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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: A local representation of the operation class assigned for operations that |
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15 * modifies the database. |
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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 #include <epos_cposlmlocaldbaccess.h> |
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22 #include <epos_cposlmresourcereader.h> |
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23 |
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24 #include "epos_cposlmlocaldatabase.h" |
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25 #include "EPos_RPosLmLocalAccessSubsession.h" |
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26 #include "EPos_LocalLandmarks.h" |
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27 #include "EPos_CPosLmLocalModifyOp.h" |
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28 |
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29 const TReal32 KPosLmLocalSubOpInitialProgress = 0.05f; |
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30 const TReal32 KPosLmLocalSubOpProgressChange = 0.9f; |
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31 const TReal32 KPosLmLocalSubOpAlmost100Percent = 0.99f; |
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32 |
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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 CPosLmLocalModifyOp::CPosLmLocalModifyOp( |
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40 CPosLmLocalDatabase& aDb) : |
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41 CPosLmLocalOperation(aDb), |
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42 iStatusFlag(KPosLmOperationNotComplete), |
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43 iCompactState(ECompactSubOperationOff) |
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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 // ----------------------------------------------------------------------------- |
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49 // |
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50 void CPosLmLocalModifyOp::BaseConstructL() |
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51 { |
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52 CPosLmLocalOperation::BaseConstructL(); |
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53 |
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54 AquireLockL(CPosLmLocalDatabase::EWriteLock); |
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55 User::LeaveIfError(iDb->DatabaseAccess()->BeginTransaction()); |
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56 if ( iUsesServerData ) |
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57 { |
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58 iDb->BeginServerTransactionL(); |
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59 } |
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60 } |
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61 |
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62 // ----------------------------------------------------------------------------- |
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63 // ----------------------------------------------------------------------------- |
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64 // |
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65 CPosLmLocalModifyOp::~CPosLmLocalModifyOp() |
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66 { |
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67 delete iCompactSubOp; |
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68 } |
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69 |
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70 // ----------------------------------------------------------------------------- |
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71 // ----------------------------------------------------------------------------- |
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72 // |
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73 TInt CPosLmLocalModifyOp::NextStepL( |
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74 TReal32& aProgress) |
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75 { |
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76 if (iCompactState == ECompactSubOperationOn) |
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77 { |
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78 // Compact state. Continue compacting sub operation. |
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79 TReal32 progress; |
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80 if (iCompactSubOp->NextL(progress)) |
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81 { |
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82 delete iCompactSubOp; |
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83 iCompactSubOp = NULL; |
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84 iCompactState = ECompactSubOperationOff; |
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85 } |
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86 |
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87 aProgress = iSavedProgress + |
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88 CalculateSubOperationProgress(Step(), progress); |
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89 } |
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90 else |
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91 { |
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92 // Normal operation state |
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93 DoNextStepPreL(aProgress); |
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94 |
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95 User::LeaveIfError(iDb->DatabaseAccess()->CommitTransaction()); |
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96 if ( iUsesServerData ) |
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97 { |
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98 iDb->CommitServerTransactionL(); |
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99 } |
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100 |
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101 if (iDb->DatabaseAccess()->IsCompactNeededL()) |
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102 { |
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103 RecalculateProgressDueToCompact(aProgress, Step()); |
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104 |
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105 iCompactState = ECompactSubOperationOn; |
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106 iSavedProgress = aProgress; |
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107 iCompactSubOp = CPosLmCompactDatabase::NewL(*iDb->DatabaseAccess()); |
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108 } |
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109 } |
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110 |
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111 if (iCompactState == ECompactSubOperationOff) |
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112 { |
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113 if (DoNextStepPostL(aProgress)) |
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114 { |
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115 User::LeaveIfError(iDb->DatabaseAccess()->BeginTransaction()); |
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116 if ( iUsesServerData ) |
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117 { |
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118 iDb->BeginServerTransactionL(); |
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119 } |
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120 } |
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121 else |
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122 { |
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123 ReleaseLock(); |
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124 } |
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125 } |
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126 |
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127 return iStatusFlag; |
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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 void CPosLmLocalModifyOp::ReadInfoFromResourceFileL( |
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134 TInt aResourceId) |
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135 { |
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136 CPosLmResourceReader* resources = CPosLmResourceReader::NewLC( |
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137 KPosLocalSuboperationResourceFile); |
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138 iNoOfSubOperations = resources->ReadInt32L(aResourceId); |
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139 CleanupStack::PopAndDestroy(resources); |
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140 |
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141 CheckResourceValue(aResourceId, iNoOfSubOperations); |
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142 } |
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143 |
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144 // ----------------------------------------------------------------------------- |
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145 // ----------------------------------------------------------------------------- |
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146 // |
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147 void CPosLmLocalModifyOp::RollbackIfNeeded() |
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148 { |
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149 if ( iStatusFlag != KErrNone ) |
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150 { |
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151 if (iDb->DatabaseAccess()->InTransaction()) |
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152 { |
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153 iDb->DatabaseAccess()->RollbackTransaction(); |
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154 if ( iUsesServerData ) |
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155 { |
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156 iDb->RollbackServerTransaction(); |
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157 } |
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158 } |
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159 ReleaseLock(); |
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160 } |
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161 } |
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162 |
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163 // ----------------------------------------------------------------------------- |
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164 // ----------------------------------------------------------------------------- |
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165 // |
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166 TBool CPosLmLocalModifyOp::IsInCompactingState() |
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167 { |
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168 return (iCompactState == ECompactSubOperationOn); |
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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 TReal32 CPosLmLocalModifyOp::CalculateSubOperationProgress( |
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175 TReal32 aProgressStep, |
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176 TReal32 aCompactProgress) |
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177 { |
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178 return aProgressStep * (KPosLmLocalSubOpInitialProgress + |
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179 KPosLmLocalSubOpProgressChange * aCompactProgress); |
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180 } |
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181 |
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182 // ----------------------------------------------------------------------------- |
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183 // ----------------------------------------------------------------------------- |
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184 // |
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185 void CPosLmLocalModifyOp::RecalculateProgressDueToCompact( |
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186 TReal32& aProgress, |
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187 TReal32 aProgressStep) |
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188 { |
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189 aProgress = aProgress - aProgressStep * KPosLmLocalSubOpAlmost100Percent; |
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190 } |
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191 |