diff -r 000000000000 -r ff3acec5bc43 mpxplugins/serviceplugins/collectionplugins/mpxsqlitedbhgplugin/inc/mpxdbalbum.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mpxplugins/serviceplugins/collectionplugins/mpxsqlitedbhgplugin/inc/mpxdbalbum.h Thu Dec 17 08:45:05 2009 +0200 @@ -0,0 +1,207 @@ +/* +* Copyright (c) 2007 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: This class is responsible for all category tables (Artist, +* Album, Genre, Composer). +* +* +*/ + + +#ifndef MPXDBALBUM_H +#define MPXDBALBUM_H + +// INCLUDES +#include "mpxdbcategory.h" + +// CLASS DECLARATION + +class MMPXDbAlbumObserver + { + public: + virtual TInt HandleIsUnknownArtistL(TUint32 aId) = 0; + virtual TUint32 HandleArtistForAlbumL( const TUint32 aId ) = 0; + }; +/** +* Responsible for managing all music databases +* +* @lib MPXDbPlugin.lib +*/ + +class CMPXDbAlbum : + public CMPXDbCategory + { + public: + + /** + * Two-phased constructor. + * @param aDbManager database manager to use for database interactions + * @param aCategory identifies the category + * @return New CMPXDbCategory instance. + */ + static CMPXDbAlbum* NewL(CMPXDbManager& aDbManager, + TMPXGeneralCategory aCategory, MMPXDbAlbumObserver& aObserver); + + /** + * Two-phased constructor. + * @param aDbManager database manager to use for database interactions + * @param aCategory identifies the category + * @return New CMPXDbCategory instance on the cleanup stack. + */ + static CMPXDbAlbum* NewLC(CMPXDbManager& aDbManager, + TMPXGeneralCategory aCategory, MMPXDbAlbumObserver& aObserver); + + /** + * Destructor + */ + virtual ~CMPXDbAlbum(); + + public: + + /** + * Add a category item. If the record already exists, its counter will + * be incremented. + * @param aName: This is the name to be entered into the row + * @param aDriveId: The Drive Id the name (category) belongs + * @param aNewRecord: indicates to the caller if a new record is created. + * ETrue if a new row is created in the table; otherwise EFalse. + * @param aCaseSensitive indicates whether case sensitivity should be taken + * into consideration when generating the unique row id + * @return The unique id of the row added. + */ + TUint32 AddItemL(const TDesC& aName, TUint32 aArtist, const TDesC& aArt, TInt aDriveId, TBool& aNewRecord, + TBool aCaseSensitive = ETrue); + + /** + * Decrement the number of songs for the item. If the count gets to 0, remove + * the item. + * @param aId: The ID of the category to delete. + * @param aDriveId: The drive Id the name (category) belongs to. Songs on different + * drives may belong to the same album or artist; consequently, one + * row for each artist/album id and drive ID pair will exist in the + * lookup table with a count existing for each row that tracks the + * number number of songs on that drive with that album/artist. + * @param aItemChangedMessages if valid on return contains a deleted message if the + * category was deleted + * @param aItemExist Out parameter, ETrue if the category is not deleted after the delete, + * EFalse otherwise + * @param aArtist: The ID of the artist + */ + void DecrementSongsForCategoryL(TUint32 aId, TInt aDriveId, + CMPXMessageArray* aItemChangedMessages, TBool& aItemExist, const TUint32 aArtist); + + /** + * Gets the details for all category items. + * @param aAttrs attributes to be returned + * @param aMediaArray returns the requested attributes for all items + */ + void GetAllCategoryItemsL(const TArray& aAttrs, + CMPXMediaArray& aMediaArray); + + /** + * Update a category item. + * @param aId: The ID of the category to update + * @param aMedia: The media data + * @param aDriveId: The Drive Id the name (category) belongs + * @param aItemChangedMessages: if valid on return contains a updated message if the + * category was updated + */ + void UpdateItemL(TUint32 aId, const CMPXMedia& aMedia, TInt aDriveId, CMPXMessageArray* aItemChangedMessages); + + public: + /** + * Get albums count for a specified artist + * @param aId: The ID of the artist + */ + TInt GetAlbumsCountForArtistL(TUint32 aArtistId); + + /** + * Get songs count for a specified album and a specified artist + * @param aArtistId: The ID of the artist + * @param aAlbumId: The ID of the album + */ + TInt GetSongsCountInAlbumMatchingArtistL(TUint32 aArtistId, TUint32 aAlbumId); + + private: + /** + * Updates the media with information from the table + * @param aRecord record containing the source fields + * @param aAttrs attributes to be returned + * @param aMedia returns the requested attributes + */ + void UpdateMediaL(RSqlStatement& aRecord, const TArray& aAttrs, + CMPXMedia& aMedia); + + /** + * Generate searching criteria for album table from the given criteria + * @param aMedia media data + * @param aFields fields of Album table + * @param aValues values of each field of Album table + * @return a string containing the selection criteria. The ownership is passed to the caller. + */ + void GenerateAlbumFieldsValuesL(const CMPXMedia& aMedia, + CDesCArray& aFields, CDesCArray& aValues); + + + TBool IsUnknownArtistL(TUint32 aId); + + TUint32 ArtistForAlbumL(const TUint32 aId); + + private: // from MMPXTable + + /** + * @see MMPXTable + */ + virtual void CreateTableL(RSqlDatabase& aDatabase, TBool aCorruptTable); + + /** + * @see MMPXTable + */ + virtual TBool CheckTableL(RSqlDatabase& aDatabase); + + private: + + /** + * C++ constructor. + * @param aDbManager database manager to use for database interactions + * @param aCategory identifies the category + */ + CMPXDbAlbum(CMPXDbManager& aDbManager, TMPXGeneralCategory aCategory, MMPXDbAlbumObserver& aObserver); + + /** + * Second phase constructor. + */ + void ConstructL(); + + public: + + /** + * Column indexes in the category tables + */ + enum TAlbumColumns + { + EAlbumUniqueId = KMPXTableDefaultIndex, + EAlbumName, + EAlbumSongCount, + EAlbumArtist, + EAlbumArt, + EAlbumArtistName, + EAlbumFieldCount + }; + + private: // Data + MMPXDbAlbumObserver& iObserver; + }; +#endif // MPXDBALBUM_H + +// End of File