fixup! DPL Analysis: introduce concepts and improve pack

Author: aalkin

Framework/Core/include/Framework/AnalysisHelpers.h

@@ -129,6 +129,7 @@ requires(!std::is_same_v<void, typename aod::MetadataTrait<T>::metadata>) struct
 
 template <template <o2::framework::OriginEnc, typename...> class T, o2::framework::OriginEnc ORIGIN, typename... C>
 struct Produces<T<ORIGIN, C...>> : WritingCursor<typename soa::PackToTable<ORIGIN, typename T<ORIGIN, C...>::table_t::persistent_columns_t>::table> {
+  using persistent_table_t = decltype([]() { if constexpr (soa::is_iterator<T<ORIGIN, C...>>) { return typename T<ORIGIN, C...>::parent_t{nullptr}; } else { return T<ORIGIN, C...>{nullptr}; } }());
 };
 
 /// Use this to group together produces. Useful to separate them logically

Framework/Core/include/Framework/AnalysisManagers.h

@@ -247,17 +247,17 @@ template <typename TABLE>
 struct OutputManager<Produces<TABLE>> {
   static bool appendOutput(std::vector<OutputSpec>& outputs, Produces<TABLE>& /*what*/, uint32_t)
   {
-    outputs.emplace_back(OutputForTable<TABLE>::spec());
+    outputs.emplace_back(OutputForTable<typename Produces<TABLE>::persistent_table_t>::spec());
     return true;
   }
   static bool prepare(ProcessingContext& context, Produces<TABLE>& what)
   {
-    what.resetCursor(std::move(context.outputs().make<TableBuilder>(OutputForTable<TABLE>::ref())));
+    what.resetCursor(std::move(context.outputs().make<TableBuilder>(OutputForTable<typename Produces<TABLE>::persistent_table_t>::ref())));
     return true;
   }
   static bool finalize(ProcessingContext&, Produces<TABLE>& what)
   {
-    what.setLabel(o2::aod::MetadataTrait<TABLE>::metadata::tableLabel());
+    what.setLabel(o2::aod::MetadataTrait<typename Produces<TABLE>::persistent_table_t>::metadata::tableLabel());
     what.release();
     return true;
   }