1 /* |
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2 * Copyright (c) 2008 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: Container for individual key-value pairs |
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15 * |
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16 */ |
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17 |
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18 // INCLUDE FILES |
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19 #include "cvimpstsettingskeyvaluepairs.h" |
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20 #include "cvimpstsettingskeyvaluepair.h" |
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21 #include "cvimpstsettingslookupkeyvaluepair.h" |
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22 |
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23 #include <e32std.h> |
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24 |
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25 //CONSTANTS |
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26 const TInt KKeyValuePairGranurality = 5; |
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27 |
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28 |
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29 // LOCAL CONSTANTS AND MACROS |
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30 #define KEYWORD_ORDER TLinearOrder< CVIMPSTSettingsKeyValuePair > ( CompareKeys ) |
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31 |
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32 |
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33 // ============================ LOCAL FUNCTIONS =============================== |
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34 |
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35 // ----------------------------------------------------------------------------- |
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36 // CompareKeys() |
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37 // Comparison function for TLinearOrder |
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38 // |
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39 // @param aLhs The left hand side in comparison. |
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40 // @param aRhs The right hand side in comparison. |
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41 // @return Result from compare |
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42 // ----------------------------------------------------------------------------- |
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43 // |
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44 TInt CompareKeys( const CVIMPSTSettingsKeyValuePair& aLhs, const CVIMPSTSettingsKeyValuePair& aRhs ) |
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45 { |
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46 return aLhs.Key().Compare( aRhs.Key() ); |
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47 } |
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48 |
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49 // ----------------------------------------------------------------------------- |
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50 // SetValueToPairs() |
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51 // Templated algorithm to set or update new value to list of key values. |
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52 // |
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53 // @param aPairs The list of key-value pairs. |
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54 // @param aLookupKey The lookup key to use in searching. |
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55 // @param aKey The key for which to assign the value. |
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56 // @param aValue Templated data type to assign to key. |
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57 // @return Error code. |
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58 // ----------------------------------------------------------------------------- |
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59 // |
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60 template< typename T > |
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61 TInt SetValueToPairs( RPointerArray< CVIMPSTSettingsKeyValuePair >& aPairs, |
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62 CVIMPSTSettingsLookupKeyValuePair& aLookupKey, |
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63 const TDesC& aKey, |
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64 const T& aValue ) |
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65 { |
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66 aLookupKey.SetLookupKey( aKey ); |
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67 |
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68 |
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69 TInt err = KErrNone; |
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70 TInt index = aPairs.FindInOrder( &aLookupKey, KEYWORD_ORDER ); |
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71 |
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72 if( index != KErrNotFound ) |
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73 { |
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74 //Update existing |
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75 err = aPairs[ index ]->SetValue( aValue ); |
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76 } |
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77 |
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78 else |
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79 { |
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80 //create new |
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81 CVIMPSTSettingsKeyValuePair* newPair = CVIMPSTSettingsKeyValuePair::New( aKey ); |
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82 if( !newPair ) |
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83 { |
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84 err = KErrNoMemory; |
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85 } |
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86 else |
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87 { |
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88 //Insert new |
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89 |
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90 err = newPair->SetValue( aValue ); |
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91 if( err == KErrNone ) |
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92 { |
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93 err = aPairs.InsertInOrderAllowRepeats( newPair, KEYWORD_ORDER ); |
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94 } |
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95 |
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96 if( err != KErrNone ) |
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97 { |
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98 delete newPair; |
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99 } |
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100 |
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101 } |
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102 } |
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103 aLookupKey.ResetLookupKey(); |
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104 return err; |
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105 } |
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106 |
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107 |
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108 |
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109 |
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110 // ----------------------------------------------------------------------------- |
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111 // GetValueFromPairs() |
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112 // |
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113 // Templated algorithm to get value from list of key values. |
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114 // |
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115 // @param aPairs The list of key-value pairs. |
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116 // @param aLookupKey The lookup key to use in searching. |
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117 // @param aKey The key for which to get the value. |
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118 // @param aValue Templated data type to get. |
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119 // @return Error code. |
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120 // ----------------------------------------------------------------------------- |
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121 // |
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122 template< typename T > |
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123 TInt GetValueFromPairs( const RPointerArray< CVIMPSTSettingsKeyValuePair >& aPairs, |
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124 CVIMPSTSettingsLookupKeyValuePair& aLookupKey, |
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125 const TDesC& aKey, |
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126 T& aValue ) |
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127 { |
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128 aLookupKey.SetLookupKey( aKey ); |
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129 |
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130 |
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131 TInt index = aPairs.FindInOrder( &aLookupKey, KEYWORD_ORDER ); |
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132 if( index != KErrNotFound ) |
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133 { |
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134 index = aPairs[ index ]->GetValue( aValue ); |
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135 } |
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136 |
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137 |
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138 aLookupKey.ResetLookupKey(); |
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139 return index; |
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140 } |
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141 |
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142 // ================= MEMBER FUNCTIONS ======================= |
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143 |
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144 // ----------------------------------------------------------------------------- |
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145 // CVIMPSTUiSAPKeyValuePairs::NewL() |
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146 // Two-phased constructor. |
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147 // ----------------------------------------------------------------------------- |
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148 // |
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149 CVIMPSTSettingsKeyValuePairs* CVIMPSTSettingsKeyValuePairs::NewL() |
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150 { |
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151 CVIMPSTSettingsKeyValuePairs* self = new (ELeave) CVIMPSTSettingsKeyValuePairs; |
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152 CleanupStack::PushL( self ); |
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153 self->ConstructL(); |
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154 CleanupStack::Pop(); //self |
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155 return self; |
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156 } |
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157 |
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158 |
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159 |
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160 // ----------------------------------------------------------------------------- |
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161 // CVIMPSTSettingsKeyValuePairs::~CVIMPSTSettingsKeyValuePairs() |
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162 // Destructor |
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163 // ----------------------------------------------------------------------------- |
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164 // |
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165 CVIMPSTSettingsKeyValuePairs::~CVIMPSTSettingsKeyValuePairs() |
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166 { |
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167 iPairs.ResetAndDestroy(); |
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168 delete iLookupKey; |
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169 } |
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170 |
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171 |
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172 // ----------------------------------------------------------------------------- |
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173 // CVIMPSTSettingsKeyValuePairs::CVIMPSTSettingsKeyValuePairs() |
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174 // C++ default constructor can NOT contain any code, that |
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175 // might leave. |
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176 // ----------------------------------------------------------------------------- |
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177 // |
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178 CVIMPSTSettingsKeyValuePairs::CVIMPSTSettingsKeyValuePairs() |
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179 : iPairs( KKeyValuePairGranurality ) |
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180 { |
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181 } |
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182 |
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183 |
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184 // ----------------------------------------------------------------------------- |
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185 // CVIMPSTSettingsKeyValuePairs::ConstructL) |
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186 // ----------------------------------------------------------------------------- |
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187 // |
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188 void CVIMPSTSettingsKeyValuePairs::ConstructL() |
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189 { |
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190 iLookupKey = CVIMPSTSettingsLookupKeyValuePair::NewL(); |
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191 } |
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192 |
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193 // ----------------------------------------------------------------------------- |
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194 // CVIMPSTSettingsKeyValuePairs::SetValueDesC16() |
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195 // ----------------------------------------------------------------------------- |
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196 // |
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197 TInt CVIMPSTSettingsKeyValuePairs::SetValueDesC16( const TDesC& aKey, const TDesC16& aValue ) |
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198 { |
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199 return SetValueToPairs( iPairs, *iLookupKey, aKey, aValue ); |
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200 } |
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201 |
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202 // ----------------------------------------------------------------------------- |
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203 // CVIMPSTSettingsKeyValuePairs::GetValueDesC16() |
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204 // ----------------------------------------------------------------------------- |
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205 // |
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206 TInt CVIMPSTSettingsKeyValuePairs::GetValueDesC16( const TDesC& aKey, TPtrC16& aValue ) |
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207 { |
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208 return GetValueFromPairs( iPairs, *iLookupKey, aKey, aValue ); |
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209 } |
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210 |
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211 |
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212 // ----------------------------------------------------------------------------- |
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213 // CVIMPSTSettingsKeyValuePairs::DeletePair() |
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214 // ----------------------------------------------------------------------------- |
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215 // |
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216 TInt CVIMPSTSettingsKeyValuePairs::DeletePair( const TDesC& aKey ) |
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217 { |
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218 iLookupKey->SetLookupKey( aKey ); |
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219 |
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220 TInt index = iPairs.FindInOrder( iLookupKey, KEYWORD_ORDER ); |
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221 if( index != KErrNotFound ) |
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222 { |
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223 delete iPairs[ index ]; |
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224 iPairs.Remove( index ); |
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225 index = KErrNone; |
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226 } |
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227 |
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228 iLookupKey->ResetLookupKey(); |
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229 |
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230 return index; |
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231 } |
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232 |
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233 |
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234 // ----------------------------------------------------------------------------- |
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235 // CVIMPSTSettingsKeyValuePairs::Pairs() |
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236 // ----------------------------------------------------------------------------- |
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237 // |
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238 RPointerArray< CVIMPSTSettingsKeyValuePair >& CVIMPSTSettingsKeyValuePairs::Pairs() |
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239 { |
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240 return iPairs; |
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241 } |
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242 |
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243 // End of File |
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244 |
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