1 files changed, 58 insertions, 0 deletions
diff --git a/ACE/TAO/tao/PortableServer/Upcall_Command.h b/ACE/TAO/tao/PortableServer/Upcall_Command.h
new file mode 100644
index 00000000000..8ba85735a94
--- /dev/null
+++ b/ACE/TAO/tao/PortableServer/Upcall_Command.h
@@ -0,0 +1,58 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file    Upcall_Command.h
+ *
+ *  $Id$
+ *
+ *  @author Ossama Othman
+ */
+//=============================================================================
+
+#ifndef TAO_UPCALL_COMMAND_H
+#define TAO_UPCALL_COMMAND_H
+
+#include /**/ "ace/pre.h"
+
+#include "tao/PortableServer/portableserver_export.h"
+
+#ifndef ACE_LACKS_PRAGMA_ONCE
+# pragma once
+#endif /* !ACE_LACKS_PRAGMA_ONCE */
+
+#include "tao/Versioned_Namespace.h"
+
+TAO_BEGIN_VERSIONED_NAMESPACE_DECL
+
+namespace TAO
+{
+  /**
+   * @class Upcall_Command
+   *
+   * @brief "ABC" that all operation-specific command objects must
+   *        subclass.
+   *
+   * The actual upcall into a servant is executed through a concrete
+   * @c Upcall_Command object.  This is necessary to simplify upcall
+   * interactions in the presence of interceptors, such as when the
+   * @c send_exception() interception point must be invoked when the
+   * servant operation throws an exception.
+   */
+  class TAO_PortableServer_Export Upcall_Command
+  {
+  public:
+    /// Destructor.
+    virtual ~Upcall_Command (void);
+
+    /// Execute the upcall.
+    virtual void execute (void) = 0;
+  };
+
+}  // End namespace TAO
+
+TAO_END_VERSIONED_NAMESPACE_DECL
+
+#include /**/ "ace/post.h"
+
+#endif /* TAO_UPCALL_COMMAND_H */