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diff --git a/sql/sql_cursor.h b/sql/sql_cursor.h
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+/* Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
+
+   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; version 2 of the License.
+
+   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, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+#ifndef _sql_cursor_h_
+#define _sql_cursor_h_
+
+#ifdef USE_PRAGMA_INTERFACE
+#pragma interface                              /* gcc class interface */
+#endif
+
+#include "sql_class.h"                          /* Query_arena */
+
+class JOIN;
+
+/**
+  @file
+
+  Declarations for implementation of server side cursors. Only
+  read-only non-scrollable cursors are currently implemented.
+*/
+
+/**
+  Server_side_cursor -- an interface for materialized
+  implementation of cursors. All cursors are self-contained
+  (created in their own memory root).  For that reason they must
+  be deleted only using a pointer to Server_side_cursor, not to
+  its base class.
+*/
+
+class Server_side_cursor: protected Query_arena
+{
+protected:
+  /** Row destination used for fetch */
+  select_result *result;
+public:
+  Server_side_cursor(MEM_ROOT *mem_root_arg, select_result *result_arg)
+    :Query_arena(mem_root_arg, STMT_INITIALIZED), result(result_arg)
+  {}
+
+  virtual bool is_open() const= 0;
+
+  virtual int open(JOIN *top_level_join)= 0;
+  virtual void fetch(ulong num_rows)= 0;
+  virtual void close()= 0;
+  virtual bool export_structure(THD *thd, Row_definition_list *defs)
+  {
+    DBUG_ASSERT(0);
+    return true;
+  }
+  virtual ~Server_side_cursor();
+
+  static void *operator new(size_t size, MEM_ROOT *mem_root)
+  { return alloc_root(mem_root, size); }
+  static void operator delete(void *ptr, size_t size);
+  static void operator delete(void *, MEM_ROOT *){}
+};
+
+
+int mysql_open_cursor(THD *thd, select_result *result,
+                      Server_side_cursor **res);
+
+#endif /* _sql_cusor_h_ */