system_view.h

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/* Copyright (c) 2017, 2024, Oracle and/or its affiliates.
 
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#ifndef DD__SYSTEM_VIEW_INCLUDED
#define DD__SYSTEM_VIEW_INCLUDED
 
#include "sql/dd/string_type.h"  // dd::String_type
 
namespace dd {
namespace system_views {
 
class System_view_definition;
 
/**
  This class represents base class for all INFORMATION_SCHEMA system views
  defined in sql/dd/impl/system_views/ headers.
*/
 
class System_view {
 public:
  virtual ~System_view() = default;
 
  /*
    Get name of system view.
 
    @return String containing name of view.
  */
  virtual const String_type &name() const = 0;
 
  /*
    Get SQL string containing CREATE VIEW definition to create the system view.
 
    @return SQL String.
  */
  virtual const System_view_definition *view_definition() const = 0;
 
  /*
    Check if the system view is to be hidden from users.
 
    @return true  If system view is hidden.
            false If system view is not hidden.
 
  */
  virtual bool hidden() const = 0;
};
 
}  // namespace system_views
}  // namespace dd
 
#endif  // DD__SYSTEM_VIEW_INCLUDED