Add tentative DatabaseCommunicator

include/atrip/DatabaseCommunicator.hpp

@@ -0,0 +1,20 @@
+#pragma once
+#include <atrip/Utils.hpp>
+#include <atrip/Equations.hpp>
+#include <atrip/SliceUnion.hpp>
+#include <atrip/Unions.hpp>
+
+namespace atrip {
+
+  template <typename F>
+  using Unions = std::vector<SliceUnion<F>*>;
+
+  template <typename F>
+  typename Slice<F>::Database
+  naiveDatabase(Unions<F> &unions,
+                size_t nv,
+                size_t np,
+                size_t iteration,
+                MPI_Comm const& c);
+
+}  // namespace atrip