From 9184389ada46a2bfe88ad6aafd79f133a7c97efd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Carsten=20Gr=C3=A4ser?= <graeser@dune-project.org>
Date: Sat, 7 Oct 2017 01:55:16 +0200
Subject: [PATCH] Allow to set transfer operators from vector of objects

Before you could only set this from a vector of (smart) pointers
---
 dune/solvers/iterationsteps/multigridstep.hh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/dune/solvers/iterationsteps/multigridstep.hh b/dune/solvers/iterationsteps/multigridstep.hh
index dc7f667d..a81d9de8 100644
--- a/dune/solvers/iterationsteps/multigridstep.hh
+++ b/dune/solvers/iterationsteps/multigridstep.hh
@@ -117,6 +117,20 @@ namespace Dune {
                 mgTransfer_[j] = transfer[j].get();
         }
 
+        /**
+         * \brief Set transfer operator hierarchy from vector.
+         *
+         * Be careful: The Multigrid step will not copy the transfer operators
+         * or share ownership
+         */
+        template <class DerivedTransfer>
+        void setTransferOperators(const std::vector<DerivedTransfer>& transfer)
+        {
+            mgTransfer_.resize(transfer.size());
+            for(size_t j=0; j<transfer.size(); ++j)
+                mgTransfer_[j] = &transfer[j];
+        }
+
         virtual void iterate();
 
         virtual void nestedIteration();
-- 
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