--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancServer/Scheduler/ServerCommandInstance.h	Fri Jul 04 14:14:14 2014 +0200
@@ -0,0 +1,98 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "../../Core/IDynamicObject.h"
+#include "IServerCommand.h"
+
+namespace Orthanc
+{
+  class ServerCommandInstance : public IDynamicObject
+  {
+    friend class ServerScheduler;
+
+  public:
+    class IListener
+    {
+    public:
+      virtual ~IListener()
+      {
+      }
+
+      virtual void SignalSuccess(const std::string& jobId) = 0;
+
+      virtual void SignalFailure(const std::string& jobId) = 0;
+    };
+
+  private:
+    typedef IServerCommand::ListOfStrings  ListOfStrings;
+
+    IServerCommand *filter_;
+    std::string jobId_;
+    ListOfStrings inputs_;
+    std::list<ServerCommandInstance*> next_;
+
+    bool Execute(IListener& listener);
+
+  public:
+    ServerCommandInstance(IServerCommand *filter,
+                         const std::string& jobId);
+
+    virtual ~ServerCommandInstance();
+
+    const std::string& GetJobId() const
+    {
+      return jobId_;
+    }
+
+    void AddInput(const std::string& input)
+    {
+      inputs_.push_back(input);
+    }
+
+    void ConnectNext(ServerCommandInstance& filter)
+    {
+      next_.push_back(&filter);
+    }
+
+    const std::list<ServerCommandInstance*>& GetNextCommands() const
+    {
+      return next_;
+    }
+
+    IServerCommand& GetCommand() const
+    {
+      return *filter_;
+    }
+  };
+}