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1 /* |
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2 * Copyright (c) 2002-2005 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 "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: Operation for removing landmarks from a database. |
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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 #include <epos_cposlmresourcereader.h> |
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21 #include <eposlmasyncops.rsg> |
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22 #include <EPos_LandmarksErrors.h> |
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23 #include <epos_cposlmdiskutilities.h> |
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24 #include <epos_cposlmlocaldbaccess.h> |
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25 #include <epos_poslmlandmarkhandler.h> |
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26 |
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27 #include "epos_cposlmlocaldatabase.h" |
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28 #include "EPos_LocalLandmarks.h" |
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29 #include "EPos_CPosLmLocalLandmarkIterator.h" |
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30 #include "epos_rposlmlocalnameindex.h" |
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31 #include "EPos_RPosLmLocalAccessSubsession.h" |
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32 #include "EPos_CPosLmLocalRemoveLandmarksOp.h" |
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33 |
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34 // ============================ MEMBER FUNCTIONS =============================== |
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35 |
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36 // ----------------------------------------------------------------------------- |
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37 // ----------------------------------------------------------------------------- |
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38 // |
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39 CPosLmLocalRemoveLandmarksOp::CPosLmLocalRemoveLandmarksOp( CPosLmLocalDatabase& aDb ) : |
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40 CPosLmLocalModifyOp(aDb) |
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41 { |
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42 iUsesServerData = ETrue; |
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43 } |
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44 |
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45 // ----------------------------------------------------------------------------- |
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46 // ----------------------------------------------------------------------------- |
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47 // |
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48 void CPosLmLocalRemoveLandmarksOp::ConstructL( |
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49 const RArray<TPosLmItemId>& aLandmarkIdArray, |
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50 TInt aResourceId ) |
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51 { |
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52 if ( aLandmarkIdArray.Count() == 0 ) |
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53 { |
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54 User::Leave( KErrArgument ); |
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55 } |
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56 |
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57 BaseConstructL(); |
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58 |
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59 ReadInfoFromResourceFileL( aResourceId ); |
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60 |
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61 iLandmarkIdArray.ReserveL( aLandmarkIdArray.Count() ); // to avoid heap fragmentation |
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62 for ( TInt i = 0; i < aLandmarkIdArray.Count(); i++ ) |
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63 { |
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64 iLandmarkIdArray.Append( aLandmarkIdArray[i] ); |
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65 } |
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66 } |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // ----------------------------------------------------------------------------- |
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70 // |
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71 void CPosLmLocalRemoveLandmarksOp::ConstructL() |
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72 { |
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73 BaseConstructL(); |
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74 |
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75 CPosLmItemIterator* iterator = |
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76 CPosLmLocalLandmarkIterator::NewL( *iDb, ETrue ); |
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77 CleanupStack::PushL( iterator ); |
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78 |
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79 if ( iterator->NumOfItemsL() > 0 ) |
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80 { |
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81 iterator->GetItemIdsL( iLandmarkIdArray, 0, iterator->NumOfItemsL() ); |
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82 } |
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83 |
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84 CleanupStack::PopAndDestroy( iterator ); |
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85 |
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86 if ( iLandmarkIdArray.Count() > 0 ) |
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87 { |
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88 // Check disk space |
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89 CPosLmDiskUtilities* diskutil = CPosLmDiskUtilities::NewL(); |
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90 CleanupStack::PushL(diskutil); |
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91 diskutil->DiskSpaceBelowCriticalLevelL( |
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92 diskutil->EstimatedDiskSizeOfLmOperation( |
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93 CPosLmDiskUtilities::ERemoveLandmarksOp, |
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94 iLandmarkIdArray), iDb->DatabaseDrive()); |
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95 CleanupStack::PopAndDestroy(diskutil); |
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96 |
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97 ReadInfoFromResourceFileL( R_POS_LM_LOCAL_REMOVE_ALL_LMS_OP ); |
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98 } |
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99 } |
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100 |
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101 // ----------------------------------------------------------------------------- |
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102 // ----------------------------------------------------------------------------- |
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103 // |
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104 CPosLmLocalRemoveLandmarksOp* CPosLmLocalRemoveLandmarksOp::NewL( |
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105 CPosLmLocalDatabase& aDb, |
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106 const RArray<TPosLmItemId>& aLandmarkIdArray) |
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107 { |
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108 CPosLmLocalRemoveLandmarksOp* self = new (ELeave) |
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109 CPosLmLocalRemoveLandmarksOp(aDb); |
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110 CleanupStack::PushL(self); |
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111 self->ConstructL(aLandmarkIdArray, R_POS_LM_LOCAL_REMOVE_LMS_OP); |
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112 CleanupStack::Pop(self); |
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113 return self; |
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114 } |
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115 |
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116 // ----------------------------------------------------------------------------- |
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117 // ----------------------------------------------------------------------------- |
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118 // |
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119 CPosLmLocalRemoveLandmarksOp* CPosLmLocalRemoveLandmarksOp::NewL( |
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120 CPosLmLocalDatabase& aDb) |
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121 { |
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122 CPosLmLocalRemoveLandmarksOp* self = new (ELeave) |
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123 CPosLmLocalRemoveLandmarksOp(aDb); |
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124 CleanupStack::PushL(self); |
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125 self->ConstructL(); |
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126 CleanupStack::Pop(self); |
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127 return self; |
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128 } |
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129 |
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130 // ----------------------------------------------------------------------------- |
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131 // ----------------------------------------------------------------------------- |
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132 // |
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133 CPosLmLocalRemoveLandmarksOp::~CPosLmLocalRemoveLandmarksOp() |
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134 { |
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135 RollbackAndGenerateEventIfNeeded(Progress()); |
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136 |
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137 iLandmarkIdArray.Close(); |
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138 } |
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139 |
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140 // ----------------------------------------------------------------------------- |
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141 // ----------------------------------------------------------------------------- |
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142 // |
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143 void CPosLmLocalRemoveLandmarksOp::DoNextStepPreL( |
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144 TReal32& aProgress) |
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145 { |
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146 if ( iLandmarkIdArray.Count() == 0 ) |
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147 { |
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148 aProgress = 1; |
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149 } |
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150 else |
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151 { |
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152 RArray<TPosLmItemId> removed; |
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153 CleanupClosePushL( removed ); |
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154 for (TInt i = 0; i < iNoOfSubOperations && |
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155 iCurrent < iLandmarkIdArray.Count(); i++) |
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156 { |
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157 PosLmLandmarkHandler::RemoveLandmarkL( |
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158 *iDb->DatabaseAccess(), iLandmarkIdArray[iCurrent] ); |
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159 removed.AppendL( iLandmarkIdArray[iCurrent] ); |
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160 |
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161 iCurrent++; |
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162 } |
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163 iDb->NameIndex().RemoveL( removed ); |
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164 CleanupStack::PopAndDestroy( &removed ); |
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165 |
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166 // Set progress |
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167 aProgress = TReal32(iCurrent)/iLandmarkIdArray.Count(); |
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168 } |
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169 } |
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170 |
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171 // ----------------------------------------------------------------------------- |
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172 // ----------------------------------------------------------------------------- |
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173 // |
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174 TBool CPosLmLocalRemoveLandmarksOp::DoNextStepPostL( |
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175 TReal32& aProgress) |
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176 { |
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177 if (iCurrent < iLandmarkIdArray.Count()) |
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178 { |
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179 return ETrue; |
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180 } |
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181 |
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182 User::LeaveIfError(GenerateEventIfNeeded(aProgress)); |
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183 iStatusFlag = KErrNone; |
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184 return EFalse; |
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185 } |
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186 |
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187 // ----------------------------------------------------------------------------- |
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188 // ----------------------------------------------------------------------------- |
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189 // |
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190 TReal32 CPosLmLocalRemoveLandmarksOp::Step() |
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191 { |
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192 if (iLandmarkIdArray.Count() == 0) |
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193 { |
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194 return 1.0f; |
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195 } |
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196 return 1.0f/iLandmarkIdArray.Count(); |
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197 } |
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198 |
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199 // ----------------------------------------------------------------------------- |
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200 // ----------------------------------------------------------------------------- |
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201 // |
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202 void CPosLmLocalRemoveLandmarksOp::CheckResourceValue( |
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203 TInt /*aResourceId*/, |
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204 TInt aNoOfSubOperations) |
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205 { |
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206 __ASSERT_ALWAYS(aNoOfSubOperations > 0, Panic(KPosLandmarksClientPanic, |
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207 EPosInvalidValueSpecifiedInResourceFile)); |
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208 } |
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209 |
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210 // ----------------------------------------------------------------------------- |
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211 // ----------------------------------------------------------------------------- |
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212 // |
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213 void CPosLmLocalRemoveLandmarksOp::HandleError( |
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214 TInt& aError) |
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215 { |
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216 iStatusFlag = aError; |
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217 RollbackAndGenerateEventIfNeeded(Progress()); |
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218 } |
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219 |
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220 // ----------------------------------------------------------------------------- |
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221 // ----------------------------------------------------------------------------- |
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222 // |
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223 void CPosLmLocalRemoveLandmarksOp::RollbackAndGenerateEventIfNeeded( |
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224 TReal32 aProgress) |
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225 { |
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226 RollbackIfNeeded(); |
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227 |
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228 GenerateEventIfNeeded(aProgress); |
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229 |
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230 // Reset flag: rollback and event generation should not be done twice. |
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231 iStatusFlag = KErrNone; |
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232 } |
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233 |
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234 // ----------------------------------------------------------------------------- |
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235 // ----------------------------------------------------------------------------- |
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236 // |
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237 TInt CPosLmLocalRemoveLandmarksOp::GenerateEventIfNeeded( |
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238 TReal32 aProgress) |
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239 { |
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240 if (iStatusFlag != KErrNone && aProgress > 0) |
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241 { |
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242 // If only one landmark has been removed, a more specific event can be |
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243 // reported. |
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244 if (iCurrent == 1) |
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245 { |
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246 return iDb->RegisterEvent(EPosLmEventLandmarkDeleted, |
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247 iLandmarkIdArray[0]); |
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248 } |
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249 |
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250 // If more than one landmark have been removed, a general event is |
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251 // reported. |
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252 if (iCurrent > 0) |
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253 { |
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254 return iDb->RegisterEvent(EPosLmEventLandmarkUnknownChanges); |
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255 } |
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256 |
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257 } |
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258 // Nothing has happend, don't report event. |
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259 return KErrNone; |
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260 } |
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261 |