--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lowlevellibsandfws/pluginfw/Framework/Example/CachedCustomResolver.cpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,136 @@
+// Copyright (c) 2008-2009 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:
+//
+
+/**
+ @file
+ @internalComponent
+*/
+
+#include "CachedCustomResolver.h"
+#include <ecom/implementationproxy.h>
+#include <ecom/ecomerrorcodes.h>
+
+/**
+This function is used for cleanup support of ListAllL call.
+*/
+LOCAL_C void CleanupEComPtrArray(TAny* aArray)
+	{
+	RImplInfoArray* self = static_cast<RImplInfoArray*>(aArray);
+	self->Reset();
+	delete self;
+	}
+
+// static factory method to instantiate the resolver.
+CExampleResolver* CExampleResolver::NewL(MPublicRegistry& aRegistry)
+	{
+	CExampleResolver* self = new(ELeave) CExampleResolver(aRegistry);
+	(void)self->GetSignature();
+	return self;
+	}
+
+CExampleResolver::~CExampleResolver()
+	{
+	// nothing
+	}
+
+CExampleResolver::CExampleResolver(MPublicRegistry& aRegistry)
+: CResolver(aRegistry)
+	{
+	// nothing to do
+	}
+
+// stub for the IdentifyImplementationL pure virtual
+TUid CExampleResolver::IdentifyImplementationL(TUid aInterfaceUid, 
+											   const TEComResolverParams&) const
+	{
+	RImplInfoArray& implementationsInfo = iRegistry.ListImplementationsL(aInterfaceUid);
+	if (implementationsInfo.Count())
+		{
+		return implementationsInfo[0]->ImplementationUid();
+		}
+	return KNullUid;
+	}
+
+// stub for the ListAllL pure virtual
+RImplInfoArray* CExampleResolver::ListAllL(TUid aInterfaceUid, 
+										   const TEComResolverParams&) const
+	{
+	TBool checkMyVersion = (aInterfaceUid == KCustomResolverInterfaceUid);
+	TBool foundMyself = EFalse;
+
+	// Ownership of the returned pointer is passed back to the caller.
+	// Hence need to new it.
+	RImplInfoArray* retList = new(ELeave) RImplInfoArray;
+	CleanupStack::PushL(TCleanupItem(CleanupEComPtrArray, retList));
+
+	RImplInfoArray& fullList = iRegistry.ListImplementationsL(aInterfaceUid);
+	const TInt numImps = fullList.Count();
+	for(TInt index = 0; index < numImps; ++index)
+		{
+		if (checkMyVersion)
+			{
+			VerifyVersionL(fullList[index], foundMyself);
+			}
+
+		User::LeaveIfError(retList->Append(fullList[index]));
+		}
+
+	if (checkMyVersion && !foundMyself)
+		{
+		RDebug::Print(_L("ECOM: error cachedcustomresolver not in list\n"));
+		User::Leave(KEComErrMismatchedTags);
+		}
+
+	// Reset the member variable because we are passing ownership back
+	CleanupStack::Pop(retList);
+	return retList;
+	}
+
+//
+// Used by test code in list request where the i/f UID is KCustomResolverInterfaceUid.
+// This gives the custom resolver object a chance to check that the version listed
+// in ECOM registry matches the current running object.
+//
+// param aImplInfo - the implementation object to check
+// param aMe - output parameter to tell the call if 'this' is found
+void CExampleResolver::VerifyVersionL(const CImplementationInformation* aImplInfo, TBool& aMe) const
+	{
+	const TUid KMyImplUid = {0x10009E12};
+	if (aImplInfo->ImplementationUid() == KMyImplUid)
+		{
+		if (GetSignature() != aImplInfo->Version())
+			{
+			RDebug::Print(_L("ECOM: error registry has ver %d, binary has %d\n"), aImplInfo->Version(), GetSignature());
+			// leave with un-used cwcode. But even if ECOM will use this in
+			// the future, the code will not occur in a list request.
+			User::Leave(KEComErrMismatchedTags);
+			}
+		aMe = ETrue; // found myself
+		}
+	}
+
+// __________________________________________________________________________
+// Exported proxy for instantiation method resolution
+// Define the interface UIDs
+const TImplementationProxy ImplementationTable[] = 
+	{
+	IMPLEMENTATION_PROXY_ENTRY(0x10009E12, CExampleResolver::NewL)
+	};
+
+EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
+	{
+	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
+	return ImplementationTable;
+	}