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1 /* |
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2 * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Asynchronous query active object |
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15 * |
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16 */ |
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17 |
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18 |
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19 // INCLUDE FILES |
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20 #include "mdeasynchronousfindao.h" |
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21 #include "mdequeryimpl.h" |
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22 |
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23 #include "mdeenginesession.h" |
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24 #include "mdelogiccondition.h" |
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25 #include "mdesessionimpl.h" |
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26 #include "mdequerycriteriaserialization.h" |
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27 #include "mdeinstanceitem.h" |
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28 |
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29 // ========================= MEMBER FUNCTIONS ================================== |
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30 |
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31 CMdEAsynchronousFindAO* CMdEAsynchronousFindAO::NewL( CMdEQuery& aQuery, |
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32 CMdESessionImpl& aSessionImpl, RMdEEngineSession& aSession ) |
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33 { |
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34 CMdEAsynchronousFindAO* self = CMdEAsynchronousFindAO::NewLC( aQuery, aSessionImpl, aSession ); |
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35 CleanupStack::Pop( self ); |
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36 return self; |
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37 } |
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38 |
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39 CMdEAsynchronousFindAO* CMdEAsynchronousFindAO::NewLC( CMdEQuery& aQuery, |
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40 CMdESessionImpl& aSessionImpl, RMdEEngineSession& aSession ) |
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41 { |
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42 CMdEAsynchronousFindAO* self = |
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43 new ( ELeave ) CMdEAsynchronousFindAO( aQuery, aSessionImpl, aSession ); |
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44 CleanupStack::PushL( self ); |
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45 self->ConstructL(); |
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46 return self; |
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47 } |
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48 |
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49 void CMdEAsynchronousFindAO::ConstructL() |
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50 { |
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51 } |
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52 |
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53 CMdEAsynchronousFindAO::CMdEAsynchronousFindAO( CMdEQuery& aQuery, |
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54 CMdESessionImpl& aSessionImpl, RMdEEngineSession& aSession ) |
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55 : CActive( CActive::EPriorityStandard ) |
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56 , iQuery( aQuery ) |
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57 , iSessionImpl ( aSessionImpl ) |
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58 , iSession( aSession ) |
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59 , iCountResult( 0 ) |
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60 , iConditionBuffer( NULL ) |
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61 , iDistinctResults( NULL ) |
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62 { |
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63 CActiveScheduler::Add( this ); |
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64 } |
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65 |
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66 |
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67 void CMdEAsynchronousFindAO::DoFindL( TUint aMaxCount, TUint aNotifyCount ) |
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68 { |
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69 CMdEObjectDef* objectDef = NULL; |
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70 |
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71 RPointerArray<CMdEObjectDef>* objectDefs = NULL; |
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72 |
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73 RPointerArray<CMdEPropertyDef>* propertyFilter = NULL; |
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74 |
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75 // get query's internal optimization flags |
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76 TUint32 queryOptimizationFlags = 0; |
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77 iQuery.Conditions().InternalQueryOptimizationFlags(queryOptimizationFlags); |
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78 |
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79 TQueryResultMode resultMode = iQuery.ResultMode(); |
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80 |
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81 // set property filter and distinct |
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82 if( EQueryTypeObject == iQuery.Type() ) |
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83 { |
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84 CMdEObjectQuery& objectQuery = (CMdEObjectQuery&)iQuery; |
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85 |
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86 objectDef = &objectQuery.ObjectDef(); |
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87 |
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88 objectDefs = objectQuery.ObjectDefs(); |
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89 |
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90 // if result mode is objects with freetext |
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91 // change it to normal items for server |
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92 // (freetext including to results is in query optimization flags) |
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93 if( EQueryResultModeObjectWithFreetexts == resultMode ) |
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94 { |
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95 resultMode = EQueryResultModeItem; |
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96 queryOptimizationFlags |= EContainsFreetextCondition; |
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97 } |
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98 |
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99 if( EQueryResultModeItem == resultMode || |
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100 EQueryResultModeDistinctValues == resultMode ) |
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101 { |
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102 if( objectQuery.PropertyFilter().Count() > 0 ) |
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103 { |
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104 propertyFilter = &objectQuery.PropertyFilter(); |
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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 iConditionBuffer = |
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110 CMdEQueryCriteriaSerialization::NewLC( resultMode, iQuery.Type(), |
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111 iQuery.NamespaceDef(), |
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112 objectDef, |
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113 objectDefs, |
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114 aMaxCount, |
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115 0, // 0 offset because it's not used currently |
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116 queryOptimizationFlags, |
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117 iQuery.Conditions(), iQuery.OrderRules(), |
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118 propertyFilter ); |
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119 CleanupStack::Pop(); |
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120 iSession.DoFindAsync( |
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121 iQuery.GetQueryId(), |
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122 *iConditionBuffer, |
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123 &iResultSize, |
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124 iStatus, |
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125 aNotifyCount ); |
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126 |
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127 SetActive(); |
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128 } |
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129 |
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130 |
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131 CMdEAsynchronousFindAO::~CMdEAsynchronousFindAO() |
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132 { |
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133 Cancel(); // Causes call to DoCancel() |
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134 |
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135 delete iDistinctResults; |
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136 |
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137 delete iConditionBuffer; |
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138 |
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139 iResultList.ResetAndDestroy(); |
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140 iResultList.Close(); |
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141 |
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142 iIdResultList.Close(); |
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143 } |
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144 |
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145 |
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146 void CMdEAsynchronousFindAO::RunL() |
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147 { |
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148 // condition buffer can be safely removed now |
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149 if( iConditionBuffer ) |
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150 { |
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151 delete iConditionBuffer; |
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152 iConditionBuffer = NULL; |
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153 } |
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154 |
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155 // check if client side query is in error state (for example cancelled) |
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156 if( iQuery.State() == CMdEQuery::EStateError ) |
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157 { |
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158 TRAP_IGNORE( iSession.DoFindCancelL( &iQuery ) ); |
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159 return; |
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160 } |
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161 |
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162 const TInt status = iStatus.Int(); |
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163 switch ( status ) |
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164 { |
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165 case EAsyncFindSetReady: |
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166 case EAsyncFindComplete: |
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167 { |
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168 // fetch results from server |
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169 CMdCSerializationBuffer* results = CMdCSerializationBuffer::NewLC(iResultSize()); |
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170 |
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171 iSession.DoGetDataL( &iQuery, results, status ); |
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172 |
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173 const TQueryResultMode resultMode = iQuery.ResultMode(); |
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174 |
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175 if ( resultMode == EQueryResultModeItem || resultMode == EQueryResultModeObjectWithFreetexts ) |
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176 { |
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177 iSessionImpl.DeserializeQueryResultL( *results, iResultList ); |
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178 } |
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179 else if ( resultMode == EQueryResultModeId ) |
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180 { |
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181 iSessionImpl.GetItemIdL( results, iIdResultList ); |
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182 } |
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183 else if ( resultMode == EQueryResultModeCount ) |
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184 { |
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185 iSessionImpl.GetCountL( results, iCountResult ); |
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186 } |
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187 else if ( resultMode == EQueryResultModeDistinctValues ) |
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188 { |
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189 if( iDistinctResults ) |
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190 { |
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191 delete iDistinctResults; |
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192 iDistinctResults = NULL; |
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193 } |
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194 |
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195 iDistinctResults = new (ELeave) CDesCArrayFlat( 16 ); |
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196 iSessionImpl.GetDistinctValuesL( *results, *iDistinctResults ); |
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197 } |
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198 |
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199 CleanupStack::PopAndDestroy( results ); |
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200 |
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201 // notify the results |
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202 DoNotifyL( ETrue, status ); |
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203 |
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204 if ( status == EAsyncFindSetReady ) |
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205 { |
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206 iResultSize = 0; |
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207 |
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208 // continue find, fetch next set |
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209 iSession.DoFindContinue( &iQuery, &iResultSize, iStatus ); |
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210 SetActive(); |
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211 } |
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212 } |
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213 break; |
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214 |
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215 default: |
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216 { |
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217 // notify of an error |
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218 DoNotifyL( EFalse, status ); |
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219 } |
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220 break; |
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221 } |
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222 } |
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223 |
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224 TInt CMdEAsynchronousFindAO::RunError(TInt aError) |
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225 { |
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226 // in error cases make sure that results are cleaned |
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227 iResultList.Reset(); |
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228 |
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229 iIdResultList.Reset(); |
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230 |
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231 delete iDistinctResults; |
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232 iDistinctResults = NULL; |
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233 |
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234 if( aError == KErrServerTerminated ) |
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235 { |
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236 iSessionImpl.NotifyError( aError ); |
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237 } |
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238 else |
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239 { |
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240 // cancel query if it's still running |
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241 if( iQuery.State() != EAsyncFindComplete ) |
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242 { |
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243 TRAP_IGNORE( iSession.DoFindCancelL( &iQuery ) ); |
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244 } |
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245 } |
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246 |
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247 const TQueryType mode = iQuery.Type(); |
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248 |
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249 if ( mode == EQueryTypeObject ) |
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250 { |
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251 CMdEObjectQueryImpl& qi = (CMdEObjectQueryImpl&)iQuery; |
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252 qi.DoNotifyCompleted( aError ); |
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253 } |
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254 else if ( mode == EQueryTypeRelation ) |
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255 { |
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256 CMdERelationQueryImpl& qi = (CMdERelationQueryImpl&)iQuery; |
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257 qi.DoNotifyCompleted( aError ); |
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258 } |
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259 else if ( mode == EQueryTypeEvent ) |
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260 { |
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261 CMdEEventQueryImpl& qi = (CMdEEventQueryImpl&)iQuery; |
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262 qi.DoNotifyCompleted( aError ); |
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263 } |
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264 |
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265 return KErrNone; |
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266 } |
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267 |
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268 void CMdEAsynchronousFindAO::DoNotifyResultsL( TInt aStatus ) |
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269 { |
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270 // Notify result instances |
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271 if ( ( aStatus == EAsyncFindSetReady || |
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272 aStatus == EAsyncFindComplete ) && |
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273 iResultList.Count() > 0) |
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274 { |
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275 const TQueryType mode = iQuery.Type(); |
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276 |
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277 if ( mode == EQueryTypeObject ) |
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278 { |
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279 CMdEObjectQueryImpl& qi = (CMdEObjectQueryImpl&)iQuery; |
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280 qi.DoNotifyResultsL( iResultList ); |
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281 } |
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282 else if ( mode == EQueryTypeRelation ) |
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283 { |
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284 CMdERelationQueryImpl& qi = (CMdERelationQueryImpl&)iQuery; |
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285 qi.DoNotifyResultsL( iResultList ); |
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286 } |
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287 else if ( mode == EQueryTypeEvent ) |
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288 { |
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289 CMdEEventQueryImpl& qi = (CMdEEventQueryImpl&)iQuery; |
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290 qi.DoNotifyResultsL( iResultList ); |
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291 } |
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292 |
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293 // get rid of local results list |
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294 iResultList.Reset(); |
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295 } |
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296 // Notify result ids |
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297 else if ( ( aStatus == EAsyncFindSetReady || |
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298 aStatus == EAsyncFindComplete ) && |
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299 iIdResultList.Count() > 0) |
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300 { |
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301 const TQueryType mode = iQuery.Type(); |
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302 |
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303 if ( mode == EQueryTypeObject ) |
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304 { |
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305 CMdEObjectQueryImpl& qi = (CMdEObjectQueryImpl&)iQuery; |
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306 qi.DoNotifyResultsL( iIdResultList ); |
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307 } |
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308 else if ( mode == EQueryTypeRelation ) |
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309 { |
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310 CMdERelationQueryImpl& qi = (CMdERelationQueryImpl&)iQuery; |
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311 qi.DoNotifyResultsL( iIdResultList ); |
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312 } |
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313 else if ( mode == EQueryTypeEvent ) |
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314 { |
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315 CMdEEventQueryImpl& qi = (CMdEEventQueryImpl&)iQuery; |
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316 qi.DoNotifyResultsL( iIdResultList ); |
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317 } |
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318 |
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319 // get rid of local results list |
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320 iIdResultList.Reset(); |
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321 } |
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322 else if ( iQuery.ResultMode() == EQueryResultModeCount ) |
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323 { |
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324 const TQueryType mode = iQuery.Type(); |
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325 |
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326 if ( mode == EQueryTypeObject ) |
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327 { |
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328 CMdEObjectQueryImpl& qi = (CMdEObjectQueryImpl&)iQuery; |
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329 qi.DoNotifyResults( iCountResult ); |
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330 } |
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331 else if ( mode == EQueryTypeRelation ) |
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332 { |
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333 CMdERelationQueryImpl& qi = (CMdERelationQueryImpl&)iQuery; |
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334 qi.DoNotifyResults( iCountResult ); |
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335 } |
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336 else if ( mode == EQueryTypeEvent ) |
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337 { |
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338 CMdEEventQueryImpl& qi = (CMdEEventQueryImpl&)iQuery; |
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339 qi.DoNotifyResults( iCountResult ); |
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340 } |
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341 } |
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342 else if ( ( aStatus == EAsyncFindSetReady || |
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343 aStatus == EAsyncFindComplete ) && |
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344 iDistinctResults && iQuery.ResultMode() == EQueryResultModeDistinctValues ) |
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345 { |
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346 CMdEObjectQueryImpl& qi = (CMdEObjectQueryImpl&)iQuery; |
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347 qi.DoNotifyResultsL( *iDistinctResults ); |
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348 |
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349 delete iDistinctResults; |
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350 iDistinctResults = NULL; |
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351 } |
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352 } |
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353 |
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354 void CMdEAsynchronousFindAO::DoNotifyL( TBool aNewResults, TInt aStatus ) |
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355 { |
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356 if( aNewResults ) |
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357 { |
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358 DoNotifyResultsL( aStatus ); |
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359 } |
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360 |
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361 // Notify complete |
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362 if ( aStatus != EAsyncFindSetReady ) |
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363 { |
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364 const TInt code = ( aStatus == EAsyncFindComplete ? KErrNone : aStatus ); |
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365 |
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366 const TQueryType mode = iQuery.Type(); |
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367 |
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368 if ( mode == EQueryTypeObject ) |
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369 { |
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370 CMdEObjectQueryImpl& qi = (CMdEObjectQueryImpl&)iQuery; |
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371 qi.DoNotifyCompleted( code ); |
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372 } |
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373 else if ( mode == EQueryTypeRelation ) |
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374 { |
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375 CMdERelationQueryImpl& qi = (CMdERelationQueryImpl&)iQuery; |
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376 qi.DoNotifyCompleted( code ); |
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377 } |
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378 else if ( mode == EQueryTypeEvent ) |
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379 { |
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380 CMdEEventQueryImpl& qi = (CMdEEventQueryImpl&)iQuery; |
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381 qi.DoNotifyCompleted( code ); |
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382 } |
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383 } |
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384 |
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385 if( aStatus == KErrServerTerminated ) |
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386 { |
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387 iSessionImpl.NotifyError( aStatus ); |
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388 } |
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389 } |
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390 |
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391 |
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392 void CMdEAsynchronousFindAO::DoCancel() |
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393 { |
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394 TRAP_IGNORE( iSession.DoFindCancelL( &iQuery ) ); |
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395 } |
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396 |
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397 // End of File |