character_sets.h

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#ifndef DD_TABLES__CHARACTER_SETS_INCLUDED
#define DD_TABLES__CHARACTER_SETS_INCLUDED
 
#include <string>
 
#include "sql/dd/impl/types/entity_object_table_impl.h"
#include "sql/dd/string_type.h"
#include "sql/dd/types/charset.h"
 
class THD;
 
struct CHARSET_INFO;
 
namespace dd {
class Global_name_key;
class Raw_record;
 
namespace tables {
 
///////////////////////////////////////////////////////////////////////////
 
class Character_sets : public Entity_object_table_impl {
 public:
  static const Character_sets &instance();
 
  static const CHARSET_INFO *name_collation();
 
  enum enum_fields {
    FIELD_ID = static_cast<uint>(Common_field::ID),
    FIELD_NAME,
    FIELD_DEFAULT_COLLATION_ID,
    FIELD_COMMENT,
    FIELD_MB_MAX_LENGTH,
    FIELD_OPTIONS,
    NUMBER_OF_FIELDS  // Always keep this entry at the end of the enum
  };
 
  enum enum_indexes {
    INDEX_PK_ID = static_cast<uint>(Common_index::PK_ID),
    INDEX_UK_NAME = static_cast<uint>(Common_index::UK_NAME),
    INDEX_UK_DEFAULT_COLLATION_ID
  };
 
  enum enum_foreign_keys { FK_DEFAULT_COLLATION_ID };
 
  Character_sets();
 
  bool populate(THD *thd) const override;
 
  // Charset objects are not created and cached, the keys are just referenced
  // in FK constraints from other tables. Accessing charset information from
  // within the server is done against the 'all_charsets' global structure.
  Charset *create_entity_object(const Raw_record &) const override;
 
  static bool update_object_key(Global_name_key *key,
                                const String_type &charset_name);
};
 
///////////////////////////////////////////////////////////////////////////
 
}  // namespace tables
}  // namespace dd
 
#endif  // DD_TABLES__CHARACTER_SETS_INCLUDED