// Copyright (c) 2008-2009 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 MSVSEARCHSORTCACHEMANAGER_H_

#define MSVSEARCHSORTCACHEMANAGER_H_

#include <e32base.h>

#include <msvstd.h>

#include <msvsearchsortquery.h>

#include "msvsearchsortcacheentry.h"

//Forward Declaration

class CMsvSearchSortDeltaCache;

class CMsvSearchSortCacheEntry;

class CMsvEntryFreePool;

class CMsvServer;

class TSearchSortDbWrapper;

/****************************************************

 * CMSvSearchSortCacheManager

 * Description : Create a  Search and Sort Cache Manager .

 * This is a Singleton class

 * @internalComponent

 * @released

 ****************************************************/ 

NONSHARABLE_CLASS (CMSvSearchSortCacheManager) : public  CBase

    {

public:

    ~CMSvSearchSortCacheManager(); //Destructor.

	static CMSvSearchSortCacheManager* Instance(); // To access the manager instance.	

	TInt AddEntryL(const CMsvSearchSortCacheEntry& aEntry); //Add a CMsvSearchSortCacheEntry to manager,

	void MoveEntryAtEnd(CMsvSearchSortCacheEntry* aEntry, TInt aIndex); //Move the Cache entry to the end of the manager RPointer array.

	TInt QueryExists(const CMsvSearchSortCacheEntry& aEntry);

	TInt QueryExists(const TUint32 aQueryID);

	TBool IsInRange(const CMsvSearchSortCacheEntry& aEntry); // Will check the Size of the Cache.

	TBool RemoveEntry(const TInt aRequiredSize); // Will Remove the entry based on the Curent Situation.

	TBool RemoveEndEntry(const TInt aIndex); 

	void InstantiateDBwrapperL();

	void TypeOfSearchQuery(CMsvSearchSortCacheEntry& aEntry);

	void TypeOfSortQuery(CMsvSearchSortCacheEntry& aEntry);

#if (defined SYMBIAN_MESSAGESTORE_HEADER_BODY_USING_SQLDB)

	TInt IsTypeOfQuery(const CMsvSearchSortCacheEntry& aEntry);

#else

	TTypeOfQuery IsTypeOfQuery(const CMsvSearchSortCacheEntry& aEntry);	

#endif

	TInt DoProcessQueryL(const CMsvSearchSortCacheEntry& aEntry,TInt iteratorCount=0);

	TInt DoProcessQueryL(const TInt aIndex);

	TInt FinalResultAsIdL(const CMsvSearchSortCacheEntry& aEntry);

	TInt FindResultAsIdL(const CMsvSearchSortCacheEntry& aEntry);

	TInt ResultCountL(const CMsvSearchSortCacheEntry& aEntry);

	TInt ResultCountL(const TInt aIndex);

	void StoreResultL(const TInt aQid, RArray<TMsvId>& aToUpdateDb);

	TInt StoreSortResultL(const TInt aIndex,RArray<TMsvIdWithSortField>& aResultIdData);

	TInt ReturnIdCountL(const TInt aQID);

	TInt UpdateQueryResultOnDemandInDBL(const CMsvSearchSortCacheEntry& aEntry,RArray<TMsvId>& aNewEntry,RArray<TMsvId>& aUpdateEntry, RArray<TMsvId>& aDeleteEntry);

	TInt OnDemandUpdateCacheEntryL(const TInt aIndex);

	TInt QueryID();

	void FirstResultForInteraratorNewQueryL(const CMsvSearchSortCacheEntry& aEntry);

	void FirstResultForInteraratorQueryIdL(const TInt index);

	void NextResultForInteraratorL(const TInt aIndex);

	TInt UnMarkedQuery(const TInt aindex);

	TInt GenerateQueryId(CMsvSearchSortCacheEntry& aEntry) ;

	TInt ReturnProgressInfo() const;

	TInt CancelSearchSortOperation() const;

	void RetrunQuery(TInt aIndex, CMsvSearchSortQuery* aCLientQuery);

	void ResetSearchSortCache();

	TSearchSortDbWrapper* GetDbWrapper();

private:

    static CMSvSearchSortCacheManager* CreateManagerL(CMsvServer& aServer); //Private CreateL

    void ConstructL(); //Private Constructor.

    CMSvSearchSortCacheManager(CMsvServer& aServer);// Default constructor.

    CMSvSearchSortCacheManager(const CMSvSearchSortCacheManager&) ; //restricted copy contructor.

	CMSvSearchSortCacheManager& operator=(const CMSvSearchSortCacheManager&); //Prevent Assignment operator.       

public:

	RArray<TMsvIdWithSortField> iMsvIdWithSortFieldArray; //Structure array sent by Client .

	RArray<TMsvId> iToFindResultAsIdArray; //ID's to be searched in Client side  for Header and body.

	RArray<TMsvId> iFinalResultAsIdArray; //Final result To send to Client.

	RArray<TMsvId> iUpdateIdsToCacheArray; //

	RArray<TMsvId> iDeltaCacheIdArray; //Delta Cache Array.. which contain the new, updated, deleted message id.

	TInt iFindResultCount;

	TInt iFinalResultCount;

	TBool iCancelFlag; //Syncronous cancel flag 

private:	

	static CMSvSearchSortCacheManager* iMsvSearchSortCacheManager;

	RPointerArray<CMsvSearchSortCacheEntry>* iManagerEntry;

	TInt iMsvMaximumSearchSortCacheSize; 

	TInt iMsvAvailableSearchSortCacheSize;

	TInt iIndexEntryCount;

	TInt iRequiredSize;

	TInt iTotalUsedCacheSize;

	TInt iSearchSortDeltaCacheSize;

	TInt iReturnResultType;

	TBool iExplicitSortOnDateTime;

	TInt iEntryIdCount;

	TInt iResultCount;

	TMsvId iIteratorId;

	TMsvEntry iIteratorEntry;

	TInt iMaxQueryId;

	TInt iIteratorRemainingResultCount;

	TInt iProgress;

	CMsvServer &iServer;

	CMsvSearchSortDeltaCache* iSearchSortDeltaCache;

	TSearchSortDbWrapper* iSearchDbAdapter;

    friend class CMsvIndexAdapter;

	friend class CMsvServer;

	friend class CMsvSearchSortCacheEntry;

	friend class CMsvServerSession;

#if(defined SYMBIAN_MESSAGESTORE_UNIT_TESTCODE)

	friend class CTestSearchSortCacheManager;

	friend class CTestSearchSortCacheEntry;

	friend class CTestSearchSortDBadapter;

	friend class CTestOOMSearchSortCacheManager;

#endif

    };

#endif /*MSVSEARCHSORTCACHEMANAGER_H_*/