/*
* Copyright (C) 2010 Ixonos Plc.
* Copyright (C) 2011-2014 Philipp Spitzer, gregor herrmann, Stefan Stahl
*
* This file is part of ConfClerk.
*
* ConfClerk is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation, either version 2 of the License, or (at your option)
* any later version.
*
* ConfClerk is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* ConfClerk. If not, see .
*/
#include
#include
#include
#include
#include
#include
#include
#include "sqlengine.h"
#include "track.h"
#include "conference.h"
#include
const QString DATE_FORMAT ("yyyy-MM-dd");
const QString TIME_FORMAT ("hh:mm");
SqlEngine::SqlEngine(QObject *aParent): QObject(aParent) {
QDir dbPath(QDesktopServices::storageLocation(QDesktopServices::DataLocation));
dbFilename = dbPath.absoluteFilePath("ConfClerk.sqlite");
}
SqlEngine::~SqlEngine() {
}
void SqlEngine::open() {
// we may have to create the directory of the database
QFileInfo dbFilenameInfo(dbFilename);
QDir cwd;
cwd.mkpath(dbFilenameInfo.absolutePath());
// We don't have to handle errors because in worst case, opening the database will fail
// and db.isOpen() returns false.
db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(dbFilename);
db.open();
}
int SqlEngine::dbSchemaVersion() {
QSqlQuery query(db);
if (!query.exec("PRAGMA user_version")) {
emitSqlQueryError(query);
return -2;
}
query.first();
int version = query.value(0).toInt();
if (version == 0) {
// check whether the tables are existing
if (!query.exec("select count(*) from sqlite_master where name='CONFERENCE'")) {
emitSqlQueryError(query);
return -2;
}
query.first();
if (query.value(0).toInt() == 1) return 0; // tables are existing
return -1; // database seems to be empty (or has other tables)
}
return version;
}
bool SqlEngine::updateDbSchemaVersion000To001() {
return applySqlFile(":/dbschema000to001.sql");
}
bool SqlEngine::createCurrentDbSchema() {
return applySqlFile(":/dbschema001.sql");
}
bool SqlEngine::createOrUpdateDbSchema() {
int version = dbSchemaVersion();
switch (version) {
case -2:
// the error has already been emitted by the previous function
return false;
case -1:
// empty database
return createCurrentDbSchema();
case 0:
// db schema version 0
return updateDbSchemaVersion000To001();
case 1:
// current schema
return true;
default:
// unsupported schema
emit dbError(tr("Unsupported database schema version %1.").arg(version));
}
return false;
}
bool SqlEngine::applySqlFile(const QString sqlFile) {
QFile file(sqlFile);
file.open(QIODevice::ReadOnly | QIODevice::Text);
QString allSqlStatements = file.readAll();
QSqlQuery query(db);
foreach(QString sql, allSqlStatements.split(";")) {
if (sql.trimmed().isEmpty()) // do not execute empty queries like the last character from create_tables.sql
continue;
if (!query.exec(sql)) {
emitSqlQueryError(query);
return false;
}
}
return true;
}
void SqlEngine::addConferenceToDB(QHash &aConference, int conferenceId) {
QSqlQuery query(db);
if (conferenceId <= 0) // insert conference
{
query.prepare("INSERT INTO CONFERENCE (title,url,subtitle,venue,city,start,end,"
"day_change,timeslot_duration,active) "
" VALUES (:title,:url,:subtitle,:venue,:city,:start,:end,"
":day_change,:timeslot_duration,:active)");
foreach (QString prop_name, (QList() << "title" << "url" << "subtitle" << "venue" << "city")) {
query.bindValue(QString(":") + prop_name, aConference[prop_name]);
}
query.bindValue(":start", QDateTime(QDate::fromString(aConference["start"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
query.bindValue(":end", QDateTime(QDate::fromString(aConference["end"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
query.bindValue(":day_change", -QTime::fromString(aConference["day_change"],TIME_FORMAT).secsTo(QTime(0,0)));
query.bindValue(":timeslot_duration", -QTime::fromString(aConference["timeslot_duration"],TIME_FORMAT).secsTo(QTime(0,0)));
query.bindValue(":active", 1);
query.exec();
emitSqlQueryError(query);
aConference["id"] = query.lastInsertId().toString(); // 'id' is assigned automatically
}
else // update conference
{
query.prepare("UPDATE CONFERENCE set title=:title, url=:url, subtitle=:subtitle, venue=:venue, city=:city, start=:start, end=:end,"
"day_change=:day_change, timeslot_duration=:timeslot_duration, active=:active "
"WHERE id=:id");
foreach (QString prop_name, (QList() << "title" << "url" << "subtitle" << "venue" << "city")) {
query.bindValue(QString(":") + prop_name, aConference[prop_name]);
}
query.bindValue(":start", QDateTime(QDate::fromString(aConference["start"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
query.bindValue(":end", QDateTime(QDate::fromString(aConference["end"],DATE_FORMAT),QTime(0,0),Qt::UTC).toTime_t());
query.bindValue(":day_change", -QTime::fromString(aConference["day_change"],TIME_FORMAT).secsTo(QTime(0,0)));
query.bindValue(":timeslot_duration", -QTime::fromString(aConference["timeslot_duration"],TIME_FORMAT).secsTo(QTime(0,0)));
query.bindValue(":active", 1);
query.bindValue(":id", conferenceId);
query.exec();
emitSqlQueryError(query);
aConference["id"] = QVariant(conferenceId).toString();
}
}
void SqlEngine::addEventToDB(QHash &aEvent) {
int conferenceId = aEvent["conference_id"].toInt();
Conference conference = Conference::getById(conferenceId);
// insert event track to table and get track id
Track track;
int trackId;
QString trackName = aEvent["track"];
try
{
track = Track::retrieveByName(conferenceId, trackName);
trackId = track.id();
}
catch (OrmNoObjectException &e) {
track.setConference(conferenceId);
track.setName(trackName);
trackId = track.insert();
}
QDate startDate = QDate::fromString(aEvent["date"], DATE_FORMAT);
QTime startTime = QTime::fromString(aEvent["start"], TIME_FORMAT);
// consider day_change (note that if day_change is e.g. at 04:00 AM, an event starting at 02:00 AM has the previous date in the XML file)
if (startTime < conference.dayChangeTime()) startDate = startDate.addDays(1);
QDateTime startDateTime;
startDateTime.setTimeSpec(Qt::UTC);
startDateTime = QDateTime(startDate, startTime, Qt::UTC);
bool event_exists = false;
{
QSqlQuery check_event_query;
check_event_query.prepare("SELECT * FROM EVENT WHERE xid_conference = :xid_conference AND id = :id");
check_event_query.bindValue(":xid_conference", aEvent["conference_id"]);
check_event_query.bindValue(":id", aEvent["id"]);
if (!check_event_query.exec()) {
qWarning() << "check event failed, conference id:" << aEvent["xid_conference"]
<< "event id:" << aEvent["id"]
<< "error:" << check_event_query.lastError()
;
return;
}
if (check_event_query.isActive() and check_event_query.isSelect() and check_event_query.next()) {
event_exists = true;
}
}
QSqlQuery result;
if (event_exists) {
result.prepare("UPDATE EVENT SET"
" start = :start"
", duration = :duration"
", xid_track = :xid_track"
", type = :type"
", language = :language"
", tag = :tag"
", title = :title"
", subtitle = :subtitle"
", abstract = :abstract"
", description = :description"
" WHERE id = :id AND xid_conference = :xid_conference");
} else {
result.prepare("INSERT INTO EVENT "
" (xid_conference, id, start, duration, xid_track, type, "
" language, tag, title, subtitle, abstract, description) "
" VALUES (:xid_conference, :id, :start, :duration, :xid_track, :type, "
":language, :tag, :title, :subtitle, :abstract, :description)");
}
result.bindValue(":xid_conference", aEvent["conference_id"]);
result.bindValue(":start", QString::number(startDateTime.toTime_t()));
result.bindValue(":duration", -QTime::fromString(aEvent["duration"],TIME_FORMAT).secsTo(QTime(0,0)));
result.bindValue(":xid_track", trackId);
static const QList props = QList()
<< "id" << "type" << "language" << "tag" << "title" << "subtitle" << "abstract" << "description";
foreach (QString prop_name, props) {
result.bindValue(QString(":") + prop_name, aEvent[prop_name]);
}
if (!result.exec()) {
qWarning() << "event insert/update failed:" << result.lastError();
}
}
void SqlEngine::addPersonToDB(QHash &aPerson) {
QSqlQuery query(db);
query.prepare("INSERT INTO PERSON (xid_conference,id,name) VALUES (:xid_conference, :id, :name)");
query.bindValue(":xid_conference", aPerson["conference_id"]);
query.bindValue(":id", aPerson["id"]);
query.bindValue(":name", aPerson["name"]);
query.exec(); // TODO some queries fail due to the unique key constraint
// if (!query.exec()) qDebug() << "SQL query 'insert into person' failed: " << query.lastError();
query = QSqlQuery(db);
query.prepare("INSERT INTO EVENT_PERSON (xid_conference,xid_event,xid_person) VALUES (:xid_conference, :xid_event, :xid_person)");
query.bindValue(":xid_conference", aPerson["conference_id"]);
query.bindValue(":xid_event", aPerson["event_id"]);
query.bindValue(":xid_person", aPerson["id"]);
query.exec(); // TODO some queries fail due to the unique key constraint
// if (!query.exec()) qDebug() << "SQL query 'insert into event_person' failed: " << query.lastError();
}
void SqlEngine::addRoomToDB(QHash &aRoom) {
QSqlQuery query(db);
query.prepare("SELECT id FROM ROOM WHERE xid_conference=:conference_id and name=:name");
query.bindValue(":conference_id", aRoom["conference_id"]);
query.bindValue(":name", aRoom["name"]);
query.exec();
emitSqlQueryError(query);
// now we have to check whether ROOM record with 'name' exists or not,
// - if it doesn't exist yet, then we have to add that record to 'ROOM' table
// and assign autoincremented 'id' to aRoom
// - if it exists, then we need to get its 'id' and assign it to aRoom
aRoom["id"] = "";
if(query.next()) // ROOM record with 'name' already exists: we need to get its 'id'
{
aRoom["id"] = query.value(0).toString();
}
else // ROOM record doesn't exist yet, need to create it
{
query = QSqlQuery(db);
query.prepare("INSERT INTO ROOM (xid_conference,name) VALUES (:xid_conference, :name)");
query.bindValue(":xid_conference", aRoom["conference_id"]);
query.bindValue(":name", aRoom["name"]);
query.exec();
emitSqlQueryError(query);
aRoom["id"]= query.lastInsertId().toString(); // 'id' is assigned automatically
//LOG_AUTOTEST(query);
}
// remove previous conference/room records; room names might have changed
query = QSqlQuery(db);
query.prepare("DELETE FROM EVENT_ROOM WHERE xid_conference=:conference_id AND xid_event=:event_id");
query.bindValue(":conference_id", aRoom["conference_id"]);
query.bindValue(":event_id", aRoom["event_id"]);
query.exec();
emitSqlQueryError(query);
// and insert new ones
query = QSqlQuery(db);
query.prepare("INSERT INTO EVENT_ROOM (xid_conference,xid_event,xid_room) VALUES (:conference_id, :event_id, :room_id)");
query.bindValue(":conference_id", aRoom["conference_id"]);
query.bindValue(":event_id", aRoom["event_id"]);
query.bindValue(":room_id", aRoom["id"]);
query.exec();
emitSqlQueryError(query);
}
void SqlEngine::addLinkToDB(QHash &aLink) {
//TODO: check if the link doesn't exist before inserting
QSqlQuery query(db);
query.prepare("INSERT INTO LINK (xid_event, xid_conference, name, url) VALUES (:xid_event, :xid_conference, :name, :url)");
query.bindValue(":xid_event", aLink["event_id"]);
query.bindValue(":xid_conference", aLink["conference_id"]);
query.bindValue(":name", aLink["name"]);
query.bindValue(":url", aLink["url"]);
query.exec();
emitSqlQueryError(query);
}
bool SqlEngine::searchEvent(int aConferenceId, const QHash &aColumns, const QString &aKeyword) {
if (aColumns.empty()) return false;
// DROP
QSqlQuery query(db);
query.exec("DROP TABLE IF EXISTS SEARCH_EVENT");
emitSqlQueryError(query);
// CREATE
query.exec("CREATE TEMP TABLE SEARCH_EVENT ( xid_conference INTEGER NOT NULL, id INTEGER NOT NULL )");
emitSqlQueryError(query);
// INSERT
QString sql = QString("INSERT INTO SEARCH_EVENT ( xid_conference, id ) "
"SELECT DISTINCT EVENT.xid_conference, EVENT.id FROM EVENT ");
if( aColumns.contains("ROOM") ){
sql += "LEFT JOIN EVENT_ROOM ON ( EVENT.xid_conference = EVENT_ROOM.xid_conference AND EVENT.id = EVENT_ROOM.xid_event ) ";
sql += "LEFT JOIN ROOM ON ( EVENT_ROOM.xid_room = ROOM.id ) ";
}
if( aColumns.contains("PERSON") ){
sql += "LEFT JOIN EVENT_PERSON ON ( EVENT.xid_conference = EVENT_PERSON.xid_conference AND EVENT.id = EVENT_PERSON.xid_event ) ";
sql += "LEFT JOIN PERSON ON ( EVENT_PERSON.xid_person = PERSON.id ) ";
}
sql += QString("WHERE EVENT.xid_conference = %1 AND (").arg( aConferenceId );
QStringList searchKeywords = aKeyword.trimmed().split(QRegExp("\\s+"));
QStringList whereAnd;
for (int i=0; i < searchKeywords.count(); i++) {
QStringList whereOr;
foreach (QString table, aColumns.uniqueKeys()) {
foreach (QString column, aColumns.values(table)){
whereOr.append(QString("%1.%2 LIKE '\%' || :%1%2%3 || '\%'").arg(table).arg(column).arg(i));
}
}
whereAnd.append(whereOr.join(" OR "));
}
sql += whereAnd.join(") AND (");
sql += QString(")");
query.prepare(sql);
for (int i = 0; i != searchKeywords.size(); ++i) {
QString keyword = searchKeywords[i];
foreach (QString table, aColumns.uniqueKeys()) {
foreach (QString column, aColumns.values(table)) {
query.bindValue(QString(":%1%2%3").arg(table).arg(column).arg(i), keyword );
}
}
}
bool success = query.exec();
emitSqlQueryError(query);
return success;
}
bool SqlEngine::beginTransaction() {
QSqlQuery query(db);
bool success = query.exec("BEGIN IMMEDIATE TRANSACTION");
emitSqlQueryError(query);
return success;
}
bool SqlEngine::commitTransaction() {
QSqlQuery query(db);
bool success = query.exec("COMMIT");
emitSqlQueryError(query);
return success;
}
bool SqlEngine::deleteConference(int id) {
QSqlQuery query(db);
bool success = query.exec("BEGIN IMMEDIATE TRANSACTION");
emitSqlQueryError(query);
QStringList sqlList;
sqlList << "DELETE FROM LINK WHERE xid_conference = ?"
<< "DELETE FROM EVENT_ROOM WHERE xid_conference = ?"
<< "DELETE FROM EVENT_PERSON WHERE xid_conference = ?"
<< "DELETE FROM EVENT WHERE xid_conference = ?"
<< "DELETE FROM ROOM WHERE xid_conference = ?"
<< "DELETE FROM PERSON WHERE xid_conference = ?"
<< "DELETE FROM TRACK WHERE xid_conference = ?"
<< "DELETE FROM CONFERENCE WHERE id = ?";
foreach (const QString& sql, sqlList) {
query.prepare(sql);
query.bindValue(0, id);
success &= query.exec();
emitSqlQueryError(query);
}
success &= query.exec("COMMIT");
emitSqlQueryError(query);
return success;
}
void SqlEngine::emitSqlQueryError(const QSqlQuery &query) {
QSqlError error = query.lastError();
if (error.type() == QSqlError::NoError) return;
emit dbError(error.text());
}