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1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include "msvcacheentry.h" |
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17 |
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18 /** |
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19 * NewLC() |
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20 * @param None. |
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21 * @return CMsvCacheEntry* : a handle to a new cache entry. |
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22 * |
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23 * |
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24 */ |
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25 CMsvCacheEntry* CMsvCacheEntry::NewLC() |
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26 { |
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27 CMsvCacheEntry* self = new(ELeave) CMsvCacheEntry(); |
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28 CleanupStack::PushL(self); |
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29 self->ConstructL(); |
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30 return self; |
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31 } |
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32 |
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33 |
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34 |
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35 /** |
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36 * NewL() |
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37 * @param None. |
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38 * @return CMsvCacheEntry* : a handle to a new cache entry. |
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39 * |
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40 * |
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41 */ |
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42 CMsvCacheEntry* CMsvCacheEntry::NewL() |
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43 { |
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44 CMsvCacheEntry* self = NewLC(); |
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45 CleanupStack::Pop(self); |
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46 return self; |
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47 } |
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48 |
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49 |
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50 |
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51 /** |
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52 * ConstructL() |
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53 * @param None. |
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54 * @return None. |
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55 * |
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56 * Second phase construction. |
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57 */ |
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58 void CMsvCacheEntry::ConstructL() |
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59 { |
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60 |
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61 } |
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62 |
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63 |
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64 /** |
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65 * CMsvCacheEntry() |
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66 * @param None. |
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67 * @return None. |
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68 * |
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69 * Constructor. |
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70 */ |
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71 CMsvCacheEntry::CMsvCacheEntry() |
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72 { |
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73 } |
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74 |
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75 |
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76 /** |
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77 * ~CMsvCacheEntry() |
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78 * @param None. |
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79 * @return None. |
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80 * |
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81 * Destructor. |
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82 */ |
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83 CMsvCacheEntry::~CMsvCacheEntry() |
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84 { |
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85 delete iDescriptionBuffer; |
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86 delete iDetailsBuffer; |
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87 |
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88 if(iChildIdArray) |
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89 { |
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90 iChildIdArray->Close(); |
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91 delete iChildIdArray; |
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92 iChildIdArray = NULL; |
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93 } |
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94 } |
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95 |
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96 |
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97 /** |
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98 * ResetEntry() |
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99 * @param None. |
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100 * @return None. |
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101 * |
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102 * The function resets a cache entry to zero/default values. |
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103 */ |
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104 void CMsvCacheEntry::ResetEntry() |
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105 { |
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106 delete iDescriptionBuffer; |
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107 iDescriptionBuffer = NULL; |
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108 |
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109 delete iDetailsBuffer; |
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110 iDetailsBuffer = NULL; |
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111 |
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112 iEntry = TMsvEntry(); |
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113 iFlags = EMsvServerEntryClearFlag; |
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114 |
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115 iStoreReaderCount = 0; |
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116 |
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117 if(iChildIdArray) |
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118 { |
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119 iChildIdArray->Close(); |
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120 delete iChildIdArray; |
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121 iChildIdArray = NULL; |
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122 } |
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123 } |
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124 |
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125 |
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126 |
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127 /** |
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128 * SetEntryL() |
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129 * @param TMsvEntry& : the TMsvEntry with the details to be copied to the cache entry. |
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130 * @return None. |
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131 * |
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132 * The function sets the TMsvEntry, iDescription and iDetails fields of the cache entry |
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133 * to that of the passed entry. |
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134 */ |
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135 void CMsvCacheEntry::SetEntryL(TMsvEntry& aEntry) |
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136 { |
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137 iEntry = aEntry; |
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138 if(!iDescriptionBuffer) |
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139 { |
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140 iDescriptionBuffer = aEntry.iDescription.AllocL(); |
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141 } |
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142 else if (aEntry.iDescription.Length() > iDescriptionBuffer->Des().MaxLength()) |
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143 { |
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144 iDescriptionBuffer = iDescriptionBuffer->ReAllocL(aEntry.iDescription.Length()); |
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145 } |
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146 |
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147 |
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148 if(!iDetailsBuffer) |
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149 { |
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150 iDetailsBuffer = aEntry.iDetails.AllocL(); |
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151 } |
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152 else if (aEntry.iDetails.Length() > iDetailsBuffer->Des().MaxLength()) |
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153 { |
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154 iDetailsBuffer = iDetailsBuffer->ReAllocL(aEntry.iDetails.Length()); |
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155 |
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156 } |
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157 |
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158 *iDescriptionBuffer = aEntry.iDescription; |
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159 *iDetailsBuffer = aEntry.iDetails; |
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160 |
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161 iEntry.iDescription.Set(*iDescriptionBuffer); |
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162 iEntry.iDetails.Set(*iDetailsBuffer); |
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163 } |
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164 |
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165 |
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166 /* |
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167 * DupNDestroyL() |
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168 * |
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169 */ |
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170 void CMsvCacheEntry::DupNDestroyL(CMsvCacheEntry*& aEntry) |
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171 { |
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172 SetEntryL(aEntry->Entry()); |
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173 iFlags = aEntry->iFlags; |
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174 iStoreReaderCount = aEntry->iStoreReaderCount; |
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175 iLastChange = aEntry->iLastChange; |
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176 iCreated = aEntry->iCreated; |
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177 iOwnerId = aEntry->iOwnerId; |
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178 iChildIdArray = aEntry->iChildIdArray; |
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179 aEntry->iChildIdArray = NULL; |
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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 /** |
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186 * LockEntry() |
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187 * @param None. |
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188 * @return TInt : KErrNone on success, KErrLocked if the entry is already locked. |
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189 * |
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190 * The function locks the cache entry if not already locked. |
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191 */ |
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192 TInt CMsvCacheEntry::LockEntry() |
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193 { |
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194 if (IsEntryLocked()) |
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195 { |
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196 return KErrLocked; |
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197 } |
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198 |
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199 iFlags |= EMsvServerEntryLockFlag; |
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200 return KErrNone; |
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201 } |
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202 |
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203 |
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204 /** |
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205 * LockStore() |
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206 * @param None. |
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207 * @return TInt : KErrNone on success, KErrLocked if the store entry is already locked. |
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208 * |
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209 * The function locks the store entry if not already locked. |
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210 */ |
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211 TInt CMsvCacheEntry::LockStore() |
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212 { |
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213 if (IsStoreLocked()) |
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214 { |
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215 return KErrLocked; |
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216 } |
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217 |
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218 iFlags |= EMsvServerEntryStoreLockFlag; |
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219 return KErrNone; |
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220 } |
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221 |
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222 |
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223 |
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224 /** |
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225 * LockEntryAndStore() |
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226 * @param None. |
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227 * @return TInt : KErrNone on success, KErrLocked if the store and cache entry is already locked. |
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228 * |
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229 * The function locks the store and cache entry if not already locked. |
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230 */ |
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231 TInt CMsvCacheEntry::LockEntryAndStore() |
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232 { |
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233 if (IsEntryOrStoreLocked()) |
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234 { |
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235 return KErrLocked; |
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236 } |
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237 |
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238 iFlags |= (EMsvServerEntryStoreLockFlag | EMsvServerEntryLockFlag); |
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239 return KErrNone; |
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240 } |
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241 |
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242 |
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243 |
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244 /** |
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245 * CopyEntryL() |
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246 * @param const TMsvEntry& : the entry to be changed to. |
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247 * @param TBool& : output parameter set to ETrue if any private details (iDesciption |
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248 * and iDetails) have been changed. |
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249 * @return None. |
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250 * |
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251 * The function copies details from the passed TMsvEntry to the cache entry's TMsvEntry. |
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252 * It reallocates buffer sizes if there is difference between them. |
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253 */ |
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254 void CMsvCacheEntry::CopyEntryL(const TMsvEntry& aEntry, TBool& aChangedPrivateInfo) |
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255 { |
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256 TBool changeDes = (aEntry.iDescription!=*iDescriptionBuffer); |
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257 TBool changeDet = (aEntry.iDetails!=*iDetailsBuffer); |
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258 |
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259 aChangedPrivateInfo = changeDes || changeDet; |
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260 |
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261 //Only increase the buffer size, not shrink so as to allow rollback |
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262 TBool isMemoryAllocationDone = EFalse; |
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263 HBufC* bkpDescriptionBuffer = iDescriptionBuffer; |
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264 if (changeDes && aEntry.iDescription.Length() > iDescriptionBuffer->Des().MaxLength()) |
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265 { |
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266 iDescriptionBuffer = HBufC::NewL(aEntry.iDescription.Length()); |
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267 isMemoryAllocationDone = ETrue; |
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268 } |
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269 |
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270 if (changeDet && aEntry.iDetails.Length() > iDetailsBuffer->Des().MaxLength()) |
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271 { |
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272 TRAPD(err, iDetailsBuffer = iDetailsBuffer->ReAllocL(aEntry.iDetails.Length())); |
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273 if(err) |
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274 { |
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275 if(isMemoryAllocationDone) |
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276 { |
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277 delete iDescriptionBuffer; |
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278 iDescriptionBuffer = bkpDescriptionBuffer; |
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279 } |
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280 User::Leave(err); |
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281 } |
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282 } |
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283 |
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284 if(isMemoryAllocationDone) |
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285 { |
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286 delete bkpDescriptionBuffer; |
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287 } |
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288 //Copy the data without leaving |
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289 if (changeDes) |
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290 { |
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291 *iDescriptionBuffer = aEntry.iDescription; |
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292 } |
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293 |
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294 if (changeDet) |
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295 { |
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296 *iDetailsBuffer = aEntry.iDetails; |
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297 } |
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298 |
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299 iEntry=aEntry; |
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300 iEntry.iDescription.Set(*iDescriptionBuffer); |
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301 iEntry.iDetails.Set(*iDetailsBuffer); |
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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 * RollBackCopyEntry() |
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308 * @param const TMsvEntry& : the entry to be changed to. |
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309 * @return None. |
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310 * |
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311 * |
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312 */ |
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313 void CMsvCacheEntry::RollBackCopyEntry(const TMsvEntry& aEntry) |
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314 { |
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315 __ASSERT_DEBUG(iDescriptionBuffer->Des().MaxLength() >= aEntry.iDescription.Length(), PanicServer(EMsvBadRollBackCopy1)); |
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316 __ASSERT_DEBUG(iDetailsBuffer->Des().MaxLength() >= aEntry.iDetails.Length(), PanicServer(EMsvBadRollBackCopy2)); |
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317 |
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318 Mem::Copy(&iEntry, &aEntry, sizeof(TMsvEntry)); |
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319 |
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320 *iDescriptionBuffer = aEntry.iDescription; |
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321 *iDetailsBuffer = aEntry.iDetails; |
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322 |
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323 iEntry.iDescription.Set(*iDescriptionBuffer); |
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324 iEntry.iDetails.Set(*iDetailsBuffer); |
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325 } |