--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/predictivesearch/PcsAlgorithm/Algorithm2/src/CPsDataPluginInterface.cpp	Wed Sep 01 12:29:52 2010 +0100
@@ -0,0 +1,246 @@
+/*
+* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  
+*
+*/
+
+
+// INCLUDE FILES
+#include "CPsDataPluginInterface.h"
+#include "CPsDataPlugin.h"
+#include "CPcsDebug.h"
+
+// ============================== MEMBER FUNCTIONS ============================
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::NewL
+// Two Phase Construction
+// ----------------------------------------------------------------------------
+CPsDataPluginInterface* CPsDataPluginInterface::NewL(MDataStoreObserver* aObserverForDataStore,
+													MStoreListObserver* aStoreListObserver)
+{
+    PRINT ( _L("Enter CPsDataPluginInterface::NewL") );
+    
+    CPsDataPluginInterface* self = CPsDataPluginInterface::NewLC(aObserverForDataStore, aStoreListObserver);
+    CleanupStack::Pop( self );
+    
+    PRINT ( _L("End CPsDataPluginInterface::NewL") );
+    
+    return self;
+}
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::NewLC
+// Two Phase Construction
+// ---------------------------------------------------------------------------- 
+CPsDataPluginInterface* CPsDataPluginInterface::NewLC(MDataStoreObserver* aObserverForDataStore,
+													MStoreListObserver* aStoreListObserver)
+{
+    PRINT ( _L("Enter CPsDataPluginInterface::NewLC") );
+    
+    CPsDataPluginInterface* self = new( ELeave ) CPsDataPluginInterface();
+    CleanupStack::PushL( self );
+    self->ConstructL(aObserverForDataStore, aStoreListObserver);
+    
+    PRINT ( _L("End CPsDataPluginInterface::NewLC") );
+    
+    return self;
+}
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::CPsDataPluginInterface
+// Constructor
+// ----------------------------------------------------------------------------    
+CPsDataPluginInterface::CPsDataPluginInterface()
+{
+    PRINT ( _L("Enter CPsDataPluginInterface::CPsDataPluginInterface") );
+    PRINT ( _L("End CPsDataPluginInterface::CPsDataPluginInterface") );
+}
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::ConstructL
+// 2nd phase constructor
+// ---------------------------------------------------------------------------- 
+void CPsDataPluginInterface::ConstructL(MDataStoreObserver* aObserverForDataStore,
+										MStoreListObserver* aStoreListObserver)
+{
+    PRINT ( _L("Enter CPsDataPluginInterface::ConstructL") );
+    iObserverForDataStore = aObserverForDataStore;
+    iStoreListObserver = aStoreListObserver;
+    PRINT ( _L("End CPsDataPluginInterface::ConstructL") );
+}
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::~CPsDataPluginInterface
+// Constructor
+// ---------------------------------------------------------------------------- 
+CPsDataPluginInterface::~CPsDataPluginInterface( ) 
+{
+    PRINT ( _L("Enter CPsDataPluginInterface::~CPsDataPluginInterface") );
+    
+    UnloadPlugIns();
+    iPsDataPluginInstances.ResetAndDestroy();
+    
+    PRINT ( _L("End CPsDataPluginInterface::~CPsDataPluginInterface") );
+}
+        
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::InstantiateAllPlugInsL
+// Instantiates all plugins
+// ----------------------------------------------------------------------------     
+void CPsDataPluginInterface::InstantiateAllPlugInsL( )
+{
+    PRINT ( _L("Enter CPsDataPluginInterface::InstantiateAllPlugInsL") );
+
+    RImplInfoPtrArray infoArray;
+    
+    // Get list of all implementations
+    ListAllImplementationsL( infoArray );
+    
+    // Instantiate plugins for all impUIds by calling 
+    // InstantiatePlugInFromImpUidL
+    const TInt infoArrayCount = infoArray.Count();
+    for ( TInt i=0; i < infoArrayCount; i++ )
+    {
+        // Get imp info
+        CImplementationInformation& info( *infoArray[i] );
+        
+        // Get imp UID
+        TUid impUid ( info.ImplementationUid() );
+        
+        PRINT ( _L("------------- PS Data Store Details -----------"));
+        PRINT1 ( _L("Name: %S"), &(info.DisplayName()) );
+        PRINT1 ( _L("UID: %X"), impUid.iUid );
+        PRINT ( _L("-----------------------------------------------"));
+        
+        CPsDataPlugin* plugin = NULL;
+        
+        //instantiate plugin for impUid
+        plugin = InstantiatePlugInFromImpUidL( impUid, iObserverForDataStore, iStoreListObserver ) ;
+        if ( plugin )
+        {
+            
+            iPsDataPluginInstances.AppendL( plugin );
+                   
+        }    	        	     
+    }
+    
+    infoArray.ResetAndDestroy();
+    
+    PRINT ( _L("End CPsDataPluginInterface::InstantiateAllPlugInsL") );
+}
+
+// -----------------------------------------------------------------------------
+// CPsDataPluginInterface::UnloadPlugIns
+// Unloads plugins
+// -----------------------------------------------------------------------------
+void CPsDataPluginInterface::UnloadPlugIns()
+{
+    PRINT ( _L("Enter CPsDataPluginInterface::UnloadPlugIns") );
+    
+    REComSession::FinalClose();
+    
+    PRINT ( _L("End CPsDataPluginInterface::UnloadPlugIns") );
+}
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::InstantiatePlugInFromImpUidL
+// Instantiates plugin
+// ---------------------------------------------------------------------------- 
+CPsDataPlugin* CPsDataPluginInterface::InstantiatePlugInFromImpUidL( const TUid& aImpUid, 
+																	 MDataStoreObserver* aObserverForDataStore,
+																	 MStoreListObserver* aStoreListObserver )
+{
+    PRINT ( _L("Enter CPsDataPluginInterface::InstantiatePlugInFromImpUidL") );
+    
+    CPsDataPlugin* plugin = CPsDataPlugin::NewL(aImpUid, aObserverForDataStore, aStoreListObserver);
+    
+    PRINT ( _L("End CPsDataPluginInterface::InstantiatePlugInFromImpUidL") );
+    
+    return plugin;
+}
+    
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::RequestForDataL
+// Requests for data from the data store
+// ---------------------------------------------------------------------------- 
+void  CPsDataPluginInterface::RequestForDataL(TDesC& aDataStore)
+{
+
+    PRINT ( _L("Enter CPsDataPluginInterface::RequestForDataL") );
+   const TInt instancesCount = iPsDataPluginInstances.Count();
+    for ( TInt idx = 0; idx < instancesCount; idx++ )
+    {
+        if(iPsDataPluginInstances[idx]->IsDataStoresSupportedL(aDataStore))
+        {
+       		iPsDataPluginInstances[idx]->RequestForDataL(aDataStore);
+    		break; 
+        }
+    }
+    
+    PRINT ( _L("End CPsDataPluginInterface::RequestForDataL") );
+
+}
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::GetAllSupportedDataStoresL
+// Requests all the supported data stores from data adapters
+// ---------------------------------------------------------------------------- 
+void  CPsDataPluginInterface::GetAllSupportedDataStoresL(RPointerArray<TDesC>& aDataStores)
+{
+
+    PRINT ( _L("Enter CPsDataPluginInterface::GetAllSupportedDataStoresL") );
+    const TInt instancesCount = iPsDataPluginInstances.Count();
+    for ( TInt idx = 0; idx < instancesCount; idx++ )
+    {       
+       iPsDataPluginInstances[idx]->GetSupportedDataStoresL(aDataStores);
+    }
+    
+    PRINT ( _L("End CPsDataPluginInterface::GetAllSupportedDataStoresL") );
+
+}
+
+// ----------------------------------------------------------------------------
+// CPsDataPluginInterface::GetAllSupportedDataFieldsL
+// Requests all the supported data fields from from data adapters
+// ---------------------------------------------------------------------------- 
+void  CPsDataPluginInterface::GetSupportedDataFieldsL(TDesC& aUri, RArray<TInt>& aDataFields)
+{
+
+    PRINT ( _L("Enter CPsDataPluginInterface::GetAllSupportedDataStoresL") );
+   
+    const TInt instancesCount = iPsDataPluginInstances.Count();
+    for ( TInt idx = 0; idx < instancesCount; idx++ )
+    {
+       RPointerArray<TDesC> dataStores;
+       CleanupClosePushL( dataStores );
+       iPsDataPluginInstances[idx]->GetSupportedDataStoresL(dataStores);
+       
+       const TInt dataStoresCount = dataStores.Count();
+       for ( TInt i(0); i < dataStoresCount; i++)
+       {
+	       	if ( dataStores[i]->Compare(aUri) == 0)
+	       	{
+	       		iPsDataPluginInstances[idx]->GetSupportedDataFieldsL(aDataFields);
+	       		break;
+	       	}
+       }
+       CleanupStack::PopAndDestroy( &dataStores ); // Close
+    }
+    
+    PRINT ( _L("End CPsDataPluginInterface::GetAllSupportedDataStoresL") );
+
+}
+// End of file