diff -r 000000000000 -r e686773b3f54 presencecache/presencecacheutils/src/presencecachebuddyidcreatorprivate.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/presencecache/presencecacheutils/src/presencecachebuddyidcreatorprivate.cpp	Tue Feb 02 10:12:17 2010 +0200
@@ -0,0 +1,111 @@
+/*
+* Copyright (c) 2009 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 "presencecachebuddyidcreatorprivate.h"
+#include <CVPbkContactIdConverter.h>
+#include <CVPbkContactStoreUriArray.h>
+#include <VPbkContactStoreUris.h>
+#include <MVPbkContactStore.h>
+#include <TVPbkContactStoreUriPtr.h>
+#include <CVPbkContactManager.h>
+#include <MVPbkContactStoreList.h>
+#include <MVPbkContactStore.h>
+#include <MVPbkContactLinkArray.h>
+#include <cntdef.h>
+
+_LIT( KServiceIdentifier, "ContactStatusService:" );
+
+CPresenceCacheBuddyIdCreatorPrivate* CPresenceCacheBuddyIdCreatorPrivate::NewL( 
+        CVPbkContactManager* aContactManager )
+    {
+    CPresenceCacheBuddyIdCreatorPrivate* self =
+            new (ELeave) CPresenceCacheBuddyIdCreatorPrivate( aContactManager );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+inline CPresenceCacheBuddyIdCreatorPrivate::CPresenceCacheBuddyIdCreatorPrivate( 
+        CVPbkContactManager* aContactManager )
+: iContactManager( aContactManager )
+    {
+    }
+
+inline void CPresenceCacheBuddyIdCreatorPrivate::ConstructL()
+    {
+    if( !iContactManager )
+        {
+        CVPbkContactStoreUriArray* uriList = CVPbkContactStoreUriArray::NewLC();
+        uriList->AppendL( TVPbkContactStoreUriPtr( 
+                VPbkContactStoreUris::DefaultCntDbUri() ) );
+
+        iContactManager = CVPbkContactManager::NewL( *uriList );
+        CleanupStack::PopAndDestroy( uriList );
+        iOwnContactManager = ETrue;
+        }
+    MVPbkContactStore* store = iContactManager->ContactStoresL().
+            Find( VPbkContactStoreUris::DefaultCntDbUri() );
+    
+    iConverter = CVPbkContactIdConverter::NewL( *store );
+    }
+
+CPresenceCacheBuddyIdCreatorPrivate::~CPresenceCacheBuddyIdCreatorPrivate()
+    {
+    delete iConverter;
+    if( iOwnContactManager )
+        {
+        delete iContactManager;
+        }
+    }
+
+HBufC* CPresenceCacheBuddyIdCreatorPrivate::CreateBuddyIdLC( 
+        const TDesC8& aContactLink )
+    {
+    MVPbkContactLinkArray* linkList = 
+            iContactManager->CreateLinksLC( aContactLink );
+    TInt32 id = KNullContactId;
+    if( linkList->Count() > 0 )
+        {
+        const MVPbkContactLink& link = linkList->At( 0 );
+        id = iConverter->LinkToIdentifier( link );
+        }
+    CleanupStack::PopAndDestroy();  // linkList
+    
+    HBufC* buddyId = NULL;
+    if( KNullContactId == id )
+        {
+        // incorrect aContactLink
+        //  -> can't create identifier 
+        User::Leave( KErrArgument );
+        }
+    else
+        {
+        // generate presence identity from contact id in format 
+        // "[ServiceName]:[contact id]"
+        //
+        TBuf<11> num; // enough space to hold 32bit number
+        num.Num( id );
+        buddyId = HBufC::NewLC( num.Length() + KServiceIdentifier().Length() );
+        TPtr retPtr( buddyId->Des() );
+        retPtr.Copy( KServiceIdentifier );
+        retPtr.Append( num );
+        }
+    
+    return buddyId;
+    }
+