/*

* Copyright (c) 2008 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:   CCPLiwMap - class used in Content Publisher

 *

*/

#ifndef C_CPLIWIDSMAP_H

#define C_CPLIWIDSMAP_H

#include <liwvariant.h>

#include <sqldb.h>

#include "cpglobals.h"

class RDesReadStream;

class CCPSecurityPolicy;

// CLASS DECLARATION

/**

 *  Base Map class for Publisher Registry and Content

 *

 *  @lib cputils.dll

 *  @since S60 v5.0

 */

class CCPLiwMap : public CLiwMap

    {

protected:

    /**

     * Enum defining the properties of filter.

     */

    enum TCPProperties

        {

        EPublisher = 1,

        EContentType = 2,

        EContentId = 4,

        EFlag = 8,

        };

    /**

     * Enum defining the sort ordering.

     */    

	enum TCPSortOrder

        {

        ECPRecent = 1, // 0001

        ECPPublisher  = 2, // 0010

        ECPContent = 4, // 0100 

        ECPContentId = 8 // 1000 

        };   

public:

    friend class CCpStorageEngine;

    /**

     * Two-phased constructor.

     */    

    IMPORT_C static CCPLiwMap* NewL( RDesReadStream& aStream );

    /**

     * Two-phased constructor.

     */    

    IMPORT_C static CCPLiwMap* NewL( const CLiwGenericParamList& aList );

    /**

     * Used by client to serialize this object 

     *

     * @return object serialized to binary

     */

    IMPORT_C HBufC8* PackForServerLC() const;

    /**

     * Reset map

     */

    IMPORT_C void Reset( ) const;

    /**

     * Leaves when Add data operation is not possible due

     * to missing of some parameter

     */

    virtual void IsValidForAddL( ) const;

    /**

     * Leaves when Execute Action operation is not possible due

     * to missing of some parameter

     */

    IMPORT_C void IsValidForActionL( ) const;

    /**

     * Leaves when RequestNotification operation is not possible due

     * to missing of some parameter

     */

    IMPORT_C void IsValidForNotificationL( ) const;

    /**

     * Fetches value for property(key) from internal map

     *

     * @param aProperty name of the property ( key ) 

     * @param aResult target descriptor for fetching operation

     * @return ETrue is property found or EFalse if not

     */

    IMPORT_C TBool GetPropertyL( const TDesC8& aProperty,

             RBuf& aResult ) const;

    /**

     * Fetches value for property(key) from internal map

     *

     * @param aProperty name of the property ( key ) 

     * @param aResult target binary for fetching operation

     * @return ETrue is property found or EFalse if not

     */

    IMPORT_C TBool GetPropertyL( const TDesC8& aProperty,

            RBuf8& aResult ) const;

    /**

     * Fetches value for property(key) from internal map

     *

     * @param aProperty name of the property ( key ) 

     * @param aResult target integer for fetching operation

     * @return ETrue is property found or EFalse if not

     */

    IMPORT_C TBool GetProperty( const TDesC8& aProperty,

    		TInt32& aResult ) const;

    /**

     * Setter for security policy 

     *

     * @param aPolicy security policy

     */

    IMPORT_C void SetSecurityL( const RMessage2& aMessage );

    /**

     * Destructor.

     */

    virtual ~CCPLiwMap();

    /**

     * Check if IDs are valid for Delete operation

     */

    virtual void IsValidForDeleteL() const =0;

    /**

     * Check if IDs are valid for GetList operation

     */

    virtual void IsValidForGetListL() const =0;    

	/**

     *

     * @return ETrue if supported, EFalse if not

     */

	virtual TBool ActivateActionSupport( ) const = 0;

	/**

     *

     * @return ETrue if activate flag is set, EFalse if not

     */

	virtual TBool GetActivateInfo( ) const = 0;

public:

    // from base class CLiwMap

    /**

     * Inserts a key-value pair element to the map collection. If

     * the specified key already exists, it will be removed from

     * the collection and the new key-value pair will be added to the

     * map.

     *  

     * @param aKey the key to be stored

     * @param aValue the value associated with the key to be stored

     */

    void InsertL( const TDesC8& aKey, const TLiwVariant& aValue );

    /**

     * Finds a value stored in the map collection based on the key.

     *  

     * @param aKey the key to be searched

     * @param aFndValue the value associated with the found key

     * @return false if there is no key stored; true otherwise

     */

    TBool FindL( const TDesC8& aKey, TLiwVariant& aValue ) const;

    /**

     * Returns the number of key-value pair stored in the map collection.

     *  

     * @return the number of key-value pair stored in the map collection

     */

    TInt Count() const;

    /**

     * Returns the key stored at a specified index. 

     *  

     * @param aIndex the index of the key to be found

     * @param aFndKey the key found at the passed index

     *

     * @return true if a key-value entry is found at the passed index;

     * false otherwise

     */

    TBool AtL( TInt aIndex, TDes8& aFndKey ) const;

    /**

     * Removes a key from the map collection.

     *  

     * @param aKey the key to be removed from the map

     */

    void Remove( const TDesC8& aKey );

    /**

     * Returns the size of the collection. The size is 

     * calculated based on the total numer of key-value elements

     * and the size of each pair in the collection

     *  

     * @return the size of the collection

     */

    TInt Size() const;

    /**

     * The container managed data values can be serialized to an output

     * stream. 

     * 

     * @param aOutputStream the output stream to which the data will be streamed

     */

    void ExternalizeL( RWriteStream& aOutputStream ) const;

protected:

    /**

     * Adds to database current content

     *  

     * @param aSqlDb handle to database

     * @param aNotificationList list of notifications to fill in when 

     *        something was actually changed in dataabse

     *

     * @return id of added entry

     */

    virtual TInt32 AddL( RSqlDatabase aSqlDb,

        CLiwDefaultList* aNotificationList = 0 ) const= 0;

    /**

     * Fetches entries from database

     *  

     * @param aSqlDb handle to database

     * @param aList target list for enntries

     * @param aItemsToDelete ids of entries for removal - 

     *        they were found to be expired

     *

     * @return number of fetched entries

     */

    virtual TUint GetListL( RSqlDatabase aSqlDb, CLiwGenericParamList* aList,

        RArray<TInt32>& aItemsToDelete ) const = 0;

    /**

     * Removes entries from database

     *  

     * @param aSqlDb handle to database

     * @param aNotificationList list of notifications to fill in when 

     *        something was actually changed in dataabse

     */

    virtual void RemoveL( RSqlDatabase aSqlDb,

        CLiwDefaultList* aNotificationList = 0 ) const = 0;

    /**

     * Saves results from query to SQLite Server

     *  

     * @param aStmt handle to SQL statement

     * @param aList target list for enntries

     * @param aItemsToDelete ids of entries for removal - 

     *        they were found to be expired

     */

    virtual void SaveQueryResultsL( RSqlStatement& aStmt,

        CLiwGenericParamList& aList, RArray<TInt32>& aItemsToDelete ) const = 0;

    /**

     * Updates entry in database

     *  

     * @param aSqlDb handle to database

     * @param aNotificationList list of notifications to fill in when 

     *        something was actually changed in dataabse

     */

    virtual void UpdateL( RSqlDatabase aSqlDb, TInt32 aId,

        CLiwDefaultList* aNotificationList = 0 ) const = 0;

    /**

     * Performs actuall add operation

     *  

     * @param aSqlDb handle to database

     * @param aNotificationList list of notifications to fill in when 

     *        something was actually changed in dataabse

     *

     * @return id of added entry

     */

    virtual TInt32 AddToDbL( RSqlDatabase aSqlDb,

        CLiwDefaultList* aNotificationList = 0 ) const = 0;

    /**

     * Checks if operation value is proper

     *  

     * @param aValue contains operation value

     */    

    void IsProperOperationL( const TLiwVariant& aValue ) const;

    /**

     * Appends GetList filter as strings to SQL query according to aFilter

     *  

     * @param aQuery SQL query

     * @param aFilter as enum

     *

     */

    void AppendGetListFilterL( RBuf& aQuery, TUint& aFilter ) const;

    /**

     * Appends Remove filter as strings to SQL query according to aFilter

     *  

     * @param aQuery SQL query

     * @param aFilter as enum

     *

     */

    void AppendRemoveFilterL( RBuf& aQuery, TUint& aFilter ) const;

    /**

     * Appends filter as strings to SQL query according to aFilter

     *  

     * @param aQuery SQL query

     * @param aFilter as enum

     *

     */

    virtual void AppendFilterL( RBuf& aQuery, TUint& aFilter ) const;

    /**

     * Prepares SQL query for Add operation

     *

     * @param aSqlDb handle to database  

     * @param aStmt handle to SQL statement

     * @param aQuery SQL query

     *

     */

    virtual void PrepareStmtforAddL( RSqlDatabase aSqlDb,

        RSqlStatement& aStmt, const TDesC& aQuery ) const;

    /**

     * Appends sorting criteria as strings to SQL query according to aSort

     *

     * @param aQuery SQL query

     * @param aSort sort filter as TInt

     *

     */

    virtual void AppendSortL( RBuf& aQuery, 

        const TCPSortOrder& aSort ) const = 0;

    /**

      * Fills change info map with proper values

      *aStmt

      * @param aStmt handle to SQL statement

      * @param aChangeInfoMap map that will be filed

      *

      */

    virtual void FillChangeInfoMapL( RSqlStatement& aStmt, 

			CLiwDefaultMap* aMap ) const;

protected:

    /**

     * Sets all parameters according to provided list

     * @param aItemMap map with parameters

     */

    void SetL( const CLiwGenericParamList& aInParamList );

    /**

     * Check Get properties

     *

     * @return logical sum of TCPProperties of the object

     */

    TUint GetFilterL() const;

    /**

     * Check and return sort order

     *

     * @return Sort Criteria

     */

    TCPSortOrder GetSortL() const;

    /**

     * Check if Publisher name is set

     *

     * @return ETrue if Publisher name was set, EFalse if not

     */

    TBool IsPublisherNameL() const;

    /**

     * Check if ContentType is set

     *

     * @return ETrue if ContentType was set, EFalse if not

     */

    TBool IsContentTypeL() const;

    /**

     * Check if ContentId is set

     *

     * @return ETrue if ContentId was set, EFalse if not

     */

    TBool IsContentIdL() const;

    /**

     * Check if ActionTrigger is set

     *

     * @return ETrue if ActionTrigger was set, EFalse if not

     */

    TBool IsTriggerL( ) const;

    /**

     * Check if Flag is present

     *

     * @return ETrue if ContentId was set, EFalse if not

     */

    TBool IsFlag( ) const;

    /**

     * Checks if Id property is present in internal map

     *

     */

    TBool IsId() const;

    /**

     * Checks if property(key) is present in internal map 

     *

     */

    TBool PropertyExists( const TDesC8& aProperty ) const;

    /**

     * Fetches entries from database

     *  

     * @param aSqlDb handle to database

     * @param aQuery aQuery SQL query

     * @param aList target list for enntries

     * @param aItemsToDelete ids of entries for removal - 

     *        they were found to be expired

     *

     * @return number of fetched entries

     */

    TUint GetListL( RSqlDatabase aSqlDb, const TDesC& aQuery,

        CLiwGenericParamList* aList, RArray<TInt32>& aItemsToDelete ) const;

    /**

     * Removes entries from database

     *  

     * @param aSqlDb handle to database

     * @param aQuery SQL query

     * 

     */

    void RemoveL( RSqlDatabase aSqlDb, const TDesC& aQuery ) const;

    /**

     * Fetches Ids (Publisher, ContentType, ContentId) from database

     * 

     * @param aId id entry in database

     * @param aQuery SQL query

     * @param aMap map to insert Ids

     * @param aSqlDb handle to database  

     * 

     */

    void FetchIdsL( TInt32 aId, const TDesC& aQuery, CLiwDefaultMap* aMap,

        RSqlDatabase aSqlDb ) const;

    /**

     * Fetches Id from database

     * 

     * @param aSqlDb handle to database

     * @param aQuery SQL query

     * @param aId id entry from database

     * 

     */

    void FetchIdL( RSqlDatabase aSqlDb,

        const TDesC& aQuery, TInt32& aId ) const;

    /**

     * Gets Ids (Id, Publisher, ContentType, ContentId) 

     *      of removed entries from database

     *  

     * @param aSqlDb handle to database

     * @param aQuery SQL query

     * @param aList List with ids

     * 

     */

    void GetIdsOfRemovedEntriesL( RSqlDatabase aSqlDb, const TDesC& aQuery,

        CLiwDefaultList* aList ) const;

    /**

     * Saves Ids (Id, Publisher, ContentType, ContentId) from database

     * 

     * @param aSqlDb handle to database

     * @param aList List with ids

     * 

     */

    void SaveQueryResultsIdsL( RSqlStatement& aStmt,

        CLiwDefaultList* aList ) const;    

    /**

     * Contructs SQL query to select entry

     * @param aQuery SQL query

     * 

     */

    void ConstructSelectIdL( RBuf& aQuery ) const;

    /**

     * Contructs SQL query to select entries for GetList

     * @param aQuery SQL query

     * 

     */

    void ConstructGetListSelectL( RBuf& aQuery, TBool aGet = ETrue ) const;

    /**

     * Contructs SQL query to select entries for Remove

     * @param aQuery SQL query