public: // Constructors and destructor

	    /**

	    * Two-phased constructor.

	    */

	    static CSPSettingsEngine* NewL();

	    /**

	    * Two-phased constructor.

	    */

	    static CSPSettingsEngine* NewLC();

	    /**

	    * Destructors.

	    */

	    virtual ~CSPSettingsEngine();

	public: // memeber functions

	    /**

	     * Starts transaction in repository

	     *

	     * @since S60 v3.2

	     */

	    TInt BeginTransactionLC();

	    /**

	     * Commits changes in repository

	     *

	     * @since S60 v3.2

	     */

	    TInt CommitTransaction();

	    /**

	     * Rollback changes in repository

	     *

	     * @since S60 v3.2

	     */

	    void RollbackTransaction();

	    /**

	     * Stores new service provider settings entry

	     *

	     * @since S60 v3.2

	     * @param aEntry New service provider settings entry, on return service Id is filled in

	     */

	    void AddEntryL( CSPEntry& aEntry );

	    /**

	     * Search service provider settings entry by service ID. 

	     *

	     * @since S60 v3.2

	     * @param aServiceId Id of requested xSP settings entry

	     * @param aEntry on return, SP settings entry corresponding to aServiceId.

	     * @return error code, KErrNone if succeeded, otherwise system wide error code

	     */

	    TInt FindEntryL( TServiceId aServiceId, CSPEntry& aEntry );

	    /**

	     * Updates service provider settings entry to settings storage.

	     *

	     * @since S60 v3.2

	     * @param aEntry Updated service provider settings entry

	     * @return error code, KErrNone if update succeeded, otherwise system wide error code

	     */

	    TInt UpdateEntryL( const CSPEntry& aEntry );

	    /**

	     * Deletes service provider settings entry from storage by service ID.

	     *

	     * @since S60 v3.2

	     * @param aEntryId Id of settings entry which is going to be deleted

	     * @return error code, KErrNone if delete succeeded, otherwise system wide error code

	     */

	    TInt DeleteEntryL( TServiceId aServiceId );

	    /**

	     * Search property of service provider settings entry from storage.

	     *

	     * @since S60 v3.2

	     * @param aServiceId The service ID of requested service entry

	     * @param aPropertyName property name to be found

	     * @param aProperty on return, requested property

	     * @return error code, KErrNone if succeeded, otherwise system wide error code

	     */

	    TInt FindPropertyL( TServiceId aServiceId, 

	                        TServicePropertyName aPropertyName,

	                        CSPProperty& aProperty );

	    /**

	     * Add or update properties of service provider settings entry to storage.

	     * If property name exists, update property. If property doesn't exist,

	     *

	     * @since S60 v3.2

	     * @param aServiceId The ID of updated service entry

	     * @param aPropertyArray new properties to be added or updated

	     * @return error code, KErrNone if update succeeded, otherwise system wide error code

	     */

	    TInt AddOrUpdatePropertiesL( TServiceId aServiceId, const RPropertyArray& aPropertyArray );

	    /**

	     * Return count of service provider settings entries in storage.

	     *

	     * @since S60 v3.2

	     * @return Count of stored service provider settings.

	     */

	    TInt SettingsCountL();

	    /**

	     * Search all service provider IDs from storage

	     *

	     * @since S60 v3.2

	     * @param aServiceIds An array containing returned service IDs

	     * @return error code

	     */

	    TInt FindServiceIdsL( RIdArray& aServiceIds );

	    /**

	     * Search all service names from settings storage by given service IDs.

	     * Removes service ID from given array if corresponding service name

	     * is not found. 

	     *

	     * @since S60 v3.2

	     * @param aServiceIds An array of service IDs

	     * @param aServiceNames on return, array which saves found service names 

	     */

	    void FindServiceNamesL( RIdArray& aServiceIds, CDesCArray& aServiceNames );

	   /**

	     * Search subservice properties of requested service provider settings entry by ID.

	     *

	     * @since S60 v3.2

	     * @param aServiceId The ID of requested service entry

	     * @param aPropertyType property type of sub service

	     * @param aPropertyArray on return,  array which saves found subservice properties

	     * @return error code

	     */

	    TInt FindSubServicePropertiesL( TServiceId aServiceId,

	    								TSPItemType aPropertyType,

	                                   RPropertyArray& aPropertyArray );

	    /**

	     * Deletes service properties by service ID and property name.

	     *

	     * @since S60 v3.2

	     * @param aServiceId The service ID of requested service entry

	     * @param aNameArray name of properties to be deleted

	     * @return error code

	     */

	    TInt DeleteServicePropertiesL( TServiceId aServiceId,

	                                   const RPropertyNameArray& aNameArray );

	    /**

	     * Find service IDs with same properties

	     *

	     * @since S60 v3.2

	     * @param aPropertyArray property array

	     * @param on return, service Ids with same properties

	     * @return error code

	     */

	    void FindServiceIdsFromPropertiesL( const RPropertyArray& aPropertyArray, RIdArray& aServiceIds );

	    /**

	     * Check feature is supported or not

	     *

	     * @since S60 v3.2

	     * @return SIP VoIP software version

	     */

	    TBool IsFeatureSupportedL( TSPServiceFeature aFeature, 

	                               TBool aWriteAllowed );

	    /**

	     * When service table is changed, update the P&S key

	     *

	     * @since S60 v3.2

	     */

	    void UpdateSupportFeaturePSKeyL();

	    /**

	     * Check if it is VoIP Service ID

	     *

	     * @since S60 v3.2.3

	     * @return ETrue if yes

	     */

		TBool IsVoIPServiceL( TServiceId aServiceId );

	    /**		

	     * Get Name array from Property array

	     *

	     * @since S60 v3.2.3

	     */

		void NameArrayFromPropertyArrayL( RPropertyNameArray& aNameArray, const RPropertyArray& aPropertyArray );

	    /**

	     * Check if an array has call related property name in it

	     *

	     * @since S60 v3.2.3

	     * @return ETrue if yes

	     */

		TBool HasCallPropertyName( const RPropertyNameArray& aNameArray );

	    /**

	     * Check if an array has VoIP or Vmbx related property name in it

	     *

	     * @since S60 v3.2.3

	     * @return ETrue if yes

	     */

		TBool HasVoIPAndVmbxPropertyName(  const RPropertyNameArray& aNameArray );

	private:

	    /**

	    * C++ default constructor.

	    */

	    CSPSettingsEngine();

	    /**

	    * By default Symbian 2nd phase constructor is private.

	    */

	    void ConstructL();

	    /**

	     * Walk through all the sevices and check there is any service match 

	     *

	     * @since S60 v3.2

	     * @param aMask attribute mask 

	     * @param aValue value to be checked

	     */

	    TBool CheckFeatureL( TInt aMask, TInt aValue );

	private: // data