// Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef __REGISTRYRESOLVETRANSACTION_H__

#define __REGISTRYRESOLVETRANSACTION_H__

#include <e32base.h>

#include <ecom/implementationinformation.h>

//

// Forward declarations

class CRegistryData;

//

// CRegistryResolveTransaction class

/**

@internalComponent

This class facilitates filtering in the CRegistryDataClass. It does this by accepting 

filter parameters when the resolve transaction is created. During the course of the 

resolution these filter parameters will be passed to CRegistryData.

*/

class CRegistryResolveTransaction : public CBase, public MPublicRegistry

	{

public:

	static CRegistryResolveTransaction* NewL(CRegistryData &aRegistryData,

											 const RExtendedInterfacesArray& aExtendedInterfaces, 

											 const TClientRequest& aClientRequest, TBool aCapability);

	virtual ~CRegistryResolveTransaction();

public:   

	RImplInfoArray& ListImplementationsL(TUid aInterfaceUid) const;

private:

	CRegistryResolveTransaction(CRegistryData &aRegistryData,

								const RExtendedInterfacesArray& aExtendedInterfaces, 

								const TClientRequest& aClientRequest,TBool aCapability);

	void ListImplementationsL(CImplementationInformation* implInfo,CRegistryData::CDllData *aDll) const;

private:

	// A reference to the registry data

	CRegistryData &iRegistryData;

    // A pointer to the extended interfaces to filter on

    const RExtendedInterfacesArray* iExtendedInterfaces;

    // A pointer to the client request data for capability check

    const TClientRequest* iClientRequest;

    // Array to hold the filtered results. Must make this mutable so as to not

    // change the ListImplementationsL interface which has been published.

    mutable RImplInfoArray iImplementationInfo;

    // A boolean value for storing the client's capability request 

    // ETrue capability check is done

    // EFalse capability check is not done

    TBool iCapability; 

	};

#endif //__REGISTRYRESOLVETRANSACTION_H__