceneComparator
028            implements Comparator<Portlet>, Serializable {
029    
030            @Override
031            public int compare(Portlet portlet1, Portlet portlet2) {
032                    String portletId1 = portlet1.getPortletId();
033                    String portletId2 = portlet2.getPortletId();
034    
035                    // Index document library last because it's usually the slowest.
036    
037                    if (portletId1.equals(PortletKeys.DOCUMENT_LIBRARY)) {
038                            return 1;
039                    }
040                    else if (portletId2.equals(PortletKeys.DOCUMENT_LIBRARY)) {
041                            return -1;
042                    }
043                    else {
044                            return portletId1.compareTo(portletId2);
045                    }
046            }
047    
048    }