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1 /* |
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2 * Copyright (c) 2005-2009 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: Manages object search from database* |
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15 */ |
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16 |
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17 #include <badesca.h> |
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18 |
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19 #include "mdsfindsequence.h" |
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20 |
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21 #include "mdcitem.h" |
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22 #include "mdcresult.h" |
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23 #include "mdcserializationbuffer.h" |
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24 #include "mdsschema.h" |
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25 #include "mdslogger.h" |
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26 #include "mdsfindengine.h" |
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27 #include "mdssqlfindoperation.h" |
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28 #include "mdssqliteconnection.h" |
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29 #include "mdsfindsqlclause.h" |
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30 #include "mdsdbconnectionpool.h" |
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31 #include "mdsclausebuffer.h" |
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32 |
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33 |
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34 /** logging instance */ |
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35 __USES_LOGGER |
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36 |
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37 |
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38 // ------------------------------------------------ |
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39 // NewL |
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40 // ------------------------------------------------ |
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41 // |
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42 CMdSFindSequence* CMdSFindSequence::NewL( |
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43 CMdSServer& aServer, CMdsSchema& aSchema, CMdSFindEngine& aObserver ) |
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44 { |
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45 CMdSFindSequence* self = CMdSFindSequence::NewLC( aServer, aSchema, aObserver ); |
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46 CleanupStack::Pop( self ); |
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47 return self; |
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48 } |
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49 |
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50 // ------------------------------------------------ |
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51 // NewLC |
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52 // ------------------------------------------------ |
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53 // |
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54 CMdSFindSequence* CMdSFindSequence::NewLC( |
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55 CMdSServer& aServer, CMdsSchema& aSchema, CMdSFindEngine& aObserver ) |
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56 { |
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57 CMdSFindSequence* self = new(ELeave) CMdSFindSequence( aServer, aSchema, aObserver ); |
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58 CleanupStack::PushL( self ); |
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59 self->ConstructL(); |
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60 return self; |
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61 } |
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62 |
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63 // ------------------------------------------------ |
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64 // Default constructor |
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65 // ------------------------------------------------ |
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66 // |
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67 CMdSFindSequence::CMdSFindSequence( |
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68 CMdSServer& aServer, CMdsSchema& aSchema, CMdSFindEngine& aObserver ) |
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69 : CActive( CActive::EPriorityStandard ) |
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70 , iServer( aServer ) |
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71 , iSchema( aSchema ) |
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72 , iObserver( &aObserver ) |
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73 , iUserLevel( EUserLevelNone ) |
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74 { |
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75 iNotifyCount = KMaxTUint32; |
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76 |
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77 iFindOperation = NULL; |
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78 } |
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79 |
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80 // ------------------------------------------------ |
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81 // ConstructL |
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82 // ------------------------------------------------ |
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83 // |
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84 void CMdSFindSequence::ConstructL() |
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85 { |
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86 CActiveScheduler::Add( this ); |
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87 __INIT_LOGGER; |
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88 } |
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89 |
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90 // ------------------------------------------------ |
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91 // Destructor |
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92 // ------------------------------------------------ |
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93 // |
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94 CMdSFindSequence::~CMdSFindSequence() |
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95 { |
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96 CleanUp(); |
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97 |
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98 Cancel(); |
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99 } |
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100 |
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101 void CMdSFindSequence::SetFindParams( TUint32 aNotifyCount ) |
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102 { |
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103 iNotifyCount = aNotifyCount; |
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104 } |
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105 |
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106 // ------------------------------------------------ |
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107 // FindL |
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108 // ------------------------------------------------ |
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109 // |
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110 TInt CMdSFindSequence::FindL( |
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111 CMdCSerializationBuffer& aSerializedCriteria, |
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112 TUserLevel aUserLevel ) |
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113 { |
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114 __ASSERT_DEBUG( !iFindOperation, MMdCCommon::Panic( KErrCorrupt ) ); |
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115 |
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116 iUserLevel = aUserLevel; |
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117 |
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118 iSerializedCriteria = &aSerializedCriteria; |
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119 |
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120 if( iFindResults ) |
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121 { |
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122 delete iFindResults; |
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123 iFindResults = NULL; |
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124 } |
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125 |
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126 iFindOperation = CreateOperationL( aSerializedCriteria ); |
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127 |
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128 TInt result = KErrNone; |
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129 result = iFindOperation->ExecuteL(); |
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130 |
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131 iFindResults = iFindOperation->Results(); |
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132 |
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133 if( iFindResults ) |
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134 { |
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135 PostProcessL( *iFindResults ); |
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136 } |
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137 |
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138 return result; |
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139 } |
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140 |
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141 // ------------------------------------------------ |
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142 // ContinueL |
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143 // ------------------------------------------------ |
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144 // |
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145 TInt CMdSFindSequence::ContinueL() |
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146 { |
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147 __ASSERT_DEBUG( iFindOperation, MMdCCommon::Panic( KErrCorrupt ) ); |
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148 |
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149 if( iFindResults ) |
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150 { |
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151 delete iFindResults; |
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152 iFindResults = NULL; |
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153 } |
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154 |
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155 TInt result = iFindOperation->ContinueL(); |
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156 |
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157 if ( result == KErrNone ) |
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158 { |
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159 iFindResults = iFindOperation->Results(); |
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160 |
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161 if( iFindResults ) |
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162 { |
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163 PostProcessL( *iFindResults ); |
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164 } |
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165 } |
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166 |
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167 return result; |
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168 } |
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169 |
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170 // ------------------------------------------------ |
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171 // FindAsync |
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172 // ------------------------------------------------ |
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173 // |
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174 void CMdSFindSequence::FindAsync(CMdCSerializationBuffer& aSerializedCriteria, |
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175 TUserLevel aUserLevel ) |
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176 { |
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177 __ASSERT_DEBUG( !iFindOperation, MMdCCommon::Panic( KErrCorrupt ) ); |
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178 |
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179 iUserLevel = aUserLevel; |
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180 |
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181 if( iFindResults ) |
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182 { |
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183 delete iFindResults; |
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184 iFindResults = NULL; |
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185 } |
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186 |
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187 iSerializedCriteria = &aSerializedCriteria; |
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188 |
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189 SetActive(); |
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190 TRequestStatus* pStatus = &iStatus; |
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191 User::RequestComplete( pStatus, EAsyncFind ); |
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192 } |
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193 |
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194 // ------------------------------------------------ |
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195 // ContinueAsync |
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196 // ------------------------------------------------ |
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197 // |
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198 void CMdSFindSequence::ContinueAsync() |
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199 { |
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200 __ASSERT_DEBUG( iFindOperation, MMdCCommon::Panic( KErrCorrupt ) ); |
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201 |
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202 if( iFindResults ) |
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203 { |
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204 delete iFindResults; |
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205 iFindResults = NULL; |
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206 } |
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207 |
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208 SetActive(); |
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209 TRequestStatus* pStatus = &iStatus; |
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210 User::RequestComplete( pStatus, EContinueAsyncFind ); |
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211 } |
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212 |
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213 // ------------------------------------------------ |
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214 // Results |
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215 // ------------------------------------------------ |
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216 // |
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217 CMdCSerializationBuffer& CMdSFindSequence::ResultsL() const |
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218 { |
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219 if( !iFindResults ) |
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220 { |
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221 User::Leave( KErrCorrupt ); |
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222 } |
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223 |
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224 return *iFindResults; |
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225 } |
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226 |
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227 // ------------------------------------------------ |
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228 // SetResultMode |
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229 // ------------------------------------------------ |
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230 // |
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231 void CMdSFindSequence::SetResultMode( TBool aResultModeItems ) |
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232 { |
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233 iLastResultModeItems = aResultModeItems; |
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234 iObserver->SetResultMode( aResultModeItems ); |
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235 } |
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236 |
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237 // ------------------------------------------------ |
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238 // RunL |
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239 // ------------------------------------------------ |
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240 // |
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241 void CMdSFindSequence::RunL() |
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242 { |
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243 TInt result = 0; |
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244 |
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245 switch ( iStatus.Int() ) |
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246 { |
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247 case EAsyncFind: |
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248 { |
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249 iFindOperation = CreateOperationL( *iSerializedCriteria ); |
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250 result = iFindOperation->ExecuteL(); |
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251 break; |
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252 } |
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253 case EContinueAsyncFind: |
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254 { |
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255 if( iFindOperation ) |
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256 { |
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257 result = iFindOperation->ContinueL(); |
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258 } |
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259 else |
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260 { |
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261 result = KErrNotFound; |
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262 } |
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263 break; |
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264 } |
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265 default: |
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266 { |
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267 #ifdef _DEBUG |
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268 User::Panic( _L("MdSFSRun") , KErrCorrupt ); |
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269 #endif |
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270 User::Leave( KErrCorrupt ); |
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271 } |
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272 } |
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273 if( result == KErrNone || result == KFindSetReady ) |
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274 { |
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275 iFindResults = iFindOperation->Results(); |
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276 |
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277 if( iFindResults ) |
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278 { |
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279 PostProcessL( *iFindResults ); |
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280 } |
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281 } |
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282 |
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283 if ( result == KFindSetReady ) |
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284 { |
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285 CMdSFindEngine* obs = iObserver; |
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286 if ( obs ) |
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287 { |
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288 obs->SetComplete( KErrNone ); |
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289 } |
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290 } |
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291 else if ( result == KErrCancel ) |
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292 { |
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293 CleanUp(); |
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294 // do NOT notify observer |
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295 } |
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296 else |
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297 { |
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298 CMdSFindEngine* obs = iObserver; |
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299 if ( obs ) |
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300 { |
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301 obs->FindComplete( result ); |
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302 } |
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303 } |
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304 } |
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305 |
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306 // ------------------------------------------------ |
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307 // RunError |
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308 // ------------------------------------------------ |
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309 // |
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310 TInt CMdSFindSequence::RunError( TInt aError ) |
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311 { |
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312 // Cleanup if RunL() leaves |
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313 CMdSFindEngine* obs = iObserver; |
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314 CleanUp(); |
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315 obs->FindComplete( aError ); |
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316 return KErrNone; |
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317 } |
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318 |
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319 // ------------------------------------------------ |
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320 // DoCancel |
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321 // ------------------------------------------------ |
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322 // |
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323 void CMdSFindSequence::DoCancel() |
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324 { |
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325 if ( !iFindOperation ) |
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326 { |
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327 // already finished |
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328 CleanUp(); |
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329 return; |
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330 } |
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331 TInt state = iFindOperation->State(); |
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332 if ( state == CMdSSqlFindOperation::EStateIdle ) |
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333 { |
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334 // loop is idle - safe to clean up. |
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335 CleanUp(); |
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336 } |
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337 else if ( state == CMdSSqlFindOperation::EStateRunning ) |
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338 { |
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339 // interrupt loop. |
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340 iFindOperation->Cancel(); |
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341 } |
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342 else if ( state == CMdSSqlFindOperation::EStateDead ) |
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343 { |
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344 // loop is already ending. |
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345 } |
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346 return; |
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347 } |
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348 |
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349 // ------------------------------------------------ |
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350 // CreateOperationL |
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351 // ------------------------------------------------ |
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352 // |
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353 CMdSSqlFindOperation* CMdSFindSequence::CreateOperationL( |
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354 CMdCSerializationBuffer& aSerializedCriteria ) |
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355 { |
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356 CMdSSqlFindOperation* operation = CreateOperationLC( aSerializedCriteria ); |
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357 CleanupStack::Pop( operation ); |
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358 return operation; |
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359 } |
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360 |
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361 // ------------------------------------------------ |
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362 // CreateOperationLC |
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363 // ------------------------------------------------ |
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364 // |
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365 CMdSSqlFindOperation* CMdSFindSequence::CreateOperationLC( |
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366 CMdCSerializationBuffer& aSerializedCriteria ) |
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367 { |
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368 CMdSSqlFindOperation* operation = CMdSSqlFindOperation::NewLC( *this, iNotifyCount ); |
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369 |
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370 CMdSFindSqlClause& findSqlClause = operation->FindCriteria(); |
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371 |
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372 if( aSerializedCriteria.Buffer().Ptr() && aSerializedCriteria.Buffer().Length() != 0 ) |
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373 { |
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374 findSqlClause.CreateL( aSerializedCriteria, iUserLevel ); |
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375 |
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376 operation->SetLimit( findSqlClause.Limit() ); |
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377 |
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378 __LOGQUERY_16( _L("Execute query:"), operation->FindCriteria().AsTextL(), operation->FindCriteria().Variables() ); |
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379 } |
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380 else |
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381 { |
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382 User::Leave( KErrBadDescriptor ); |
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383 } |
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384 |
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385 return operation; |
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386 } |
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387 |
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388 struct TObjectHitCount |
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389 { |
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390 TInt iCount; |
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391 TUint32 iObjectOffset; |
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392 }; |
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393 |
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394 static TInt SortValues(const TObjectHitCount& aFirst, const TObjectHitCount& aSecond) |
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395 { |
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396 TInt result = aSecond.iCount - aFirst.iCount; |
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397 if (result == 0) |
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398 { |
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399 result = aFirst.iObjectOffset - aSecond.iObjectOffset; |
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400 } |
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401 return result; |
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402 } |
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403 |
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404 void CMdSFindSequence::GetFreeTextForObjectL( CDesCArray& aResultWordBuffer, |
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405 TDefId aNamespaceDefId, TItemId aObjectId ) |
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406 { |
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407 _LIT( KMdSFindSeqWords, "SELECT Word FROM TextSearch%u AS ts, TextSearchDictionary%u AS tsd ON tsd.WordId = ts.WordId WHERE ObjectId = ? ORDER BY Position ASC;" ); |
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408 |
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409 CMdsClauseBuffer* buffer = CMdsClauseBuffer::NewLC( KMdSFindSeqWords.iTypeLength + 20 ); // two int |
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410 buffer->BufferL().Format( KMdSFindSeqWords, aNamespaceDefId, aNamespaceDefId ); |
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411 |
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412 CMdSSqLiteConnection& connection = MMdSDbConnectionPool::GetDefaultDBL(); |
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413 |
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414 RRowData data; |
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415 CleanupClosePushL( data ); |
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416 data.AppendL( TColumn( aObjectId ) ); |
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417 RMdsStatement query; |
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418 CleanupClosePushL( query ); |
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419 connection.ExecuteQueryL( buffer->ConstBufferL(), query, data ); |
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420 TPtrC16 word; |
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421 data.Column(0).Set( word ); |
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422 while (connection.NextRowL(query, data)) |
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423 { |
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424 data.Column(0).Get( word ); |
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425 aResultWordBuffer.AppendL( word ); |
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426 data.Free(); |
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427 } |
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428 |
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429 CleanupStack::PopAndDestroy( 3, buffer ); // query, data, buffer |
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430 } |
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431 |
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432 // ------------------------------------------------ |
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433 // PostProcessL |
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434 // ------------------------------------------------ |
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435 // |
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436 void CMdSFindSequence::PostProcessL( CMdCSerializationBuffer& aSerializedResultBuffer ) |
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437 { |
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438 #ifdef _DEBUG |
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439 _LIT( KFindFunctionName, "CMdSFindSequence::PostProcessL" ); |
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440 #endif |
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441 |
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442 // process only on items result |
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443 if (!iLastResultModeItems) |
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444 { |
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445 return; |
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446 } |
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447 |
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448 if(iFindOperation && iFindOperation->FindCriteria().IncludesFreetexts() == EFalse ) |
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449 { |
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450 return; |
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451 } |
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452 |
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453 if (!iFindOperation) |
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454 { |
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455 return; |
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456 } |
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457 |
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458 RPointerArray<HBufC>& searchFreeText = iFindOperation->QueryFreeText(); |
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459 // to through every object and check freetext |
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460 aSerializedResultBuffer.PositionL( KNoOffset ); |
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461 const TMdCItems& items = TMdCItems::GetFromBufferL( aSerializedResultBuffer ); |
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462 const TBool needToSort = searchFreeText.Count() != 0 |
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463 && items.iObjects.iPtr.iCount > 1; |
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464 |
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465 RArray<TObjectHitCount> hitCountArray; |
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466 CleanupClosePushL( hitCountArray ); |
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467 |
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468 TObjectHitCount hitCount; |
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469 for( TUint32 i = 0; i < items.iObjects.iPtr.iCount; ++i ) |
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470 { |
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471 aSerializedResultBuffer.PositionL( items.iObjects.iPtr.iOffset |
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472 + i * sizeof(TMdCObject) ); |
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473 const TMdCObject& object = TMdCObject::GetFromBufferL( aSerializedResultBuffer ); |
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474 // check all objects |
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475 |
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476 // jump to freetext |
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477 if ( object.iFreeTexts.iPtr.iCount == 0 ) |
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478 { |
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479 continue; |
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480 } |
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481 |
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482 CDesC16ArrayFlat* resultWordBuffer = new(ELeave) CDesC16ArrayFlat( object.iFreeTexts.iPtr.iCount ); |
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483 CleanupStack::PushL( resultWordBuffer ); |
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484 // get freetext for object |
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485 GetFreeTextForObjectL( *resultWordBuffer, items.iNamespaceDefId, object.iId ); |
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486 __ASSERT_DEBUG( object.iFreeTexts.iPtr.iCount == resultWordBuffer->Count(), User::Panic( KFindFunctionName, KErrCorrupt) ); |
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487 |
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488 if (needToSort) |
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489 { |
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490 hitCount.iObjectOffset = items.iObjects.iPtr.iOffset + i * sizeof(TMdCObject); |
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491 hitCount.iCount = GetFreeTextHitCountL( *resultWordBuffer, searchFreeText ); |
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492 hitCountArray.AppendL( hitCount ); |
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493 } |
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494 |
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495 aSerializedResultBuffer.PositionL( object.iFreeTexts.iPtr.iOffset ); |
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496 for ( TUint32 f = 0; f < object.iFreeTexts.iPtr.iCount; ++f ) |
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497 { |
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498 // insert freeText here |
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499 TPtrC16 word = (*resultWordBuffer)[f]; |
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500 aSerializedResultBuffer.InsertL( word ); |
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501 } |
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502 CleanupStack::PopAndDestroy( resultWordBuffer ); |
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503 } |
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504 |
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505 if ( needToSort && hitCountArray.Count() > 1 ) |
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506 { |
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507 hitCountArray.Sort( TLinearOrder<TObjectHitCount>( SortValues ) ); |
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508 |
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509 RArray<TMdCObject> objectArray; |
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510 CleanupClosePushL( objectArray ); |
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511 objectArray.Reserve( items.iObjects.iPtr.iCount ); |
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512 // store objects in array in correct order |
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513 for( TInt i = 0; i < items.iObjects.iPtr.iCount; ++i ) |
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514 { |
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515 aSerializedResultBuffer.PositionL( hitCountArray[i].iObjectOffset ); |
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516 const TMdCObject& object = TMdCObject::GetFromBufferL( aSerializedResultBuffer ); |
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517 objectArray.AppendL( object ); |
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518 } |
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519 // set them back in serialized buffer |
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520 aSerializedResultBuffer.PositionL( items.iObjects.iPtr.iOffset ); |
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521 for (TInt i = 0; i < items.iObjects.iPtr.iCount; ++i) |
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522 { |
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523 objectArray[i].SerializeL( aSerializedResultBuffer ); |
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524 } |
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525 CleanupStack::PopAndDestroy( &objectArray ); |
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526 } |
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527 |
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528 CleanupStack::PopAndDestroy( &hitCountArray ); |
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529 } |
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530 |
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531 // ------------------------------------------------ |
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532 // CleanUp |
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533 // ------------------------------------------------ |
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534 // |
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535 void CMdSFindSequence::CleanUp() |
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536 { |
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537 // clean up rubbish |
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538 if( iFindOperation ) |
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539 { |
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540 delete iFindOperation; |
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541 iFindOperation = NULL; |
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542 } |
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543 |
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544 iObserver = NULL; |
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545 |
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546 if( iFindResults ) |
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547 { |
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548 delete iFindResults; |
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549 iFindResults = NULL; |
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550 } |
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551 } |
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552 |
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553 // ------------------------------------------------ |
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554 // IsCleaned |
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555 // ------------------------------------------------ |
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556 // |
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557 TBool CMdSFindSequence::IsComplete() const |
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558 { |
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559 // not failed or query still running |
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560 if( //iObserver || |
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561 ( iFindOperation && iFindOperation->State() != CMdSSqlFindOperation::EStateDead ) ) |
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562 { |
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563 return EFalse; |
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564 } |
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565 |
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566 return ETrue; |
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567 } |
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568 |
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569 // ------------------------------------------------ |
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570 // IsComplete |
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571 // ------------------------------------------------ |
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572 // |
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573 TBool CMdSFindSequence::IsQueryComplete() const |
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574 { |
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575 if ( iFindOperation ) |
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576 { |
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577 return ( iFindOperation->State() == CMdSSqlFindOperation::EStateDead ); |
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578 } |
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579 else |
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580 { |
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581 return ETrue; |
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582 } |
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583 } |
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584 |
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585 const CMdsSchema& CMdSFindSequence::Schema() const |
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586 { |
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587 return iSchema; |
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588 } |
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589 |
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590 CMdSServer& CMdSFindSequence::Server() const |
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591 { |
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592 return iServer; |
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593 } |
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594 |
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595 // ------------------------------------------------ |
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596 // GetFreeTextHitCountL |
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597 // ------------------------------------------------ |
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598 // |
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599 TUint32 CMdSFindSequence::GetFreeTextHitCountL( |
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600 const CDesCArray& aObjectFreeText, |
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601 const RPointerArray<HBufC>& aSearchFreeText) |
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602 { |
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603 TUint32 hitCount = 0; |
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604 |
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605 const TInt objectFreeTextCount = aObjectFreeText.Count(); |
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606 |
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607 for(TInt i = 0; i < objectFreeTextCount; ++i) |
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608 { |
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609 TInt length = aObjectFreeText[i].Length(); |
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610 const TDesC& objectText = aObjectFreeText[i]; |
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611 const TInt32 objectTextLength = objectText.Length(); |
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612 const TInt searchFreeTextCount = aSearchFreeText.Count(); |
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613 |
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614 for( TInt j = 0; j < searchFreeTextCount; ++j ) |
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615 { |
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616 const TDesC& searchText = *aSearchFreeText[j]; |
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617 const TInt32 searchTextLength = searchText.Length(); |
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618 |
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619 if (searchTextLength > objectTextLength) |
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620 { |
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621 continue; |
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622 } |
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623 TInt32 searchStart = 0; |
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624 while(objectTextLength - searchStart >= searchTextLength) |
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625 { |
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626 const TInt retValue = objectText.Mid(searchStart, |
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627 objectTextLength - searchStart).FindF(searchText); |
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628 |
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629 if(retValue != KErrNotFound) |
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630 { |
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631 searchStart += retValue+searchTextLength; |
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632 hitCount++; |
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633 } |
|
634 else |
|
635 { |
|
636 break; |
|
637 } |
|
638 } |
|
639 } |
|
640 } |
|
641 return hitCount; |
|
642 } |