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1 /* |
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2 * Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Class handling the search of several keywords in a block of |
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15 * text. |
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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 <utf.h> |
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22 |
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23 #include <searchtextsearcherobserver.h> |
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24 #include <searchsinglecondition.h> |
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25 #include <searchcondition.h> |
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26 #include <searchfield.h> |
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27 #include <searchtextsearcher.h> |
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28 #include "searchkeywordstatus.h" |
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29 #include "searchalgorithm.h" |
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30 |
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31 #include <featmgr.h> |
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32 |
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33 _LIT(KColon,":"); |
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34 const TInt KNumberDataLength( 50 ); |
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35 const TInt KTimeDataLength( 50 ); |
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36 const TInt KArrayGranularity( 2 ); |
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37 const TInt KSingleKeywordInArray( 1 ); |
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38 |
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39 |
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40 // ----------------------------------------------------------------------------- |
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41 // CSearchTextSearcher::NewL() |
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42 // Symbian C++ 2 phase construction |
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43 // ----------------------------------------------------------------------------- |
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44 // |
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45 EXPORT_C CSearchTextSearcher* CSearchTextSearcher::NewL( |
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46 MSearchTextSearcherObserver& aObserver ) |
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47 { |
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48 CSearchTextSearcher* self = CSearchTextSearcher::NewLC( aObserver ); |
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49 CleanupStack::Pop( self ); |
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50 return self; |
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51 } |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // CSearchTextSearcher::NewLC() |
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55 // Symbian C++ 2 phase construction |
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56 // ----------------------------------------------------------------------------- |
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57 // |
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58 EXPORT_C CSearchTextSearcher* CSearchTextSearcher::NewLC( |
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59 MSearchTextSearcherObserver& aObserver ) |
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60 { |
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61 CSearchTextSearcher* self = new( ELeave ) CSearchTextSearcher( aObserver ); |
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62 CleanupStack::PushL( self ); |
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63 ( *self ).ConstructL(); |
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64 return self; |
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65 } |
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66 |
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67 // ----------------------------------------------------------------------------- |
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68 // CSearchTextSearcher::~CSearchTextSearcher() |
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69 // C++ destructor |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 CSearchTextSearcher::~CSearchTextSearcher() |
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73 { |
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74 iKeywordSearchStatusArray.Close(); |
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75 |
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76 if ( iSearchKeywords8 ) |
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77 { |
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78 iSearchKeywords8->Reset(); |
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79 delete iSearchKeywords8; |
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80 iSearchKeywords8 = NULL; |
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81 } |
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82 |
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83 if ( iHaveParameters != TRUE ) |
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84 { |
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85 iSearchKeywords16->Reset(); |
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86 delete iSearchKeywords16; |
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87 iSearchKeywords16 = NULL; |
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88 } |
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89 |
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90 if ( iSearchAlgorithm ) |
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91 { |
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92 delete iSearchAlgorithm; |
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93 iSearchAlgorithm = NULL; |
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94 } |
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95 iClause.Reset(); |
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96 iClause.Close(); |
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97 FeatureManager::UnInitializeLib(); |
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98 } |
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99 |
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100 // ----------------------------------------------------------------------------- |
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101 // CSearchTextSearcher::Cleanup() |
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102 // Cleanup Method |
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103 // ----------------------------------------------------------------------------- |
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104 // |
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105 EXPORT_C void CSearchTextSearcher::Cleanup() |
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106 { |
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107 iKeywordSearchStatusArray.Reset(); |
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108 for ( TInt i = 0; i < iKeywordSearchStatusArray.Count() ; i++ ) |
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109 { |
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110 iKeywordSearchStatusArray[i].iFound = EFalse; |
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111 iKeywordSearchStatusArray[i].iFoundAtNthPosition = KErrNotFound; |
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112 } |
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113 } |
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114 // ----------------------------------------------------------------------------- |
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115 // CSearchTextSearcher::SetParametersL() |
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116 // Sets the search parameters for the search. |
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117 // ----------------------------------------------------------------------------- |
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118 // |
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119 EXPORT_C void CSearchTextSearcher::SetParametersL( const MDesCArray& aKeywords, |
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120 CSearchTextSearcher::TSearchCriteriaOperator |
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121 aOperator, TBool aCaseSensitive ) |
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122 { |
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123 iSearchKeywords = static_cast<const CDesC16Array*>( &aKeywords ); |
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124 iOperator = aOperator; |
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125 iCaseSensitive = aCaseSensitive; |
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126 |
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127 //convert from 16 - 8 bits for keyword |
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128 iSearchKeywords8->Reset(); |
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129 iCount = iSearchKeywords->MdcaCount(); |
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130 |
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131 DoUftTo8BitConversionL( *iSearchKeywords ); |
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132 |
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133 //initialize keyword status |
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134 iKeywordSearchStatusArray.Reset(); |
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135 for ( TInt i = 0 ;i < iCount ; i++ ) |
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136 { |
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137 TKeywordSearchStatus status; |
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138 status.iFound = EFalse; |
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139 status.iFoundAtNthPosition = KErrNotFound; |
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140 iKeywordSearchStatusArray.AppendL( status ); |
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141 } |
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142 //Set it here to indicate client has called this method |
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143 iHaveParameters = ETrue; |
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144 if ( iCount == KSingleKeywordInArray) |
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145 { |
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146 iIsBooleanCondition = EFalse; |
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147 } |
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148 else |
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149 { |
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150 iIsBooleanCondition = ETrue; |
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151 //SetCriteriaOperator(); not to be called here , dont have clause yet |
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152 } |
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153 |
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154 } |
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155 |
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156 // ----------------------------------------------------------------------------- |
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157 // CSearchTextSearcher::SetParametersL() |
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158 // Sets the search parameters based on conditions for the search. |
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159 // ----------------------------------------------------------------------------- |
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160 // |
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161 EXPORT_C void CSearchTextSearcher::SetParametersL( const CSearchCondition& |
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162 aCondition ) |
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163 { |
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164 if ( iHaveParameters ) |
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165 { |
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166 return; |
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167 } |
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168 else |
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169 { |
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170 iSearchKeywords16 = new( ELeave ) CDesC16ArrayFlat( KArrayGranularity ); |
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171 } |
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172 |
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173 switch( aCondition.Type() ) |
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174 { |
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175 case CSearchCondition::EConditionTypeSimple: |
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176 { |
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177 iOperator = ESearchCriteriaAND; |
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178 iIsBooleanCondition = EFalse; |
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179 SetSingleConditionDataL( |
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180 *(static_cast<const CSearchSingleCondition*>( &aCondition ) ) ); |
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181 } |
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182 break; |
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183 case CSearchCondition::EConditionTypeBoolean: |
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184 { |
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185 iOperator = ESearchCriteriaAND; |
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186 iIsBooleanCondition = ETrue; |
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187 RPointerArray<CSearchCondition> conditions; |
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188 (static_cast<const CSearchBooleanCondition*>( &aCondition ) )-> |
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189 GetConditions( conditions,iClause ); |
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190 |
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191 for ( TInt i = 0; i < conditions.Count() ; i++ ) |
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192 { |
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193 SetSingleConditionDataL( |
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194 *(static_cast<const CSearchSingleCondition*>( conditions[i] ) ) ); |
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195 } |
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196 iCount = iSearchKeywords16->Count(); |
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197 conditions.Reset(); |
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198 conditions.Close(); |
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199 |
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200 SetCriteriaOperator( ); |
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201 } |
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202 break; |
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203 |
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204 default: |
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205 break; |
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206 } |
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207 |
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208 DoUftTo8BitConversionL( *iSearchKeywords16 ); |
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209 } |
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210 |
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211 // ----------------------------------------------------------------------------- |
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212 // CSearchTextSearcher::SearchL() |
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213 // Starts the text search with the previous supplied parameters set |
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214 // by SetParametersL. 16 bit version. |
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215 // ----------------------------------------------------------------------------- |
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216 // |
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217 EXPORT_C void CSearchTextSearcher::SearchL( const TDesC16& aToBeSearchedDes ) |
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218 { |
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219 iKeywordSearchStatusArray.Reset(); |
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220 for ( TInt i = 0 ;i < iCount ; i++ ) |
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221 { |
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222 TKeywordSearchStatus status; |
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223 status.iFound = EFalse; |
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224 status.iFoundAtNthPosition = KErrNotFound; |
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225 iKeywordSearchStatusArray.AppendL( status ); |
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226 } |
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227 |
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228 if ( iHaveParameters ) |
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229 { |
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230 DoStringCompareWithKeywordsL( aToBeSearchedDes,*iSearchKeywords, |
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231 iKeywordSearchStatusArray,iOperator,iCaseSensitive ); |
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232 } |
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233 else |
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234 { |
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235 DoStringCompareWithKeywordsL( aToBeSearchedDes,*iSearchKeywords16, |
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236 iKeywordSearchStatusArray,iOperator,iCaseSensitive ); |
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237 } |
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238 } |
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239 |
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240 |
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241 // ----------------------------------------------------------------------------- |
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242 // CSearchTextSearcher::SearchL() |
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243 // Starts the text search with the previous supplied parameters set by |
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244 // SetParametersL. 8 bit version. |
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245 // ----------------------------------------------------------------------------- |
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246 // |
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247 EXPORT_C void CSearchTextSearcher::SearchL ( const TDesC8& aToBeSearchedDes ) |
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248 { |
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249 DoStringCompareWithKeywordsL( aToBeSearchedDes,*iSearchKeywords8, |
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250 iKeywordSearchStatusArray,iOperator,iCaseSensitive ); |
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251 } |
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252 |
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253 // ----------------------------------------------------------------------------- |
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254 // Set whether searching for the email |
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255 // ----------------------------------------------------------------------------- |
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256 // |
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257 EXPORT_C void CSearchTextSearcher::SearchEmailAddress ( TBool aSearchEmail ) |
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258 { |
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259 iSearchAlgorithm->SearchEmailAddress ( aSearchEmail ); |
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260 } |
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261 |
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262 // ----------------------------------------------------------------------------- |
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263 // Return the search keyword |
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264 // ----------------------------------------------------------------------------- |
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265 // |
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266 EXPORT_C CDesC16ArrayFlat* CSearchTextSearcher::SearchKeyword() |
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267 { |
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268 return iSearchKeywords16; |
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269 } |
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270 |
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271 // ----------------------------------------------------------------------------- |
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272 // CSearchTextSearcher::CSearchTextSearcher() |
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273 // C++ default constructor |
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274 // ----------------------------------------------------------------------------- |
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275 // |
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276 CSearchTextSearcher::CSearchTextSearcher( |
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277 MSearchTextSearcherObserver& aObserver ) |
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278 : iObserver( aObserver ) |
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279 { |
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280 |
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281 } |
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282 |
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283 // ----------------------------------------------------------------------------- |
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284 // CSearchTextSearcher::ConstructL() |
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285 // Symbian 2nd phase construction |
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286 // ----------------------------------------------------------------------------- |
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287 // |
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288 void CSearchTextSearcher::ConstructL() |
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289 { |
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290 iSearchKeywords8 = new(ELeave) CDesC8ArrayFlat( KArrayGranularity ); |
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291 iSearchAlgorithm = CSearchAlgorithm::NewL(); |
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292 iSearchAlgorithm->SearchEmailAddress( ETrue ); |
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293 iHaveParameters = EFalse; |
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294 iSameCondition = EFalse; |
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295 iIsBooleanCondition = EFalse; |
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296 FeatureManager::InitializeLibL(); |
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297 } |
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298 |
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299 // ----------------------------------------------------------------------------- |
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300 // CSearchTextSearcher::DoStringCompareWithKeywords() |
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301 // Compares the to be searched string with the list of keywords, 16 bit version. |
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302 // ----------------------------------------------------------------------------- |
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303 // |
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304 TBool CSearchTextSearcher::DoStringCompareWithKeywordsL ( |
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305 const TDesC& aToBeSearchedDes, |
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306 const CDesC16Array& aKeywords, |
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307 RArray<TKeywordSearchStatus>& aKeywordSearchStatusArray, |
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308 CSearchTextSearcher::TSearchCriteriaOperator aOperator, |
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309 TBool aCaseSensitive ) |
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310 { |
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311 iSearchAlgorithm->SearchL( aToBeSearchedDes,aKeywords, |
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312 aKeywordSearchStatusArray, |
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313 aOperator, |
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314 aCaseSensitive ); |
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315 if ( aKeywordSearchStatusArray.Count() >= 0 ) |
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316 { |
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317 if ( iIsBooleanCondition ) |
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318 { |
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319 CheckForBooleanClausesL( aKeywordSearchStatusArray ); |
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320 } |
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321 else |
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322 { |
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323 if ( !aKeywordSearchStatusArray[0].iFound ) |
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324 { |
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325 iObserver.HitL( KErrNotFound ); |
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326 } |
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327 else |
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328 { |
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329 iObserver.HitL( aKeywordSearchStatusArray[0].iFoundAtNthPosition ); |
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330 } |
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331 } |
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332 } |
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333 |
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334 return TRUE; |
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335 } |
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336 |
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337 |
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338 // ----------------------------------------------------------------------------- |
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339 // CSearchTextSearcher::DoStringCompareWithKeywords() |
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340 // Compares the to be searched string with the list of keywords, 8 bit version. |
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341 // ----------------------------------------------------------------------------- |
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342 // |
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343 TBool CSearchTextSearcher::DoStringCompareWithKeywordsL ( |
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344 const TDesC8& aToBeSearchedDes, |
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345 const CDesC8Array& aKeywords, |
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346 RArray<TKeywordSearchStatus>& aKeywordSearchStatusArray, |
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347 CSearchTextSearcher::TSearchCriteriaOperator aOperator, |
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348 TBool aCaseSensitive ) |
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349 { |
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350 iSearchAlgorithm->SearchL( aToBeSearchedDes,aKeywords, |
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351 aKeywordSearchStatusArray,aOperator, aCaseSensitive ); |
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352 if ( aKeywordSearchStatusArray.Count() >= 0 ) |
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353 { |
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354 if ( iIsBooleanCondition ) |
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355 { |
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356 CheckForBooleanClausesL( aKeywordSearchStatusArray ); |
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357 } |
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358 else |
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359 { |
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360 if ( !aKeywordSearchStatusArray[0].iFound ) |
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361 { |
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362 iObserver.HitL( KErrNotFound ); |
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363 } |
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364 else |
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365 { |
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366 iObserver.HitL( aKeywordSearchStatusArray[0].iFoundAtNthPosition ); |
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367 } |
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368 } |
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369 } |
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370 return TRUE; |
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371 } |
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372 |
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373 // ----------------------------------------------------------------------------- |
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374 // CSearchTextSearcher::SetSingleConditionDataL() |
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375 // Sets the singlecondition data for the search. |
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376 // ----------------------------------------------------------------------------- |
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377 // |
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378 void CSearchTextSearcher::SetSingleConditionDataL ( const |
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379 CSearchSingleCondition& aSingleCondition ) |
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380 { |
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381 const CSearchField& field = aSingleCondition.Term(); |
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382 switch ( field.DataType() ) |
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383 { |
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384 case ESearchFieldDataTypeUnknown: |
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385 break; |
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386 case ESearchFieldDataTypeTInt: |
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387 { |
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388 TInt intData; |
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389 field.GetData( intData ); |
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390 HBufC* pbuf = HBufC::NewLC( KNumberDataLength ); |
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391 pbuf->Des().AppendNum( intData ); |
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392 iSearchKeywords16->AppendL( pbuf->Des() ); |
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393 CleanupStack::PopAndDestroy( pbuf ); |
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394 } |
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395 break; |
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396 case ESearchFieldDataTypeTReal: |
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397 { |
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398 TReal realData; |
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399 TRealFormat realFormat( KRealFormatGeneral,KDefaultRealWidth ); |
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400 field.GetData( realData ); |
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401 HBufC* pbuf = HBufC::NewLC( KNumberDataLength ); |
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402 pbuf->Des().AppendNum( realData,realFormat ); |
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403 iSearchKeywords16->AppendL( pbuf->Des() ); |
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404 CleanupStack::PopAndDestroy( pbuf ); |
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405 } |
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406 break; |
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407 case ESearchFieldDataTypeTTime: |
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408 { |
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409 TTime timeData; |
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410 field.GetData( timeData ); |
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411 TDateTime dateTime = timeData.DateTime(); |
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412 |
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413 HBufC* pbuf = HBufC::NewLC( KTimeDataLength) ; |
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414 |
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415 //Set Time and inset into array |
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416 pbuf->Des().AppendNum( dateTime.Hour() ); |
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417 pbuf->Des().Append( KColon ); |
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418 pbuf->Des().AppendNum( dateTime.Minute() ); |
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419 pbuf->Des().Append( KColon ); |
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420 pbuf->Des().AppendNum( dateTime.Second() ); |
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421 iSearchKeywords16->AppendL( pbuf->Des() ); |
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422 CleanupStack::PopAndDestroy( pbuf ); |
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423 } |
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424 break; |
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425 case ESearchFieldDataTypeTDesC: |
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426 { |
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427 TPtrC8 ptr; |
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428 field.GetData( ptr ); |
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429 HBufC* dataDes = HBufC::NewLC( ptr.Length() ); |
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430 TPtr pdata = dataDes->Des(); |
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431 CnvUtfConverter::ConvertToUnicodeFromUtf8( pdata , ptr ); |
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432 |
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433 if ( FeatureManager::FeatureSupported( KFeatureIdJapanese ) || |
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434 FeatureManager::FeatureSupported( KFeatureIdChinese ) || |
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435 FeatureManager::FeatureSupported( KFeatureIdThai ) ) |
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436 { |
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437 HBufC* tempBuffer = HBufC::NewLC( ptr.Length() + 1); |
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438 TPtr pDataTemp = tempBuffer->Des(); |
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439 _LIT(KStar, "*"); |
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440 pDataTemp.Zero(); |
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441 pDataTemp.Append(KStar); |
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442 pDataTemp.Append(pdata); |
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443 |
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444 iSearchKeywords16->AppendL( pDataTemp ); |
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445 CleanupStack::PopAndDestroy( tempBuffer ); |
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446 } |
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447 else |
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448 { |
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449 iSearchKeywords16->AppendL( pdata ); |
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450 } |
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451 |
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452 CleanupStack::PopAndDestroy( dataDes ); |
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453 } |
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454 break; |
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455 case ESearchFieldDataTypeCustom: |
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456 break; |
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457 default: |
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458 break; |
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459 } |
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460 } |
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461 |
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462 |
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463 // ----------------------------------------------------------------------------- |
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464 // CSearchTextSearcher::DoUftTo8BitConvertionL() |
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465 // 16 - 8 bit conversion |
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466 // ----------------------------------------------------------------------------- |
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467 // |
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468 void CSearchTextSearcher::DoUftTo8BitConversionL ( const MDesCArray& aKeywords ) |
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469 { |
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470 for ( TInt i = 0 ;i < aKeywords.MdcaCount() ; i++ ) |
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471 { |
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472 HBufC8* pBuf = HBufC8::NewLC( aKeywords.MdcaPoint( i ).Length() ); |
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473 TPtr8 ptr8 = pBuf->Des(); |
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474 CnvUtfConverter::ConvertFromUnicodeToUtf8( ptr8 ,aKeywords.MdcaPoint( i ) ); |
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475 iSearchKeywords8->AppendL( ptr8 ); |
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476 CleanupStack::PopAndDestroy( pBuf ); |
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477 } |
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478 } |
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479 |
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480 |
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481 // ----------------------------------------------------------------------------- |
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482 // CSearchTextSearcher::SetCriteriaOperator() |
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483 // ----------------------------------------------------------------------------- |
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484 // |
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485 void CSearchTextSearcher::SetCriteriaOperator() |
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486 { |
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487 |
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488 RArray<CSearchBooleanCondition::TBooleanClause>& clause = iClause; |
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489 |
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490 TInt condition = iBooleanClause = clause[0]; // take first clause out |
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491 |
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492 TInt nextclause= 0; |
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493 for ( TInt i = 0 ;i < clause.Count() ; i++ ) |
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494 { |
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495 if ( i>0 ) |
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496 { |
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497 nextclause = clause[i]; |
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498 condition ^=nextclause; //check if all are |
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499 //the same clause category ( ANDs or ORs ) |
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500 if ( condition ) |
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501 { |
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502 iIntermediateClause = clause[i]; |
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503 break; |
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504 } |
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505 } |
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506 } |
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507 if ( !condition ) // iSameCondition is initially set to FALSE |
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508 { |
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509 iSameCondition = TRUE; |
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510 } |
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511 |
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512 } |
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513 |
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514 // ----------------------------------------------------------------------------- |
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515 // CSearchTextSearcher::CheckForBooleanClausesL() |
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516 // Compares the to be searched string with the list of keywords, 8 bit version. |
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517 // ----------------------------------------------------------------------------- |
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518 // |
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519 void CSearchTextSearcher::CheckForBooleanClausesL( RArray<TKeywordSearchStatus>& |
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520 aKeywordSearchStatusArray ) |
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521 { |
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522 |
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523 TBool ifNoneFound = ETrue; |
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524 TInt recordFirstPos = 0; |
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525 |
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526 for ( TInt i = 0 ; i < iCount && i < aKeywordSearchStatusArray.Count() ; i++ ) |
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527 { |
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528 if ( iBooleanClause == CSearchBooleanCondition::EBooleanMust |
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529 && iSameCondition ) |
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530 { |
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531 if ( !aKeywordSearchStatusArray[i].iFound ) |
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532 { |
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533 ifNoneFound = ETrue; |
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534 break; |
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535 } |
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536 else |
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537 { |
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538 ifNoneFound = EFalse; |
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539 if ( !recordFirstPos ) |
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540 { |
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541 recordFirstPos = |
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542 aKeywordSearchStatusArray[i].iFoundAtNthPosition; |
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543 } |
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544 //iObserver.HitL( |
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545 // aKeywordSearchStatusArray[i].iFoundAtNthPosition ); |
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546 } |
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547 } |
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548 else if ( iBooleanClause == CSearchBooleanCondition::EBooleanShould |
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549 && iSameCondition ) |
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550 { |
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551 if ( !aKeywordSearchStatusArray[i].iFound ) |
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552 { |
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553 //Do nothing ,just pass on |
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554 } |
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555 else |
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556 { |
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557 ifNoneFound = EFalse; |
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558 iObserver.HitL( |
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559 aKeywordSearchStatusArray[i].iFoundAtNthPosition ); |
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560 } |
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561 } |
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562 else //if( !iSameCondition ) |
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563 { |
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564 if ( !aKeywordSearchStatusArray[i].iFound ) |
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565 { |
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566 if ( iBooleanClause == CSearchBooleanCondition::EBooleanMust ) |
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567 { |
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568 ifNoneFound = ETrue; |
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569 //break; |
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570 } |
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571 else if( iBooleanClause == |
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572 CSearchBooleanCondition::EBooleanShould |
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573 && iIntermediateClause == |
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574 CSearchBooleanCondition::EBooleanMust ) |
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575 { |
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576 ifNoneFound = ETrue; |
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577 //break; |
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578 } |
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579 } |
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580 else |
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581 { |
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582 ifNoneFound = EFalse; |
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583 iObserver.HitL( aKeywordSearchStatusArray[i].iFoundAtNthPosition ); |
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584 } |
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585 } |
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586 } |
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587 |
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588 if ( !ifNoneFound && iBooleanClause == |
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589 CSearchBooleanCondition::EBooleanMust ) |
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590 { |
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591 iObserver.HitL( recordFirstPos ); |
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592 } |
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593 } |