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#ifndef CNTSRVCONNECTION_H
#define CNTSRVCONNECTION_H

// System includes
#include <e32std.h>
#include <cntdb.h>
#include <qcontactmanager.h>
#include <qcontactmanagerengine.h>

// User includes

// Forward declarations

// External data types

// Constants

QTM_USE_NAMESPACE
class CntSymbianSrvConnection : public RSessionBase
{
public:

    enum QueryType {
            CntNotdefined = 0,
            CntPredictiveSearchList = 98,
            CntSearchResultList = 99
        };
public:
    /*Constructor and destructor*/
    CntSymbianSrvConnection(QContactManagerEngine* engine);
    ~CntSymbianSrvConnection();
    
public:
    /* QT like functions */
    QList<QContactLocalId> searchContacts(const QString& searchQuery, 
                                          QContactManager::Error* error);
    QContact searchContactName(QContactLocalId contactId,
                               QContactManager::Error* error);
    QList<QContactLocalId> searchOnServer(const QString& searchQuery,
                            QueryType aQueryType,
                            QContactManager::Error* error);
    QList<QContact> searchAllContactNames(QContactManager::Error* error);
    QList<QPair<QContactLocalId, QString> > searchPhoneNumbers(const QString& searchQuery, 
                                                  QContactManager::Error* error);

private:
    /* Symbian Leaving functions */
    QList<QContactLocalId> searchContactIdsL(const TDesC& aSqlQuery, QueryType aQueryType);
    QList<QContact> searchContactNamesL(const TDesC& aSqlQuery);
    QList<QPair<QContactLocalId, QString> > searchPhoneNumbersL(const TDesC& aSqlQuery, QueryType aQueryType);
    void readContactsToBufferL(const TDesC& aSqlQuery, QueryType aQueryType);
    void ConnectSrvL();
    void OpenDatabaseL();
    TVersion Version() const;
    TDes8& GetReceivingBufferL(TInt aSize=0);

private:
    /* member varibles */ 
    QContactManagerEngine* m_manager;
    CBufFlat* m_buffer;
    TInt m_maxBufferSize;
    TPtr8 m_bufPtr;
    bool m_isInitialized;
    
    friend class ut_cntsymbianfiltersqlhelper;
};

#endif //CNTSRVCONNECTION_H