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1 /* |
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2 * Copyright (c) 2005 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: A task to import Feeds. |
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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 #include <S32Mem.h> |
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20 |
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21 #include "ImportFeedsTask.h" |
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22 #include "FeedsDatabase.h" |
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23 #include "FeedsServer.h" |
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24 #include "FeedsServerMsg.h" |
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25 |
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26 // Root folder related. |
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27 const TInt KRootFolderId = 0; |
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28 |
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29 // ----------------------------------------------------------------------------- |
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30 // CImportFeedsTask::NewL |
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31 // |
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32 // Two-phased constructor. |
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33 // ----------------------------------------------------------------------------- |
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34 // |
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35 CImportFeedsTask* CImportFeedsTask::NewL(CFeedsServer& aFeedsServer, |
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36 MImportFeedsTaskObserver& aObserver, const RMessage2& aMessage) |
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37 { |
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38 CImportFeedsTask* self = new (ELeave) CImportFeedsTask(aFeedsServer, aObserver, aMessage); |
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39 |
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40 CleanupStack::PushL(self); |
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41 self->ConstructL(); |
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42 CleanupStack::Pop(); |
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43 |
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44 return self; |
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45 } |
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46 |
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47 // ----------------------------------------------------------------------------- |
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48 // CImportFeedsTask::CImportFeedsTask |
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49 // C++ default constructor can NOT contain any code, that |
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50 // might leave. |
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51 // ----------------------------------------------------------------------------- |
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52 // |
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53 CImportFeedsTask::CImportFeedsTask(CFeedsServer& aFeedsServer, MImportFeedsTaskObserver& aObserver, const RMessage2& aMessage): |
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54 CTask(aFeedsServer), iObserver(aObserver), iMessage(aMessage) |
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55 { |
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56 |
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57 } |
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58 |
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59 |
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60 // ----------------------------------------------------------------------------- |
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61 // CImportFeedsTask::ConstructL |
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62 // Symbian 2nd phase constructor can leave. |
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63 // ----------------------------------------------------------------------------- |
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64 // |
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65 void CImportFeedsTask::ConstructL() |
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66 { |
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67 BaseConstructL(ETrue); |
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68 |
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69 iIdle = CIdle::NewL(CActive::EPriorityStandard); |
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70 iPackedFolder = NULL; |
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71 iMoreToAdd = ETrue; |
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72 iFeedsDatabase = &(iFeedsServer.Database()); |
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73 } |
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74 |
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75 // ----------------------------------------------------------------------------- |
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76 // CImportFeedsTask::CImportFeedsTask |
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77 // Deconstructor. |
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78 // ----------------------------------------------------------------------------- |
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79 // |
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80 CImportFeedsTask::~CImportFeedsTask() |
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81 { |
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82 TRAP_IGNORE( CleanupImportTaskL() ); |
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83 |
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84 iImportFile.Close(); |
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85 iRFs.Close(); |
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86 |
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87 delete iFullImportFileName; |
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88 delete iPackedFolder; |
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89 delete iIdle; |
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90 } |
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91 |
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92 // ----------------------------------------------------------------------------- |
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93 // CImportFeedsTask::StartTaskL. |
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94 // |
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95 // Starts the task. |
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96 // ----------------------------------------------------------------------------- |
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97 // |
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98 void CImportFeedsTask::StartTaskL() |
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99 { |
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100 iImportState = EImportOpenOPMLFile; |
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101 iDBTransactInited = EFalse; |
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102 iFoundRootFolder = EFalse; |
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103 |
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104 iParentStack.AppendL(KRootFolderId); |
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105 iSiblingIndexStack.AppendL(0); |
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106 |
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107 iIdle->Start(TCallBack(StartImportStateMachine, this)); |
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108 } |
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109 |
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110 |
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111 // ----------------------------------------------------------------------------- |
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112 // CImportFeedsTask::StartImportStateMachine. |
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113 // |
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114 // Starts the OPML import task |
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115 // ----------------------------------------------------------------------------- |
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116 // |
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117 TBool CImportFeedsTask::StartImportStateMachine(TAny *aPtr) |
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118 { |
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119 TInt err(KErrNone); |
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120 |
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121 CImportFeedsTask *self = static_cast<CImportFeedsTask *>(aPtr); |
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122 |
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123 switch(self->iImportState) |
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124 { |
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125 case EImportOpenOPMLFile : |
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126 TRAP(err, self->OpenOPMLFileL()); |
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127 if(err != KErrNone) |
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128 { |
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129 self->iObserver.ImportCompleted(err); |
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130 return EFalse; |
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131 } |
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132 self->iImportState = EImportPreparePackedFolder; |
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133 return ETrue; |
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134 |
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135 case EImportPreparePackedFolder: |
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136 TRAP(err, self->PreparePackedFolderL()); |
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137 if(err != KErrNone) |
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138 { |
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139 self->iObserver.ImportCompleted(err); |
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140 return EFalse; |
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141 } |
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142 self->iImportState = EImportIntoDB; |
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143 return ETrue; |
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144 |
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145 case EImportIntoDB: |
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146 |
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147 TRAP(err, self->ImportIntoDBL()); |
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148 if(err != KErrNone) |
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149 { |
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150 self->iObserver.ImportCompleted(err); |
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151 return EFalse; |
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152 } |
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153 if(self->iMoreToAdd) |
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154 { |
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155 return ETrue; |
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156 } |
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157 self->iImportState = EImportDone; |
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158 self->iObserver.ImportCompleted(KErrNone); |
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159 return EFalse; |
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160 } |
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161 return EFalse; |
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162 } |
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163 |
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164 // ----------------------------------------------------------------------------- |
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165 // CImportFeedsTask::CleanupImportTask. |
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166 // |
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167 // Cancel the ongoing OPML import task |
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168 // ----------------------------------------------------------------------------- |
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169 // |
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170 void CImportFeedsTask::CleanupImportTaskL() |
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171 { |
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172 if(iImportState == EImportIntoDB && iMoreToAdd) |
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173 { |
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174 iFeedsDatabase->CommitImportTransaction(); |
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175 |
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176 // Rollback didnt work with tables having index, so deleting all the added records :( |
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177 iFeedsDatabase->DeleteFeedTableRecordsL(iFeedIds); |
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178 iFeedsDatabase->DeleteFolderListTableRecordsL(iFolderItemIds); |
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179 |
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180 if(iDBTransactInited) |
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181 ReleaseImportTables(); |
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182 } |
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183 } |
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184 |
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185 // ----------------------------------------------------------------------------- |
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186 // CImportFeedsTask::ExtractClientImportMessageL. |
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187 // |
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188 // Extract the client passes message |
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189 // ----------------------------------------------------------------------------- |
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190 // |
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191 void CImportFeedsTask::OpenOPMLFileL() |
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192 { |
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193 User::LeaveIfError(iRFs.Connect()); |
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194 User::LeaveIfError(iImportFile.Open(iRFs, *iFullImportFileName, EFileRead | EFileShareReadersOnly)); |
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195 } |
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196 |
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197 // ----------------------------------------------------------------------------- |
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198 // CImportFeedsTask::PreparePackedFolderL. |
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199 // |
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200 // Creates the packed folder by parsing the OPML file |
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201 // ----------------------------------------------------------------------------- |
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202 // |
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203 void CImportFeedsTask::PreparePackedFolderL() |
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204 { |
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205 iPackedFolder = iFeedsServer.ImportFolderL(iImportFile, iDispImportFileName); |
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206 } |
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207 |
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208 // ----------------------------------------------------------------------------- |
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209 // CImportFeedsTask::ReleaseImportTablesCallback. |
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210 // |
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211 // Callback function for import task completion |
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212 // ----------------------------------------------------------------------------- |
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213 // |
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214 void CImportFeedsTask::ReleaseImportTablesCallback(TAny *ptr) |
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215 { |
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216 CImportFeedsTask *self = static_cast<CImportFeedsTask *>(ptr); |
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217 self->iFeedsDatabase->CommitImportTransaction(); |
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218 |
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219 self->ReleaseImportTables(); |
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220 } |
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221 |
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222 // ----------------------------------------------------------------------------- |
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223 // CImportFeedsTask::ReleaseImportTables. |
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224 // |
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225 // Closes all the OPML import related tables |
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226 // ----------------------------------------------------------------------------- |
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227 // |
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228 void CImportFeedsTask::ReleaseImportTables() |
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229 { |
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230 iFeedsDatabase->ReleaseImportTables(); |
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231 } |
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232 |
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233 // ----------------------------------------------------------------------------- |
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234 // CImportFeedsTask::ImportIntoDBL. |
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235 // |
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236 // Starts importing the packed folder into DB |
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237 // ----------------------------------------------------------------------------- |
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238 // |
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239 void CImportFeedsTask::ImportIntoDBL() |
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240 { |
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241 |
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242 CleanupStack::PushL(TCleanupItem(&ReleaseImportTablesCallback, this)); |
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243 |
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244 if(!iDBTransactInited) |
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245 { |
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246 iFeedsDatabase->PrepareImportTransationsL(); // Open tables, mark start of transactions |
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247 iDBTransactInited = ETrue; |
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248 } |
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249 |
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250 ImportFoldersL(); // Import record by record |
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251 |
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252 if(!iMoreToAdd) |
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253 { |
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254 CleanupStack::PopAndDestroy(/*ReleaseImportTablesCallback*/); |
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255 } |
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256 else |
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257 CleanupStack::Pop(/*ReleaseImportTablesCallback*/); |
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258 } |
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259 |
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260 // ----------------------------------------------------------------------------- |
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261 // CImportFeedsTask::ImportFoldersL. |
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262 // |
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263 // Imports the packed folder into DB |
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264 // ----------------------------------------------------------------------------- |
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265 // |
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266 void CImportFeedsTask::ImportFoldersL() |
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267 { |
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268 TInt parent; |
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269 TInt siblingIndex; |
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270 TInt folderId; |
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271 TPtrC title; |
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272 TPtrC url; |
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273 TInt entryId; |
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274 TInt feedId; |
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275 TInt newfeedId; |
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276 TTime timestamp; |
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277 TInt unreadCount; |
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278 TInt statusCode; |
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279 TInt freq; |
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280 if(!iPackedFolder->HasNextToken()) |
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281 { |
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282 iMoreToAdd = EFalse; |
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283 return; |
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284 } |
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285 |
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286 iMoreToAdd = ETrue; |
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287 |
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288 TUint token = iPackedFolder->NextToken(); |
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289 |
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290 switch (token) |
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291 { |
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292 case EFolderTokenFolderBegin: |
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293 // Extract the attributes. |
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294 iPackedFolder->ExtractAttributes(title, url, entryId, feedId, timestamp, unreadCount, statusCode, freq); |
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295 |
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296 // The first folder in the PackedFolder is the root-folder. There is no |
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297 // reason to store this folder in the database, as such this folder is skipped. |
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298 if (!iFoundRootFolder) |
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299 { |
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300 iFoundRootFolder = ETrue; |
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301 return; |
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302 } |
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303 |
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304 // Determine the parent and its sibling index. |
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305 parent = iParentStack[iParentStack.Count() - 1]; |
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306 siblingIndex = iSiblingIndexStack[iSiblingIndexStack.Count() - 1]; |
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307 iSiblingIndexStack[iSiblingIndexStack.Count() - 1]++; |
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308 |
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309 //create a sibling index hole |
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310 iFeedsDatabase->CreateSiblingIndexHoleL(parent, siblingIndex, 1); |
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311 |
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312 // Add the folder. |
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313 iFeedsDatabase->FolderItemAddHelperL(iFolderListId, title, KNullDesC, |
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314 ETrue, siblingIndex, parent, folderId, newfeedId, freq); |
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315 |
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316 // Push this folder on the stack as the active parent. |
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317 iParentStack.AppendL(folderId); |
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318 iSiblingIndexStack.AppendL(0); |
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319 |
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320 iFolderItemIds.AppendL(folderId); |
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321 break; |
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322 |
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323 case EFolderTokenFolderEnd: |
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324 // Pop this folder off of the stacks. |
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325 iParentStack.Remove(iParentStack.Count() - 1); |
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326 iSiblingIndexStack.Remove(iSiblingIndexStack.Count() - 1); |
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327 break; |
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328 |
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329 case EFolderTokenFeed: |
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330 // Extract the attributes. |
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331 iPackedFolder->ExtractAttributes(title, url, entryId, feedId, timestamp, unreadCount, statusCode, freq); |
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332 |
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333 // Determine the parent and its sibling index. |
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334 parent = iParentStack[iParentStack.Count() - 1]; |
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335 siblingIndex = iSiblingIndexStack[iSiblingIndexStack.Count() - 1]; |
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336 |
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337 // Add the feed. |
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338 TRAPD( err, iFeedsDatabase->FolderItemAddHelperL(iFolderListId, title, url, |
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339 EFalse, siblingIndex, parent, folderId, newfeedId, freq) ); |
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340 |
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341 // Ignore problematic ones and continue to the next token |
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342 if( err == KErrNone && newfeedId >= 0) |
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343 { |
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344 iSiblingIndexStack[iSiblingIndexStack.Count() - 1]++; |
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345 |
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346 iFolderItemIds.AppendL(folderId); |
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347 iFeedIds.AppendL(newfeedId); |
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348 } |
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349 break; |
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350 } |
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351 } |
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352 |