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databasebrowser.cpp
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/***************************************************************************
* This file is part of Saaghar, a Persian poetry software *
* *
* Copyright (C) 2010-2016 by S. Razi Alavizadeh *
* E-Mail: <[email protected]>, WWW: <http://pozh.org> *
* *
* This program 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 3 of the License, *
* (at your option) any later version *
* *
* This program 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 this program; if not, see http://www.gnu.org/licenses/ *
* *
***************************************************************************/
#include "databasebrowser.h"
#include "nodatabasedialog.h"
#include "searchresultwidget.h"
#include "tools.h"
#include "concurrenttasks.h"
#include "saagharapplication.h"
#include "settingsmanager.h"
#include "saagharwidget.h"
#include <QApplication>
#include <QMessageBox>
#include <QSqlQuery>
#include <QFileInfo>
#include <QFileDialog>
#include <QTime>
#include <QPushButton>
#include <QTimer>
#include <QTreeWidgetItem>
#include <QThread>
DatabaseBrowser* DatabaseBrowser::s_instance = 0;
QMultiHash<QThread*, QString> DatabaseBrowser::s_threadConnections;
DataBaseUpdater* DatabaseBrowser::dbUpdater = 0;
QString DatabaseBrowser::s_defaultConnectionId;
QString DatabaseBrowser::s_defaultDatabaseFileName;
bool DatabaseBrowser::s_isDefaultDatabaseSet = false;
const int minNewPoetID = 1001;
const int minNewCatID = 10001;
const int minNewPoemID = 100001;
const int DatabaseVersion = 1;
#ifdef EMBEDDED_SQLITE
QSQLiteDriver* DatabaseBrowser::sqlDriver = 0;
#else
const QString sqlDriver = "QSQLITE";
#endif
static QString threadToString(QThread* thread = 0)
{
return QString::number((quintptr)(thread ? thread : QThread::currentThread()));
}
DatabaseBrowser::DatabaseBrowser(const QString &sqliteDbCompletePath)
{
Q_ASSERT(s_instance == 0);
s_instance = this;
qRegisterMetaType<SearchResults>("SearchResults");
setObjectName(QLatin1String("DatabaseBrowser"));
QFileInfo dBFile(sqliteDbCompletePath);
QString pathOfDatabase = dBFile.absolutePath();
#ifdef EMBEDDED_SQLITE
sqlite3* connection;
sqlite3_open(sqliteDbCompletePath.toUtf8().data(), &connection);
sqlDriver = new QSQLiteDriver(connection);
#endif
QString defaultConnectionId = getIdForDataBase(sqliteDbCompletePath);
while (!dBFile.exists() || !database(defaultConnectionId).open() || !isValid(defaultConnectionId)) {
if (splashScreen(QWidget)) {
splashScreen(QWidget)->close();
Tools::setSplashScreen(0);
}
QString errorString = database(defaultConnectionId).lastError().text();
removeDatabase(defaultConnectionId);
NoDataBaseDialog noDataBaseDialog(0, Qt::WindowStaysOnTopHint);
noDataBaseDialog.ui->pathLabel->setText(tr("Data Base Path:") + " " + sqliteDbCompletePath);
noDataBaseDialog.ui->errorLabel->setText(tr("Error:") + " " + (errorString.isEmpty() ? tr("No Error!") : errorString));
QtWin::easyBlurUnBlur(&noDataBaseDialog, VARB("SaagharWindow/UseTransparecy"));
noDataBaseDialog.exec();
if (noDataBaseDialog.clickedButton() != noDataBaseDialog.ui->exitPushButton) {
if (noDataBaseDialog.clickedButton() == noDataBaseDialog.ui->selectDataBase) {
QString dir = QFileDialog::getExistingDirectory(0, tr("Add Path For Data Base"), dBFile.absoluteDir().path(), QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);
if (!dir.isEmpty()) {
dir.replace(QString("\\"), QString("/"));
if (!dir.endsWith('/')) {
dir += "/";
}
dBFile.setFile(dir + "/ganjoor.s3db");
//don't open it here!
defaultConnectionId = getIdForDataBase(dir + "/ganjoor.s3db");
pathOfDatabase = dir;
}
else {
QMessageBox::information(0, tr("Exit"), tr("Saaghar could not find database file and will be closed."));
exit(0);
}
}
else if (noDataBaseDialog.clickedButton() == noDataBaseDialog.ui->createDataBaseFromLocal
||
noDataBaseDialog.clickedButton() == noDataBaseDialog.ui->createDataBaseFromRemote) {
//do download job!!
QFileDialog getDir(0, tr("Select Save Location"), dBFile.absoluteDir().path());
getDir.setFileMode(QFileDialog::Directory);
getDir.setOptions(QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks /*| QFileDialog::DontUseNativeDialog*/);
getDir.setAcceptMode(QFileDialog::AcceptOpen);
if (getDir.exec() != QFileDialog::Accepted) {
QMessageBox::information(0, tr("Exit"), tr("Saaghar could not find database file and will be closed."));
exit(0);
}
QString dir = "";
if (!getDir.selectedFiles().isEmpty()) {
dir = getDir.selectedFiles().at(0);
}
while (dir.isEmpty() || QFile::exists(dir + "/ganjoor.s3db")) {
getDir.exec();
if (!getDir.selectedFiles().isEmpty()) {
dir = getDir.selectedFiles().at(0);
}
// dir = QFileDialog::getExistingDirectory(0,tr("Select Save Location"), dir.isEmpty() ? dBFile.absoluteDir().path() : dir, QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks | QFileDialog::DontUseNativeDialog);
}
// now dir is not empty and it doesn't contain 'ganjoor.s3db'
dir.replace(QString("\\"), QString("/"));
if (!dir.endsWith('/')) {
dir += "/";
}
dBFile.setFile(dir + "/ganjoor.s3db");
defaultConnectionId = getIdForDataBase(dir + "/ganjoor.s3db");
if (!database().open()) {
QMessageBox::information(0, tr("Cannot open Database File!"), tr("Cannot open database file, please check if you have write permisson.\nError: %1\nDataBase Path=%2").arg(errorString).arg(dir));
exit(1);
}
//insert main tables
bool tablesInserted = createEmptyDataBase(defaultConnectionId);
qDebug() << "insert main tables: " << tablesInserted;
if (!tablesInserted) {
QFile::remove(dir + "/ganjoor.s3db");
exit(1);
}
m_addRemoteDataSet = noDataBaseDialog.clickedButton() == noDataBaseDialog.ui->createDataBaseFromRemote;
QTimer::singleShot(0, this, SLOT(addDataSets()));
pathOfDatabase = dir;
}
}
else {
exit(1);
}
}
s_defaultConnectionId = defaultConnectionId;
// Saaghar just uses its first search path
sApp->setDefaultPath(SaagharApplication::DatabaseDirs, QDir::toNativeSeparators(pathOfDatabase));
cachedMaxCatID = cachedMaxPoemID = 0;
}
DatabaseBrowser::~DatabaseBrowser()
{
}
QString DatabaseBrowser::databaseFileFromID(const QString &connectionID)
{
return connectionID.left(connectionID.lastIndexOf(QLatin1String("/thread:")));
}
DatabaseBrowser* DatabaseBrowser::instance()
{
if (!s_instance) {
if (!s_isDefaultDatabaseSet) {
qFatal("In first place you have to use DatabaseBrowser::setDefaultDatabasename() to set default database.");
exit(1);
}
new DatabaseBrowser(s_defaultDatabaseFileName);
}
return s_instance;
}
QSqlDatabase DatabaseBrowser::database(const QString &connectionID, bool open)
{
return QSqlDatabase::database(connectionID, open);
}
QString DatabaseBrowser::defaultDatabasename()
{
return s_defaultDatabaseFileName;
}
void DatabaseBrowser::setDefaultDatabasename(const QString &databaseName)
{
s_isDefaultDatabaseSet = true;
s_defaultDatabaseFileName = databaseName;
}
bool DatabaseBrowser::isConnected(const QString &connectionID)
{
return database(connectionID, true).isOpen();
}
bool DatabaseBrowser::isValid(QString connectionID)
{
QSqlDatabase db = database(connectionID);
if (db.open()) {
return db.tables().contains("cat");
}
return false;
}
QList<GanjoorPoet*> DatabaseBrowser::getPoets(const QString &connectionID, bool sort)
{
QList<GanjoorPoet*> poets;
if (isConnected(connectionID)) {
QSqlDatabase databaseObject = database(connectionID);
QSqlQuery q(databaseObject);
bool descriptionExists = false;
if (q.exec("SELECT id, name, cat_id, description FROM poet")) {
descriptionExists = true;
}
else {
q.exec("SELECT id, name, cat_id FROM poet");
}
q.first();
while (q.isValid() && q.isActive()) {
GanjoorPoet* gPoet = new GanjoorPoet();
QSqlRecord qrec = q.record();
if (descriptionExists) {
gPoet->init(qrec.value(0).toInt(), qrec.value(1).toString(), qrec.value(2).toInt(), qrec.value(3).toString());
}
else {
gPoet->init(qrec.value(0).toInt(), qrec.value(1).toString(), qrec.value(2).toInt(), "");
}
poets.append(gPoet);
if (!q.next()) {
break;
}
}
if (sort) {
qSort(poets.begin(), poets.end(), comparePoetsByName);
}
}
return poets;
}
bool DatabaseBrowser::comparePoetsByName(GanjoorPoet* poet1, GanjoorPoet* poet2)
{
static bool isEnglish = VARS("General/UILanguage") == LS("en");
if (isEnglish) {
return (QString::localeAwareCompare(poet1->_Name, poet2->_Name) < 0);
}
else {
const bool poet1IsRtl = poet1->_Name.isRightToLeft();
const bool poet2IsRtl = poet2->_Name.isRightToLeft();
if ((poet1IsRtl && poet2IsRtl) || (!poet1IsRtl && !poet2IsRtl)) {
return (QString::localeAwareCompare(poet1->_Name, poet2->_Name) < 0);
}
else {
if (poet1IsRtl && !poet2IsRtl) {
return true;
}
else {
return false;
}
}
}
}
bool DatabaseBrowser::compareCategoriesByName(GanjoorCat* cat1, GanjoorCat* cat2)
{
static bool isEnglish = VARS("General/UILanguage") == LS("en");
if (isEnglish) {
return (QString::localeAwareCompare(cat1->_Text, cat2->_Text) < 0);
}
else {
const bool cat1IsRtl = cat1->_Text.isRightToLeft();
const bool cat2IsRtl = cat2->_Text.isRightToLeft();
if ((cat1IsRtl && cat2IsRtl) || (!cat1IsRtl && !cat2IsRtl)) {
return (QString::localeAwareCompare(cat1->_Text, cat2->_Text) < 0);
}
else {
if (cat1IsRtl && !cat2IsRtl) {
return true;
}
else {
return false;
}
}
}
}
GanjoorCat DatabaseBrowser::getCategory(int CatID, const QString &connectionID)
{
GanjoorCat gCat;
gCat.init();
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
q.exec("SELECT poet_id, text, parent_id, url FROM cat WHERE id = " + QString::number(CatID));
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
gCat.init(
CatID,
(qrec.value(0)).toInt(),
(qrec.value(1)).toString(),
(qrec.value(2)).toInt(),
(qrec.value(3)).toString());
return gCat;
}
}
return gCat;
}
void DatabaseBrowser::removeThreadsConnections(QObject* obj)
{
QThread* thread = qobject_cast<QThread*>(obj);
if (thread) {
QStringList connections = s_threadConnections.values(thread);
foreach (const QString &connection, connections) {
QSqlDatabase::removeDatabase(connection);
}
#ifdef SAAGHAR_DEBUG
qDebug() << "thread destroyed:" << thread;
#endif
}
}
QList<GanjoorCat*> DatabaseBrowser::getSubCategories(int CatID, const QString &connectionID)
{
QList<GanjoorCat*> lst;
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
q.exec("SELECT poet_id, text, url, ID FROM cat WHERE parent_id = " + QString::number(CatID));
q.first();
while (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
GanjoorCat* gCat = new GanjoorCat();
gCat->init((qrec.value(3)).toInt(), (qrec.value(0)).toInt(), (qrec.value(1)).toString(), CatID, (qrec.value(2)).toString());
lst.append(gCat);
if (!q.next()) {
break;
}
}
if (CatID == 0) {
qSort(lst.begin(), lst.end(), compareCategoriesByName);
}
}
return lst;
}
QList<GanjoorCat> DatabaseBrowser::getParentCategories(GanjoorCat Cat, const QString &connectionID)
{
QList<GanjoorCat> lst;
if (isConnected(connectionID)) {
while (!Cat.isNull() && Cat._ParentID != 0) {
Cat = getCategory(Cat._ParentID, connectionID);
lst.insert(0, Cat);
}
GanjoorCat gCat;
gCat.init(0, 0, SaagharWidget::rootTitle(), 0, QString());
lst.insert(0, gCat);
}
return lst;
}
QList<GanjoorPoem*> DatabaseBrowser::getPoems(int CatID, const QString &connectionID)
{
QList<GanjoorPoem*> lst;
if (isConnected(connectionID)) {
QString selectQuery = QString("SELECT ID, title, url FROM poem WHERE cat_id = %1 ORDER BY ID").arg(CatID);
QSqlQuery q(database(connectionID));
q.exec(selectQuery);
q.first();
QSqlRecord qrec;
while (q.isValid() && q.isActive()) {
qrec = q.record();
GanjoorPoem* gPoem = new GanjoorPoem();
gPoem->init((qrec.value(0)).toInt(), CatID, (qrec.value(1)).toString(), (qrec.value(2)).toString(), false, "");
lst.append(gPoem);
if (!q.next()) {
break;
}
}
}
return lst;
}
QList<GanjoorVerse*> DatabaseBrowser::getVerses(int PoemID, const QString &connectionID)
{
return getVerses(PoemID, 0, connectionID);
}
QString DatabaseBrowser::getFirstMesra(int PoemID, const QString &connectionID) //just first Mesra
{
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
QString selectQuery = QString("SELECT vorder, text FROM verse WHERE poem_id = %1 order by vorder LIMIT 1").arg(PoemID);
q.exec(selectQuery);
q.first();
while (q.isValid() && q.isActive()) {
return Tools::snippedText(q.record().value(1).toString(), "", 0, 12, true);
}
}
return QString();
}
QList<GanjoorVerse*> DatabaseBrowser::getVerses(int PoemID, int Count, const QString &connectionID)
{
QList<GanjoorVerse*> lst;
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
QString selectQuery = QString("SELECT vorder, position, text FROM verse WHERE poem_id = %1 order by vorder" + (Count > 0 ? " LIMIT " + QString::number(Count) : "")).arg(PoemID);
q.exec(selectQuery);
q.first();
while (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
GanjoorVerse* gVerse = new GanjoorVerse();
gVerse->init(PoemID, (qrec.value(0)).toInt(), (VersePosition)((qrec.value(1)).toInt()), (qrec.value(2)).toString());
lst.append(gVerse);
if (!q.next()) {
break;
}
}
}
return lst;
}
GanjoorPoem DatabaseBrowser::getPoem(int PoemID, const QString &connectionID)
{
GanjoorPoem gPoem;
gPoem.init();
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
q.exec("SELECT cat_id, title, url FROM poem WHERE ID = " + QString::number(PoemID));
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
gPoem.init(PoemID, (qrec.value(0)).toInt(), (qrec.value(1)).toString(), (qrec.value(2)).toString(), false, QString(""));
return gPoem;
}
}
return gPoem;
}
GanjoorPoem DatabaseBrowser::getNextPoem(int PoemID, int CatID, const QString &connectionID)
{
GanjoorPoem gPoem;
gPoem.init();
if (isConnected(connectionID) && PoemID != -1) { // PoemID==-1 when getNextPoem(GanjoorPoem poem) pass null poem
QSqlQuery q(database(connectionID));
q.exec(QString("SELECT ID FROM poem WHERE cat_id = %1 AND id>%2 LIMIT 1").arg(CatID).arg(PoemID));
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
gPoem = getPoem(qrec.value(0).toInt(), connectionID);
return gPoem;
}
}
return gPoem;
}
GanjoorPoem DatabaseBrowser::getNextPoem(GanjoorPoem poem, const QString &connectionID)
{
return getNextPoem(poem._ID, poem._CatID, connectionID);
}
GanjoorPoem DatabaseBrowser::getPreviousPoem(int PoemID, int CatID, const QString &connectionID)
{
GanjoorPoem gPoem;
gPoem.init();
if (isConnected(connectionID) && PoemID != -1) { // PoemID==-1 when getPreviousPoem(GanjoorPoem poem) pass null poem
QSqlQuery q(database(connectionID));
q.exec(QString("SELECT ID FROM poem WHERE cat_id = %1 AND id<%2 ORDER BY ID DESC LIMIT 1").arg(CatID).arg(PoemID));
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
gPoem = getPoem(qrec.value(0).toInt(), connectionID);
return gPoem;
}
}
return gPoem;
}
GanjoorPoem DatabaseBrowser::getPreviousPoem(GanjoorPoem poem, const QString &connectionID)
{
return getPreviousPoem(poem._ID, poem._CatID, connectionID);
}
GanjoorPoet DatabaseBrowser::getPoetForPoem(int poemID, const QString &connectionID)
{
const GanjoorPoem poem = getPoem(poemID, connectionID);
if (poem.isNull()) {
return GanjoorPoet();
}
return getPoetForCat(poem._CatID, connectionID);
}
GanjoorPoet DatabaseBrowser::getPoetForCat(int CatID, const QString &connectionID)
{
GanjoorPoet gPoet;
gPoet.init();
if (CatID == 0) {
gPoet.init(0, tr("All"), 0);
return gPoet;
}
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
q.exec("SELECT poet_id FROM cat WHERE id = " + QString::number(CatID));
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
return getPoet(qrec.value(0).toInt(), connectionID);
}
}
return gPoet;
}
GanjoorPoet DatabaseBrowser::getPoet(int PoetID, const QString &connectionID)
{
GanjoorPoet gPoet;
gPoet.init();
if (PoetID == 0) {
gPoet.init(0, tr("All"), 0);
return gPoet;
}
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
bool descriptionExists = false;
if (q.exec("SELECT id, name, cat_id, description FROM poet WHERE id = " + QString::number(PoetID))) {
descriptionExists = true;
}
else {
q.exec("SELECT id, name, cat_id FROM poet WHERE id = " + QString::number(PoetID));
}
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
if (descriptionExists) {
gPoet.init((qrec.value(0)).toInt(), (qrec.value(1)).toString(), (qrec.value(2)).toInt(), (qrec.value(3)).toString());
}
else {
gPoet.init((qrec.value(0)).toInt(), (qrec.value(1)).toString(), (qrec.value(2)).toInt(), "");
}
return gPoet;
}
}
return gPoet;
}
QString DatabaseBrowser::getPoetDescription(int PoetID, const QString &connectionID)
{
if (PoetID <= 0) {
return "";
}
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
q.exec("SELECT description FROM poet WHERE id = " + QString::number(PoetID));
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
return (qrec.value(0)).toString();
}
}
return "";
}
QString DatabaseBrowser::getPoemMediaSource(int PoemID, const QString &connectionID)
{
if (PoemID <= 0) {
return "";
}
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
q.exec("SELECT mediasource FROM poem WHERE id = " + QString::number(PoemID));
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
return (qrec.value(0)).toString();
}
}
return "";
}
void DatabaseBrowser::setPoemMediaSource(int PoemID, const QString &fileName, const QString &connectionID)
{
if (PoemID <= 0) {
return;
}
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
QString strQuery = "";
if (!database().record("poem").contains("mediasource")) {
strQuery = QString("ALTER TABLE %1 ADD COLUMN %2 %3").arg("poem").arg("mediasource").arg("NVARCHAR(255)");
q.exec(strQuery);
//q.finish();
}
strQuery = QString("UPDATE poem SET mediasource = \"%1\" WHERE id = %2 ;").arg(fileName).arg(PoemID);
//q.exec(strQuery);
//PRAGMA TABLE_INFO(poem);
//QString("REPLACE INTO poem (id, cat_id, title, url, mediasource) VALUES (%1, %2, \"%3\", \"%4\", \"%5\");").arg(newPoem->_ID).arg(newPoem->_CatID).arg(newPoem->_Title).arg(newPoem->_Url).arg(fileName);
//qDebug() << "setPoemMediaSource="<< q.exec(strQuery);
// q.first();
// if (q.isValid() && q.isActive())
// {
// QSqlRecord qrec = q.record();
// return (qrec.value(0)).toString();
// }
}
return;
}
GanjoorPoet DatabaseBrowser::getPoet(QString PoetName, const QString &connectionID)
{
GanjoorPoet gPoet;
gPoet.init();
if (isConnected(connectionID)) {
QSqlQuery q(database(connectionID));
bool descriptionExists = false;
if (q.exec("SELECT id, name, cat_id, description FROM poet WHERE name = \'" + PoetName + "\'")) {
descriptionExists = true;
}
else {
q.exec("SELECT id, name, cat_id FROM poet WHERE name = \'" + PoetName + "\'");
}
q.first();
if (q.isValid() && q.isActive()) {
QSqlRecord qrec = q.record();
if (descriptionExists) {
gPoet.init((qrec.value(0)).toInt(), (qrec.value(1)).toString(), (qrec.value(2)).toInt(), (qrec.value(3)).toString());
}
else {
gPoet.init((qrec.value(0)).toInt(), (qrec.value(1)).toString(), (qrec.value(2)).toInt(), "");
}
return gPoet;
}
}
return gPoet;
}
int DatabaseBrowser::getRandomPoemID(int* CatID, const QString &connectionID)
{
if (isConnected(connectionID)) {
QList<GanjoorCat*> subCats = getSubCategories(*CatID, connectionID);
int randIndex = Tools::getRandomNumber(0, subCats.size());
if (randIndex >= 0 && randIndex != subCats.size()) { // '==' is when we want to continue with current 'CatID'. notice maybe 'randIndex == subCats.size() == 0'.
*CatID = subCats.at(randIndex)->_ID;
return getRandomPoemID(CatID, connectionID);
}
QString strQuery = "SELECT MIN(id), MAX(id) FROM poem";
if (*CatID != 0) {
strQuery += " WHERE cat_id=" + QString::number(*CatID);
}
QSqlQuery q(database(connectionID));
q.exec(strQuery);
if (q.next()) {
QSqlRecord qrec = q.record();
int minID = qrec.value(0).toInt();
int maxID = qrec.value(1).toInt();
if (maxID <= 0 || minID < 0) {
QList<GanjoorCat*> subCats = getSubCategories(*CatID, connectionID);
*CatID = subCats.at(Tools::getRandomNumber(0, subCats.size() - 1))->_ID;
return getRandomPoemID(CatID, connectionID);
}
return Tools::getRandomNumber(minID, maxID);
}
}
return -1;
}
QList<GanjoorPoet*> DatabaseBrowser::getDataBasePoets(const QString fileName)
{
if (!QFile::exists(fileName)) {
return QList<GanjoorPoet*>();
}
QString dataBaseID = getIdForDataBase(fileName);
if (!database(dataBaseID).open()) {
QSqlDatabase::removeDatabase(dataBaseID);
return QList<GanjoorPoet*>();
}
return getPoets(dataBaseID, false);
}
QString DatabaseBrowser::getIdForDataBase(const QString &fileName, QThread* thread)
{
if (thread == 0) {
thread = QThread::currentThread();
}
bool clone = false;
const QString &longName = Tools::getLongPathName(fileName);
const QString &connectionID = longName + QLatin1String("/thread:") + threadToString(thread);
if (!QSqlDatabase::contains(connectionID)) {
const QStringList &allConnections = QSqlDatabase::connectionNames();
QString id;
foreach (id, allConnections) {
if (id.startsWith(longName)) {
clone = true;
break;
}
}
QSqlDatabase db = clone
? QSqlDatabase::cloneDatabase(QSqlDatabase::database(id, false), connectionID)
: QSqlDatabase::addDatabase(sqlDriver, connectionID);
db.setDatabaseName(fileName);
db.open();
s_threadConnections.insert(thread, connectionID);
Q_ASSERT(s_instance != 0);
connect(thread, SIGNAL(destroyed(QObject*)), s_instance, SLOT(removeThreadsConnections(QObject*)));
}
return connectionID;
}
void DatabaseBrowser::removeDatabase(const QString &fileName, QThread* thread)
{
if (thread == 0) {
thread = QThread::currentThread();
}
QString connectionID = Tools::getLongPathName(fileName) + QLatin1String("/") + threadToString(thread);
if (QSqlDatabase::contains(connectionID)) {
QSqlDatabase::removeDatabase(connectionID);
s_threadConnections.remove(thread, connectionID);
}
}
QList<GanjoorPoet*> DatabaseBrowser::getConflictingPoets(const QString fileName, const QString &toConnectionID)
{
QList<GanjoorPoet*> conflictList;
if (isConnected()) {
QList<GanjoorPoet*> dataBasePoets = getDataBasePoets(fileName);
QList<GanjoorPoet*> installedPoets = getPoets(toConnectionID);
foreach (GanjoorPoet* poet, installedPoets) {
foreach (GanjoorPoet* dbPoet, dataBasePoets) {
if (dbPoet->_ID == poet->_ID) {
conflictList << poet;
break;
}
}
}
}
return conflictList;
}
void DatabaseBrowser::removePoetFromDataBase(int PoetID, const QString &connectionID)
{
if (isConnected(connectionID)) {
QString strQuery;
QSqlQuery q(database(connectionID));
removeCatFromDataBase(getCategory(getPoet(PoetID, connectionID)._CatID, connectionID), connectionID);
strQuery = "DELETE FROM poet WHERE id=" + QString::number(PoetID);
q.exec(strQuery);
}
}
void DatabaseBrowser::removeCatFromDataBase(const GanjoorCat &gCat, const QString &connectionID)
{
if (gCat.isNull()) {
return;
}
QList<GanjoorCat*> subCats = getSubCategories(gCat._ID, connectionID);
foreach (GanjoorCat* cat, subCats) {
removeCatFromDataBase(*cat, connectionID);
}
if (isConnected(connectionID)) {
QString strQuery;
QSqlQuery q(database(connectionID));
strQuery = "DELETE FROM verse WHERE poem_id IN (SELECT id FROM poem WHERE cat_id=" + QString::number(gCat._ID) + ")";
q.exec(strQuery);
strQuery = "DELETE FROM poem WHERE cat_id=" + QString::number(gCat._ID);
q.exec(strQuery);
strQuery = "DELETE FROM cat WHERE id=" + QString::number(gCat._ID);
q.exec(strQuery);
}
}
QString DatabaseBrowser::defaultConnectionId()
{
if (s_defaultConnectionId.isEmpty()) {
if (!s_instance) {
if (!s_defaultDatabaseFileName.isEmpty()) {
s_instance = new DatabaseBrowser(s_defaultDatabaseFileName);
}
}
if (s_defaultConnectionId.isEmpty()) {
qFatal("There is no a default connection!");
exit(1);
}
}
return getIdForDataBase(databaseFileFromID(s_defaultConnectionId), QThread::currentThread());
}
int DatabaseBrowser::getNewPoetID(const QString &connectionID)
{
int newPoetID = -1;
if (isConnected(connectionID)) {
QString strQuery = "SELECT MAX(id) FROM poet";
QSqlQuery q(database(connectionID));
q.exec(strQuery);
if (q.first()) {
bool ok = false;
newPoetID = q.value(0).toInt(&ok) + 1;
if (!ok) {
newPoetID = minNewPoetID + 1;
}
}
}
if (newPoetID < minNewPoetID) {
newPoetID = minNewPoetID + 1;
}
return newPoetID;
}
int DatabaseBrowser::getNewPoemID(const QString &connectionID)
{
int newPoemID = -1;
if (isConnected(connectionID)) {
QString strQuery = "SELECT MAX(id) FROM poem";
QSqlQuery q(database(connectionID));
q.exec(strQuery);
if (q.first()) {
bool ok = false;
newPoemID = q.value(0).toInt(&ok) + 1;
if (!ok) {
newPoemID = minNewPoemID + 1;
}
}
}
if (newPoemID < minNewPoemID) {
newPoemID = minNewPoemID + 1;
}
return newPoemID;
}
int DatabaseBrowser::getNewCatID(const QString &connectionID)
{
int newCatID = -1;
if (isConnected(connectionID)) {
QString strQuery = "SELECT MAX(id) FROM cat";
QSqlQuery q(database(connectionID));
q.exec(strQuery);
if (q.first()) {
bool ok = false;
newCatID = q.value(0).toInt(&ok) + 1;
if (!ok) {
newCatID = minNewCatID + 1;
}
}
}
if (newCatID < minNewCatID) {
newCatID = minNewCatID + 1;
}
return newCatID;
}
bool DatabaseBrowser::importDataBase(const QString &fromFileName, const QString &toConnectionID)
{
if (!QFile::exists(fromFileName)) {
return false;
}
QString connectionID = getIdForDataBase(fromFileName);
if (!database(connectionID).open() || !isValid(connectionID)) {
QSqlDatabase::removeDatabase(connectionID);
return false;
}
{
// start of block
QList<GanjoorPoet*> poets = getPoets(connectionID, false);
QString strQuery;
QSqlQuery queryObject(database(connectionID));
QMap<int, int> mapPoets;
QMap<int, int> mapCats;
foreach (GanjoorPoet* newPoet, poets) {
bool insertNewPoet = true;
//skip every null poet(poet without subcat)
if (!poetHasSubCats(newPoet->_ID, connectionID)) {
continue;
}
GanjoorPoet poet = getPoet(newPoet->_Name, toConnectionID);
if (!poet.isNull()) { //conflict on Names
if (poet._ID == newPoet->_ID) {
insertNewPoet = false;
mapPoets.insert(newPoet->_ID, newPoet->_ID);
GanjoorCat poetCat = getCategory(newPoet->_CatID, toConnectionID);
if (!poetCat.isNull()) {
if (poetCat._PoetID == newPoet->_ID) {
mapCats.insert(newPoet->_CatID, newPoet->_CatID);
}
else {
int aRealyNewCatID = getNewCatID(toConnectionID);
mapCats.insert(newPoet->_CatID, getNewCatID(toConnectionID));
newPoet->_CatID = aRealyNewCatID;
}
}
}
else {
mapPoets.insert(newPoet->_ID, poet._ID);
mapPoets.insert(newPoet->_CatID, poet._CatID);
newPoet->_CatID = poet._CatID;
}
}
else {
if (!getPoet(newPoet->_ID, toConnectionID).isNull()) { //conflict on IDs
int aRealyNewPoetID = getNewPoetID(toConnectionID);
mapPoets.insert(newPoet->_ID, aRealyNewPoetID);
newPoet->_ID = aRealyNewPoetID;
int aRealyNewCatID = getNewCatID(toConnectionID);