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	diff --git a/nepomuk/CMakeLists.txt b/nepomuk/CMakeLists.txt
	index bd0104e607..3319b9d53a 100644
	--- a/nepomuk/CMakeLists.txt
	+++ b/nepomuk/CMakeLists.txt
	@@ -1,198 +1,199 @@
	project(nepomuk)

	include(SopranoAddOntology)

	set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")

	add_definitions(-DKDE_DEFAULT_DEBUG_AREA=300000)
	add_definitions(-DQT_USE_FAST_CONCATENATION -DQT_USE_FAST_OPERATOR_PLUS)

	if(KDE_NO_DEPRECATED)
	add_definitions(-DDISABLE_NEPOMUK_LEGACY=1)
	endif(KDE_NO_DEPRECATED)


	include_directories(
	${CMAKE_CURRENT_SOURCE_DIR}
	${CMAKE_CURRENT_SOURCE_DIR}/core
	${CMAKE_CURRENT_SOURCE_DIR}/types
	${CMAKE_CURRENT_SOURCE_DIR}/ui
	${CMAKE_CURRENT_SOURCE_DIR}/query
	${CMAKE_CURRENT_SOURCE_DIR}/utils
	${CMAKE_SOURCE_DIR}
	${KDE4_KIO_INCLUDES}
	${QT_INCLUDES}
	${SOPRANO_INCLUDE_DIR}
	)

	set(nepomuk_core_SRCS
	core/variant.cpp
	core/resourcedata.cpp
	core/resourcemanager.cpp
	core/nepomukmainmodel.cpp
	core/dbusconnectionpool.cpp
	core/resource.cpp
	core/thing.cpp
	core/file.cpp
	core/tag.cpp
	core/nepomukservice.cpp
	+ core/dbustypes.cpp
	)

	if(NOT KDE_NO_DEPRECATED)
	set(nepomuk_core_SRCS
	${nepomuk_core_SRCS}
	core/tools.cpp
	)
	endif(NOT KDE_NO_DEPRECATED)

	set(nepomuk_ui_SRCS
	ui/ktagcloudwidget.cpp
	ui/kblocklayout.cpp
	ui/kmetadatatagcloud.cpp
	ui/ktagdisplaywidget.cpp
	ui/nepomukmassupdatejob.cpp
	ui/tagwidget.cpp
	ui/kedittagsdialog.cpp
	ui/tagcheckbox.cpp
	)

	set(nepomuk_types_SRCS
	types/entity.cpp
	types/ontology.cpp
	types/class.cpp
	types/property.cpp
	types/literal.cpp
	types/entitymanager.cpp
	)

	if(NOT KDE_NO_DEPRECATED)
	set(nepomuk_types_SRCS
	${nepomuk_types_SRCS}
	types/desktopontologyloader.cpp
	types/fileontologyloader.cpp
	types/global.cpp
	types/nepomukontologyloader.cpp
	types/ontologyloader.cpp
	types/ontologymanager.cpp
	)
	endif(NOT KDE_NO_DEPRECATED)

	set(nepomuk_query_SRCS
	query/term.cpp
	query/negationterm.cpp
	query/orterm.cpp
	query/andterm.cpp
	query/comparisonterm.cpp
	query/simpleterm.cpp
	query/groupterm.cpp
	query/resourceterm.cpp
	query/literalterm.cpp
	query/resourcetypeterm.cpp
	query/optionalterm.cpp
	query/query.cpp
	query/query_p.cpp
	query/filequery.cpp
	query/queryparser.cpp
	query/dateparser.cpp
	query/result.cpp
	query/queryserviceclient.cpp
	query/dbusoperators.cpp
	)

	set(nepomuk_LIB_SRCS
	${nepomuk_core_SRCS}
	${nepomuk_ui_SRCS}
	${nepomuk_types_SRCS}
	# ${nepomuk_query_SRCS}
	)

	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nie/nie.trig" "NIE" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nie/nfo.trig" "NFO" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nie/ncal.trig" "NCAL" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nie/nco.trig" "NCO" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nie/nmo.trig" "NMO" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nie/nmm.trig" "NMM" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nie/nexif.trig" "NEXIF" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/pimo/pimo.trig" "PIMO" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/pimo/tmo.trig" "TMO" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nepomuk/nuao.trig" "NUAO" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")
	soprano_add_ontology(nepomuk_LIB_SRCS "${SHAREDDESKTOPONTOLOGIES_ROOT_DIR}/nepomuk/ndo.trig" "NDO" "Nepomuk::Vocabulary" "trig" VISIBILITY "nepomuk")

	kde4_add_library(nepomuk ${LIBRARY_TYPE} ${nepomuk_LIB_SRCS})

	target_link_libraries(nepomuk
	${SOPRANO_LIBRARIES}
	${SOPRANO_CLIENT_LIBRARIES}
	${QT_QTCORE_LIBRARY}
	${QT_QTGUI_LIBRARY}
	${QT_QTDBUS_LIBRARY}
	kdecore
	kdeui
	)

	target_link_libraries(nepomuk
	LINK_INTERFACE_LIBRARIES
	kdeui
	${SOPRANO_LIBRARIES})


	set_target_properties(nepomuk PROPERTIES
	VERSION ${GENERIC_LIB_VERSION}
	SOVERSION ${GENERIC_LIB_SOVERSION}
	)

	install(TARGETS nepomuk EXPORT kdelibsLibraryTargets ${INSTALL_TARGETS_DEFAULT_ARGS})

	install(FILES
	nepomuk_export.h
	core/variant.h
	core/resourcemanager.h
	core/nepomukservice.h
	core/resource.h
	core/thing.h
	core/tag.h
	core/file.h
	types/entity.h
	types/class.h
	types/property.h
	types/ontology.h
	types/literal.h
	ui/ktagcloudwidget.h
	ui/kmetadatatagcloud.h
	ui/kmetadatatagwidget.h
	ui/ktagdisplaywidget.h
	ui/nepomukmassupdatejob.h
	ui/tagwidget.h
	# Vocabularies
	${CMAKE_CURRENT_BINARY_DIR}/nie.h
	${CMAKE_CURRENT_BINARY_DIR}/nfo.h
	${CMAKE_CURRENT_BINARY_DIR}/ncal.h
	${CMAKE_CURRENT_BINARY_DIR}/nco.h
	${CMAKE_CURRENT_BINARY_DIR}/nmo.h
	${CMAKE_CURRENT_BINARY_DIR}/nmm.h
	${CMAKE_CURRENT_BINARY_DIR}/nexif.h
	${CMAKE_CURRENT_BINARY_DIR}/pimo.h
	${CMAKE_CURRENT_BINARY_DIR}/tmo.h
	${CMAKE_CURRENT_BINARY_DIR}/nuao.h
	${CMAKE_CURRENT_BINARY_DIR}/ndo.h

	DESTINATION ${INCLUDE_INSTALL_DIR}/nepomuk COMPONENT Devel
	)

	if(NOT KDE_NO_DEPRECATED)
	install(FILES
	core/tools.h
	types/desktopontologyloader.h
	types/fileontologyloader.h
	types/global.h
	types/nepomukontologyloader.h
	types/ontologyloader.h
	types/ontologymanager.h
	DESTINATION ${INCLUDE_INSTALL_DIR}/nepomuk COMPONENT Devel
	)
	endif(NOT KDE_NO_DEPRECATED)

	add_subdirectory(rcgen)
	add_subdirectory(query)
	add_subdirectory(utils)
	add_subdirectory(test)
	diff --git a/nepomuk/core/dbustypes.cpp b/nepomuk/core/dbustypes.cpp
	new file mode 100644
	index 0000000000..761ded2e4f
	--- /dev/null
	+++ b/nepomuk/core/dbustypes.cpp
	@@ -0,0 +1,136 @@
	+/*
	+ This file is part of the Nepomuk KDE project.
	+ Copyright (C) 2011 Sebastian Trueg <trueg@kde.org>
	+
	+ This library is free software; you can redistribute it and/or
	+ modify it under the terms of the GNU Lesser General Public
	+ License as published by the Free Software Foundation; either
	+ version 2.1 of the License, or (at your option) version 3, or any
	+ later version accepted by the membership of KDE e.V. (or its
	+ successor approved by the membership of KDE e.V.), which shall
	+ act as a proxy defined in Section 6 of version 3 of the license.
	+
	+ This library 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
	+ Lesser General Public License for more details.
	+
	+ You should have received a copy of the GNU Lesser General Public
	+ License along with this library. If not, see <http://www.gnu.org/licenses/>.
	+*/
	+
	+#include "dbustypes.h"
	+
	+#include <QtCore/QStringList>
	+#include <QtCore/QDate>
	+#include <QtCore/QTime>
	+#include <QtCore/QDateTime>
	+#include <QtDBus/QDBusMetaType>
	+
	+#include "kurl.h"
	+#include "kdebug.h"
	+
	+QString Nepomuk::DBus::convertUri(const QUrl& uri)
	+{
	+ return KUrl(uri).url();
	+}
	+
	+QStringList Nepomuk::DBus::convertUriList(const QList<QUrl>& uris)
	+{
	+ QStringList uriStrings;
	+ foreach(const QUrl& uri, uris)
	+ uriStrings << convertUri(uri);
	+ return uriStrings;
	+}
	+
	+QVariantList Nepomuk::DBus::normalizeVariantList(const QVariantList& l)
	+{
	+ QVariantList newL;
	+ QListIterator<QVariant> it(l);
	+ while(it.hasNext()) {
	+ QVariant v = it.next();
	+ if(v.userType() == qMetaTypeId<KUrl>()) {
	+ newL.append(QVariant(QUrl(v.value<KUrl>())));
	+ }
	+ else {
	+ newL.append(v);
	+ }
	+ }
	+ return newL;
	+}
	+
	+QVariant Nepomuk::DBus::resolveDBusArguments(const QVariant& v)
	+{
	+ //
	+ // trueg: QDBus does not automatically convert non-basic types but gives us a QDBusArgument in a QVariant.
	+ // Thus, we need to handle QUrl, QTime, QDate, and QDateTime as a special cases here. They is the only complex types we support.
	+ //
	+ if(v.userType() == qMetaTypeId<QDBusArgument>()) {
	+ const QDBusArgument arg = v.value<QDBusArgument>();
	+
	+ QVariant v;
	+ if(arg.currentSignature() == QLatin1String("(s)")) {
	+ QUrl url;
	+ arg >> url;
	+ return url;
	+ }
	+ else if(arg.currentSignature() == QLatin1String("(iii)")) {
	+ QDate date;
	+ arg >> date;
	+ return date;
	+ }
	+ else if(arg.currentSignature() == QLatin1String("(iiii)")) {
	+ QTime time;
	+ arg >> time;
	+ return time;
	+ }
	+ else if(arg.currentSignature() == QLatin1String("((iii)(iiii)i)")) {
	+ QDateTime dt;
	+ arg >> dt;
	+ return dt;
	+ }
	+ else {
	+ kDebug() << "Unknown type signature in property hash value:" << arg.currentSignature();
	+ return QVariant();
	+ }
	+ }
	+ else {
	+ return v;
	+ }
	+}
	+
	+QVariantList Nepomuk::DBus::resolveDBusArguments(const QVariantList& l)
	+{
	+ QVariantList newL;
	+ QListIterator<QVariant> it(l);
	+ while(it.hasNext()) {
	+ newL.append(resolveDBusArguments(it.next()));
	+ }
	+ return newL;
	+}
	+
	+void Nepomuk::DBus::registerDBusTypes()
	+{
	+ // we need QUrl to be able to pass it in a QVariant
	+ qDBusRegisterMetaType<QUrl>();
	+}
	+
	+// We need the QUrl serialization to be able to pass URIs in variants
	+QDBusArgument& operator<<( QDBusArgument& arg, const QUrl& url )
	+{
	+ arg.beginStructure();
	+ arg << QString::fromAscii(url.toEncoded());
	+ arg.endStructure();
	+ return arg;
	+}
	+
	+// We need the QUrl serialization to be able to pass URIs in variants
	+const QDBusArgument& operator>>( const QDBusArgument& arg, QUrl& url )
	+{
	+ arg.beginStructure();
	+ QString uriString;
	+ arg >> uriString;
	+ url = QUrl::fromEncoded(uriString.toAscii());
	+ arg.endStructure();
	+ return arg;
	+}
	diff --git a/nepomuk/core/dbustypes.h b/nepomuk/core/dbustypes.h
	new file mode 100644
	index 0000000000..4a66a20d1a
	--- /dev/null
	+++ b/nepomuk/core/dbustypes.h
	@@ -0,0 +1,59 @@
	+/*
	+ This file is part of the Nepomuk KDE project.
	+ Copyright (C) 2011 Sebastian Trueg <trueg@kde.org>
	+
	+ This library is free software; you can redistribute it and/or
	+ modify it under the terms of the GNU Lesser General Public
	+ License as published by the Free Software Foundation; either
	+ version 2.1 of the License, or (at your option) version 3, or any
	+ later version accepted by the membership of KDE e.V. (or its
	+ successor approved by the membership of KDE e.V.), which shall
	+ act as a proxy defined in Section 6 of version 3 of the license.
	+
	+ This library 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
	+ Lesser General Public License for more details.
	+
	+ You should have received a copy of the GNU Lesser General Public
	+ License along with this library. If not, see <http://www.gnu.org/licenses/>.
	+*/
	+
	+#ifndef DBUSTYPES_H
	+#define DBUSTYPES_H
	+
	+#include <QtCore/QMetaType>
	+#include <QtCore/QHash>
	+#include <QtCore/QString>
	+#include <QtCore/QUrl>
	+#include <QtDBus/QDBusVariant>
	+#include <QtDBus/QDBusArgument>
	+
	+// #include "simpleresource.h"
	+// #include "nepomukdatamanagement_export.h"
	+#include "nepomuk_export.h"
	+
	+//CAUTION: Q_DECLARE_METATYPE doesn't accept template arguments like QHash<T, T>
	+typedef QHash<QString, QString> __nepomuk_QHashQStringQString;
	+Q_DECLARE_METATYPE( __nepomuk_QHashQStringQString )
	+
	+namespace Nepomuk {
	+ namespace DBus {
	+ QString NEPOMUK_EXPORT convertUri(const QUrl& uri);
	+ QStringList NEPOMUK_EXPORT convertUriList(const QList<QUrl>& uris);
	+
	+ /// Convert QDBusArguments variants into QUrl, QDate, QTime, and QDateTime variants
	+ NEPOMUK_EXPORT QVariant resolveDBusArguments(const QVariant& v);
	+ NEPOMUK_EXPORT QVariantList resolveDBusArguments(const QVariantList& l);
	+
	+ /// Replaces KUrl with QUrl for DBus marshalling.
	+ QVariantList normalizeVariantList(const QVariantList& l);
	+
	+ NEPOMUK_EXPORT void registerDBusTypes();
	+ }
	+}
	+
	+QDBusArgument& operator<<( QDBusArgument& arg, const QUrl& url );
	+const QDBusArgument& operator>>( const QDBusArgument& arg, QUrl& url );
	+
	+#endif // DBUSTYPES_H
	diff --git a/nepomuk/core/resourcedata.cpp b/nepomuk/core/resourcedata.cpp
	index 023a6b97b3..1b516b97d7 100644
	--- a/nepomuk/core/resourcedata.cpp
	+++ b/nepomuk/core/resourcedata.cpp
	@@ -1,747 +1,744 @@
	/*
	* This file is part of the Nepomuk KDE project.
	* Copyright (C) 2006-2010 Sebastian Trueg <trueg@kde.org>
	* Copyright (C) 2010 Vishesh Handa <handa.vish@gmail.com>
	*
	* This library 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 library 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 library; see the file COPYING.LIB. If not, write to
	* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*/

	#include "resourcedata.h"
	#include "resourcemanager.h"
	#include "resourcemanager_p.h"
	#include "resource.h"
	#include "tools.h"
	#include "nie.h"
	#include "nfo.h"
	#include "pimo.h"
	#include "nepomukmainmodel.h"
	#include "dbusconnectionpool.h"
	#include "class.h"
	+#include "dbustypes.h"

	#include <Soprano/Statement>
	#include <Soprano/StatementIterator>
	#include <Soprano/QueryResultIterator>
	#include <Soprano/Model>
	#include <Soprano/Vocabulary/RDFS>
	#include <Soprano/Vocabulary/RDF>
	#include <Soprano/Vocabulary/Xesam>
	#include <Soprano/Vocabulary/NAO>

	#include <QtCore/QFile>
	#include <QtCore/QDateTime>
	#include <QtCore/QMutexLocker>
	#include <QtDBus/QDBusConnection>
	#include <QtDBus/QDBusInterface>
	#include <QtDBus/QDBusReply>

	#include <kdebug.h>
	#include <kurl.h>
	#include <kcomponentdata.h>

	using namespace Soprano;

	#define MAINMODEL (m_rm->m_manager->mainModel())


	Nepomuk::ResourceData::ResourceData( const QUrl& uri, const QUrl& kickOffUri, const QUrl& type, ResourceManagerPrivate* rm )
	: m_uri(uri),
	m_mainType( type ),
	m_modificationMutex(QMutex::Recursive),
	m_cacheDirty(true),
	m_pimoThing(0),
	m_groundingOccurence(0),
	m_rm(rm)
	{
	if( m_mainType.isEmpty() ) {
	m_mainType = Soprano::Vocabulary::RDFS::Resource();
	}

	m_types << m_mainType;

	if( m_rm->dataCacheFull() )
	m_rm->cleanupCache();

	m_rm->dataCnt.ref();

	if( !uri.isEmpty() ) {
	m_kickoffUris.insert( uri );
	}
	if( !kickOffUri.isEmpty() ) {
	m_kickoffUris.insert( kickOffUri );
	}
	m_rm->addToKickOffList( this, m_kickoffUris );
	}


	Nepomuk::ResourceData::~ResourceData()
	{
	resetAll(true);
	m_rm->dataCnt.deref();
	}


	bool Nepomuk::ResourceData::isFile()
	{
	return( m_uri.scheme() == QLatin1String("file") \|\|
	m_nieUrl.scheme() == QLatin1String("file") \|\|
	(!m_kickoffUris.isEmpty() && (*m_kickoffUris.begin()).scheme() == QLatin1String("file")) \|\|
	constHasType( Soprano::Vocabulary::Xesam::File() ) \|\|
	constHasType( Nepomuk::Vocabulary::NFO::FileDataObject() ) );
	}


	QUrl Nepomuk::ResourceData::uri() const
	{
	return m_uri;
	}


	QUrl Nepomuk::ResourceData::type()
	{
	load();
	return m_mainType;
	}


	QList<QUrl> Nepomuk::ResourceData::allTypes()
	{
	load();
	return m_types;
	}


	void Nepomuk::ResourceData::setTypes( const QList<QUrl>& types )
	{
	store();

	QMutexLocker lock(&m_modificationMutex);

	// reset types
	m_types.clear();
	m_mainType = Soprano::Vocabulary::RDFS::Resource();

	QList<Node> nodes;
	// load types (and set maintype)
	foreach( const QUrl& url, types ) {
	loadType( url );
	nodes << Node( url );
	}

	// update the data store
	setProperty(Soprano::Vocabulary::RDF::type(), Nepomuk::Variant(types) );
	}



	void Nepomuk::ResourceData::resetAll( bool isDelete )
	{
	// remove us from all caches (store() will re-insert us later if necessary)
	m_rm->mutex.lock();
	if( !m_uri.isEmpty() )
	m_rm->m_initializedData.remove( m_uri );
	Q_FOREACH( const KUrl& uri, m_kickoffUris )
	m_rm->m_uriKickoffData.remove( uri );
	m_rm->mutex.unlock();

	// reset all variables
	m_uri = QUrl();
	m_nieUrl = KUrl();
	m_kickoffUris.clear();
	m_cache.clear();
	m_cacheDirty = false;
	m_types.clear();
	delete m_pimoThing;
	m_pimoThing = 0;
	m_groundingOccurence = 0;

	// when we are being deleted the value of m_mainType is not important
	// anymore. Also since ResourceManager is a global static it might be
	// deleted after the global static behind Soprano::Vocabulary::RDFS
	// which results in a crash.
	if( !isDelete )
	m_mainType = Soprano::Vocabulary::RDFS::Resource();
	}


	QHash<QUrl, Nepomuk::Variant> Nepomuk::ResourceData::allProperties()
	{
	load();
	return m_cache;
	}


	bool Nepomuk::ResourceData::hasProperty( const QUrl& uri )
	{
	load();
	QHash<QUrl, Variant>::const_iterator it = m_cache.constFind( uri );
	if( it == m_cache.constEnd() )
	return false;

	return true;
	}


	bool Nepomuk::ResourceData::hasProperty( const QUrl& p, const Variant& v )
	{
	QHash<QUrl, Variant>::const_iterator it = m_cache.constFind( p );
	if( it == m_cache.constEnd() )
	return false;

	QList<Variant> thisVals = it.value().toVariantList();
	QList<Variant> vals = v.toVariantList();
	Q_FOREACH( const Variant& val, vals ) {
	if( !thisVals.contains(val) )
	return false;
	}
	return true;
	}


	bool Nepomuk::ResourceData::hasType( const QUrl& uri )
	{
	load();
	return constHasType( uri );
	}


	bool Nepomuk::ResourceData::constHasType( const QUrl& uri ) const
	{
	// we need to protect the reading, too. setTypes may be triggered from another thread
	QMutexLocker lock(&m_modificationMutex);

	Types::Class requestedType( uri );
	for ( QList<QUrl>::const_iterator it = m_types.constBegin();
	it != m_types.constEnd(); ++it ) {
	Types::Class availType( *it );
	if ( availType == requestedType \|\|
	availType.isSubClassOf( requestedType ) ) {
	return true;
	}
	}
	return false;
	}


	Nepomuk::Variant Nepomuk::ResourceData::property( const QUrl& uri )
	{
	load();

	// we need to protect the reading, too. load my be triggered from another thread's
	// connection to a Soprano statement signal
	QMutexLocker lock(&m_modificationMutex);

	QHash<QUrl, Variant>::const_iterator it = m_cache.constFind( uri );
	if ( it == m_cache.constEnd() ) {
	return Variant();
	}
	else {
	return *it;
	}
	}


	bool Nepomuk::ResourceData::store()
	{
	QMutexLocker lock(&m_modificationMutex);

	if ( m_uri.isEmpty() ) {
	QMutexLocker rmlock(&m_rm->mutex);

	QDBusConnection bus = QDBusConnection::sessionBus();
	QDBusMessage msg = QDBusMessage::createMethodCall( QLatin1String("org.kde.nepomuk.DataManagement"),
	QLatin1String("/datamanagement"),
	QLatin1String("org.kde.nepomuk.DataManagement"),
	QLatin1String("createResource") );
	QString app = KGlobal::mainComponent().componentName();
	- QStringList types;
	- foreach( const QUrl &type, m_types )
	- types << type.toString();
	-
	QVariantList arguments;
	+
	//FIXME: Maybe we should be setting the 'label' over here.
	- arguments << types << QString() << QString() << app;
	+ arguments << DBus::convertUriList(m_types) << QString() << QString() << app;
	msg.setArguments( arguments );

	QDBusMessage reply = bus.call( msg );
	if( reply.type() == QDBusMessage::ErrorMessage ) {
	//TODO: Set the error somehow
	kWarning() << reply.errorMessage();
	return false;
	}
	else if( reply.type() == QDBusMessage::ReplyMessage ) {
	m_uri = reply.arguments().at(0).toUrl();
	}

	// Add us to the initialized data, i.e. make us "valid"
	m_rm->m_initializedData.insert( m_uri, this );

	// each initialized resource has to be in a kickoff list
	// thus, we make sure that is the case.
	if( m_kickoffUris.isEmpty() ) {
	m_kickoffUris.insert( m_uri );
	m_rm->addToKickOffList( this, m_kickoffUris );
	}

	foreach( const KUrl& url, m_kickoffUris ) {
	if( url.scheme().isEmpty() )
	setProperty( Soprano::Vocabulary::NAO::identifier(), Variant(url.url()) );
	else
	setProperty( Nepomuk::Vocabulary::NIE::url(), Variant(url.url()) );
	}
	}

	/*
	// store our grounding occurrence in case we are a thing created by the pimoThing() method
	if( m_groundingOccurence ) {
	if( m_groundingOccurence != this )
	m_groundingOccurence->store();
	statements.append( Statement( m_uri, Vocabulary::PIMO::groundingOccurrence(), m_groundingOccurence->uri() ) );
	}
	*/
	return true;
	}


	void Nepomuk::ResourceData::loadType( const QUrl& storedType )
	{
	if ( !m_types.contains( storedType ) ) {
	m_types << storedType;
	}
	if ( m_mainType == Soprano::Vocabulary::RDFS::Resource() ) {
	Q_ASSERT( !storedType.isEmpty() );
	m_mainType = storedType;
	}
	else {
	Types::Class currentTypeClass = m_mainType;
	Types::Class storedTypeClass = storedType;

	// Keep the type that is further down the hierarchy
	if ( storedTypeClass.isSubClassOf( currentTypeClass ) ) {
	m_mainType = storedTypeClass.uri();
	}
	else {
	// This is a little convenience hack since the user is most likely
	// more interested in the file content than the actual file
	Types::Class xesamContentClass( Soprano::Vocabulary::Xesam::Content() );
	if ( m_mainType == Soprano::Vocabulary::Xesam::File() &&
	( storedTypeClass == xesamContentClass \|\|
	storedTypeClass.isSubClassOf( xesamContentClass ) ) ) {
	m_mainType = storedTypeClass.uri();
	}
	else {
	// the same is true for nie:DataObject vs. nie:InformationElement
	Types::Class nieInformationElementClass( Vocabulary::NIE::InformationElement() );
	Types::Class nieDataObjectClass( Vocabulary::NIE::DataObject() );
	if( ( currentTypeClass == nieDataObjectClass \|\|
	currentTypeClass.isSubClassOf( nieDataObjectClass ) ) &&
	( storedTypeClass == nieInformationElementClass \|\|
	storedTypeClass.isSubClassOf( nieInformationElementClass ) ) ) {
	m_mainType = storedTypeClass.uri();
	}
	}
	}
	}
	}


	bool Nepomuk::ResourceData::load()
	{
	QMutexLocker lock(&m_modificationMutex);

	if ( m_cacheDirty ) {
	m_cache.clear();

	if ( m_uri.isValid() ) {
	//
	// We exclude properties that are part of the inference graph
	// It would only pollute the user interface
	//
	Soprano::QueryResultIterator it = MAINMODEL->executeQuery(QString("select distinct ?p ?o where { "
	"graph ?g { %1 ?p ?o . } . FILTER(?g!=<urn:crappyinference2:inferredtriples>) . "
	"}").arg(Soprano::Node::resourceToN3(m_uri)),
	Soprano::Query::QueryLanguageSparql);
	while ( it.next() ) {
	QUrl p = it["p"].uri();
	Soprano::Node o = it["o"];
	if ( p == Soprano::Vocabulary::RDF::type() ) {
	if ( o.isResource() ) {
	loadType( o.uri() );
	}
	}
	else {
	Nepomuk::Variant var = Variant::fromNode( o );
	updateKickOffLists( p, var );
	m_cache[p].append( var );
	}
	}

	m_cacheDirty = false;

	delete m_pimoThing;
	m_pimoThing = 0;
	if( hasType( Vocabulary::PIMO::Thing() ) ) {
	m_pimoThing = new Thing( m_uri );
	}
	else {
	// TODO: somehow handle pimo:referencingOccurrence and pimo:occurrence
	QueryResultIterator pimoIt = MAINMODEL->executeQuery( QString( "select ?r where { ?r <%1> <%2> . }")
	.arg( Vocabulary::PIMO::groundingOccurrence().toString() )
	.arg( QString::fromAscii( m_uri.toEncoded() ) ),
	Soprano::Query::QueryLanguageSparql );
	if( pimoIt.next() ) {
	m_pimoThing = new Thing( pimoIt.binding("r").uri() );
	}
	}

	return true;
	}
	else {
	return false;
	}
	}
	else {
	return true;
	}
	}


	void Nepomuk::ResourceData::setProperty( const QUrl& uri, const Nepomuk::Variant& value )
	{
	Q_ASSERT( uri.isValid() );

	if( store() ) {
	// step 0: make sure this resource is in the store
	QMutexLocker lock(&m_modificationMutex);

	// make sure resource values are in the store
	if ( value.simpleType() == qMetaTypeId<Resource>() ) {
	QList<Resource> l = value.toResourceList();
	for( QList<Resource>::iterator resIt = l.begin(); resIt != l.end(); ++resIt ) {
	resIt->m_data->store();
	}
	}

	// update the store
	QDBusConnection bus = QDBusConnection::sessionBus();
	QDBusMessage msg = QDBusMessage::createMethodCall( QLatin1String("org.kde.nepomuk.DataManagement"),
	QLatin1String("/datamanagement"),
	QLatin1String("org.kde.nepomuk.DataManagement"),
	QLatin1String("setProperty") );
	QString app = KGlobal::mainComponent().componentName();
	QVariantList arguments;
	- QStringList resources;
	- resources << m_uri.url();
	QVariantList varList;
	foreach( const Nepomuk::Variant var, value.toVariantList() )
	varList << var.variant();

	- arguments << resources << uri.toString() << QVariant(varList) << app;
	+ arguments << DBus::convertUriList(QList<QUrl>() << m_uri) << DBus::convertUri(uri)
	+ << QVariant(DBus::normalizeVariantList(varList)) << app;
	msg.setArguments( arguments );

	QDBusMessage reply = bus.call( msg );
	if( reply.type() == QDBusMessage::ErrorMessage ) {
	//TODO: Set the error somehow
	kWarning() << reply.errorMessage();
	return;
	}

	// update the cache for now
	if( value.isValid() )
	m_cache[uri] = value;
	else
	m_cache.remove(uri);

	// update the kickofflists
	updateKickOffLists( uri, value );
	}
	}


	void Nepomuk::ResourceData::removeProperty( const QUrl& uri )
	{
	Q_ASSERT( uri.isValid() );
	if( !m_uri.isEmpty() ) {
	QMutexLocker lock(&m_modificationMutex);

	QDBusConnection bus = QDBusConnection::sessionBus();
	QDBusMessage msg = QDBusMessage::createMethodCall( QLatin1String("org.kde.nepomuk.DataManagement"),
	QLatin1String("/datamanagement"),
	QLatin1String("org.kde.nepomuk.DataManagement"),
	QLatin1String("removeProperties") );
	QString app = KGlobal::mainComponent().componentName();
	QVariantList arguments;
	- arguments << m_uri.url() << uri.toString() << app;
	+ arguments << DBus::convertUri(m_uri) << DBus::convertUri(uri) << app;
	msg.setArguments( arguments );

	QDBusMessage reply = bus.call( msg );
	if( reply.type() == QDBusMessage::ErrorMessage ) {
	//TODO: Set the error somehow
	kWarning() << reply.errorMessage();
	return;
	}

	// Update the cache
	m_cache.remove( uri );

	// update the kickofflists
	updateKickOffLists( uri, Variant() );
	}
	}


	void Nepomuk::ResourceData::remove( bool recursive )
	{
	Q_UNUSED(recursive)
	QMutexLocker lock(&m_modificationMutex);

	if( !m_uri.isEmpty() ) {
	QDBusConnection bus = QDBusConnection::sessionBus();
	QDBusMessage msg = QDBusMessage::createMethodCall( QLatin1String("org.kde.nepomuk.DataManagement"),
	QLatin1String("/datamanagement"),
	QLatin1String("org.kde.nepomuk.DataManagement"),
	QLatin1String("removeResources") );
	QString app = KGlobal::mainComponent().componentName();
	QVariantList arguments;
	// TODO: Set the flag over here
	- arguments << m_uri.url() << 0 << app;
	+ arguments << DBus::convertUri(m_uri) << 0 << app;
	msg.setArguments( arguments );

	QDBusMessage reply = bus.call( msg );
	if( reply.type() == QDBusMessage::ErrorMessage ) {
	//TODO: Set the error somehow
	kWarning() << reply.errorMessage();
	return;
	}
	}

	resetAll();
	}


	bool Nepomuk::ResourceData::exists()
	{
	if( m_uri.isValid() ) {
	const QString query = QString::fromLatin1("ask { %1 ?p ?o . }")
	.arg( Soprano::Node::resourceToN3(m_uri) );
	return MAINMODEL->executeQuery( query, Soprano::Query::QueryLanguageSparql ).boolValue();
	}
	else {
	return false;
	}
	}


	bool Nepomuk::ResourceData::isValid() const
	{
	return( !m_mainType.isEmpty() && ( !m_uri.isEmpty() \|\| !m_kickoffUris.isEmpty() ) );
	}


	Nepomuk::ResourceData* Nepomuk::ResourceData::determineUri()
	{
	// We have the following possible situations:
	// 1. m_uri is already valid
	// -> simple, nothing to do
	//
	// 2. m_uri is not valid
	// -> we need to determine the URI
	//
	// 2.1. m_kickoffUri is valid
	// 2.1.1. it is a file URL
	// 2.1.1.1. it is nie:url for r
	// -> use r as m_uri
	// 2.1.1.2. it points to a file on a removable device for which we have a filex:/ URL
	// -> use the r in r nie:url filex:/...
	// 2.1.1.3. it is a file which is not an object in some nie:url relation
	// -> create new random m_uri and use kickoffUriOrId() as m_nieUrl
	// 2.1.2. it is a resource URI
	// -> use it as m_uri
	//
	// 2.2. m_kickOffUri is not valid
	// 2.2.1. m_kickOffUri is a nao:identifier for r
	// -> use r as m_uri
	//

	if( m_uri.isEmpty() ) {
	Soprano::Model* model = MAINMODEL;

	if( !m_kickoffUris.isEmpty() ) {
	KUrl kickOffUri = *m_kickoffUris.begin();
	if( kickOffUri.scheme().isEmpty() ) {
	//
	// Not valid. Checking for nao:identifier
	//
	QString query = QString::fromLatin1("select distinct ?r where { ?r %1 %2. } LIMIT 1")
	.arg( Soprano::Node::resourceToN3(Soprano::Vocabulary::NAO::identifier()) )
	.arg( Soprano::Node::literalToN3( kickOffUri.url() ) );

	Soprano::QueryResultIterator it = model->executeQuery( query, Soprano::Query::QueryLanguageSparql );
	if( it.next() ) {
	m_uri = it["r"].uri();
	it.close();
	}
	}
	else {
	//
	// In one query determine if the URI is already used as resource URI or as
	// nie:url
	//
	QString query = QString::fromLatin1("select distinct ?r ?o where { "
	"{ ?r %1 %2 . FILTER(?r!=%2) . } "
	"UNION "
	"{ %2 ?p ?o . } "
	"} LIMIT 1")
	.arg( Soprano::Node::resourceToN3( Nepomuk::Vocabulary::NIE::url() ) )
	.arg( Soprano::Node::resourceToN3( kickOffUri ) );
	Soprano::QueryResultIterator it = model->executeQuery( query, Soprano::Query::QueryLanguageSparql );
	if( it.next() ) {
	QUrl uri = it["r"].uri();
	if( uri.isEmpty() ) {
	m_uri = kickOffUri;
	}
	else {
	m_uri = uri;
	m_nieUrl = kickOffUri;
	}
	it.close();
	}
	else if( kickOffUri.scheme() == QLatin1String("nepomuk") ) {
	// for nepomuk URIs we simply use the kickoff URI as resource URI
	m_uri = kickOffUri;
	}
	else {
	// for everything else we use m_kickoffUri as nie:url with a new random m_uri
	m_nieUrl = kickOffUri;
	}
	}
	}
	}

	//
	// Move us to the final data hash now that the URI is known
	//
	if( !m_uri.isEmpty() ) {
	//vHanda: Is there some way to avoid this hash lookup every time?
	// It sure would speed things up.
	ResourceDataHash::iterator it = m_rm->m_initializedData.find(m_uri);
	if( it == m_rm->m_initializedData.end() ) {
	m_rm->m_initializedData.insert( m_uri, this );
	}
	else {
	return it.value();
	}
	}

	return this;
	}


	void Nepomuk::ResourceData::invalidateCache()
	{
	m_cacheDirty = true;
	}


	Nepomuk::Thing Nepomuk::ResourceData::pimoThing()
	{
	load();
	if( !m_pimoThing ) {
	//
	// We only create a new thing if we are a nie:InformationElement.
	// All other resources will simply be converted into a pimo:Thing
	//
	// Files, however, are a special case in every aspect. this includes pimo things.
	// Files are their own grounding occurrence. This makes a lot of things
	// much simpler.
	//
	if( hasType( Vocabulary::PIMO::Thing() ) \|\|
	isFile() \|\|
	!hasType( Vocabulary::NIE::InformationElement() ) ) {
	m_pimoThing = new Thing(this);
	}
	else {
	m_pimoThing = new Thing();
	}
	m_pimoThing->m_data->m_groundingOccurence = this;
	}
	return *m_pimoThing;
	}


	bool Nepomuk::ResourceData::operator==( const ResourceData& other ) const
	{
	if( this == &other )
	return true;

	return( m_uri == other.m_uri &&
	m_mainType == other.m_mainType &&
	m_kickoffUris == other.m_kickoffUris );
	}


	QDebug Nepomuk::ResourceData::operator<<( QDebug dbg ) const
	{
	KUrl::List list = m_kickoffUris.toList();
	dbg << QString::fromLatin1("[kickoffuri: %1; uri: %2; type: %3; ref: %4]")
	.arg( list.toStringList().join(QLatin1String(",")),
	m_uri.url(),
	m_mainType.toString() )
	.arg( m_ref );

	return dbg;
	}


	QDebug operator<<( QDebug dbg, const Nepomuk::ResourceData& data )
	{
	return data.operator<<( dbg );
	}


	void Nepomuk::ResourceData::updateKickOffLists(const QUrl& prop, const Nepomuk::Variant& v)
	{
	KUrl oldUrl;
	KUrl newUrl;
	if( prop == Nepomuk::Vocabulary::NIE::url() ) {
	oldUrl = m_nieUrl;
	newUrl = v.toUrl();
	m_nieUrl = newUrl;
	}
	else if( prop == Soprano::Vocabulary::NAO::identifier() ) {
	Q_FOREACH( const KUrl& url, m_kickoffUris ) {
	if( url.scheme().isEmpty() ) {
	oldUrl = url;
	break;
	}
	}
	newUrl = KUrl( v.toString() );
	}
	else {
	return;
	}

	if( oldUrl != newUrl ) {
	QMutexLocker rmlock(&m_rm->mutex);

	m_kickoffUris.remove( oldUrl );
	m_rm->m_uriKickoffData.remove( oldUrl );

	if( !newUrl.isEmpty() ) {
	m_kickoffUris.insert( newUrl );
	m_rm->m_uriKickoffData.insert( newUrl, this );
	}
	}
	}
	diff --git a/nepomuk/core/resourcemanager.cpp b/nepomuk/core/resourcemanager.cpp
	index e8ce31d63d..e3ed0bdfb7 100644
	--- a/nepomuk/core/resourcemanager.cpp
	+++ b/nepomuk/core/resourcemanager.cpp
	@@ -1,538 +1,541 @@
	/*
	* This file is part of the Nepomuk KDE project.
	* Copyright (C) 2006-2010 Sebastian Trueg <trueg@kde.org>
	* Copyright (C) 2010 Vishesh Handa <handa.vish@gmail.com>
	*
	* This library 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 library 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 library; see the file COPYING.LIB. If not, write to
	* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*/

	#include "resourcemanager.h"
	#include "resourcemanager_p.h"
	#include "resourcedata.h"
	#include "tools.h"
	#include "nepomukmainmodel.h"
	#include "resource.h"
	#include "class.h"
	#include "nie.h"
	+#include "dbustypes.h"

	#include <kglobal.h>
	#include <kdebug.h>
	#include <krandom.h>

	#include <Soprano/Node>
	#include <Soprano/Statement>
	#include <Soprano/Vocabulary/RDF>
	#include <Soprano/StatementIterator>
	#include <Soprano/QueryResultIterator>

	#include <QtCore/QFileInfo>
	#include <QtCore/QMutex>
	#include <QtCore/QMutexLocker>
	#include <QtCore/QUuid>
	#include <QtCore/QMutableHashIterator>
	#include <QtCore/QCoreApplication>
	#include <QtDBus/QDBusConnection>
	#include <QtDBus/QDBusConnectionInterface>
	#include <QtDBus/QDBusServiceWatcher>
	+#include <QtDBus/QDBusMetaType>

	using namespace Soprano;

	Nepomuk::ResourceManager* Nepomuk::ResourceManager::s_instance = 0;

	Nepomuk::ResourceManagerPrivate::ResourceManagerPrivate( ResourceManager* manager )
	: mainModel( 0 ),
	overrideModel( 0 ),
	mutex(QMutex::Recursive),
	dataCnt( 0 ),
	m_manager( manager )
	{
	+ Nepomuk::DBus::registerDBusTypes();
	}


	Nepomuk::ResourceData* Nepomuk::ResourceManagerPrivate::data( const QUrl& uri, const QUrl& type )
	{
	if ( uri.isEmpty() ) {
	// return an invalid resource which may be activated by calling setProperty
	return new ResourceData( QUrl(), QUrl(), type, this );
	}

	if( ResourceData* data = findData( uri ) ) {
	return data;
	}
	else {
	return new ResourceData( QUrl(), uri, type, this );
	}
	}


	Nepomuk::ResourceData* Nepomuk::ResourceManagerPrivate::data( const QString& uriOrId, const QUrl& type )
	{
	if ( !uriOrId.isEmpty() ) {
	KUrl url(uriOrId);
	return data( url, type );
	}

	return new ResourceData( QUrl(), QUrl(), type, this );
	}


	Nepomuk::ResourceData* Nepomuk::ResourceManagerPrivate::dataForResourceUri( const QUrl& uri, const QUrl& type )
	{
	if ( uri.isEmpty() ) {
	// return an invalid resource which may be activated by calling setProperty
	return new ResourceData( QUrl(), QUrl(), type, this );
	}

	if( ResourceData* data = findData( uri ) ) {
	return data;
	}
	else {
	return new ResourceData( uri, QUrl(), type, this );
	}
	}


	QList<Nepomuk::ResourceData*> Nepomuk::ResourceManagerPrivate::allResourceDataOfType( const QUrl& type )
	{
	QList<ResourceData*> l;

	if( !type.isEmpty() ) {
	mutex.lock();
	QSet<ResourceData*> rdl = m_uriKickoffData.values().toSet();
	mutex.unlock();
	for( QSet<ResourceData*>::iterator rdIt = rdl.begin();
	rdIt != rdl.end(); ++rdIt ) {
	ResourceData* rd = *rdIt;
	//
	// make sure we do not trigger a load here since
	// 1. that could result in the deletion of values from the iterated list (m_cache.clear() in ResourceData::load)
	// 2. We only need to check non-existing resources anyway, since the rest is queried from the db below
	//
	if( rd->constHasType( type ) ) {
	l.append( rd );
	}
	}
	}

	return l;
	}


	QList<Nepomuk::ResourceData*> Nepomuk::ResourceManagerPrivate::allResourceDataWithProperty( const QUrl& uri, const Variant& v )
	{
	QList<ResourceData*> l;

	//
	// We need to cache m_uriKickoffData since it might be changed
	// in the loop by ResourceData::load()
	//
	mutex.lock();
	QSet<ResourceData*> rdl = m_uriKickoffData.values().toSet();
	mutex.unlock();

	//
	// make sure none of the ResourceData objects are deleted by ResourceData::load below
	// which would result in a crash since we have them cached.
	//
	QList<Resource> tmp;
	foreach( ResourceData* rd, rdl ) {
	tmp << Resource( rd );
	}

	for( QSet<ResourceData*>::iterator rdIt = rdl.begin();
	rdIt != rdl.end(); ++rdIt ) {
	ResourceData* rd = *rdIt;
	if( rd->hasProperty( uri ) &&
	rd->property( uri ) == v ) {
	l.append( rd );
	}
	}

	return l;
	}


	QList<Nepomuk::ResourceData*> Nepomuk::ResourceManagerPrivate::allResourceData()
	{
	return m_uriKickoffData.values().toSet().toList();
	}


	bool Nepomuk::ResourceManagerPrivate::dataCacheFull() const
	{
	return dataCnt >= 1000;
	}


	void Nepomuk::ResourceManagerPrivate::cleanupCache( int num )
	{
	QMutexLocker lock( &mutex );

	QSet<ResourceData*> rdl = m_uriKickoffData.values().toSet() + m_initializedData.values().toSet();
	for( QSet<ResourceData*>::iterator rdIt = rdl.begin();
	rdIt != rdl.end(); ++rdIt ) {
	ResourceData* data = *rdIt;
	if ( !data->cnt() ) {
	delete data;
	if( num > 0 && --num == 0 )
	break;
	}
	}
	}


	bool Nepomuk::ResourceManagerPrivate::shouldBeDeleted( ResourceData * rd ) const
	{
	//
	// We delete data objects in one of two cases:
	// 1. They are not valid and as such not in one of the ResourceManagerPrivate kickoff lists
	// 2. The cache is already full and we need to clean up
	//
	return( !rd->cnt() && ( !rd->isValid() \|\| dataCacheFull() ));
	}


	void Nepomuk::ResourceManagerPrivate::addToKickOffList( ResourceData* rd, const QSet<KUrl> & uris )
	{
	Q_FOREACH( const KUrl& uri, uris )
	m_uriKickoffData.insert( uri, rd );
	}


	void Nepomuk::ResourceManagerPrivate::_k_storageServiceInitialized( bool success )
	{
	if( success ) {
	kDebug() << "Nepomuk Storage service up and initialized.";
	cleanupCache(-1);
	m_manager->init();
	emit m_manager->nepomukSystemStarted();
	}
	}


	void Nepomuk::ResourceManagerPrivate::_k_dbusServiceUnregistered( const QString& serviceName )
	{
	if( serviceName == QLatin1String("org.kde.NepomukStorage") ) {
	kDebug() << "Nepomuk Storage service went down.";
	cleanupCache(-1);
	emit m_manager->nepomukSystemStopped();
	}
	}



	Nepomuk::ResourceData* Nepomuk::ResourceManagerPrivate::findData( const QUrl& uri )
	{
	if ( !uri.isEmpty() ) {
	QMutexLocker lock( &mutex );

	// look for the URI in the initialized and in the URI kickoff data
	ResourceDataHash::iterator end = m_initializedData.end();
	ResourceDataHash::iterator it = m_initializedData.find( uri );
	if( it == end ) {
	end = m_uriKickoffData.end();
	it = m_uriKickoffData.find( uri );
	}

	if( it != end ) {
	return it.value();
	}
	}

	return 0;
	}


	Nepomuk::ResourceManager::ResourceManager()
	: QObject(),
	d( new ResourceManagerPrivate( this ) )
	{
	// connect to the storage service's initialized signal to be able to emit
	// the nepomukSystemStarted signal
	QDBusConnection::sessionBus().connect( QLatin1String("org.kde.NepomukStorage"),
	QLatin1String("/servicecontrol"),
	QLatin1String("org.kde.nepomuk.ServiceControl"),
	QLatin1String("serviceInitialized"),
	this,
	SLOT(_k_storageServiceInitialized(bool)) );

	// connect to the serviceUnregistered signal to be able to connect the nepomukSystemStopped
	// signal once the storage service goes away
	QDBusServiceWatcher *watcher = new QDBusServiceWatcher( QLatin1String("org.kde.NepomukStorage"),
	QDBusConnection::sessionBus(),
	QDBusServiceWatcher::WatchForUnregistration,
	this );
	connect( watcher, SIGNAL(serviceUnregistered(QString)),
	this, SLOT(_k_dbusServiceUnregistered(QString)) );

	init();
	}


	Nepomuk::ResourceManager::~ResourceManager()
	{
	clearCache();
	delete d->mainModel;
	delete d;

	if(s_instance == this) {
	s_instance = 0;
	}
	}


	void Nepomuk::ResourceManager::deleteInstance()
	{
	delete this;
	}


	Nepomuk::ResourceManager* Nepomuk::ResourceManager::instance()
	{
	if(!s_instance) {
	s_instance = new ResourceManager();
	s_instance->setParent(QCoreApplication::instance());
	}
	return s_instance;
	}


	int Nepomuk::ResourceManager::init()
	{
	QMutexLocker lock( &d->initMutex );

	if( !d->mainModel ) {
	d->mainModel = new MainModel( this );
	}

	d->mainModel->init();

	return d->mainModel->isValid() ? 0 : -1;
	}


	bool Nepomuk::ResourceManager::initialized() const
	{
	QMutexLocker lock( &d->initMutex );
	return d->mainModel && d->mainModel->isValid();
	}


	#ifndef KDE_NO_DEPRECATED
	Nepomuk::Resource Nepomuk::ResourceManager::createResourceFromUri( const QString& uri )
	{
	return Resource( uri, QUrl() );
	}
	#endif

	void Nepomuk::ResourceManager::removeResource( const QString& uri )
	{
	Resource res( uri );
	res.remove();
	}

	void Nepomuk::ResourceManager::notifyError( const QString& uri, int errorCode )
	{
	kDebug() << "(Nepomuk::ResourceManager) error: " << uri << " " << errorCode;
	emit error( uri, errorCode );
	}


	#ifndef KDE_NO_DEPRECATED
	QList<Nepomuk::Resource> Nepomuk::ResourceManager::allResourcesOfType( const QString& type )
	{
	return allResourcesOfType( QUrl(type) );
	}
	#endif


	QList<Nepomuk::Resource> Nepomuk::ResourceManager::allResourcesOfType( const QUrl& type )
	{
	QSet<Resource> set;

	if( !type.isEmpty() ) {
	// check local data
	QList<ResourceData*> localData = d->allResourceDataOfType( type );
	for( QList<ResourceData*>::iterator rdIt = localData.begin();
	rdIt != localData.end(); ++rdIt ) {
	Resource res( *rdIt );
	set.insert(res);
	}

	// kDebug() << " added local resources: " << l.count();

	Soprano::Model* model = mainModel();
	Soprano::StatementIterator it = model->listStatements( Soprano::Statement( Soprano::Node(), Soprano::Vocabulary::RDF::type(), type ) );

	while( it.next() ) {
	Statement s = *it;
	Resource res( s.subject().uri() );
	set.insert(res);
	}

	// kDebug() << " added remote resources: " << l.count();
	}

	return set.toList();
	}


	QList<Nepomuk::Resource> Nepomuk::ResourceManager::allResources()
	{
	QList<Nepomuk::Resource> l;
	Q_FOREACH( ResourceData* data, d->allResourceData()) {
	l << Resource( data );
	}

	Soprano::QueryResultIterator it = mainModel()->executeQuery( QLatin1String("select distinct ?r where { ?r a ?t . FILTER(?t != rdf:Property && ?t != rdfs:Class) . }"),
	Soprano::Query::QueryLanguageSparql );
	while( it.next() ) {
	Resource r( it[0].uri() );
	l << r;
	}

	return l;
	}


	#ifndef KDE_NO_DEPRECATED
	QList<Nepomuk::Resource> Nepomuk::ResourceManager::allResourcesWithProperty( const QString& uri, const Variant& v )
	{
	return allResourcesWithProperty( QUrl(uri), v );
	}
	#endif


	QList<Nepomuk::Resource> Nepomuk::ResourceManager::allResourcesWithProperty( const QUrl& uri, const Variant& v )
	{
	QSet<Resource> set;

	if( v.isList() ) {
	kDebug() << "(ResourceManager::allResourcesWithProperty) list values not supported.";
	}
	else {
	// check local data
	QList<ResourceData*> localData = d->allResourceDataWithProperty( uri, v );
	for( QList<ResourceData*>::iterator rdIt = localData.begin();
	rdIt != localData.end(); ++rdIt ) {
	set.insert( Resource( *rdIt ) );
	}

	// check remote data
	Soprano::Model* model = mainModel();
	Soprano::StatementIterator it = model->listStatements( Soprano::Statement( Soprano::Node(), uri, v.toNode() ) );

	while( it.next() ) {
	Statement s = *it;
	Resource res( s.subject().uri() );
	set.insert( res );
	}
	}

	return set.toList();
	}


	void Nepomuk::ResourceManager::clearCache()
	{
	d->cleanupCache( -1 );
	}


	#ifndef KDE_NO_DEPRECATED
	QString Nepomuk::ResourceManager::generateUniqueUri()
	{
	return generateUniqueUri( QString() ).toString();
	}
	#endif


	QUrl Nepomuk::ResourceManager::generateUniqueUri( const QString& name )
	{
	// default to res URIs
	QString type = QLatin1String("res");

	// ctx is the only used value for name
	if(name == QLatin1String("ctx")) {
	type = name;
	}

	Soprano::Model* model = mainModel();

	while( 1 ) {
	QString uuid = QUuid::createUuid().toString();
	uuid = uuid.mid(1, uuid.length()-2);
	QUrl uri = QUrl( QLatin1String("nepomuk:/") + type + QLatin1String("/") + uuid );
	if ( !model->executeQuery( QString::fromLatin1("ask where { "
	"{ <%1> ?p1 ?o1 . } "
	"UNION "
	"{ ?s2 <%1> ?o2 . } "
	"UNION "
	"{ ?s3 ?p3 <%1> . } "
	"UNION "
	"{ graph <%1> { ?s4 ?4 ?o4 . } . } "
	"}")
	.arg( QString::fromAscii( uri.toEncoded() ) ), Soprano::Query::QueryLanguageSparql ).boolValue() ) {
	return uri;
	}
	}
	}


	Soprano::Model* Nepomuk::ResourceManager::mainModel()
	{
	// make sure we are initialized
	if ( !d->overrideModel && !initialized() ) {
	init();
	}

	return d->mainModel;
	}


	void Nepomuk::ResourceManager::slotStoreChanged()
	{
	QMutexLocker lock( &d->mutex );

	Q_FOREACH( ResourceData* data, d->allResourceData()) {
	data->invalidateCache();
	}
	}


	void Nepomuk::ResourceManager::setOverrideMainModel( Soprano::Model* model )
	{
	QMutexLocker lock( &d->mutex );

	if( model != d->mainModel ) {
	d->overrideModel = model;

	// clear cache to make sure we do not mix data
	Q_FOREACH( ResourceData* data, d->allResourceData()) {
	data->invalidateCache();
	}
	}
	}


	Nepomuk::ResourceManager* Nepomuk::ResourceManager::createManagerForModel( Soprano::Model* model )
	{
	ResourceManager* manager = new ResourceManager();
	manager->setOverrideMainModel( model );
	return manager;
	}

	#include "resourcemanager.moc"

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