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koffice/kexi/migration/migratemanager.cpp

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/* This file is part of the KDE project
Daniel Molkentin <molkentin@kde.org>
Joseph Wenninger <jowenn@kde.org>
Copyright (C) 2003-2004 Jaroslaw Staniek <js@iidea.pl>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "migratemanager.h"
#include "migratemanager_p.h"
#include "keximigrate.h"
#include <klibloader.h>
#include <kparts/componentfactory.h>
#include <ktrader.h>
#include <kdebug.h>
#include <klocale.h>
#include <kservice.h>
#include <assert.h>
#include <qapplication.h>
//remove debug
#undef KexiDBDbg
#define KexiDBDbg if (0) kdDebug()
using namespace KexiMigration;
MigrateManagerInternal* MigrateManagerInternal::s_self = 0L;
/*! @todo
Temporary, needed because MigrateManagerInternal::m_drivers is autodeleted
drivers currently own KexiMigrate::Data members so these are destroyed when
last MigrateManager instance is deleted. Remove this hack when
KexiMigrate is splitted into Driver and Connection. */
MigrateManager __manager;
MigrateManagerInternal::MigrateManagerInternal() /* protected */
: QObject( 0, "KexiMigrate::MigrateManagerInternal" )
, Object()
, m_drivers(17, false)
, m_refCount(0)
, lookupDriversNeeded(true)
{
m_drivers.setAutoDelete(true);
m_serverResultNum=0;
}
MigrateManagerInternal::~MigrateManagerInternal()
{
KexiDBDbg << "MigrateManagerInternal::~MigrateManagerInternal()" << endl;
m_drivers.clear();
if ( s_self == this )
s_self = 0;
KexiDBDbg << "MigrateManagerInternal::~MigrateManagerInternal() ok" << endl;
}
void MigrateManagerInternal::slotAppQuits()
{
if (qApp->mainWidget() && qApp->mainWidget()->isVisible())
return; //what a hack! - we give up when app is still there
KexiDBDbg << "MigrateManagerInternal::slotAppQuits(): let's clear drivers..." << endl;
m_drivers.clear();
}
MigrateManagerInternal *MigrateManagerInternal::self()
{
if (!s_self)
s_self = new MigrateManagerInternal();
return s_self;
}
bool MigrateManagerInternal::lookupDrivers()
{
if (!lookupDriversNeeded)
return true;
if (qApp) {
connect(qApp,SIGNAL(aboutToQuit()),this,SLOT(slotAppQuits()));
}
//TODO: for QT-only version check for KInstance wrapper
// KexiDBWarn << "DriverManagerInternal::lookupDrivers(): cannot work without KInstance (KGlobal::instance()==0)!" << endl;
// setError("Driver Manager cannot work without KInstance (KGlobal::instance()==0)!");
lookupDriversNeeded = false;
clearError();
KTrader::OfferList tlist = KTrader::self()->query("Kexi/MigrationDriver");
KTrader::OfferList::ConstIterator it(tlist.constBegin());
for(; it != tlist.constEnd(); ++it)
{
KService::Ptr ptr = (*it);
QString srv_name = ptr->property("X-Kexi-MigrationDriverName").toString();
if (srv_name.isEmpty()) {
KexiDBWarn << "MigrateManagerInternal::lookupDrivers(): "
"X-Kexi-MigrationDriverName must be set for migration driver \""
<< ptr->property("Name").toString() << "\" service!\n -- skipped!" << endl;
continue;
}
if (m_services_lcase.contains(srv_name.lower())) {
continue;
}
//! @todo could be merged. Copied from KexiDB::DriverManager.
//<COPIED>
QString srv_ver_str = ptr->property("X-Kexi-KexiMigrationVersion").toString();
QStringList lst( QStringList::split(".", srv_ver_str) );
int minor_ver, major_ver;
bool ok = (lst.count() == 2);
if (ok)
major_ver = lst[0].toUInt(&ok);
if (ok)
minor_ver = lst[1].toUInt(&ok);
if (!ok) {
KexiDBWarn << "MigrateManagerInternal::lookupDrivers(): problem with detecting '"
<< srv_name.lower() << "' driver's version -- skipping it!" << endl;
possibleProblems += QString("\"%1\" migration driver has unrecognized version; "
"required driver version is \"%2.%3\"")
.arg(srv_name.lower())
.arg(KexiMigration::versionMajor()).arg(KexiMigration::versionMinor());
continue;
}
if (major_ver != KexiMigration::versionMajor() || minor_ver != KexiMigration::versionMinor()) {
KexiDBWarn << QString("MigrateManagerInternal::lookupDrivers(): '%1' driver"
" has version '%2' but required migration driver version is '%3.%4'\n"
" -- skipping this driver!").arg(srv_name.lower()).arg(srv_ver_str)
.arg(KexiMigration::versionMajor()).arg(KexiMigration::versionMinor()) << endl;
possibleProblems += QString("\"%1\" migration driver has version \"%2\" "
"but required driver version is \"%3.%4\"")
.arg(srv_name.lower()).arg(srv_ver_str)
.arg(KexiMigration::versionMajor()).arg(KexiMigration::versionMinor());
continue;
}
//</COPIED>
QString mime = ptr->property("X-Kexi-FileDBDriverMime").toString().lower();
QString drvType = ptr->property("X-Kexi-MigrationDriverType").toString().lower();
if (drvType=="file") {
if (!mime.isEmpty()) {
if (!m_services_by_mimetype.contains(mime)) {
m_services_by_mimetype.insert(mime, ptr);
}
else {
KexiDBWarn << "MigrateManagerInternal::lookupDrivers(): more than one driver for '"
<< mime << "' mime type!" << endl;
}
}
}
m_services.insert(srv_name, ptr);
m_services_lcase.insert(srv_name.lower(), ptr);
KexiDBDbg << "MigrateManager::lookupDrivers(): registered driver: " << ptr->name()
<< "(" << ptr->library() << ")" << endl;
}
if (tlist.isEmpty())
{
setError(ERR_DRIVERMANAGER, i18n("Could not find any import/export database drivers.") );
return false;
}
return true;
}
KexiMigrate* MigrateManagerInternal::driver(const QString& name)
{
if (!lookupDrivers())
return 0;
clearError();
KexiDBDbg << "MigrationrManagerInternal::migrationDriver(): loading " << name << endl;
KexiMigrate *drv = name.isEmpty() ? 0 : m_drivers.find(name.latin1());
if (drv)
return drv; //cached
if (!m_services_lcase.contains(name.lower())) {
setError(ERR_DRIVERMANAGER, i18n("Could not find import/export database driver \"%1\".").arg(name) );
return 0;
}
KService::Ptr ptr= *(m_services_lcase.find(name.lower()));
QString srv_name = ptr->property("X-Kexi-MigrationDriverName").toString();
KexiDBDbg << "MigrateManagerInternal::driver(): library: "<<ptr->library()<<endl;
drv = KParts::ComponentFactory::createInstanceFromService<KexiMigrate>(ptr,
this, srv_name.latin1(), QStringList(),&m_serverResultNum);
if (!drv) {
setError(ERR_DRIVERMANAGER, i18n("Could not load import/export database driver \"%1\".")
.arg(name) );
if (m_componentLoadingErrors.isEmpty()) {//fill errtable on demand
m_componentLoadingErrors[KParts::ComponentFactory::ErrNoServiceFound]="ErrNoServiceFound";
m_componentLoadingErrors[KParts::ComponentFactory::ErrServiceProvidesNoLibrary]="ErrServiceProvidesNoLibrary";
m_componentLoadingErrors[KParts::ComponentFactory::ErrNoLibrary]="ErrNoLibrary";
m_componentLoadingErrors[KParts::ComponentFactory::ErrNoFactory]="ErrNoFactory";
m_componentLoadingErrors[KParts::ComponentFactory::ErrNoComponent]="ErrNoComponent";
}
m_serverResultName=m_componentLoadingErrors[m_serverResultNum];
return 0;
}
KexiDBDbg << "MigrateManagerInternal::driver(): loading succeed: " << name <<endl;
KexiDBDbg << "drv="<<(long)drv <<endl;
// drv->setName(srv_name.latin1());
// drv->d->service = ptr; //store info
// drv->d->fileDBDriverMimeType = ptr->property("X-Kexi-FileDBDriverMime").toString();
// drv->d->initInternalProperties();
if (!drv->isValid()) {
setError(drv);
delete drv;
return 0;
}
m_drivers.insert(name.latin1(), drv); //cache it
return drv;
}
void MigrateManagerInternal::incRefCount()
{
m_refCount++;
KexiDBDbg << "MigrateManagerInternal::incRefCount(): " << m_refCount << endl;
}
void MigrateManagerInternal::decRefCount()
{
m_refCount--;
KexiDBDbg << "MigrateManagerInternal::decRefCount(): " << m_refCount << endl;
// if (m_refCount<1) {
// KexiDBDbg<<"KexiDB::DriverManagerInternal::decRefCount(): reached m_refCount<1 -->deletelater()"<<endl;
// s_self=0;
// deleteLater();
// }
}
// ---------------------------
// --- DriverManager impl. ---
// ---------------------------
MigrateManager::MigrateManager()
: QObject( 0, "KexiMigrate::MigrateManager" )
, Object()
, d_int( MigrateManagerInternal::self() )
{
d_int->incRefCount();
// if ( !s_self )
// s_self = this;
// lookupDrivers();
}
MigrateManager::~MigrateManager()
{
KexiDBDbg << "MigrateManager::~MigrateManager()" << endl;
/* Connection *conn;
for ( conn = m_connections.first(); conn ; conn = m_connections.next() ) {
conn->disconnect();
conn->m_driver = 0; //don't let the connection touch our driver now
m_connections.remove();
delete conn;
}*/
d_int->decRefCount();
if (d_int->m_refCount==0) {
//delete internal drv manager!
delete d_int;
}
// if ( s_self == this )
//s_self = 0;
KexiDBDbg << "MigrateManager::~MigrateManager() ok" << endl;
}
const QStringList MigrateManager::driverNames()
{
if (!d_int->lookupDrivers()) {
kdDebug() << "MigrateManager::driverNames() lookupDrivers failed" << endl;
return QStringList();
}
if (d_int->m_services.isEmpty()) {
kdDebug() << "MigrateManager::driverNames() MigrateManager::ServicesMap is empty" << endl;
return QStringList();
}
if (d_int->error()) {
kdDebug() << "MigrateManager::driverNames() Error: " << d_int->errorMsg() << endl;
return QStringList();
}
return d_int->m_services.keys();
}
QString MigrateManager::driverForMimeType(const QString &mimeType)
{
if (!d_int->lookupDrivers()) {
kdDebug() << "MigrateManager::driverForMimeType() lookupDrivers() failed" << endl;
setError(d_int);
return 0;
}
KService::Ptr ptr = d_int->m_services_by_mimetype[mimeType.lower()];
if (!ptr) {
kdDebug() << QString("MigrateManager::driverForMimeType(%1) No such mimetype").arg(mimeType) << endl;
return QString::null;
}
return ptr->property("X-Kexi-MigrationDriverName").toString();
}
KexiMigrate* MigrateManager::driver(const QString& name)
{
KexiMigrate *drv = d_int->driver(name);
if (d_int->error()) {
kdDebug() << QString("MigrateManager::driver(%1) Error: %2").arg(name).arg(d_int->errorMsg()) << endl;
setError(d_int);
}
return drv;
}
QString MigrateManager::serverErrorMsg()
{
return d_int->m_serverErrMsg;
}
int MigrateManager::serverResult()
{
return d_int->m_serverResultNum;
}
QString MigrateManager::serverResultName()
{
return d_int->m_serverResultName;
}
void MigrateManager::drv_clearServerResult()
{
d_int->m_serverErrMsg=QString::null;
d_int->m_serverResultNum=0;
d_int->m_serverResultName=QString::null;
}
QString MigrateManager::possibleProblemsInfoMsg() const
{
if (d_int->possibleProblems.isEmpty())
return QString::null;
QString str;
str.reserve(1024);
str = "<ul>";
for (QStringList::ConstIterator it = d_int->possibleProblems.constBegin();
it!=d_int->possibleProblems.constEnd(); ++it)
{
str += (QString::fromLatin1("<li>") + *it + QString::fromLatin1("</li>"));
}
str += "</ul>";
return str;
}
//------------------------
int KexiMigration::versionMajor()
{
return KEXI_MIGRATION_VERSION_MAJOR;
}
int KexiMigration::versionMinor()
{
return KEXI_MIGRATION_VERSION_MINOR;
}
#include "migratemanager_p.moc"