ncdengine/engine/inc/catalogsclientserverserver.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:51:10 +0200
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:   Class CCatalogsClientServerServer declaration
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*
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*/
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#ifndef C_CATALOGS_CLIENT_SERVER_SERVER_H
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#define C_CATALOGS_CLIENT_SERVER_SERVER_H
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#include <e32base.h>
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#include "catalogsshutdownoperation.h"
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class CCatalogsServerEngine;
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class MCatalogsSession;
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class MCatalogsContext;
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class CCatalogsClientServerServer : 
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    public CServer2, 
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    public MCatalogsShutdownOperationObserver
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    {
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public:
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    /**
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     * Static constructor, leaves pointer on cleanup stack
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     */
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    static CCatalogsClientServerServer* NewLC();
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    /**
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     * Destructor
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     */
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    virtual ~CCatalogsClientServerServer();
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    /**
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     * Main function for the server thread.
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     * 
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     * @since S60 ?S60_version
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     * @param aNone  Not used.
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     * @return System wide error code.
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     */
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    static TInt ThreadFunction( TAny* aNone );
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    /**
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     * Increments the count of the active sessions for this server.
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     *
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     * @since S60 ?S60_version
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     */
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    void IncrementSessions();
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    /**
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     * Decrements the count of the active sessions for this server.
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     *
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     * @since S60 ?S60_version
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     */
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    void DecrementSessions();
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    /**
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     * Informs objects of session removal. They should not use
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     * given session in anyway anymore
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     *
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     * @since S60 ?S60_version
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     * @param aSession Session that is not in use anymore.
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     */   
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    void HandleSessionRemoval( MCatalogsSession& aSession );
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    /**
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     * Create a new object container. Called by sessions.
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     *
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     * @since S60 ?S60_version
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     * @return Created object container.
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     */
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    CObjectCon* NewContainerL();
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    /**
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     * Removes an object container. Called by sessions.
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     *
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     * @since S60 ?S60_version
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     * @param aCon Container that should be removed.
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     */
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    void RemoveContainer( CObjectCon* aCon );
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    /**
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     * Adds an object to container. These objects are objects
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     * that communicate to client-side. Called by sessions. Leaves
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     * on error, but not if the object is tried to add for a second
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     * time into the container. Then simply does not do anything.
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     *
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     * @since S60 ?S60_version
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     * @param aObject Object that is communicable.
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     */    
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    void AddObjectToContainerL( CObject* aObject );      
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    /**
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     * Function that conveys provider creation request to the
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     * engine.
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     * 
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     * @since S60 ?S60_version
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     * @param aSession Interface to register objects.
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     * @param aProviderIdentifier Int (uid) to identify desired provider
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     * @param aHandle Reference to an integer which is used to
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     *                       pass the handle to the created provider back.
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     * @param aProviderOptions Provider options
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     */    
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    void CreateProviderL( MCatalogsSession& aSession, 
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                         TInt aProviderIdentifier,
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                         TInt& aHandle,
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                         TUint32 aProviderOptions );
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    TInt NewInstanceId();
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    /**
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     * Adds a shutdown operation to the server's operation queue
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     * The operation is deleted if appending fails
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     * 
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     * @return Symbian error code
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     */
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    static TInt AddShutdownOperation( CCatalogsShutdownOperation* aOperation );
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    /**
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     * Executes/cancels shutdown operations for the given client
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     * 
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     * @param aContext
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     * @param aExecute If ETrue, shutdown operations are executed, 
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     * if false they are canceled
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     */
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    void OperateShutdownOperations( 
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        const MCatalogsContext& aContext,
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        TBool aExecute );
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protected: // MCatalogsShutdownOperationObserver
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    void ShutdownOperationComplete( 
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        CCatalogsShutdownOperation* aOperation, 
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        TInt aError );
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protected:  // Methods from CActive
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// from base class CActive    
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    /**
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     * From CActive
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     * @see CActive::RunError
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     *
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     * @since S60 ?S60_version
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     */
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    TInt RunError( TInt aError );
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private:
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    /**
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     * Constructor
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     * 
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     * @param aPriority Priority for this thread.
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     */
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    CCatalogsClientServerServer( TInt aPriority );
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    /**
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     * Second phase construct.
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     */
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    void ConstructL();
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    /**
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     * Second stage startup for the server thread.
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     *
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     * @since S60 ?S60_version
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     */
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    static void ThreadFunctionL();
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// from base class CServer    
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    /**
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     * From CServer
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     * @see CServer::NewSessionL
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     *
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     * @since S60 ?S60_version
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     */
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    CSession2* NewSessionL( const TVersion& aVersion, 
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                            const RMessage2& aMsg ) const;
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private:
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    static CCatalogsClientServerServer* iCatalogsServer;
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    /**
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     * Amount of sessions.
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     */
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    TInt iSessionCount;
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    /**
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     * Server-side engine
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     * Own.
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     */    
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    CCatalogsServerEngine* iEngine;
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    /**
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     * Object container index
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     * Own.
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     */
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	CObjectConIx* iContainerIndex;
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    /**
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     * Container of objects that are registered as objects which
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     * communicate to client-side.
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     * Own.
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     */
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    CObjectCon* iContainer;
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#ifdef CATALOGS_UNDERTAKER
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    RProcess    iUndertakerProcess;
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#endif
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    /**
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     * Counter, used for identifying session instances.
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     */
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    TInt iSessionInstanceIdCounter;
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    RPointerArray<CCatalogsShutdownOperation> iShutdownOperations;
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    };
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#endif // C_CATALOGS_CLIENT_SERVER_SERVER_H
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