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1 /* |
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2 * Copyright (c) 2005-2007 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 "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: Part of SyncML Data Synchronization Plug In Adapter |
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15 * |
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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 #ifndef __MMSDATASTORE_H__ |
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21 #define __MMSDATASTORE_H__ |
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22 |
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23 // INCLUDES |
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24 #include <SmlDataProvider.h> |
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25 #include "mmsdataproviderdefs.h" |
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26 #include "changefinder.h" |
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27 |
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28 |
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29 // FORWARD DECLARATIONS |
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30 class CMsvSession; |
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31 class CNSmlDataItemUidSet; |
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32 class CMmsCodecClient; |
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33 class CMmsAdapterMsvApi; |
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34 class CMsvOperationActiveSchedulerWait; |
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35 class TNSmlSnapshotItem; |
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36 class COMADSFolderObject; |
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37 |
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38 /** |
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39 * @brief This class is derived from ECom Data Store plugin-interface (CSmlDataStore). |
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40 * It performs the actual synchronization commands, which are received from |
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41 * the DS engine. |
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42 */ |
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43 class CMmsDataStore : public CSmlDataStore |
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44 { |
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45 public: |
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46 |
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47 /** |
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48 * Constructor |
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49 * |
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50 * @return CMmsDataStore*, a new CSmsDataStore instance. |
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51 */ |
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52 static CMmsDataStore* NewL(CMsvSession &aMsvSession); |
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53 |
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54 /** |
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55 * Destructor |
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56 */ |
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57 virtual ~CMmsDataStore(); |
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58 |
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59 protected: |
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60 |
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61 // Virtual functionality from CSmlDataStore, for comments see the CSmlDataStore header file |
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62 virtual void DoOpenL(const TDesC& aStoreName, MSmlSyncRelationship& aContext, TRequestStatus& aStatus); |
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63 virtual void DoCancelRequest(); |
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64 virtual const TDesC& DoStoreName() const; |
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65 virtual void DoBeginTransactionL(); |
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66 virtual void DoCommitTransactionL(TRequestStatus& aStatus); |
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67 virtual void DoRevertTransaction(TRequestStatus& aStatus); |
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68 virtual void DoBeginBatchL(); |
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69 virtual void DoCommitBatchL(RArray<TInt>& aResultArray, TRequestStatus& aStatus); |
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70 virtual void DoCancelBatch(); |
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71 virtual void DoSetRemoteStoreFormatL(const CSmlDataStoreFormat& aServerDataStoreFormat); |
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72 virtual void DoSetRemoteMaxObjectSize(TInt aServerMaxObjectSize); |
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73 virtual TInt DoMaxObjectSize() const; |
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74 virtual void DoOpenItemL(TSmlDbItemUid aUid, TBool& aFieldChange, TInt& aSize, |
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75 TSmlDbItemUid& aParent, TDes8& aMimeType, TDes8& aMimeVer, TRequestStatus& aStatus); |
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76 virtual void DoCreateItemL(TSmlDbItemUid& aUid, TInt aSize, TSmlDbItemUid aParent, |
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77 const TDesC8& aMimeType, const TDesC8& aMimeVer, TRequestStatus& aStatus); |
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78 virtual void DoReplaceItemL(TSmlDbItemUid aUid, TInt aSize, TSmlDbItemUid aParent, |
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79 TBool aFieldChange, TRequestStatus& aStatus); |
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80 virtual void DoReadItemL(TDes8& aBuffer); |
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81 virtual void DoWriteItemL(const TDesC8& aData); |
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82 virtual void DoCommitItemL(TRequestStatus& aStatus); |
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83 virtual void DoCloseItem(); |
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84 virtual void DoMoveItemL(TSmlDbItemUid aUid, TSmlDbItemUid aNewParent, TRequestStatus& aStatus); |
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85 virtual void DoDeleteItemL(TSmlDbItemUid aUid, TRequestStatus& aStatus); |
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86 virtual void DoSoftDeleteItemL(TSmlDbItemUid aUid, TRequestStatus& aStatus); |
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87 virtual void DoDeleteAllItemsL(TRequestStatus& aStatus); |
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88 virtual TBool DoHasSyncHistory() const; |
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89 virtual const MSmlDataItemUidSet& DoAddedItems() const; |
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90 virtual const MSmlDataItemUidSet& DoDeletedItems() const; |
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91 virtual const MSmlDataItemUidSet& DoSoftDeletedItems() const; |
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92 virtual const MSmlDataItemUidSet& DoModifiedItems() const; |
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93 virtual const MSmlDataItemUidSet& DoMovedItems() const; |
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94 virtual void DoResetChangeInfoL(TRequestStatus& aStatus); |
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95 virtual void DoCommitChangeInfoL(TRequestStatus& aStatus, const MSmlDataItemUidSet& aItems); |
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96 virtual void DoCommitChangeInfoL(TRequestStatus& aStatus); |
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97 |
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98 private: |
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99 |
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100 /** |
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101 * C++ Constructor. |
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102 */ |
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103 CMmsDataStore(); |
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104 |
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105 /** |
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106 * 2nd-phase Constructor. |
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107 * |
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108 * @param aMsvSession IN: a session handle to message store |
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109 */ |
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110 void ConstructL(CMsvSession &aMsvSession); |
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111 |
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112 /** |
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113 * Registers snapshot to ChangeFinder. |
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114 */ |
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115 void RegisterSnapshotL() const; |
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116 |
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117 /** |
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118 * Registers a single folder to snapshot, used by RegisterSnapshotL. |
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119 * |
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120 * @param aSnapshot IN: a snapshot item array. |
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121 * @param aId IN: folder id. |
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122 * @return TInt, Not used. |
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123 */ |
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124 TInt RegisterFolderL(CSnapshotArray* aSnapshot, const TMsvId& aId) const; |
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125 |
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126 /** |
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127 * Deletes all messages in a specified folder |
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128 * |
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129 * @param aId IN: a folder id, which is to be emptied |
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130 * @return TInt, not used. |
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131 */ |
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132 TInt DeleteAllMessagesInFolderL(TMsvId aId); |
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133 |
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134 /** |
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135 * Checks whether the specified MMS message exists in message store. |
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136 * |
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137 * @param aId IN: message ID |
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138 * @return TBool, ETrue if the item id exists in the message store. Otherwise EFalse. |
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139 */ |
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140 TBool MmsItemExists(TMsvId aUid); |
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141 |
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142 /** |
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143 * This function resolves the status bits from the message entry |
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144 * |
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145 * @param aUnread IN: the status bits are determined from this value |
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146 * @return TUint8, Status byte. |
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147 */ |
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148 TUint8 ResolveStatusBits(TBool aUnread); |
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149 |
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150 /** |
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151 * This function reads data of opened message from MMS engine to client buffer. |
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152 * Data is retriveved from MMS engine in chunks whose size can be less that |
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153 * client buffer size, for effectivity client buffer is allways filled with data. |
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154 * Recursive algorith is used for that. |
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155 * |
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156 * @param aBuffer OUT: client data buffer |
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157 * @return TInt, KErrNone or KErrOverflow if all MMS message data has been read. |
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158 */ |
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159 TInt ReadDataRecursively(TDes8& aBuffer); |
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160 |
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161 /** |
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162 * This function updates MMS message status |
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163 * |
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164 * @param aId IN: Identifies MMS message in message store |
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165 * @param aUnread IN: New status (unread/read) |
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166 */ |
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167 void UpdateMmsStatusL(TMsvId aId, TBool aUnread); |
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168 |
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169 /** |
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170 * Registers user folder messages to snapshot, used by RegisterSnapshotL. |
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171 * |
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172 * @param aSnapshot IN: a snapshot item array. |
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173 * @return TInt, Not used. |
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174 */ |
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175 TInt RegisterUserFoldersL(CSnapshotArray* aSnapshot) const; |
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176 |
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177 /** |
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178 * Cleans all user folders from SMS messages |
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179 * |
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180 * @return KErrNone in case of success |
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181 */ |
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182 TInt CleanUserFoldersL(); |
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183 |
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184 private: // Data members |
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185 |
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186 /** |
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187 * @brief Data Store states: |
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188 * EMmsClosed: Store is closed. |
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189 * EMmsOpenAndWaiting: Store is ready to be used. |
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190 * EMmsItemOpen: Item is being read. |
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191 * EMmsItemCreating: Item is being created. |
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192 * EMmsItemUpdating: Item is being updated. |
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193 */ |
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194 enum TState |
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195 { |
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196 EMmsClosed = 0, |
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197 EMmsOpenAndWaiting, |
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198 EMmsItemOpen, |
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199 EMmsItemOpenFieldUpdate, |
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200 EMmsItemCreating, |
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201 EMmsItemUpdating, |
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202 EFolderOpen, |
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203 EFolderCreating, |
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204 EFolderUpdating |
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205 }; |
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206 |
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207 /** |
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208 * A flag indicating the existence of synchronization history. |
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209 */ |
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210 TBool iHasHistory; |
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211 |
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212 /** |
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213 * Flag indicating, whether database is opened. |
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214 */ |
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215 TBool iDataBaseOpened; |
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216 |
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217 /** |
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218 * The state of the active object. |
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219 */ |
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220 TState iCurrentState; |
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221 |
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222 /** |
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223 * Access to streams, used by ChangeFinder. |
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224 */ |
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225 MSmlSyncRelationship* iContext; |
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226 |
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227 /** |
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228 * Key that is used in sorting snapshot. |
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229 */ |
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230 const TKeyArrayFix iKey; |
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231 |
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232 /** |
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233 * Change finder, used to determine db modifications. |
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234 */ |
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235 CChangeFinder* iChangeFinder; |
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236 |
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237 /** |
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238 * Used to access MMS message store |
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239 */ |
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240 CMmsCodecClient* iCodecClient; |
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241 |
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242 /** |
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243 * Used to access message folders |
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244 */ |
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245 CMmsAdapterMsvApi* iMsvApi; |
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246 |
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247 /** |
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248 * Waiter object for asynchronous operations |
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249 */ |
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250 CMsvOperationActiveSchedulerWait* iMsvWait; |
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251 |
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252 /** |
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253 * Message server session handle |
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254 */ |
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255 CMsvSession* iMsvSession; |
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256 |
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257 /** |
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258 * The location for temporary data |
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259 */ |
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260 CBufFlat* iDataBuffer; |
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261 |
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262 /** |
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263 * Counter of partial data reading |
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264 */ |
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265 TInt iReadCounter; |
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266 |
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267 /** |
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268 * To store information whether current MMS message is unread |
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269 */ |
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270 TBool iUnread; |
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271 |
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272 /** |
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273 * Data chunk used in partial data reading from MMS engine |
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274 */ |
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275 TPtrC8 iReadDataChunk; |
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276 |
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277 /** |
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278 * Current read position at the data chunk from MMS engine |
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279 */ |
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280 TInt iReadPosition; |
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281 |
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282 /** |
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283 * Indicates wheter this is the last data chunk from MMS engine |
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284 */ |
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285 TBool iLastDataChunk; |
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286 |
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287 /** |
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288 * Indicates whether all data related to current message has been read |
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289 */ |
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290 TBool iReadAllData; |
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291 |
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292 /** |
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293 * Counter of partial data writing |
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294 */ |
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295 TInt iWriteCounter; |
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296 |
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297 /** |
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298 * Indicates wheter this was only status update |
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299 */ |
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300 TInt iWrittenDataLength; |
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301 |
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302 /** |
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303 * Stores the currently active message id. |
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304 */ |
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305 TMsvId iCurrentId; |
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306 |
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307 /** |
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308 * Pointer to the variable, receiving the created Uid. |
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309 */ |
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310 TSmlDbItemUid* iCreatedUid; |
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311 |
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312 /** |
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313 * Stores the parent id of currently active message. |
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314 */ |
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315 TMsvId iParentId; |
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316 |
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317 /** |
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318 * Used to get asynchronous return values. |
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319 */ |
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320 TRequestStatus* iCallerStatus; |
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321 |
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322 /** |
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323 * Used to store new items. |
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324 */ |
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325 CNSmlDataItemUidSet* iNewItems; |
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326 |
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327 /** |
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328 * Used to store deleted items. |
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329 */ |
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330 CNSmlDataItemUidSet* iDeletedItems; |
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331 |
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332 /** |
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333 * Used to store updated items. |
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334 */ |
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335 CNSmlDataItemUidSet* iUpdatedItems; |
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336 |
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337 /** |
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338 * Used to store moved items. |
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339 */ |
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340 CNSmlDataItemUidSet* iMovedItems; |
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341 |
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342 /** |
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343 * Used to store soft-deleted items (not supported). |
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344 */ |
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345 CNSmlDataItemUidSet* iSoftDeletedItems; |
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346 |
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347 /** |
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348 * Used to parse OMA DS Folder Objects |
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349 */ |
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350 COMADSFolderObject* iFolderObjectParser; |
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351 |
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352 /** |
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353 * Reserved pointer for future extension. |
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354 */ |
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355 TAny* iReserved; |
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356 }; |
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357 |
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358 #endif // __MMSDATASTORE_H__ |
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359 |