--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ximpfw/presence/srcpresencedatamodel/presencepublishing/documentutils.cpp	Wed Nov 03 09:32:20 2010 +0530
@@ -0,0 +1,94 @@
+/*
+* Copyright (c) 2006 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:  Document utils
+*
+*/
+
+#include "documentutils.h"
+#include "presenceinfoimp.h"
+#include "presenceinfofilterimp.h"
+#include "ximpobjecthelpers.h"
+
+
+// ============================ MEMBER FUNCTIONS =============================
+
+// ---------------------------------------------------------------------------
+// DocumentUtils::InfoFilterUnionL()
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CPresenceInfoFilterImp* DocumentUtils::InfoFilterUnionL(
+        CPresenceInfoFilterImp& aSource1,
+        CPresenceInfoFilterImp& aSource2 )
+    {
+    RPointerArray< CPresenceInfoFilterImp > array;
+    CleanupClosePushL( array );
+    array.AppendL( &aSource1 );
+    array.AppendL( &aSource2 );
+    CPresenceInfoFilterImp* retVal = InfoFilterUnionL( array );
+    CleanupStack::PopAndDestroy(); // array
+    return retVal;
+    }
+
+
+// ---------------------------------------------------------------------------
+// DocumentUtils::DocumentUnionL()
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CPresenceInfoFilterImp* DocumentUtils::InfoFilterUnionL(
+        const RPointerArray< CPresenceInfoFilterImp >& aSources )
+    {
+    CPresenceInfoFilterImp* target = NULL;
+    TInt countOfSources = aSources.Count();
+    if( countOfSources == 0 ) // No sources to combine.
+        {
+        target = CPresenceInfoFilterImp::NewLC();
+        CleanupStack::Pop(); // target
+        return target;
+        }
+
+    // Create a new one instead of cloning the first to avoid possible duplicates.
+    // Algorithm is: given filters a,b,c: 
+    //   new = empty. 
+    //   new = union(new,a)
+    //   new = union(new,b)
+    //   new = union(new,c)
+    // result in new.
+   
+    target = CPresenceInfoFilterImp::NewL();
+
+    for ( TInt i = 0; i < aSources.Count(); i++ )
+        {
+        CleanupStack::PushL( target );
+
+        CPresenceInfoFilterImp* filter = aSources[ i ];
+        CPresenceInfoFilterImp* tmp = CPresenceInfoFilterImp::UnionL( *target, *filter );
+
+        CleanupStack::PopAndDestroy( target );
+
+        target = tmp;
+        }
+
+    return target;
+    }
+
+
+EXPORT_C CPresenceInfoImp* DocumentUtils::CollectFilteredPresenceInfoLC(
+        const CPresenceInfoFilterImp& aPif,
+        const CPresenceInfoImp& aSource )
+    {
+    CPresenceInfoImp* newInfo = aSource.FilteredInfoLC( aPif );
+    return newInfo;
+    }
+
+// End of file