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#ifndef CNTSYMBIANDATABASE_H
#define CNTSYMBIANDATABASE_H

// System includes
#include <QList>
#include <QObject>
#include <e32std.h>
#include <cntdb.h>
#include <cntdbobs.h>

// User includes
#include "qcontactmanager.h"

// Forward declarations
QTM_BEGIN_NAMESPACE
class QContactManagerEngine;
QTM_END_NAMESPACE

QTM_USE_NAMESPACE
// External data types

// Constants

class CntSymbianDatabase : public QObject, public MContactDbObserver
#ifdef SYMBIAN_BACKEND_USE_SQLITE  
, public MContactDbObserverV2
#endif
{
Q_OBJECT

public:
    CntSymbianDatabase(QContactManagerEngine *engine, QContactManager::Error* error);
    ~CntSymbianDatabase();

public:
    CContactDatabase* contactDatabase();
    void appendContactsEmitted(const QList<QContactLocalId>& contactList);
    void appendContactEmitted(QContactLocalId id);

public:
    // From MContactDbObserver
    void HandleDatabaseEventL(TContactDbObserverEvent aEvent);

#ifdef SYMBIAN_BACKEND_USE_SQLITE    
    // From MContactDbObserverV2
    void HandleDatabaseEventV2L(TContactDbObserverEventV2 aEvent);
#endif    
    
private:
    void initializeL();
    void updateGroupMembershipsL();
    void updateGroupMembershipsL(QContactLocalId groupId, QSet<QContactLocalId> &added, QSet<QContactLocalId> &removed);
    QSet<QContactLocalId> groupMembersL(QContactLocalId groupId);

private:
#ifndef SYMBIAN_BACKEND_USE_SQLITE
    CContactChangeNotifier* m_contactChangeNotifier;
#endif
    QContactManagerEngine *m_engine;
    CContactDatabase* m_contactDatabase;
    QList<QContactLocalId> m_contactsEmitted;
    QContactLocalId m_currentOwnCardId;
    QMap<QContactLocalId, QSet<QContactLocalId> > m_groupContents;
#ifdef CNTSYMBIANDATABASE_UNIT_TEST
    friend class TestCntSymbianDatabase;
#endif  //CNTSYMBIANDATABASE_UNIT_TEST
};

#endif // CNTSYMBIANDATABASE_H
