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1 /* |
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2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: This class is responsible for all category tables (Artist, |
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15 * Album, Genre, Composer, AbstractAlbum). |
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16 * |
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17 * |
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18 */ |
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19 |
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20 |
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21 #ifndef MPXDBABSTRACTALBUM_H |
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22 #define MPXDBABSTRACTALBUM_H |
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23 |
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24 // INCLUDES |
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25 #include <thumbnailmanager.h> |
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26 #include <thumbnailmanagerobserver.h> |
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27 #include "mpxdbcategory.h" |
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28 |
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29 |
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30 // CLASS FORWARDS |
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31 |
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32 // CLASS DECLARATION |
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33 |
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34 /** |
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35 * Responsible for managing all music databases |
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36 * |
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37 * @lib MPXDbPlugin.lib |
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38 */ |
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39 |
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40 class CMPXDbAbstractAlbum : |
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41 public CMPXDbCategory, |
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42 public MThumbnailManagerObserver |
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43 { |
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44 public: |
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45 |
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46 /** |
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47 * Two-phased constructor. |
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48 * @param aDbManager database manager to use for database interactions |
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49 * @param aCategory identifies the category |
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50 * @return New CMPXDbCategory instance. |
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51 */ |
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52 static CMPXDbAbstractAlbum* NewL(CMPXDbManager& aDbManager, |
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53 TMPXGeneralCategory aCategory); |
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54 |
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55 /** |
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56 * Two-phased constructor. |
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57 * @param aDbManager database manager to use for database interactions |
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58 * @param aCategory identifies the category |
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59 * @return New CMPXDbCategory instance on the cleanup stack. |
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60 */ |
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61 static CMPXDbAbstractAlbum* NewLC(CMPXDbManager& aDbManager, |
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62 TMPXGeneralCategory aCategory); |
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63 |
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64 /** |
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65 * Destructor |
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66 */ |
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67 virtual ~CMPXDbAbstractAlbum(); |
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68 |
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69 /** |
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70 * Find the drive Id for a abstractalbum |
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71 * @param aAbstractAlbumId identifies the abstractalbum |
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72 * @return corresponding drive id |
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73 */ |
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74 TInt GetDriveIdL(TUint32 aAbstractAlbumId); |
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75 |
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76 /** |
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77 * Add a category item. If the record already exists, its counter will |
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78 * be incremented. |
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79 * @param aName: This is the name to be entered into the row |
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80 * @param aDriveId: The Drive Id the name (category) belongs |
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81 * @param aNewRecord: indicates to the caller if a new record is created. |
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82 * ETrue if a new row is created in the table; otherwise EFalse. |
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83 * @param aCaseSensitive indicates whether case sensitivity should be taken |
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84 * into consideration when generating the unique row id |
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85 * @return The unique id of the row added. |
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86 */ |
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87 TUint32 AddItemL( const TDesC& aName, const TDesC& aAlbumArtist, const TDesC& aGenre, TInt aDriveId, TBool& aNewRecord, |
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88 TBool aCaseSensitive = ETrue); |
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89 |
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90 /** |
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91 * Decrement the number of songs for the item. If the count gets to 0, remove |
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92 * the item. |
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93 * @param aId: The ID of the category to delete. |
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94 * @param aDriveId: The drive Id the name (category) belongs to. Songs on different |
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95 * drives may belong to the same album or artist; consequently, one |
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96 * row for each artist/album id and drive ID pair will exist in the |
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97 * lookup table with a count existing for each row that tracks the |
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98 * number number of songs on that drive with that album/artist. |
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99 * @param aItemChangedMessages if valid on return contains a deleted message if the |
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100 * category was deleted |
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101 * @param aItemExist Out parameter, ETrue if the category is not deleted after the delete, |
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102 * EFalse otherwise |
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103 */ |
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104 void DecrementSongsForCategoryL(TUint32 aId, TInt aDriveId, |
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105 CMPXMessageArray* aItemChangedMessages, TBool& aItemExist, TBool aMtpInUse); |
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106 |
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107 /** |
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108 * Remove a abstractalbum and return its URI |
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109 * @param aAbstractAlbumId identifies the abstractalbum |
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110 * @return HBufC containing the URI. Ownership is transferred. |
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111 */ |
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112 HBufC* DeleteAbstractAlbumL(TUint32 aAbstractAlbumId, TInt aDriveId = 0); |
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113 |
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114 /** |
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115 * Update a category item. |
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116 * @param aId: The ID of the category to update |
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117 * @param aMedia: The media data |
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118 * @param aDriveId: The Drive Id the name (category) belongs |
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119 * @param aItemChangedMessages: if valid on return contains a updated message if the |
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120 * category was updated |
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121 */ |
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122 void UpdateItemL(TUint32 aId, const CMPXMedia& aMedia, TInt aDriveId, CMPXMessageArray* aItemChangedMessages); |
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123 |
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124 private: |
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125 |
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126 |
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127 /** |
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128 * Updates the media with information from the table |
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129 * @param aRecord record containing the source fields |
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130 * @param aAttrs attributes to be returned |
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131 * @param aMedia returns the requested attributes |
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132 */ |
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133 void UpdateMediaL(RSqlStatement& aRecord, const TArray<TMPXAttribute>& aAttrs, |
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134 CMPXMedia& aMedia); |
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135 |
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136 /** |
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137 * Generate searching criteria for album table from the given criteria |
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138 * @param aMedia media data |
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139 * @param aFields fields of Album table |
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140 * @param aValues values of each field of Album table |
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141 * @return a string containing the selection criteria. The ownership is passed to the caller. |
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142 */ |
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143 void GenerateAbstractAlbumFieldsValuesL(const CMPXMedia& aMedia, |
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144 CDesCArray& aFields, CDesCArray& aValues); |
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145 |
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146 |
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147 /** |
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148 * @see MMPXTable |
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149 */ |
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150 virtual void CreateTableL(RSqlDatabase& aDatabase, TBool aCorruptTable); |
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151 |
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152 |
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153 |
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154 /** |
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155 * @see MMPXTable |
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156 */ |
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157 virtual TBool CheckTableL(RSqlDatabase& aDatabase); |
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158 |
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159 |
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160 |
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161 /** |
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162 * C++ constructor. |
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163 * @param aDbManager database manager to use for database interactions |
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164 * @param aCategory identifies the category |
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165 */ |
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166 CMPXDbAbstractAlbum(CMPXDbManager& aDbManager, TMPXGeneralCategory aCategory); |
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167 |
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168 /** |
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169 * Second phase constructor. |
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170 */ |
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171 void ConstructL(); |
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172 |
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173 |
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174 /** |
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175 * MThumbnailManagerObserver |
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176 */ |
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177 void ThumbnailPreviewReady( |
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178 MThumbnailData& aThumbnail, TThumbnailRequestId aId ); |
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179 /** |
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180 * MThumbnailManagerObserver |
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181 */ |
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182 void ThumbnailReady( |
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183 TInt aError, |
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184 MThumbnailData& aThumbnail, TThumbnailRequestId aId ); |
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185 |
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186 public: |
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187 |
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188 /** |
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189 * Column indexes in the category tables |
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190 */ |
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191 enum TAbstractAlbumColumns |
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192 { |
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193 EAbstractAlbumUniqueId = KMPXTableDefaultIndex, |
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194 EAbstractAlbumName, |
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195 EAbstractAlbumArtist, |
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196 EAbstractAlbumGenre, |
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197 EAbstractAlbumSongCount, |
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198 EAbstractAlbumVolumeId, |
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199 EAbstractAlbumFieldCount |
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200 }; |
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201 |
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202 private: // Data |
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203 CThumbnailManager* iTNManager; |
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204 |
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205 }; |
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206 #endif // MPXDBAbstractAlbum_H |
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207 |
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208 // End of File |