system_view_definition.h

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/* Copyright (c) 2017, 2022, Oracle and/or its affiliates.
 
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   it under the terms of the GNU General Public License, version 2.0,
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#ifndef DD__SYSTEM_VIEW_DEFINITION_INCLUDED
#define DD__SYSTEM_VIEW_DEFINITION_INCLUDED
 
#include "sql/dd/string_type.h"  // dd::String_type
 
namespace dd {
namespace system_views {
 
/*
  The purpose of this interface is to prepare the DDL statements
  necessary to create a I_S table.
*/
 
class System_view_definition {
 public:
  virtual ~System_view_definition() = default;
 
  /**
    Build CREATE VIEW DDL statement for the system view.
 
    @return String_type containing the DDL statement for the target view.
  */
  virtual String_type build_ddl_create_view() const = 0;
};
 
}  // namespace system_views
}  // namespace dd
 
#endif  // DD__SYSTEM_VIEW_DEFINITION_INCLUDED