source: src/sql/sqlengine.cpp @ 66698a6

qt5
Last change on this file since 66698a6 was 66698a6, checked in by gregor herrmann <gregoa@…>, 11 years ago

Avoid duplicate search results by using SELECT DISTINCT when filling the SEARCH_EVENT table.

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1/*
2 * Copyright (C) 2010 Ixonos Plc.
3 * Copyright (C) 2011 Philipp Spitzer, gregor herrmann
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)
39    : QObject(aParent)
40{
41}
42
43SqlEngine::~SqlEngine()
44{
45}
46
47QString SqlEngine::login(const QString &aDatabaseType, const QString &aDatabaseName)
48{
49    QSqlDatabase database = QSqlDatabase::addDatabase(aDatabaseType);
50    database.setDatabaseName(aDatabaseName);
51
52    bool result = false;
53    if(!QFile::exists(aDatabaseName)) // the DB (tables) doesn't exists, and so we have to create one
54    {
55        // create Db
56        if (!database.open()) qDebug() << "Could not open database" << database.lastError();
57        QFile file(":/create_tables.sql");
58        file.open(QIODevice::ReadOnly | QIODevice::Text);
59        QString allSqlStatements = file.readAll();
60        foreach(QString sql, allSqlStatements.split(";")) {
61            QSqlQuery query(database);
62            if (!query.exec(sql)) qDebug() << "Could not execute query" << query.lastError();
63        }
64    }
65    else
66    {
67        database.open();
68    }
69
70    //LOG_INFO(QString("Opening '%1' database '%2'").arg(aDatabaseType).arg(aDatabaseName));
71
72    return result ? QString() : database.lastError().text();
73}
74
75void SqlEngine::initialize()
76{
77    QString databaseName;
78    QString dataDirName;
79    dataDirName = QDesktopServices::storageLocation(QDesktopServices::DataLocation);
80    QDir dataDir = QDir(dataDirName).absolutePath();
81    if(!dataDir.exists())
82        dataDir.mkpath(dataDirName);
83    databaseName = dataDirName + "/ConfClerk.sqlite";
84    login("QSQLITE",databaseName);
85}
86
87void SqlEngine::addConferenceToDB(QHash<QString,QString> &aConference)
88{
89    QSqlDatabase db = QSqlDatabase::database();
90
91    if (db.isValid() && db.isOpen())
92    {
93        int confId = 0;
94        QList<Conference> confsList = Conference::getAll();
95        if(confsList.count())
96        {
97            QListIterator<Conference> i(confsList);
98            while (i.hasNext())
99            {
100                Conference conf = i.next();
101                if( aConference["title"] == conf.title() )
102                {
103                    confId = conf.id();
104                    aConference["id"] = QString::number(confId);
105                    break;
106                }
107            }
108        }
109
110        if(!confId) // conference 'aConference' isn't in the table => insert
111        {
112            QSqlQuery query(db);
113            query.prepare("INSERT INTO CONFERENCE (title,url,subtitle,venue,city,start,end,days,"
114                                                    "day_change,timeslot_duration,active) "
115                            " VALUES (:title,:url,:subtitle,:venue,:city,:start,:end,:days,"
116                                                    ":day_change,:timeslot_duration,:active)");
117            foreach (QString prop_name, (QList<QString>() << "title" << "url" << "subtitle" << "venue" << "city" << "days")) {
118                query.bindValue(QString(":") + prop_name, aConference[prop_name]);
119            }
120            query.bindValue(":start", QDateTime(QDate::fromString(aConference["start"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
121            query.bindValue(":end", QDateTime(QDate::fromString(aConference["end"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
122            query.bindValue(":day_change", -QTime::fromString(aConference["day_change"],TIME_FORMAT).secsTo(QTime(0,0)));
123            query.bindValue(":day_change", -QTime::fromString(aConference["timeslot_duration"],TIME_FORMAT).secsTo(QTime(0,0)));
124            query.bindValue(":active", confsList.count() > 0 ? 0 : 1);
125            if (!query.exec()) qDebug() << "Could not execute query to insert a conference:" << query.lastError();
126            aConference["id"] = query.lastInsertId().toString(); // 'id' is assigned automatically
127        }
128    }
129}
130
131void SqlEngine::addEventToDB(QHash<QString,QString> &aEvent)
132{
133    QSqlDatabase db = QSqlDatabase::database();
134
135    if (db.isValid() && db.isOpen())
136    {
137        //insert event track to table and get track id
138        int conference = aEvent["conference_id"].toInt();
139        QString name = aEvent["track"];
140        Track track;
141        int trackId;
142        try
143        {
144            track = Track::retrieveByName(conference, name);
145            trackId = track.id();
146        }
147        catch (OrmNoObjectException &e) {
148            track.setConference(conference);
149            track.setName(name);
150            trackId = track.insert();
151        }
152        QDateTime startDateTime;
153        startDateTime.setTimeSpec(Qt::UTC);
154        startDateTime = QDateTime(QDate::fromString(aEvent["date"],DATE_FORMAT),QTime::fromString(aEvent["start"],TIME_FORMAT),Qt::UTC);
155
156        bool event_exists = false;
157        {
158            QSqlQuery check_event_query;
159            check_event_query.prepare("SELECT * FROM EVENT WHERE xid_conference = :xid_conference AND id = :id");
160            check_event_query.bindValue(":xid_conference", aEvent["conference_id"]);
161            check_event_query.bindValue(":id", aEvent["id"]);
162            if (!check_event_query.exec()) {
163                qWarning() << "check event failed, conference id:" << aEvent["xid_conference"]
164                        << "event id:" << aEvent["id"]
165                        << "error:" << check_event_query.lastError()
166                        ;
167                return;
168            }
169            if (check_event_query.isActive() and check_event_query.isSelect() and check_event_query.next()) {
170                event_exists = true;
171            }
172        }
173
174        QSqlQuery result;
175        if (event_exists) {
176            result.prepare("UPDATE EVENT SET"
177                            " start = :start"
178                            ", duration = :duration"
179                            ", xid_track = :xid_track"
180                            ", type = :type"
181                            ", language = :language"
182                            ", tag = :tag"
183                            ", title = :title"
184                            ", subtitle = :subtitle"
185                            ", abstract = :abstract"
186                            ", description = :description"
187                                " WHERE id = :id AND xid_conference = :xid_conference");
188        } else {
189            result.prepare("INSERT INTO EVENT "
190                            " (xid_conference, id, start, duration, xid_track, type, "
191                                " language, tag, title, subtitle, abstract, description) "
192                            " VALUES (:xid_conference, :id, :start, :duration, :xid_track, :type, "
193                                ":language, :tag, :title, :subtitle, :abstract, :description)");
194        }
195        result.bindValue(":xid_conference", aEvent["conference_id"]);
196        result.bindValue(":start", QString::number(startDateTime.toTime_t()));
197        result.bindValue(":duration", -QTime::fromString(aEvent["duration"],TIME_FORMAT).secsTo(QTime(0,0)));
198        result.bindValue(":xid_track", trackId);
199        static const QList<QString> props = QList<QString>()
200            << "id" << "type" << "language" << "tag" << "title" << "subtitle" << "abstract" << "description";
201        foreach (QString prop_name, props) {
202            result.bindValue(QString(":") + prop_name, aEvent[prop_name]);
203        }
204        if (!result.exec()) {
205            qWarning() << "event insert/update failed:" << result.lastError();
206        }
207    }
208}
209
210void SqlEngine::addPersonToDB(QHash<QString,QString> &aPerson)
211{
212    QSqlDatabase db = QSqlDatabase::database();
213
214    if (db.isValid() && db.isOpen())
215    {
216        QSqlQuery query(db);
217        query.prepare("INSERT INTO PERSON (xid_conference,id,name) VALUES (:xid_conference, :id, :name)");
218        query.bindValue(":xid_conference", aPerson["conference_id"]);
219        query.bindValue(":id", aPerson["id"]);
220        query.bindValue(":name", aPerson["name"]);
221        query.exec(); // some queries fail due to the unique key constraint
222        // if (!query.exec()) qDebug() << "SQL query 'insert into person' failed: " << query.lastError();
223
224        query = QSqlQuery(db);
225        query.prepare("INSERT INTO EVENT_PERSON (xid_conference,xid_event,xid_person) VALUES (:xid_conference, :xid_event, :xid_person)");
226        query.bindValue(":xid_conference", aPerson["conference_id"]);
227        query.bindValue(":xid_event", aPerson["event_id"]);
228        query.bindValue(":xid_person", aPerson["id"]);
229        query.exec(); // some queries fail due to the unique key constraint
230        // if (!query.exec()) qDebug() << "SQL query 'insert into event_person' failed: " << query.lastError();
231    }
232}
233
234void SqlEngine::addRoomToDB(QHash<QString,QString> &aRoom)
235{
236    QSqlDatabase db = QSqlDatabase::database();
237
238    if (db.isValid() && db.isOpen())
239    {
240        QSqlQuery query(db);
241        query.prepare("SELECT id FROM ROOM WHERE xid_conference=:conference_id and name=:name");
242        query.bindValue(":conference_id", aRoom["conference_id"]);
243        query.bindValue(":name", aRoom["name"]);
244        if (!query.exec()) qDebug() << "Could not execute select room query: " << query.lastError();
245        // now we have to check whether ROOM record with 'name' exists or not,
246        // - if it doesn't exist yet, then we have to add that record to 'ROOM' table
247        //   and assign autoincremented 'id' to aRoom
248        // - if it exists, then we need to get its 'id' and assign it to aRoom
249        aRoom["id"] = "";
250        if(query.next()) // ROOM record with 'name' already exists: we need to get its 'id'
251        {
252            aRoom["id"] = query.value(0).toString();
253        }
254        else // ROOM record doesn't exist yet, need to create it
255        {
256            query = QSqlQuery(db);
257            query.prepare("INSERT INTO ROOM (xid_conference,name,picture) VALUES (:xid_conference, :name, '')");
258            query.bindValue(":xid_conference", aRoom["conference_id"]);
259            query.bindValue(":xid_name", aRoom["name"]);
260            if (!query.exec()) qDebug() << "Could not execute 'insert into room ...' query." << query.lastError();
261            aRoom["id"]= query.lastInsertId().toString(); // 'id' is assigned automatically
262            //LOG_AUTOTEST(query);
263        }
264        query = QSqlQuery(db);
265        query.prepare("INSERT INTO EVENT_ROOM (xid_conference,xid_event,xid_room) VALUES (:conference_id, :event_id, :room_id)");
266        query.bindValue(":conference_id", aRoom["conference_id"]);
267        query.bindValue(":event_id", aRoom["event_id"]);
268        query.bindValue(":room_id", aRoom["id"]);
269        if (!query.exec()) qDebug() << "Could not 'execute insert into event_room' query:" << query.lastError();
270    }
271}
272
273void SqlEngine::addLinkToDB(QHash<QString,QString> &aLink)
274{
275    QSqlDatabase db = QSqlDatabase::database();
276
277    //TODO: check if the link doesn't exist before inserting
278    if (db.isValid() && db.isOpen())
279    {
280        QSqlQuery query(db);
281        query.prepare("INSERT INTO LINK (xid_event, xid_conference, name, url) VALUES (:xid_event, :xid_conference, :name, :url)");
282        query.bindValue(":xid_event", aLink["event_id"]);
283        query.bindValue(":xid_conference", aLink["conference_id"]);
284        query.bindValue(":name", aLink["name"]);
285        query.bindValue(":url", aLink["url"]);
286        if (!query.exec()) qDebug() << "Error executing 'insert into link' query: " << query.lastError();
287    }
288}
289
290int SqlEngine::searchEvent(int aConferenceId, const QHash<QString,QString> &aColumns, const QString &aKeyword)
291{
292    QSqlDatabase db = QSqlDatabase::database();
293
294    if ( !db.isValid() || !db.isOpen())
295        return -1;
296
297    if (aColumns.empty()) return -1;
298
299    // DROP
300    execQuery( db, "DROP TABLE IF EXISTS SEARCH_EVENT");
301    // CREATE
302    execQuery( db, "CREATE TABLE SEARCH_EVENT ( xid_conference INTEGER  NOT NULL, id INTEGER NOT NULL )");
303    // INSERT
304    QString sql = QString("INSERT INTO SEARCH_EVENT ( xid_conference, id ) "
305                "SELECT DISTINCT EVENT.xid_conference, EVENT.id FROM EVENT ");
306    if( aColumns.contains("ROOM") ){
307        sql += "INNER JOIN EVENT_ROOM ON ( EVENT.xid_conference = EVENT_ROOM.xid_conference AND EVENT.id = EVENT_ROOM.xid_event ) ";
308        sql += "INNER JOIN ROOM ON ( EVENT_ROOM.xid_room = ROOM.id ) ";
309    }
310    if( aColumns.contains("PERSON") ){
311        sql += "INNER JOIN EVENT_PERSON ON ( EVENT.xid_conference = EVENT_PERSON.xid_conference AND EVENT.id = EVENT_PERSON.xid_event ) ";
312        sql += "INNER JOIN PERSON ON ( EVENT_PERSON.xid_person = PERSON.id ) ";
313    }
314    sql += QString("WHERE EVENT.xid_conference = %1 AND (").arg( aConferenceId );
315
316    foreach (QString table, aColumns.uniqueKeys()){
317        foreach (QString column, aColumns.values(table)){
318            sql += QString("%1.%2 LIKE '\%' || :%1%2 || '\%' OR ").arg( table, column );
319        }
320    }
321    sql.chop( QString(" OR ").length() );
322    sql += QString(")");
323
324    QSqlQuery query(db);
325    query.prepare(sql);
326    foreach (QString table, aColumns.uniqueKeys()){
327        foreach (QString column, aColumns.values(table)){
328            query.bindValue(QString(":%1%2").arg(table, column), aKeyword );
329        }
330    }
331
332    if( !query.exec() ){
333       qDebug() << "Could not execute search query: " << query.lastError().text();
334       return -1;
335    }
336
337    return 1;
338}
339
340bool SqlEngine::beginTransaction()
341{
342    QSqlDatabase db = QSqlDatabase::database();
343
344    return execQuery(db, "BEGIN IMMEDIATE TRANSACTION");
345}
346
347bool SqlEngine::commitTransaction()
348{
349    QSqlDatabase db = QSqlDatabase::database();
350
351    return execQuery(db, "COMMIT");
352}
353
354void SqlEngine::deleteConference(int id)
355{
356    QSqlDatabase db = QSqlDatabase::database();
357
358    if ( !db.isValid() || !db.isOpen()) {
359        return;
360    }
361
362    beginTransaction();
363
364    QHash<QString, QVariant> params;
365    params["xid_conference"] = id;
366    execQueryWithParameter(db, "DELETE FROM LINK WHERE xid_conference = :xid_conference", params);
367    execQueryWithParameter(db, "DELETE FROM EVENT_ROOM WHERE xid_conference = :xid_conference", params);
368    execQueryWithParameter(db, "DELETE FROM EVENT_PERSON WHERE xid_conference = :xid_conference", params);
369    execQueryWithParameter(db, "DELETE FROM EVENT WHERE xid_conference = :xid_conference", params);
370    execQueryWithParameter(db, "DELETE FROM ROOM WHERE xid_conference = :xid_conference", params);
371    execQueryWithParameter(db, "DELETE FROM PERSON WHERE xid_conference = :xid_conference", params);
372    execQueryWithParameter(db, "DELETE FROM TRACK WHERE xid_conference = :xid_conference", params);
373    execQueryWithParameter(db, "DELETE FROM CONFERENCE WHERE id = :xid_conference", params);
374
375    commitTransaction();
376}
377
378bool SqlEngine::execQuery(QSqlDatabase &aDatabase, const QString &aQuery)
379{
380    QSqlQuery sqlQuery(aDatabase);
381    if( !sqlQuery.exec(aQuery) ){
382       qDebug() << "SQL ERR: " << sqlQuery.lastError().number() << ", " << sqlQuery.lastError().text();
383       return false;
384    }
385    return true;
386}
387
388bool SqlEngine::execQueryWithParameter(QSqlDatabase &aDatabase, const QString &aQuery, const QHash<QString, QVariant>& params)
389{
390    QSqlQuery sqlQuery(aDatabase);
391    sqlQuery.prepare(aQuery);
392    foreach (QString param_key, params.keys()) {
393        sqlQuery.bindValue(param_key, params[param_key]);
394    }
395    if( !sqlQuery.exec() ){
396       qDebug() << "SQL ERR: " << sqlQuery.lastError().number() << ", " << sqlQuery.lastError().text();
397       return false;
398    }
399    return true;
400}
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