photosgallery/collectionframework/datasource/plugins/glxdatasourcemde/src/glxdatasourcetaskmde.cpp
changeset 0 4e91876724a2
child 18 bcb43dc84c44
equal deleted inserted replaced
-1:000000000000 0:4e91876724a2
       
     1 /*
       
     2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description: The glx data source task MDE class.   
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 /**
       
    22  * @internal reviewed 11/07/2007 by M Byrne
       
    23  * @internal reviewed 24/07/2007 by K Hoikka, SCO 403-8472 removal of all view
       
    24  */
       
    25 
       
    26 
       
    27 #include "glxdatasourcetaskmde.h"
       
    28 
       
    29 #include <glxcollectionpluginCamera.hrh>
       
    30 #include <glxcollectionpluginDownloads.hrh>
       
    31 #include <glxcollectionpluginMonths.hrh>
       
    32 #include <glxcollectionpluginalbums.hrh>
       
    33 #include <glxcollectionpluginall.hrh>
       
    34 #include <glxcollectionplugintags.hrh>
       
    35 #include <glxerrors.h>
       
    36 #include <glxfilterfactory.h>
       
    37 #include <glxgetrequest.h>
       
    38 #include <glxidlistrequest.h>
       
    39 #include <glxlog.h>
       
    40 #include <glxmediacollectioninternaldefs.h>
       
    41 #include <glxmediageneraldefs.h>
       
    42 #include <glxrequest.h>
       
    43 #include <glxthumbnailattributeinfo.h>
       
    44 #include <glxthumbnailrequest.h>
       
    45 #include <glxtndatabase.h>
       
    46 #include <glxtnfileinfo.h>
       
    47 #include <glxtnthumbnailcreator.h>
       
    48 #include <lbsposition.h>
       
    49 #include <mdeconstants.h>
       
    50 #include <mdelogiccondition.h>
       
    51 #include <mdeobject.h>
       
    52 #include <mdeobjectdef.h>
       
    53 #include <mdeobjectquery.h>
       
    54 #include <mdepropertydef.h>
       
    55 #include <mderelationdef.h>
       
    56 #include <mdesession.h>
       
    57 #include <mdetextproperty.h>
       
    58 #include <mpxmedia.h>
       
    59 #include <mpxmediaarray.h> 
       
    60 #include <mpxmediacollectiondetaildefs.h>
       
    61 #include <mpxmediacontainerdefs.h>
       
    62 #include <mpxmediadrmdefs.h>
       
    63 #include <mpxmediageneraldefs.h>
       
    64 
       
    65 #include "glxdatasourcemde.h"
       
    66 #include "glxdatasourcemde.hrh"
       
    67 
       
    68 // CONSTANTS
       
    69 _LIT(KPropertyDefNameCreationDate, "CreationDate");
       
    70 _LIT(KPropertyDefNameLastModifiedDate, "LastModifiedDate");
       
    71 _LIT(KPropertyDefNameTitle, "Title");
       
    72 _LIT(KPropertyDefNameDRM, "DRM");
       
    73 _LIT(KPropertyDefNameUsageCount, "UsageCount");
       
    74 _LIT(KPropertyDefNameFrameCount, "FrameCount");
       
    75 _LIT(KPropertyDefNameOrigin, "Origin");
       
    76 
       
    77 // ----------------------------------------------------------------------------
       
    78 //  Constructor
       
    79 // ----------------------------------------------------------------------------
       
    80 //  
       
    81 CGlxDataSourceTaskMde:: CGlxDataSourceTaskMde(CGlxRequest* aRequest, 
       
    82         MGlxDataSourceRequestObserver& aObserver, CGlxDataSource* aDataSource)
       
    83     : CGlxDataSourceTask(aRequest, aObserver, aDataSource)
       
    84     {
       
    85     GLX_LOG_ENTRY_EXIT("CGlxDataSourceTaskMde::CGlxDataSourceTaskMde()");
       
    86     // No implementation required
       
    87     }
       
    88 
       
    89 // ----------------------------------------------------------------------------
       
    90 //  Destructor
       
    91 // ----------------------------------------------------------------------------
       
    92 //  
       
    93 CGlxDataSourceTaskMde::~CGlxDataSourceTaskMde()
       
    94     {
       
    95     GLX_LOG_ENTRY_EXIT("CGlxDataSourceTaskMde::~CGlxDataSourceTaskMde()");
       
    96     DestroyQueries();
       
    97     }
       
    98 
       
    99 // ----------------------------------------------------------------------------
       
   100 //  Second stage constructor
       
   101 // ----------------------------------------------------------------------------
       
   102 //  	
       
   103 void CGlxDataSourceTaskMde::ConstructL()
       
   104     {
       
   105     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::ConstructL()");
       
   106     CreateResponseL();
       
   107 #ifdef USE_S60_TNM
       
   108     DataSource()->CancelFetchThumbnail();
       
   109 #else    
       
   110     DataSource()->ThumbnailCreator().CancelRequest( TGlxMediaId(0) );
       
   111 #endif
       
   112     }
       
   113 
       
   114 // ----------------------------------------------------------------------------
       
   115 //  CGlxDataSourceTaskMde::CancelRequest
       
   116 // ----------------------------------------------------------------------------
       
   117 //  
       
   118 void CGlxDataSourceTaskMde::CancelRequest()
       
   119     {
       
   120     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::CancelRequest()");
       
   121     DestroyQueries();
       
   122     iCancelled = ETrue;
       
   123     }
       
   124 
       
   125 // ----------------------------------------------------------------------------
       
   126 //  CGlxDataSourceTaskMde::HandleQueryNewResults
       
   127 // ----------------------------------------------------------------------------
       
   128 //      
       
   129 void CGlxDataSourceTaskMde::HandleQueryNewResults( CMdEQuery& /*aQuery*/,
       
   130                                                      TInt /*aFirstNewItemIndex*/,
       
   131                                                      TInt /*aNewItemCount*/ )
       
   132     {
       
   133     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::HandleQueryNewResults()");
       
   134     // Not used.
       
   135     }
       
   136 
       
   137 
       
   138 // ----------------------------------------------------------------------------
       
   139 //  CGlxDataSourceTaskMde::HandleQueryNewResults
       
   140 // ----------------------------------------------------------------------------
       
   141 //    
       
   142 void CGlxDataSourceTaskMde::HandleQueryNewResults( CMdEQuery& /*aQuery*/,
       
   143                                 TInt /*aNewObjectItemCount*/,
       
   144                                 TInt /*aNewRelationItemCount*/,
       
   145                                 TInt /*aNewEventItemCount*/)
       
   146     {
       
   147     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::HandleQueryNewResults()");
       
   148     // Not used.
       
   149     }
       
   150 
       
   151 
       
   152 // ----------------------------------------------------------------------------
       
   153 // CGlxDataSourceTaskMde::HandleQueryCompleted
       
   154 // ----------------------------------------------------------------------------
       
   155 //
       
   156 void CGlxDataSourceTaskMde::HandleQueryCompleted(CMdEQuery& aQuery, TInt aError)
       
   157     {
       
   158     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::HandleQueryCompleted()");
       
   159     __ASSERT_ALWAYS(&aQuery == iQueries[0], Panic(EGlxPanicQueryLogicError));
       
   160 
       
   161     TInt err = aError;
       
   162     if (err == KErrNone)
       
   163         {
       
   164         TRAP(err, HandleQueryCompletedL(aQuery));
       
   165         }
       
   166 
       
   167     if (err != KErrNone)
       
   168         {
       
   169         HandleRequestComplete(err);
       
   170         }
       
   171     }
       
   172 
       
   173 // ----------------------------------------------------------------------------
       
   174 //  CGlxDataSourceTaskMde::DataSource
       
   175 // ----------------------------------------------------------------------------
       
   176 //   
       
   177 CGlxDataSourceMde* CGlxDataSourceTaskMde::DataSource()
       
   178     {
       
   179     GLX_LOG_ENTRY_EXIT("CGlxDataSourceMde* CGlxDataSourceTaskMde::DataSource()");
       
   180     return static_cast<CGlxDataSourceMde*>(iDataSource);
       
   181     }
       
   182 
       
   183 // ----------------------------------------------------------------------------
       
   184 //  CGlxDataSourceTaskMde::AddMonthFilterL
       
   185 // ----------------------------------------------------------------------------
       
   186 //     
       
   187 void CGlxDataSourceTaskMde::AddMonthFilterL(const TGlxMediaId& aContainerId, TGlxFilterProperties& aFilterProperties)
       
   188     {
       
   189     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::AddMonthFilterL()");
       
   190     CMdEObject* month = DataSource()->Session().GetObjectL(aContainerId.Value());
       
   191     if( !month )
       
   192         {
       
   193         User::Leave(KErrNotFound);
       
   194         }
       
   195     CleanupStack::PushL(month);
       
   196     
       
   197     AddMonthFilterL(month, aFilterProperties);
       
   198         
       
   199     CleanupStack::PopAndDestroy(month);
       
   200     }
       
   201 
       
   202 
       
   203 // ----------------------------------------------------------------------------
       
   204 //  CGlxDataSourceTaskMde::AddMonthFilterL
       
   205 // ----------------------------------------------------------------------------
       
   206 //   
       
   207 void CGlxDataSourceTaskMde::AddMonthFilterL(CMdEObject* aMonth, TGlxFilterProperties& aFilterProperties)
       
   208     {
       
   209     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::AddMonthFilterL()");
       
   210     CMdEPropertyDef* creationDateDef = DataSource()->ObjectDef().GetPropertyDefL(KPropertyDefNameCreationDate);
       
   211     if (!creationDateDef  || creationDateDef->PropertyType() != EPropertyTime)
       
   212         {
       
   213         User::Leave(KErrCorrupt);
       
   214         }
       
   215 
       
   216     CMdEPropertyDef* lmDateDef = DataSource()->ObjectDef().GetPropertyDefL(KPropertyDefNameLastModifiedDate);
       
   217     if (!lmDateDef  || lmDateDef->PropertyType() != EPropertyTime)
       
   218         {
       
   219         User::Leave(KErrCorrupt);
       
   220         }
       
   221         
       
   222     CMdEProperty* startDate;
       
   223     TInt startDateIndex = aMonth->Property(*creationDateDef, startDate);
       
   224     if( KErrNotFound == startDateIndex) 
       
   225         {
       
   226         User::Leave(KErrCorrupt);
       
   227         }
       
   228     aFilterProperties.iStartDate = static_cast<CMdETimeProperty*>(startDate)->Value();
       
   229      
       
   230     CMdEProperty* endDate;
       
   231     TInt endDateIndex = aMonth->Property(*lmDateDef, endDate);
       
   232     if( KErrNotFound == endDateIndex) 
       
   233         {
       
   234         User::Leave(KErrCorrupt);
       
   235         }
       
   236     aFilterProperties.iEndDate = static_cast<CMdETimeProperty*>(endDate)->Value();
       
   237     }
       
   238 
       
   239 // ----------------------------------------------------------------------------
       
   240 //  CGlxDataSourceTaskMde::SetQueryConditionsL
       
   241 // ----------------------------------------------------------------------------
       
   242 //    
       
   243 void CGlxDataSourceTaskMde::SetQueryConditionsL(CMdEQuery& aQuery, const TGlxFilterProperties& aFilterProperties, const TGlxMediaId aContainerId, CMdEObjectDef& aObjectDef)
       
   244     {
       
   245     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::SetQueryConditionsL()");
       
   246     CMdELogicCondition& rootCondition = aQuery.Conditions();
       
   247     CMdEObjectDef* objectDef = &aObjectDef;
       
   248 
       
   249     SetQueryFilterConditionsL(rootCondition, *objectDef, aFilterProperties);
       
   250     SetSortOrderL(aQuery, aObjectDef, aFilterProperties);
       
   251     
       
   252     if( KGlxCollectionRootId != aContainerId.Value() )
       
   253         {
       
   254         CMdELogicCondition* containerCondition = NULL;
       
   255         CMdERelationCondition* relationCondition = NULL;
       
   256         objectDef = &DataSource()->ObjectDef();
       
   257         if( DataSource()->ContainerIsLeft(aObjectDef) )
       
   258             {
       
   259             relationCondition = &rootCondition.AddRelationConditionL(DataSource()->ContainsDef(), ERelationConditionSideRight);
       
   260             containerCondition = &relationCondition->LeftL();
       
   261             }
       
   262         else
       
   263             {
       
   264             relationCondition = &rootCondition.AddRelationConditionL(DataSource()->ContainsDef(), ERelationConditionSideLeft);
       
   265             containerCondition = &relationCondition->RightL();
       
   266             }
       
   267         containerCondition->AddObjectConditionL(aContainerId.Value());
       
   268         }
       
   269 
       
   270     }
       
   271 
       
   272 // ----------------------------------------------------------------------------
       
   273 //  CGlxDataSourceTaskMde::SetQueryFilterConditionsL
       
   274 // ----------------------------------------------------------------------------
       
   275 //  
       
   276 void CGlxDataSourceTaskMde::SetQueryFilterConditionsL(CMdELogicCondition& 
       
   277                                    aLogicCondition, CMdEObjectDef& aObjectDef,
       
   278                                  const TGlxFilterProperties& aFilterProperties)
       
   279     {
       
   280     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::SetQueryFilterConditionsL()");
       
   281     
       
   282     if( aFilterProperties.iUri )
       
   283         {
       
   284         aLogicCondition.AddObjectConditionL(EObjectConditionCompareUri, 
       
   285                                                      *aFilterProperties.iUri);
       
   286         }
       
   287 
       
   288     if( 0 == aObjectDef.Compare(DataSource()->ObjectDef()) ) 
       
   289         {
       
   290         // Filter on content type
       
   291         if ( EGlxFilterVideoAndImages == aFilterProperties.iItemType )
       
   292             {
       
   293             CMdELogicCondition& logicCondition = 
       
   294                 aLogicCondition.AddLogicConditionL(ELogicConditionOperatorOr);
       
   295             logicCondition.AddObjectConditionL( DataSource()->ImageDef() ); 
       
   296             logicCondition.AddObjectConditionL( DataSource()->VideoDef() );
       
   297             }
       
   298         }
       
   299     
       
   300     if( ( aFilterProperties.iMinCount > 0 ) && ( CGlxDataSource::EContainerTypeNotAContainer != DataSource()->ContainerType(&aObjectDef) ) )
       
   301         {
       
   302         CMdEPropertyDef* itemCountProperty = 
       
   303                          aObjectDef.GetPropertyDefL(KPropertyDefNameUsageCount);
       
   304         aLogicCondition.AddPropertyConditionL(*itemCountProperty, 
       
   305                               TMdEIntGreaterEqual(aFilterProperties.iMinCount));
       
   306         }
       
   307 
       
   308     if( 0 != aFilterProperties.iContainsItem.Value() )
       
   309         {
       
   310         
       
   311         if( DataSource()->ContainerIsLeft(aObjectDef) )
       
   312             {
       
   313             CMdERelationCondition& relationCondition = 
       
   314                     aLogicCondition.AddRelationConditionL(DataSource()->ContainsDef(), ERelationConditionSideLeft);
       
   315             relationCondition.RightL().AddObjectConditionL(aFilterProperties.iContainsItem.Value());
       
   316             }
       
   317         else
       
   318             {
       
   319             CMdERelationCondition& relationCondition = aLogicCondition.AddRelationConditionL(DataSource()->ContainsDef(), ERelationConditionSideRight);
       
   320             relationCondition.LeftL().AddObjectConditionL(aFilterProperties.iContainsItem.Value());
       
   321             }
       
   322         }
       
   323         
       
   324     if( EGlxFilterOriginNotUsed != aFilterProperties.iOrigin )
       
   325         {
       
   326         CMdEPropertyDef* originProperty = aObjectDef.GetPropertyDefL(KPropertyDefNameOrigin);
       
   327         if(originProperty)
       
   328             {
       
   329             if( EGlxFilterOriginDownload == aFilterProperties.iOrigin )
       
   330                 {
       
   331 #ifdef GLX_NO_ALL_VIEW
       
   332                 // The download collection shows all but captured items
       
   333                 aLogicCondition.AddPropertyConditionL(*originProperty, TMdEUintNotEqual(MdeConstants::Object::ECamera));
       
   334 #else
       
   335                 // The download collection shows only downloaded items
       
   336                 aLogicCondition.AddPropertyConditionL(*originProperty, TMdEUintEqual(MdeConstants::Object::EDownloaded));
       
   337 #endif            
       
   338                 }
       
   339             }
       
   340         }
       
   341         
       
   342     if( aFilterProperties.iExcludeAnimation )
       
   343         {
       
   344         //__ASSERT_DEBUG((EGlxFilterImage == aFilterProperties.iItemType), Panic(EGlxPanicIllegalArgument));
       
   345         // Exclude any image with a frame count > 1
       
   346         const TInt excludeAllImagesAboveOrEqualToThisFrameCount = 2;
       
   347         CMdEPropertyDef* frameCountProperty = DataSource()->ImageDef().GetPropertyDefL(KPropertyDefNameFrameCount);
       
   348         if( frameCountProperty )
       
   349             {
       
   350             aLogicCondition.AddPropertyConditionL(*frameCountProperty, TMdEIntLess(excludeAllImagesAboveOrEqualToThisFrameCount));
       
   351             }
       
   352         }
       
   353         
       
   354     if( aFilterProperties.iNoDRM )
       
   355         {
       
   356         __ASSERT_DEBUG((EGlxFilterImage == aFilterProperties.iItemType), Panic(EGlxPanicIllegalArgument));
       
   357         // Exclude any image which is DRM protected
       
   358         CMdEPropertyDef* drmProperty = DataSource()->ImageDef().GetPropertyDefL(KPropertyDefNameDRM);
       
   359         if( drmProperty )
       
   360             {
       
   361             aLogicCondition.AddPropertyConditionL(*drmProperty, EFalse);
       
   362             }
       
   363         }
       
   364         
       
   365     if( aFilterProperties.iPath )          // If this is set. Then we need to filter on the Ids it supplies
       
   366         {
       
   367         TArray<TInt> selection = aFilterProperties.iPath->Selection();
       
   368         TInt selectionCount = selection.Count();
       
   369         RArray<TItemId> itemList;
       
   370         CleanupClosePushL(itemList);
       
   371         GLX_DEBUG2("Reading Ids from Path, count = %d", selectionCount);
       
   372         if( selectionCount )
       
   373             {
       
   374             for( TInt i = 0; i < selectionCount; i++ )
       
   375                 {
       
   376                 const TMPXItemId& itemId = aFilterProperties.iPath->IdOfIndex(selection[i]);
       
   377                 itemList.AppendL(itemId);
       
   378                 }
       
   379             aLogicCondition.AddObjectConditionL(itemList);
       
   380             }
       
   381         CleanupStack::Pop(&itemList);
       
   382         }
       
   383         
       
   384     if( !aFilterProperties.iIncludeCameraAlbum )
       
   385         {
       
   386         CMdEObjectCondition& objectCondition = aLogicCondition.AddObjectConditionL(DataSource()->CameraAlbumId().Value());
       
   387         objectCondition.SetNegate(ETrue);
       
   388         }
       
   389     
       
   390     if( TTime(0) != aFilterProperties.iStartDate )
       
   391         {
       
   392         CMdEPropertyDef* creationDateDef = aObjectDef.GetPropertyDefL(KPropertyDefNameCreationDate);
       
   393         if (!creationDateDef  || creationDateDef->PropertyType() != EPropertyTime)
       
   394             {
       
   395             User::Leave(KErrCorrupt);
       
   396             }
       
   397 
       
   398         aLogicCondition.AddPropertyConditionL(*creationDateDef, TMdETimeBetween(aFilterProperties.iStartDate, aFilterProperties.iEndDate));
       
   399         }
       
   400     }
       
   401 
       
   402 // ----------------------------------------------------------------------------
       
   403 //  CGlxDataSourceTaskMde::SetSortOrderL
       
   404 // ----------------------------------------------------------------------------
       
   405 // 
       
   406 void CGlxDataSourceTaskMde::SetSortOrderL(CMdEQuery& aQuery, CMdEObjectDef& aObjectDef, 
       
   407                                          const TGlxFilterProperties& aFilterProperties)
       
   408     {
       
   409     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::SetSortOrderL()");
       
   410     switch(aFilterProperties.iSortOrder)
       
   411         {
       
   412         case EGlxFilterSortOrderAlphabetical:
       
   413             {
       
   414             CMdEPropertyDef* titleProperty = aObjectDef.GetPropertyDefL(KPropertyDefNameTitle);
       
   415             TMdEOrderRule orderRule(*titleProperty, aFilterProperties.iSortDirection == EGlxFilterSortDirectionAscending);
       
   416             orderRule.SetType(EOrderRuleTypeProperty);
       
   417             orderRule.SetCaseSensitive(EFalse);
       
   418             aQuery.AppendOrderRuleL(orderRule);
       
   419             break;
       
   420             }
       
   421          case EGlxFilterSortOrderItemCount:
       
   422             {
       
   423             CMdEPropertyDef* itemCountProperty = aObjectDef.GetPropertyDefL(KPropertyDefNameUsageCount);
       
   424             TMdEOrderRule orderRule(*itemCountProperty, aFilterProperties.iSortDirection == EGlxFilterSortDirectionAscending);
       
   425             orderRule.SetType(EOrderRuleTypeProperty);
       
   426             aQuery.AppendOrderRuleL(orderRule);
       
   427             break;
       
   428             }
       
   429         case EGlxFilterSortOrderCaptureDate:
       
   430             {
       
   431             CMdEPropertyDef* creationDateProperty = aObjectDef.GetPropertyDefL(KPropertyDefNameCreationDate);
       
   432             TMdEOrderRule orderRule(*creationDateProperty, aFilterProperties.iSortDirection == EGlxFilterSortDirectionAscending);
       
   433             orderRule.SetType(EOrderRuleTypeProperty);
       
   434             aQuery.AppendOrderRuleL(orderRule);
       
   435             TMdEOrderRule orderRule2(EOrderRuleTypeItemID, aFilterProperties.iSortDirection == EGlxFilterSortDirectionAscending);
       
   436             aQuery.AppendOrderRuleL(orderRule2);
       
   437             break;
       
   438             }
       
   439          case EGlxFilterSortOrderModifiedDate:
       
   440             {
       
   441             CMdEPropertyDef* modifiedDateProperty = aObjectDef.GetPropertyDefL(KPropertyDefNameLastModifiedDate);
       
   442             TMdEOrderRule orderRule(*modifiedDateProperty, aFilterProperties.iSortDirection == EGlxFilterSortDirectionAscending);
       
   443             orderRule.SetType(EOrderRuleTypeProperty);
       
   444             aQuery.AppendOrderRuleL(orderRule);
       
   445             TMdEOrderRule orderRule2(EOrderRuleTypeItemID, aFilterProperties.iSortDirection == EGlxFilterSortDirectionAscending);
       
   446             aQuery.AppendOrderRuleL(orderRule2);
       
   447             break;
       
   448             }
       
   449         case EGlxFilterSortOrderNotUsed:
       
   450             {
       
   451             break;
       
   452             }
       
   453         }
       
   454     }
       
   455 
       
   456 // ----------------------------------------------------------------------------
       
   457 //  CGlxDataSourceTaskMde::MaxQueryResultsCount
       
   458 // ----------------------------------------------------------------------------
       
   459 // 
       
   460 TInt CGlxDataSourceTaskMde::MaxQueryResultsCount(const TGlxFilterProperties& aFilterProperties) const
       
   461     {
       
   462     GLX_LOG_ENTRY_EXIT("TInt CGlxDataSourceTaskMde::MaxQueryResultsCount()");
       
   463     TInt ret = KMdEQueryDefaultMaxCount;
       
   464     if (aFilterProperties.iLastCaptureDate)
       
   465         {
       
   466         ret = 1;
       
   467         }
       
   468     return ret;
       
   469     }
       
   470 
       
   471 // ----------------------------------------------------------------------------
       
   472 //  CGlxDataSourceTaskMde::RemoveQuery
       
   473 // ----------------------------------------------------------------------------
       
   474 // 
       
   475 void CGlxDataSourceTaskMde::RemoveQuery()
       
   476     {
       
   477     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::RemoveQuery()");
       
   478     CMdEQuery* query = iQueries[0];
       
   479     iQueryTypes.Remove(0);
       
   480     iQueries.Remove(0);
       
   481     query->RemoveObserver(*this);
       
   482     delete query;
       
   483     }
       
   484 
       
   485 // ----------------------------------------------------------------------------
       
   486 //  CGlxDataSourceTaskMde::DoQueryL
       
   487 // ----------------------------------------------------------------------------
       
   488 // 	
       
   489 void CGlxDataSourceTaskMde::DoQueryL(CMdEObjectDef& aObjectDef, 
       
   490         TBool aIsContent, TGlxQueryType aQueryType, TQueryResultMode aResultMode, 
       
   491                                                 const TGlxMediaId& aContainerId)
       
   492     {
       
   493     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::DoQueryL()");
       
   494     
       
   495     CMdEObjectDef* queryBaseObject = &aObjectDef;
       
   496     if( aIsContent )
       
   497         {
       
   498         switch(iFilterProperties.iItemType)
       
   499             {
       
   500             case EGlxFilterImage: 
       
   501                 {
       
   502                 queryBaseObject = &DataSource()->ImageDef();
       
   503                 break;
       
   504                 }
       
   505             case EGlxFilterVideo:
       
   506                 {
       
   507                 queryBaseObject = &DataSource()->VideoDef();
       
   508                 break;
       
   509                 }
       
   510             default:
       
   511                 {
       
   512                 queryBaseObject = &DataSource()->ObjectDef();
       
   513                 break;
       
   514                 }
       
   515             }
       
   516         }
       
   517 
       
   518     CMdEQuery* query = DataSource()->Session().NewObjectQueryL(*DataSource()->NamespaceDef(), *queryBaseObject, this);
       
   519     CleanupStack::PushL(query);
       
   520     
       
   521     SetQueryConditionsL(*query, iFilterProperties, aContainerId, aObjectDef);   
       
   522     query->SetResultMode(aResultMode);
       
   523     
       
   524     CleanupStack::Pop(query);
       
   525     
       
   526     AppendQueryL(query, aQueryType);
       
   527 
       
   528     query->FindL(MaxQueryResultsCount(iFilterProperties));    
       
   529     }
       
   530 
       
   531 // ----------------------------------------------------------------------------
       
   532 // CGlxDataSourceTask::QueueImageVideoObjectQueriesL
       
   533 // ----------------------------------------------------------------------------
       
   534 //
       
   535 void CGlxDataSourceTaskMde::QueueImageVideoObjectQueriesL(const RArray<TItemId>& aObjectIds,
       
   536                                           const TGlxFilterProperties& aFilterProperties)
       
   537     {
       
   538     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::QueueImageVideoObjectQueriesL()");
       
   539     if (aFilterProperties.iItemType == EGlxFilterImage)
       
   540         {
       
   541         // Only perform the image query
       
   542         QueueObjectQueryL(DataSource()->ImageDef(), aObjectIds, EImageVideoQuery);
       
   543         }
       
   544     else if (aFilterProperties.iItemType == EGlxFilterVideo)
       
   545         {
       
   546         // Only perform the video query
       
   547         QueueObjectQueryL(DataSource()->VideoDef(), aObjectIds, EImageVideoQuery);
       
   548         }
       
   549     else
       
   550         {
       
   551         QueueObjectQueryL(DataSource()->ImageDef(), aObjectIds, EImageVideoQuery);
       
   552         QueueObjectQueryL(DataSource()->VideoDef(), aObjectIds, EImageVideoQuery);
       
   553         // Perform both the image and video queries
       
   554         }
       
   555     }
       
   556 
       
   557 // ----------------------------------------------------------------------------
       
   558 // CGlxDataSourceTask::QueueTagObjectQueryL
       
   559 // ----------------------------------------------------------------------------
       
   560 //
       
   561 void CGlxDataSourceTaskMde::QueueTagObjectQueryL(const RArray<TItemId>& aObjectIds)
       
   562     {
       
   563     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::QueueTagObjectQueryL()");
       
   564     QueueObjectQueryL(DataSource()->TagDef(), aObjectIds, EImageVideoQuery);
       
   565     }
       
   566 
       
   567 // ----------------------------------------------------------------------------
       
   568 // CGlxDataSourceTask::QueueAlbumObjectQueryL
       
   569 // ----------------------------------------------------------------------------
       
   570 //
       
   571 void CGlxDataSourceTaskMde::QueueAlbumObjectQueryL(const RArray<TItemId>& aObjectIds)
       
   572     {
       
   573     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::QueueAlbumObjectQueryL()");
       
   574     QueueObjectQueryL(DataSource()->AlbumDef(), aObjectIds, EImageVideoQuery);
       
   575     }
       
   576 
       
   577 
       
   578 void CGlxDataSourceTaskMde::QueueMonthObjectQueryL(const RArray<TItemId>& aObjectIds)
       
   579     {
       
   580     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::QueueMonthObjectQueryL()");
       
   581     QueueObjectQueryL(DataSource()->MonthDef(), aObjectIds, EImageVideoQuery);
       
   582     }
       
   583 
       
   584 // ----------------------------------------------------------------------------
       
   585 // CGlxDataSourceTask::QueueObjectQueryL
       
   586 // ----------------------------------------------------------------------------
       
   587 //
       
   588 void CGlxDataSourceTaskMde::QueueObjectQueryL(CMdEObjectDef& aObjectDef, 
       
   589         const RArray<TItemId>& aObjectIds, const TGlxQueryType& aQueryType)
       
   590     {
       
   591     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::QueueObjectQueryL()");
       
   592     CMdEQuery* query = DataSource()->Session().NewObjectQueryL(*DataSource()->NamespaceDef(), aObjectDef,  this);
       
   593     CleanupStack::PushL(query);
       
   594     
       
   595     CMdELogicCondition& lc = query->Conditions();
       
   596     lc.AddObjectConditionL(aObjectIds);
       
   597  
       
   598     query->SetResultMode(EQueryResultModeObjectWithoutFreetexts);
       
   599     
       
   600     CleanupStack::Pop(query);
       
   601     AppendQueryL(query, aQueryType);
       
   602     
       
   603     }
       
   604 
       
   605 // ----------------------------------------------------------------------------
       
   606 //  CGlxDataSourceTaskMde::AppendQueryL
       
   607 // ----------------------------------------------------------------------------
       
   608 // 
       
   609 void CGlxDataSourceTaskMde::AppendQueryL(CMdEQuery* aQuery, const TGlxQueryType& aQueryType)
       
   610     {
       
   611     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::AppendQueryL()");
       
   612     CleanupStack::PushL(aQuery);
       
   613     
       
   614     TInt err = iQueryTypes.Append(aQueryType);
       
   615     
       
   616     if (KErrNone == err)
       
   617         {
       
   618         iQueries.AppendL(aQuery);
       
   619         CleanupStack::Pop(aQuery);
       
   620         }
       
   621     else
       
   622         {
       
   623         User::Leave(err);
       
   624         }
       
   625     }
       
   626 
       
   627 // ----------------------------------------------------------------------------
       
   628 // CGlxDataSourceTaskMde::ExecuteQueryL
       
   629 // ----------------------------------------------------------------------------
       
   630 // 
       
   631 void CGlxDataSourceTaskMde::ExecuteQueryL()
       
   632     {
       
   633     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::ExecuteQueryL()");
       
   634     __ASSERT_DEBUG(iQueries.Count(), Panic(EGlxPanicQueryLogicError));
       
   635     iQueries[0]->FindL();
       
   636     }
       
   637 
       
   638 // ----------------------------------------------------------------------------
       
   639 //  CGlxDataSourceTaskMde::HandleQueryCompletedL
       
   640 // ----------------------------------------------------------------------------
       
   641 // 
       
   642 void CGlxDataSourceTaskMde::HandleQueryCompletedL(CMdEQuery& aQuery)
       
   643     {
       
   644     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::HandleQueryCompletedL()");
       
   645     DoHandleQueryCompletedL(aQuery);
       
   646     RemoveQuery();
       
   647     DoNextQueryL();
       
   648     }
       
   649 
       
   650 // ----------------------------------------------------------------------------
       
   651 //  CGlxDataSourceTaskMde::DestroyQueries
       
   652 // ----------------------------------------------------------------------------
       
   653 // 
       
   654 void CGlxDataSourceTaskMde::DestroyQueries()
       
   655     {
       
   656     GLX_LOG_ENTRY_EXIT("void CGlxDataSourceTaskMde::DestroyQueries()");
       
   657     for (TInt i = 0; i < iQueries.Count(); i++)
       
   658         {
       
   659         // Ensure that there are not any running queries
       
   660         iQueries[i]->RemoveObserver(*this);
       
   661         iQueries[i]->Cancel();
       
   662         }
       
   663     iQueries.ResetAndDestroy();
       
   664     iQueryTypes.Close();
       
   665     }
       
   666 
       
   667 
       
   668