001    /**
002     * Copyright (c) 2000-present 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.portlet.asset.util.comparator;
016    
017    import com.liferay.portal.kernel.util.OrderByComparator;
018    import com.liferay.portlet.asset.model.AssetCategory;
019    
020    /**
021     * @author Shuyang Zhou
022     */
023    public class AssetCategoryLeftCategoryIdComparator
024            extends OrderByComparator<AssetCategory> {
025    
026            public static final String ORDER_BY_ASC = "leftCategoryId ASC";
027    
028            public static final String ORDER_BY_DESC = "leftCategoryId DESC";
029    
030            public static final String[] ORDER_BY_FIELDS = {"leftCategoryId"};
031    
032            public AssetCategoryLeftCategoryIdComparator() {
033                    this(false);
034            }
035    
036            public AssetCategoryLeftCategoryIdComparator(boolean ascending) {
037                    _ascending = ascending;
038            }
039    
040            @Override
041            public int compare(
042                    AssetCategory assetCategory1, AssetCategory assetCategory2) {
043    
044                    long leftCategoryId1 = assetCategory1.getLeftCategoryId();
045                    long leftCategoryId2 = assetCategory2.getLeftCategoryId();
046    
047                    int value = 0;
048    
049                    if (leftCategoryId1 < leftCategoryId2) {
050                            value = -1;
051                    }
052                    else if (leftCategoryId1 > leftCategoryId2) {
053                            value = 1;
054                    }
055    
056                    if (_ascending) {
057                            return value;
058                    }
059                    else {
060                            return -value;
061                    }
062            }
063    
064            @Override
065            public String getOrderBy() {
066                    if (_ascending) {
067                            return ORDER_BY_ASC;
068                    }
069                    else {
070                            return ORDER_BY_DESC;
071                    }
072            }
073    
074            @Override
075            public String[] getOrderByFields() {
076                    return ORDER_BY_FIELDS;
077            }
078    
079            @Override
080            public boolean isAscending() {
081                    return _ascending;
082            }
083    
084            private final boolean _ascending;
085    
086    }