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.portal.verify;
016    
017    import com.liferay.portal.kernel.util.LoggingTimer;
018    import com.liferay.portal.kernel.util.StringBundler;
019    
020    import java.sql.PreparedStatement;
021    
022    /**
023     * @author Alberto Chaparro
024     */
025    public class VerifyRatings extends VerifyProcess {
026    
027            @Override
028            protected void doVerify() throws Exception {
029                    normalizeRatingStats();
030            }
031    
032            protected void normalizeRatingStats() throws Exception {
033                    try (LoggingTimer loggingTimer = new LoggingTimer()) {
034                            StringBundler sb = new StringBundler(6);
035    
036                            sb.append("update RatingsStats set ");
037                            sb.append(_SQL_UPDATE_AVERAGE_SCORE);
038                            sb.append(", ");
039                            sb.append(_SQL_UPDATE_TOTAL_ENTRIES);
040                            sb.append(", ");
041                            sb.append(_SQL_UPDATE_TOTAL_SCORE);
042    
043                            try (PreparedStatement ps = connection.prepareStatement(
044                                            sb.toString())) {
045    
046                                    ps.executeUpdate();
047                            }
048                    }
049            }
050    
051            private static final String _SQL_FROM_WHERE_CLAUSE =
052                    "from RatingsEntry where RatingsStats.classPK = RatingsEntry.classPK " +
053                            "and RatingsStats.classNameId = RatingsEntry.classNameId " +
054                                    "group by classNameId, classPK";
055    
056            private static final String _SQL_UPDATE_AVERAGE_SCORE =
057                    "averageScore = coalesce((select sum(RatingsEntry.score) / count(1) " +
058                            _SQL_FROM_WHERE_CLAUSE + "), 0)";
059    
060            private static final String _SQL_UPDATE_TOTAL_ENTRIES =
061                    "totalEntries = coalesce((select count(1) " + _SQL_FROM_WHERE_CLAUSE +
062                            "), 0)";
063    
064            private static final String _SQL_UPDATE_TOTAL_SCORE =
065                    "totalScore = coalesce((select sum(RatingsEntry.score) " +
066                            _SQL_FROM_WHERE_CLAUSE + "), 0)";
067    
068    }