source: confclerk_git/src/sql/sqlengine.cpp @ 83481c6

qt5
Last change on this file since 83481c6 was 83481c6, checked in by gregor herrmann <gregoa@…>, 9 years ago

bump copyright years

  • Property mode set to 100644
File size: 16.6 KB
Line 
1/*
2 * Copyright (C) 2010 Ixonos Plc.
3 * Copyright (C) 2011-2013 Philipp Spitzer, gregor herrmann, Stefan Stahl
4 *
5 * This file is part of ConfClerk.
6 *
7 * ConfClerk is free software: you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation, either version 2 of the License, or (at your option)
10 * any later version.
11 *
12 * ConfClerk is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * ConfClerk.  If not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include <QSqlError>
22#include <QSqlQuery>
23#include <QSqlRecord>
24#include <QVariant>
25#include <QDateTime>
26
27#include <QDir>
28#include <QDesktopServices>
29#include "sqlengine.h"
30#include "track.h"
31#include "conference.h"
32
33#include <QDebug>
34
35const QString DATE_FORMAT ("yyyy-MM-dd");
36const QString TIME_FORMAT ("hh:mm");
37
38SqlEngine::SqlEngine(QObject *aParent): QObject(aParent) {
39    QDir dbPath(QDesktopServices::storageLocation(QDesktopServices::DataLocation));
40    dbFilename = dbPath.absoluteFilePath("ConfClerk.sqlite");
41}
42
43
44SqlEngine::~SqlEngine() {
45}
46
47
48void SqlEngine::open() {
49    // we may have to create the directory of the database
50    QFileInfo dbFilenameInfo(dbFilename);
51    QDir cwd;
52    cwd.mkpath(dbFilenameInfo.absolutePath());
53    // We don't have to handle errors because in worst case, opening the database will fail
54    // and db.isOpen() returns false.
55    db = QSqlDatabase::addDatabase("QSQLITE");
56    db.setDatabaseName(dbFilename);
57    db.open();
58}
59
60
61int SqlEngine::dbSchemaVersion() {
62    QSqlQuery query(db);
63    if (!query.exec("PRAGMA user_version")) {
64        emitSqlQueryError(query);
65        return -2;
66    }
67    query.first();
68    int version = query.value(0).toInt();
69    if (version == 0) {
70        // check whether the tables are existing
71        if (!query.exec("select count(*) from sqlite_master where name='CONFERENCE'")) {
72            emitSqlQueryError(query);
73            return -2;
74        }
75        query.first();
76        if (query.value(0).toInt() == 1) return 0; // tables are existing
77        return -1; // database seems to be empty (or has other tables)
78    }
79    return version;
80}
81
82
83bool SqlEngine::updateDbSchemaVersion000To001() {
84    return applySqlFile(":/dbschema000to001.sql");
85}
86
87
88bool SqlEngine::createCurrentDbSchema() {
89    return applySqlFile(":/dbschema001.sql");
90}
91
92
93bool SqlEngine::createOrUpdateDbSchema() {
94    int version = dbSchemaVersion();
95    switch (version) {
96    case -2:
97        // the error has already been emitted by the previous function
98        return false;
99    case -1:
100        // empty database
101        return createCurrentDbSchema();
102    case 0:
103        // db schema version 0
104        return updateDbSchemaVersion000To001();
105    case 1:
106        // current schema
107        return true;
108    default:
109        // unsupported schema
110        emit dbError(tr("Unsupported database schema version %1.").arg(version));
111    }
112    return false;
113}
114
115
116bool SqlEngine::applySqlFile(const QString sqlFile) {
117    QFile file(sqlFile);
118    file.open(QIODevice::ReadOnly | QIODevice::Text);
119    QString allSqlStatements = file.readAll();
120    QSqlQuery query(db);
121    foreach(QString sql, allSqlStatements.split(";")) {
122        if (sql.trimmed().isEmpty())  // do not execute empty queries like the last character from create_tables.sql
123            continue;
124        if (!query.exec(sql)) {
125            emitSqlQueryError(query);
126            return false;
127        }
128    }
129    return true;
130}
131
132
133void SqlEngine::addConferenceToDB(QHash<QString,QString> &aConference, int conferenceId) {
134    QSqlQuery query(db);
135    if (conferenceId <= 0) // insert conference
136    {
137        query.prepare("INSERT INTO CONFERENCE (title,url,subtitle,venue,city,start,end,"
138                                                "day_change,timeslot_duration,active) "
139                        " VALUES (:title,:url,:subtitle,:venue,:city,:start,:end,"
140                                                ":day_change,:timeslot_duration,:active)");
141        foreach (QString prop_name, (QList<QString>() << "title" << "url" << "subtitle" << "venue" << "city")) {
142            query.bindValue(QString(":") + prop_name, aConference[prop_name]);
143        }
144        query.bindValue(":start", QDateTime(QDate::fromString(aConference["start"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
145        query.bindValue(":end", QDateTime(QDate::fromString(aConference["end"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
146        query.bindValue(":day_change", -QTime::fromString(aConference["day_change"],TIME_FORMAT).secsTo(QTime(0,0)));
147        query.bindValue(":timeslot_duration", -QTime::fromString(aConference["timeslot_duration"],TIME_FORMAT).secsTo(QTime(0,0)));
148        query.bindValue(":active", 1);
149        query.exec();
150        emitSqlQueryError(query);
151        aConference["id"] = query.lastInsertId().toString(); // 'id' is assigned automatically
152    }
153    else // update conference
154    {
155        query.prepare("UPDATE CONFERENCE set title=:title, url=:url, subtitle=:subtitle, venue=:venue, city=:city, start=:start, end=:end,"
156                                            "day_change=:day_change, timeslot_duration=:timeslot_duration, active=:active "
157                      "WHERE id=:id");
158        foreach (QString prop_name, (QList<QString>() << "title" << "url" << "subtitle" << "venue" << "city")) {
159            query.bindValue(QString(":") + prop_name, aConference[prop_name]);
160        }
161        query.bindValue(":start", QDateTime(QDate::fromString(aConference["start"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
162        query.bindValue(":end", QDateTime(QDate::fromString(aConference["end"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
163        query.bindValue(":day_change", -QTime::fromString(aConference["day_change"],TIME_FORMAT).secsTo(QTime(0,0)));
164        query.bindValue(":timeslot_duration", -QTime::fromString(aConference["timeslot_duration"],TIME_FORMAT).secsTo(QTime(0,0)));
165        query.bindValue(":active", 1);
166        query.bindValue(":id", conferenceId);
167        query.exec();
168        emitSqlQueryError(query);
169        aConference["id"] = QVariant(conferenceId).toString();
170    }
171}
172
173
174void SqlEngine::addEventToDB(QHash<QString,QString> &aEvent) {
175    //insert event track to table and get track id
176    int conference = aEvent["conference_id"].toInt();
177    QString name = aEvent["track"];
178    Track track;
179    int trackId;
180    try
181    {
182        track = Track::retrieveByName(conference, name);
183        trackId = track.id();
184    }
185    catch (OrmNoObjectException &e) {
186        track.setConference(conference);
187        track.setName(name);
188        trackId = track.insert();
189    }
190    QDateTime startDateTime;
191    startDateTime.setTimeSpec(Qt::UTC);
192    startDateTime = QDateTime(QDate::fromString(aEvent["date"],DATE_FORMAT),QTime::fromString(aEvent["start"],TIME_FORMAT),Qt::UTC);
193
194    bool event_exists = false;
195    {
196        QSqlQuery check_event_query;
197        check_event_query.prepare("SELECT * FROM EVENT WHERE xid_conference = :xid_conference AND id = :id");
198        check_event_query.bindValue(":xid_conference", aEvent["conference_id"]);
199        check_event_query.bindValue(":id", aEvent["id"]);
200        if (!check_event_query.exec()) {
201            qWarning() << "check event failed, conference id:" << aEvent["xid_conference"]
202                    << "event id:" << aEvent["id"]
203                    << "error:" << check_event_query.lastError()
204                    ;
205            return;
206        }
207        if (check_event_query.isActive() and check_event_query.isSelect() and check_event_query.next()) {
208            event_exists = true;
209        }
210    }
211
212    QSqlQuery result;
213    if (event_exists) {
214        result.prepare("UPDATE EVENT SET"
215                        " start = :start"
216                        ", duration = :duration"
217                        ", xid_track = :xid_track"
218                        ", type = :type"
219                        ", language = :language"
220                        ", tag = :tag"
221                        ", title = :title"
222                        ", subtitle = :subtitle"
223                        ", abstract = :abstract"
224                        ", description = :description"
225                            " WHERE id = :id AND xid_conference = :xid_conference");
226    } else {
227        result.prepare("INSERT INTO EVENT "
228                        " (xid_conference, id, start, duration, xid_track, type, "
229                            " language, tag, title, subtitle, abstract, description) "
230                        " VALUES (:xid_conference, :id, :start, :duration, :xid_track, :type, "
231                            ":language, :tag, :title, :subtitle, :abstract, :description)");
232    }
233    result.bindValue(":xid_conference", aEvent["conference_id"]);
234    result.bindValue(":start", QString::number(startDateTime.toTime_t()));
235    result.bindValue(":duration", -QTime::fromString(aEvent["duration"],TIME_FORMAT).secsTo(QTime(0,0)));
236    result.bindValue(":xid_track", trackId);
237    static const QList<QString> props = QList<QString>()
238        << "id" << "type" << "language" << "tag" << "title" << "subtitle" << "abstract" << "description";
239    foreach (QString prop_name, props) {
240        result.bindValue(QString(":") + prop_name, aEvent[prop_name]);
241    }
242    if (!result.exec()) {
243        qWarning() << "event insert/update failed:" << result.lastError();
244    }
245}
246
247
248void SqlEngine::addPersonToDB(QHash<QString,QString> &aPerson) {
249    QSqlQuery query(db);
250    query.prepare("INSERT INTO PERSON (xid_conference,id,name) VALUES (:xid_conference, :id, :name)");
251    query.bindValue(":xid_conference", aPerson["conference_id"]);
252    query.bindValue(":id", aPerson["id"]);
253    query.bindValue(":name", aPerson["name"]);
254    query.exec(); // TODO some queries fail due to the unique key constraint
255    // if (!query.exec()) qDebug() << "SQL query 'insert into person' failed: " << query.lastError();
256
257    query = QSqlQuery(db);
258    query.prepare("INSERT INTO EVENT_PERSON (xid_conference,xid_event,xid_person) VALUES (:xid_conference, :xid_event, :xid_person)");
259    query.bindValue(":xid_conference", aPerson["conference_id"]);
260    query.bindValue(":xid_event", aPerson["event_id"]);
261    query.bindValue(":xid_person", aPerson["id"]);
262    query.exec(); // TODO some queries fail due to the unique key constraint
263    // if (!query.exec()) qDebug() << "SQL query 'insert into event_person' failed: " << query.lastError();
264}
265
266
267void SqlEngine::addRoomToDB(QHash<QString,QString> &aRoom) {
268    QSqlQuery query(db);
269    query.prepare("SELECT id FROM ROOM WHERE xid_conference=:conference_id and name=:name");
270    query.bindValue(":conference_id", aRoom["conference_id"]);
271    query.bindValue(":name", aRoom["name"]);
272    query.exec();
273    emitSqlQueryError(query);
274    // now we have to check whether ROOM record with 'name' exists or not,
275    // - if it doesn't exist yet, then we have to add that record to 'ROOM' table
276    //   and assign autoincremented 'id' to aRoom
277    // - if it exists, then we need to get its 'id' and assign it to aRoom
278    aRoom["id"] = "";
279    if(query.next()) // ROOM record with 'name' already exists: we need to get its 'id'
280    {
281        aRoom["id"] = query.value(0).toString();
282    }
283    else // ROOM record doesn't exist yet, need to create it
284    {
285        query = QSqlQuery(db);
286        query.prepare("INSERT INTO ROOM (xid_conference,name) VALUES (:xid_conference, :name)");
287        query.bindValue(":xid_conference", aRoom["conference_id"]);
288        query.bindValue(":xid_name", aRoom["name"]);
289        query.exec();
290        emitSqlQueryError(query);
291        aRoom["id"]= query.lastInsertId().toString(); // 'id' is assigned automatically
292        //LOG_AUTOTEST(query);
293    }
294
295    // remove previous conference/room records; room names might have changed
296    query = QSqlQuery(db);
297    query.prepare("DELETE FROM EVENT_ROOM WHERE xid_conference=:conference_id AND xid_event=:event_id");
298    query.bindValue(":conference_id", aRoom["conference_id"]);
299    query.bindValue(":event_id", aRoom["event_id"]);
300    query.exec();
301    emitSqlQueryError(query);
302    // and insert new ones
303    query = QSqlQuery(db);
304    query.prepare("INSERT INTO EVENT_ROOM (xid_conference,xid_event,xid_room) VALUES (:conference_id, :event_id, :room_id)");
305    query.bindValue(":conference_id", aRoom["conference_id"]);
306    query.bindValue(":event_id", aRoom["event_id"]);
307    query.bindValue(":room_id", aRoom["id"]);
308    query.exec();
309    emitSqlQueryError(query);
310}
311
312
313void SqlEngine::addLinkToDB(QHash<QString,QString> &aLink) {
314    //TODO: check if the link doesn't exist before inserting
315    QSqlQuery query(db);
316    query.prepare("INSERT INTO LINK (xid_event, xid_conference, name, url) VALUES (:xid_event, :xid_conference, :name, :url)");
317    query.bindValue(":xid_event", aLink["event_id"]);
318    query.bindValue(":xid_conference", aLink["conference_id"]);
319    query.bindValue(":name", aLink["name"]);
320    query.bindValue(":url", aLink["url"]);
321    query.exec();
322    emitSqlQueryError(query);
323}
324
325
326bool SqlEngine::searchEvent(int aConferenceId, const QHash<QString,QString> &aColumns, const QString &aKeyword) {
327    if (aColumns.empty()) return false;
328
329    // DROP
330    QSqlQuery query(db);
331    query.exec("DROP TABLE IF EXISTS SEARCH_EVENT");
332    emitSqlQueryError(query);
333
334    // CREATE
335    query.exec("CREATE TEMP TABLE SEARCH_EVENT ( xid_conference INTEGER  NOT NULL, id INTEGER NOT NULL )");
336    emitSqlQueryError(query);
337
338    // INSERT
339    QString sql = QString("INSERT INTO SEARCH_EVENT ( xid_conference, id ) "
340                "SELECT DISTINCT EVENT.xid_conference, EVENT.id FROM EVENT ");
341    if( aColumns.contains("ROOM") ){
342        sql += "LEFT JOIN EVENT_ROOM ON ( EVENT.xid_conference = EVENT_ROOM.xid_conference AND EVENT.id = EVENT_ROOM.xid_event ) ";
343        sql += "LEFT JOIN ROOM ON ( EVENT_ROOM.xid_room = ROOM.id ) ";
344    }
345    if( aColumns.contains("PERSON") ){
346        sql += "LEFT JOIN EVENT_PERSON ON ( EVENT.xid_conference = EVENT_PERSON.xid_conference AND EVENT.id = EVENT_PERSON.xid_event ) ";
347        sql += "LEFT JOIN PERSON ON ( EVENT_PERSON.xid_person = PERSON.id ) ";
348    }
349    sql += QString("WHERE EVENT.xid_conference = %1 AND (").arg( aConferenceId );
350
351    QStringList searchKeywords = aKeyword.trimmed().split(QRegExp("\\s+"));
352    QStringList whereAnd;
353    for (int i=0; i < searchKeywords.count(); i++) {
354        QStringList whereOr;
355        foreach (QString table, aColumns.uniqueKeys()) {
356            foreach (QString column, aColumns.values(table)){
357                 whereOr.append(QString("%1.%2 LIKE '\%' || :%1%2%3 || '\%'").arg(table).arg(column).arg(i));
358            }
359        }
360        whereAnd.append(whereOr.join(" OR "));
361    }
362    sql += whereAnd.join(") AND (");
363    sql += QString(")");
364
365    query.prepare(sql);
366    for (int i = 0; i != searchKeywords.size(); ++i) {
367        QString keyword = searchKeywords[i];
368        foreach (QString table, aColumns.uniqueKeys()) {
369            foreach (QString column, aColumns.values(table)) {
370                query.bindValue(QString(":%1%2%3").arg(table).arg(column).arg(i), keyword );
371            }
372        }
373    }
374
375    bool success = query.exec();
376    emitSqlQueryError(query);
377    return success;
378}
379
380
381bool SqlEngine::beginTransaction() {
382    QSqlQuery query(db);
383    bool success = query.exec("BEGIN IMMEDIATE TRANSACTION");
384    emitSqlQueryError(query);
385    return success;
386}
387
388
389bool SqlEngine::commitTransaction() {
390    QSqlQuery query(db);
391    bool success = query.exec("COMMIT");
392    emitSqlQueryError(query);
393    return success;
394}
395
396
397bool SqlEngine::deleteConference(int id) {
398    QSqlQuery query(db);
399    bool success = query.exec("BEGIN IMMEDIATE TRANSACTION");
400    emitSqlQueryError(query);
401
402    QStringList sqlList;
403    sqlList << "DELETE FROM LINK WHERE xid_conference = ?"
404            << "DELETE FROM EVENT_ROOM WHERE xid_conference = ?"
405            << "DELETE FROM EVENT_PERSON WHERE xid_conference = ?"
406            << "DELETE FROM EVENT WHERE xid_conference = ?"
407            << "DELETE FROM ROOM WHERE xid_conference = ?"
408            << "DELETE FROM PERSON WHERE xid_conference = ?"
409            << "DELETE FROM TRACK WHERE xid_conference = ?"
410            << "DELETE FROM CONFERENCE WHERE id = ?";
411
412    foreach (const QString& sql, sqlList) {
413        query.prepare(sql);
414        query.bindValue(0, id);
415        success &= query.exec();
416        emitSqlQueryError(query);
417    }
418
419    success &= query.exec("COMMIT");
420    emitSqlQueryError(query);
421
422    return success;
423}
424
425
426void SqlEngine::emitSqlQueryError(const QSqlQuery &query) {
427    QSqlError error = query.lastError();
428    if (error.type() == QSqlError::NoError) return;
429    emit dbError(error.text());
430}
431
Note: See TracBrowser for help on using the repository browser.