--- /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<TMPXAttribute>& 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<TMPXAttribute>& 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