--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Plugins/StorageBackend.h	Wed Jul 04 18:05:24 2018 +0200
@@ -0,0 +1,68 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2018 Osimis S.A., 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 "../Common/DatabaseManager.h"
+#include <orthanc/OrthancCDatabasePlugin.h>
+
+
+namespace OrthancDatabases
+{
+  class StorageBackend : public boost::noncopyable
+  {
+  private:
+    DatabaseManager   manager_;
+
+  protected:
+    DatabaseManager& GetManager()
+    {
+      return manager_;
+    }
+    
+  public:
+    StorageBackend(IDatabaseFactory* factory);
+
+    virtual ~StorageBackend()
+    {
+    }
+    
+    // WARNING: These methods can possibly be invoked simultaneously
+    // (no mutual exclusion in the storage area plugins)
+    virtual void Create(const std::string& uuid,
+                        const void* content,
+                        size_t size,
+                        OrthancPluginContentType type) = 0;
+
+    virtual void Read(void*& content,
+                      size_t& size,
+                      const std::string& uuid,
+                      OrthancPluginContentType type) = 0;
+
+    virtual void Remove(const std::string& uuid,
+                        OrthancPluginContentType type) = 0;
+
+    static void Register(OrthancPluginContext* context,
+                         StorageBackend* backend);   // Takes ownership
+
+    static void Finalize();
+  };
+}