[ca90cb1] | 1 | /* |
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| 2 | * Copyright (C) 2010 Ixonos Plc. |
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[ffb6be7] | 3 | * Copyright (C) 2011-2021 Philipp Spitzer, gregor herrmann, Stefan Stahl |
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[ca90cb1] | 4 | * |
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[6df32f2] | 5 | * This file is part of ConfClerk. |
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[ca90cb1] | 6 | * |
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[6df32f2] | 7 | * ConfClerk is free software: you can redistribute it and/or modify it |
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[ca90cb1] | 8 | * under the terms of the GNU General Public License as published by the Free |
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| 9 | * Software Foundation, either version 2 of the License, or (at your option) |
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| 10 | * any later version. |
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| 11 | * |
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[6df32f2] | 12 | * ConfClerk is distributed in the hope that it will be useful, but |
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[ca90cb1] | 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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| 14 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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| 15 | * more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU General Public License along with |
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[6df32f2] | 18 | * ConfClerk. If not, see <http://www.gnu.org/licenses/>. |
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[ca90cb1] | 19 | */ |
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[72f6fe4] | 20 | |
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| 21 | #include <QSqlError> |
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| 22 | #include <QSqlQuery> |
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| 23 | #include <QSqlRecord> |
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| 24 | #include <QVariant> |
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| 25 | #include <QDateTime> |
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[79a7671] | 26 | #include "qglobal.h" |
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| 27 | #if QT_VERSION >= 0x050000 |
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[4b6ae6b] | 28 | #include <QStandardPaths> |
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[79a7671] | 29 | #else |
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| 30 | #include <QDesktopServices> |
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| 31 | #endif |
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[72f6fe4] | 32 | |
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| 33 | #include <QDir> |
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| 34 | #include "sqlengine.h" |
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[8d6798d] | 35 | #include "track.h" |
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| 36 | #include "conference.h" |
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[72f6fe4] | 37 | |
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| 38 | #include <QDebug> |
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| 39 | |
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[0816326] | 40 | SqlEngine::SqlEngine(QObject *aParent): QObject(aParent), DATE_FORMAT("yyyy-MM-dd"), TIME_FORMAT("hh:mm") { |
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[79a7671] | 41 | #if QT_VERSION >= 0x050000 |
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[4b6ae6b] | 42 | QDir dbPath(QStandardPaths::writableLocation(QStandardPaths::DataLocation)); |
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[79a7671] | 43 | #else |
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| 44 | QDir dbPath(QDesktopServices::storageLocation(QDesktopServices::DataLocation)); |
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| 45 | #endif |
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[61346c9] | 46 | dbFilename = dbPath.absoluteFilePath("ConfClerk.sqlite"); |
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[72f6fe4] | 47 | } |
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| 48 | |
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[61346c9] | 49 | |
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| 50 | SqlEngine::~SqlEngine() { |
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[72f6fe4] | 51 | } |
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| 52 | |
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| 53 | |
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[61346c9] | 54 | void SqlEngine::open() { |
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[9b5a80ff] | 55 | // we may have to create the directory of the database |
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[61346c9] | 56 | QFileInfo dbFilenameInfo(dbFilename); |
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[a8f8b5d] | 57 | QDir cwd; |
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| 58 | cwd.mkpath(dbFilenameInfo.absolutePath()); |
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[9b5a80ff] | 59 | // We don't have to handle errors because in worst case, opening the database will fail |
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| 60 | // and db.isOpen() returns false. |
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[61346c9] | 61 | db = QSqlDatabase::addDatabase("QSQLITE"); |
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| 62 | db.setDatabaseName(dbFilename); |
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| 63 | db.open(); |
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| 64 | } |
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| 65 | |
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| 66 | |
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| 67 | int SqlEngine::dbSchemaVersion() { |
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| 68 | QSqlQuery query(db); |
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| 69 | if (!query.exec("PRAGMA user_version")) { |
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| 70 | emitSqlQueryError(query); |
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| 71 | return -2; |
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[72f6fe4] | 72 | } |
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[61346c9] | 73 | query.first(); |
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| 74 | int version = query.value(0).toInt(); |
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| 75 | if (version == 0) { |
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| 76 | // check whether the tables are existing |
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| 77 | if (!query.exec("select count(*) from sqlite_master where name='CONFERENCE'")) { |
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| 78 | emitSqlQueryError(query); |
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| 79 | return -2; |
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| 80 | } |
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| 81 | query.first(); |
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| 82 | if (query.value(0).toInt() == 1) return 0; // tables are existing |
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| 83 | return -1; // database seems to be empty (or has other tables) |
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[e662750] | 84 | } |
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[61346c9] | 85 | return version; |
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| 86 | } |
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[72f6fe4] | 87 | |
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| 88 | |
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[61346c9] | 89 | bool SqlEngine::updateDbSchemaVersion000To001() { |
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[f1826af] | 90 | return applySqlFile(":/dbschema000to001.sql"); |
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[72f6fe4] | 91 | } |
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| 92 | |
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[61346c9] | 93 | |
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[c13a488] | 94 | bool SqlEngine::updateDbSchemaVersion001To002() { |
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| 95 | return applySqlFile(":/dbschema001to002.sql"); |
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| 96 | } |
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| 97 | |
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| 98 | |
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[61346c9] | 99 | bool SqlEngine::createCurrentDbSchema() { |
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[c13a488] | 100 | return applySqlFile(":/dbschema002.sql"); |
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[61346c9] | 101 | } |
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| 102 | |
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| 103 | |
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| 104 | bool SqlEngine::createOrUpdateDbSchema() { |
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| 105 | int version = dbSchemaVersion(); |
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| 106 | switch (version) { |
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| 107 | case -2: |
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| 108 | // the error has already been emitted by the previous function |
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| 109 | return false; |
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| 110 | case -1: |
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| 111 | // empty database |
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| 112 | return createCurrentDbSchema(); |
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| 113 | case 0: |
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| 114 | // db schema version 0 |
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| 115 | return updateDbSchemaVersion000To001(); |
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| 116 | case 1: |
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[c13a488] | 117 | // db schema version 1 |
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| 118 | return updateDbSchemaVersion001To002(); |
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| 119 | case 2: |
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[61346c9] | 120 | // current schema |
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| 121 | return true; |
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| 122 | default: |
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| 123 | // unsupported schema |
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| 124 | emit dbError(tr("Unsupported database schema version %1.").arg(version)); |
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| 125 | } |
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| 126 | return false; |
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[72f6fe4] | 127 | } |
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| 128 | |
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| 129 | |
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[f1826af] | 130 | bool SqlEngine::applySqlFile(const QString sqlFile) { |
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| 131 | QFile file(sqlFile); |
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| 132 | file.open(QIODevice::ReadOnly | QIODevice::Text); |
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| 133 | QString allSqlStatements = file.readAll(); |
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| 134 | QSqlQuery query(db); |
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| 135 | foreach(QString sql, allSqlStatements.split(";")) { |
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| 136 | if (sql.trimmed().isEmpty()) // do not execute empty queries like the last character from create_tables.sql |
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| 137 | continue; |
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| 138 | if (!query.exec(sql)) { |
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| 139 | emitSqlQueryError(query); |
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| 140 | return false; |
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| 141 | } |
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| 142 | } |
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| 143 | return true; |
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| 144 | } |
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| 145 | |
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| 146 | |
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[763b877] | 147 | void SqlEngine::addConferenceToDB(QHash<QString,QString> &aConference, int conferenceId, bool omit_display_time_shift) { |
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[61346c9] | 148 | QSqlQuery query(db); |
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[f0f9fdc] | 149 | bool insert = conferenceId <= 0; |
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| 150 | if (insert) { // insert conference |
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[5293ef0] | 151 | query.prepare("INSERT INTO CONFERENCE (title,url,subtitle,venue,city,start,end," |
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[8d47489] | 152 | "day_change,timeslot_duration,utc_offset,display_time_shift,active) " |
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[5293ef0] | 153 | " VALUES (:title,:url,:subtitle,:venue,:city,:start,:end," |
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[8d47489] | 154 | ":day_change,:timeslot_duration,:utc_offset,:display_time_shift,:active)"); |
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[f0f9fdc] | 155 | } else { // update conference |
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[763b877] | 156 | QString update = "UPDATE CONFERENCE set title=:title, url=:url, subtitle=:subtitle, venue=:venue, city=:city, start=:start, end=:end, " |
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| 157 | "day_change=:day_change, timeslot_duration=:timeslot_duration, utc_offset=:utc_offset"; |
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| 158 | if (!omit_display_time_shift) update += ", display_time_shift=:display_time_shift"; |
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| 159 | update += ", active=:active WHERE id=:id"; |
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| 160 | query.prepare(update); |
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[f0f9fdc] | 161 | } |
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| 162 | foreach (QString prop_name, (QList<QString>() << "title" << "url" << "subtitle" << "venue" << "city")) { |
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| 163 | query.bindValue(QString(":") + prop_name, aConference[prop_name]); |
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| 164 | } |
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| 165 | query.bindValue(":start", QDateTime(QDate::fromString(aConference["start"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t()); |
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| 166 | query.bindValue(":end", QDateTime(QDate::fromString(aConference["end"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t()); |
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[d03ca41] | 167 | QTime dayChange = QTime::fromString(aConference["day_change"].left(TIME_FORMAT.size()), TIME_FORMAT); |
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| 168 | query.bindValue(":day_change", QTime(0, 0).secsTo(dayChange)); |
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[f0f9fdc] | 169 | query.bindValue(":timeslot_duration", -QTime::fromString(aConference["timeslot_duration"],TIME_FORMAT).secsTo(QTime(0,0))); |
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[8d47489] | 170 | QVariant utc_offset; |
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| 171 | if (!aConference.value("utc_offset").isEmpty()) utc_offset = aConference["utc_offset"].toInt(); |
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| 172 | query.bindValue(":utc_offset", utc_offset); |
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[763b877] | 173 | if (!omit_display_time_shift) { |
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| 174 | QVariant display_time_shift; |
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| 175 | if (!aConference.value("display_time_shift").isEmpty()) display_time_shift = aConference["display_time_shift"].toInt(); |
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| 176 | query.bindValue(":display_time_shift", display_time_shift); |
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| 177 | } |
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[f0f9fdc] | 178 | query.bindValue(":active", 1); |
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| 179 | if (!insert) query.bindValue(":id", conferenceId); |
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| 180 | query.exec(); |
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| 181 | emitSqlQueryError(query); |
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| 182 | if (insert) { |
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| 183 | aConference["id"] = query.lastInsertId().toString(); // 'id' is assigned automatically |
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| 184 | } else { |
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[e2c612c] | 185 | aConference["id"] = QVariant(conferenceId).toString(); |
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[72f6fe4] | 186 | } |
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| 187 | } |
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| 188 | |
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| 189 | |
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[61346c9] | 190 | void SqlEngine::addEventToDB(QHash<QString,QString> &aEvent) { |
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[41c4ceb] | 191 | int conferenceId = aEvent["conference_id"].toInt(); |
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| 192 | Conference conference = Conference::getById(conferenceId); |
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| 193 | |
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| 194 | // insert event track to table and get track id |
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[61346c9] | 195 | Track track; |
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| 196 | int trackId; |
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[41c4ceb] | 197 | QString trackName = aEvent["track"]; |
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[e27a3f5] | 198 | if (trackName.isEmpty()) trackName = tr("No track"); |
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[61346c9] | 199 | try |
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[72f6fe4] | 200 | { |
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[41c4ceb] | 201 | track = Track::retrieveByName(conferenceId, trackName); |
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[61346c9] | 202 | trackId = track.id(); |
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| 203 | } |
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| 204 | catch (OrmNoObjectException &e) { |
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[41c4ceb] | 205 | track.setConference(conferenceId); |
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| 206 | track.setName(trackName); |
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[61346c9] | 207 | trackId = track.insert(); |
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| 208 | } |
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[41c4ceb] | 209 | QDate startDate = QDate::fromString(aEvent["date"], DATE_FORMAT); |
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| 210 | QTime startTime = QTime::fromString(aEvent["start"], TIME_FORMAT); |
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[61346c9] | 211 | QDateTime startDateTime; |
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| 212 | startDateTime.setTimeSpec(Qt::UTC); |
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[41c4ceb] | 213 | startDateTime = QDateTime(startDate, startTime, Qt::UTC); |
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[f548c17] | 214 | |
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[61346c9] | 215 | bool event_exists = false; |
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| 216 | { |
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| 217 | QSqlQuery check_event_query; |
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| 218 | check_event_query.prepare("SELECT * FROM EVENT WHERE xid_conference = :xid_conference AND id = :id"); |
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| 219 | check_event_query.bindValue(":xid_conference", aEvent["conference_id"]); |
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| 220 | check_event_query.bindValue(":id", aEvent["id"]); |
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| 221 | if (!check_event_query.exec()) { |
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| 222 | qWarning() << "check event failed, conference id:" << aEvent["xid_conference"] |
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| 223 | << "event id:" << aEvent["id"] |
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| 224 | << "error:" << check_event_query.lastError() |
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| 225 | ; |
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| 226 | return; |
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[f548c17] | 227 | } |
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[61346c9] | 228 | if (check_event_query.isActive() and check_event_query.isSelect() and check_event_query.next()) { |
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| 229 | event_exists = true; |
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[c129da26] | 230 | } |
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[72f6fe4] | 231 | } |
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| 232 | |
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[61346c9] | 233 | QSqlQuery result; |
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| 234 | if (event_exists) { |
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| 235 | result.prepare("UPDATE EVENT SET" |
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| 236 | " start = :start" |
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| 237 | ", duration = :duration" |
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| 238 | ", xid_track = :xid_track" |
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| 239 | ", type = :type" |
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| 240 | ", language = :language" |
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| 241 | ", tag = :tag" |
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| 242 | ", title = :title" |
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| 243 | ", subtitle = :subtitle" |
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| 244 | ", abstract = :abstract" |
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| 245 | ", description = :description" |
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| 246 | " WHERE id = :id AND xid_conference = :xid_conference"); |
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| 247 | } else { |
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| 248 | result.prepare("INSERT INTO EVENT " |
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| 249 | " (xid_conference, id, start, duration, xid_track, type, " |
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| 250 | " language, tag, title, subtitle, abstract, description) " |
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| 251 | " VALUES (:xid_conference, :id, :start, :duration, :xid_track, :type, " |
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| 252 | ":language, :tag, :title, :subtitle, :abstract, :description)"); |
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| 253 | } |
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| 254 | result.bindValue(":xid_conference", aEvent["conference_id"]); |
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| 255 | result.bindValue(":start", QString::number(startDateTime.toTime_t())); |
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| 256 | result.bindValue(":duration", -QTime::fromString(aEvent["duration"],TIME_FORMAT).secsTo(QTime(0,0))); |
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| 257 | result.bindValue(":xid_track", trackId); |
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| 258 | static const QList<QString> props = QList<QString>() |
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| 259 | << "id" << "type" << "language" << "tag" << "title" << "subtitle" << "abstract" << "description"; |
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| 260 | foreach (QString prop_name, props) { |
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| 261 | result.bindValue(QString(":") + prop_name, aEvent[prop_name]); |
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| 262 | } |
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| 263 | if (!result.exec()) { |
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| 264 | qWarning() << "event insert/update failed:" << result.lastError(); |
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| 265 | } |
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| 266 | } |
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[72f6fe4] | 267 | |
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[dcefa71] | 268 | |
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[61346c9] | 269 | void SqlEngine::addPersonToDB(QHash<QString,QString> &aPerson) { |
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| 270 | QSqlQuery query(db); |
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| 271 | query.prepare("INSERT INTO PERSON (xid_conference,id,name) VALUES (:xid_conference, :id, :name)"); |
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| 272 | query.bindValue(":xid_conference", aPerson["conference_id"]); |
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| 273 | query.bindValue(":id", aPerson["id"]); |
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| 274 | query.bindValue(":name", aPerson["name"]); |
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| 275 | query.exec(); // TODO some queries fail due to the unique key constraint |
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| 276 | // if (!query.exec()) qDebug() << "SQL query 'insert into person' failed: " << query.lastError(); |
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| 277 | |
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| 278 | query = QSqlQuery(db); |
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| 279 | query.prepare("INSERT INTO EVENT_PERSON (xid_conference,xid_event,xid_person) VALUES (:xid_conference, :xid_event, :xid_person)"); |
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| 280 | query.bindValue(":xid_conference", aPerson["conference_id"]); |
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| 281 | query.bindValue(":xid_event", aPerson["event_id"]); |
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| 282 | query.bindValue(":xid_person", aPerson["id"]); |
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| 283 | query.exec(); // TODO some queries fail due to the unique key constraint |
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| 284 | // if (!query.exec()) qDebug() << "SQL query 'insert into event_person' failed: " << query.lastError(); |
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[72f6fe4] | 285 | } |
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| 286 | |
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| 287 | |
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[61346c9] | 288 | void SqlEngine::addRoomToDB(QHash<QString,QString> &aRoom) { |
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| 289 | QSqlQuery query(db); |
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| 290 | query.prepare("SELECT id FROM ROOM WHERE xid_conference=:conference_id and name=:name"); |
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| 291 | query.bindValue(":conference_id", aRoom["conference_id"]); |
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| 292 | query.bindValue(":name", aRoom["name"]); |
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[5e50875] | 293 | query.exec(); |
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[61346c9] | 294 | emitSqlQueryError(query); |
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| 295 | // now we have to check whether ROOM record with 'name' exists or not, |
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| 296 | // - if it doesn't exist yet, then we have to add that record to 'ROOM' table |
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| 297 | // and assign autoincremented 'id' to aRoom |
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| 298 | // - if it exists, then we need to get its 'id' and assign it to aRoom |
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| 299 | aRoom["id"] = ""; |
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| 300 | if(query.next()) // ROOM record with 'name' already exists: we need to get its 'id' |
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| 301 | { |
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| 302 | aRoom["id"] = query.value(0).toString(); |
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| 303 | } |
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| 304 | else // ROOM record doesn't exist yet, need to create it |
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[72f6fe4] | 305 | { |
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[63b2343] | 306 | query = QSqlQuery(db); |
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[0ba2b59] | 307 | query.prepare("INSERT INTO ROOM (xid_conference,name) VALUES (:xid_conference, :name)"); |
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[61346c9] | 308 | query.bindValue(":xid_conference", aRoom["conference_id"]); |
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[d942dc3] | 309 | query.bindValue(":name", aRoom["name"]); |
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[5e50875] | 310 | query.exec(); |
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[61346c9] | 311 | emitSqlQueryError(query); |
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| 312 | aRoom["id"]= query.lastInsertId().toString(); // 'id' is assigned automatically |
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| 313 | //LOG_AUTOTEST(query); |
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[72f6fe4] | 314 | } |
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[61346c9] | 315 | |
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| 316 | // remove previous conference/room records; room names might have changed |
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| 317 | query = QSqlQuery(db); |
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| 318 | query.prepare("DELETE FROM EVENT_ROOM WHERE xid_conference=:conference_id AND xid_event=:event_id"); |
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| 319 | query.bindValue(":conference_id", aRoom["conference_id"]); |
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| 320 | query.bindValue(":event_id", aRoom["event_id"]); |
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[5e50875] | 321 | query.exec(); |
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[61346c9] | 322 | emitSqlQueryError(query); |
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| 323 | // and insert new ones |
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| 324 | query = QSqlQuery(db); |
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| 325 | query.prepare("INSERT INTO EVENT_ROOM (xid_conference,xid_event,xid_room) VALUES (:conference_id, :event_id, :room_id)"); |
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| 326 | query.bindValue(":conference_id", aRoom["conference_id"]); |
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| 327 | query.bindValue(":event_id", aRoom["event_id"]); |
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| 328 | query.bindValue(":room_id", aRoom["id"]); |
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[5e50875] | 329 | query.exec(); |
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[61346c9] | 330 | emitSqlQueryError(query); |
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[72f6fe4] | 331 | } |
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| 332 | |
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| 333 | |
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[61346c9] | 334 | void SqlEngine::addLinkToDB(QHash<QString,QString> &aLink) { |
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[72f6fe4] | 335 | //TODO: check if the link doesn't exist before inserting |
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[61346c9] | 336 | QSqlQuery query(db); |
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| 337 | query.prepare("INSERT INTO LINK (xid_event, xid_conference, name, url) VALUES (:xid_event, :xid_conference, :name, :url)"); |
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| 338 | query.bindValue(":xid_event", aLink["event_id"]); |
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| 339 | query.bindValue(":xid_conference", aLink["conference_id"]); |
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| 340 | query.bindValue(":name", aLink["name"]); |
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| 341 | query.bindValue(":url", aLink["url"]); |
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[5e50875] | 342 | query.exec(); |
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[61346c9] | 343 | emitSqlQueryError(query); |
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[72f6fe4] | 344 | } |
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| 345 | |
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[990afd5] | 346 | |
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[af9f24b] | 347 | bool SqlEngine::searchEvent(int aConferenceId, const QMultiHash<QString,QString> &aColumns, const QString &aKeyword) { |
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[61346c9] | 348 | if (aColumns.empty()) return false; |
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[990afd5] | 349 | |
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[e662750] | 350 | // DROP |
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[61346c9] | 351 | QSqlQuery query(db); |
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| 352 | query.exec("DROP TABLE IF EXISTS SEARCH_EVENT"); |
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| 353 | emitSqlQueryError(query); |
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| 354 | |
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[e662750] | 355 | // CREATE |
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[61346c9] | 356 | query.exec("CREATE TEMP TABLE SEARCH_EVENT ( xid_conference INTEGER NOT NULL, id INTEGER NOT NULL )"); |
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| 357 | emitSqlQueryError(query); |
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| 358 | |
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[e662750] | 359 | // INSERT |
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[a55781e] | 360 | QString sql = QString("INSERT INTO SEARCH_EVENT ( xid_conference, id ) " |
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[66698a6] | 361 | "SELECT DISTINCT EVENT.xid_conference, EVENT.id FROM EVENT "); |
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[c7b58d4] | 362 | if( aColumns.contains("ROOM") ){ |
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[71c3eb6] | 363 | sql += "LEFT JOIN EVENT_ROOM ON ( EVENT.xid_conference = EVENT_ROOM.xid_conference AND EVENT.id = EVENT_ROOM.xid_event ) "; |
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| 364 | sql += "LEFT JOIN ROOM ON ( EVENT_ROOM.xid_room = ROOM.id ) "; |
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[c7b58d4] | 365 | } |
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| 366 | if( aColumns.contains("PERSON") ){ |
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[71c3eb6] | 367 | sql += "LEFT JOIN EVENT_PERSON ON ( EVENT.xid_conference = EVENT_PERSON.xid_conference AND EVENT.id = EVENT_PERSON.xid_event ) "; |
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| 368 | sql += "LEFT JOIN PERSON ON ( EVENT_PERSON.xid_person = PERSON.id ) "; |
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[c7b58d4] | 369 | } |
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[a55781e] | 370 | sql += QString("WHERE EVENT.xid_conference = %1 AND (").arg( aConferenceId ); |
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[c7b58d4] | 371 | |
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[525e2e2] | 372 | QStringList searchKeywords = aKeyword.trimmed().split(QRegExp("\\s+")); |
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| 373 | QStringList whereAnd; |
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| 374 | for (int i=0; i < searchKeywords.count(); i++) { |
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| 375 | QStringList whereOr; |
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| 376 | foreach (QString table, aColumns.uniqueKeys()) { |
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| 377 | foreach (QString column, aColumns.values(table)){ |
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| 378 | whereOr.append(QString("%1.%2 LIKE '\%' || :%1%2%3 || '\%'").arg(table).arg(column).arg(i)); |
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[47eda2b] | 379 | } |
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[c7b58d4] | 380 | } |
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[525e2e2] | 381 | whereAnd.append(whereOr.join(" OR ")); |
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[990afd5] | 382 | } |
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[525e2e2] | 383 | sql += whereAnd.join(") AND ("); |
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[a55781e] | 384 | sql += QString(")"); |
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[990afd5] | 385 | |
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[a55781e] | 386 | query.prepare(sql); |
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[525e2e2] | 387 | for (int i = 0; i != searchKeywords.size(); ++i) { |
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| 388 | QString keyword = searchKeywords[i]; |
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| 389 | foreach (QString table, aColumns.uniqueKeys()) { |
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| 390 | foreach (QString column, aColumns.values(table)) { |
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[53effcb] | 391 | query.bindValue(QString(":%1%2%3").arg(table).arg(column).arg(i), keyword ); |
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[47eda2b] | 392 | } |
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[a55781e] | 393 | } |
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| 394 | } |
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| 395 | |
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[61346c9] | 396 | bool success = query.exec(); |
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| 397 | emitSqlQueryError(query); |
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| 398 | return success; |
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[e662750] | 399 | } |
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| 400 | |
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[1bad318] | 401 | |
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[61346c9] | 402 | bool SqlEngine::beginTransaction() { |
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| 403 | QSqlQuery query(db); |
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| 404 | bool success = query.exec("BEGIN IMMEDIATE TRANSACTION"); |
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| 405 | emitSqlQueryError(query); |
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| 406 | return success; |
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[1bad318] | 407 | } |
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| 408 | |
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| 409 | |
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[61346c9] | 410 | bool SqlEngine::commitTransaction() { |
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| 411 | QSqlQuery query(db); |
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| 412 | bool success = query.exec("COMMIT"); |
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| 413 | emitSqlQueryError(query); |
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| 414 | return success; |
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[1bad318] | 415 | } |
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| 416 | |
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[d97bcab] | 417 | |
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[0c71a07] | 418 | bool SqlEngine::rollbackTransaction() { |
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| 419 | QSqlQuery query(db); |
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| 420 | bool success = query.exec("ROLLBACK"); |
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| 421 | emitSqlQueryError(query); |
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| 422 | return success; |
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| 423 | } |
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| 424 | |
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| 425 | |
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[61346c9] | 426 | bool SqlEngine::deleteConference(int id) { |
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| 427 | QSqlQuery query(db); |
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| 428 | bool success = query.exec("BEGIN IMMEDIATE TRANSACTION"); |
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| 429 | emitSqlQueryError(query); |
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| 430 | |
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| 431 | QStringList sqlList; |
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| 432 | sqlList << "DELETE FROM LINK WHERE xid_conference = ?" |
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| 433 | << "DELETE FROM EVENT_ROOM WHERE xid_conference = ?" |
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| 434 | << "DELETE FROM EVENT_PERSON WHERE xid_conference = ?" |
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| 435 | << "DELETE FROM EVENT WHERE xid_conference = ?" |
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| 436 | << "DELETE FROM ROOM WHERE xid_conference = ?" |
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| 437 | << "DELETE FROM PERSON WHERE xid_conference = ?" |
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| 438 | << "DELETE FROM TRACK WHERE xid_conference = ?" |
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| 439 | << "DELETE FROM CONFERENCE WHERE id = ?"; |
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| 440 | |
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| 441 | foreach (const QString& sql, sqlList) { |
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| 442 | query.prepare(sql); |
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| 443 | query.bindValue(0, id); |
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| 444 | success &= query.exec(); |
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| 445 | emitSqlQueryError(query); |
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[d97bcab] | 446 | } |
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| 447 | |
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[61346c9] | 448 | success &= query.exec("COMMIT"); |
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| 449 | emitSqlQueryError(query); |
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[d97bcab] | 450 | |
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[61346c9] | 451 | return success; |
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[d97bcab] | 452 | } |
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| 453 | |
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[9f367eb] | 454 | |
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[61346c9] | 455 | void SqlEngine::emitSqlQueryError(const QSqlQuery &query) { |
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| 456 | QSqlError error = query.lastError(); |
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| 457 | if (error.type() == QSqlError::NoError) return; |
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| 458 | emit dbError(error.text()); |
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[d97bcab] | 459 | } |
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