--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Platforms/Generic/IOracleCommand.h	Wed May 24 22:33:20 2017 +0200
@@ -0,0 +1,42 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017 Osimis, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "../../Resources/Orthanc/Core/IDynamicObject.h"
+
+namespace OrthancStone
+{
+  class IOracleCommand : public Orthanc::IDynamicObject
+  {
+  public:
+    virtual ~IOracleCommand()
+    {
+    }
+
+    // This part of the command can be invoked simultaneously, and
+    // must not modify the Stone context
+    virtual void Execute() = 0;
+
+    // This part of the command must be invoked in mutual exclusion
+    virtual void Commit() = 0;
+  };
+}