foreign_key_column_usage.h

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#ifndef DD_TABLES__FOREIGN_KEY_COLUMN_USAGE_INCLUDED
#define DD_TABLES__FOREIGN_KEY_COLUMN_USAGE_INCLUDED

#include "sql/dd/impl/types/object_table_impl.h"  // dd::Object_table_impl
#include "sql/dd/object_id.h"                     // dd::Object_id
#include "sql/dd/string_type.h"

namespace dd {
class Object_key;

namespace tables {

///////////////////////////////////////////////////////////////////////////

class Foreign_key_column_usage : public Object_table_impl {
 public:
  static const Foreign_key_column_usage &instance();

  enum enum_fields {
    FIELD_FOREIGN_KEY_ID,
    FIELD_ORDINAL_POSITION,
    FIELD_COLUMN_ID,
    FIELD_REFERENCED_COLUMN_NAME,
    NUMBER_OF_FIELDS  // Always keep this entry at the end of the enum
  };

  enum enum_indexes {
    INDEX_PK_FOREIGN_KEY_ID_ORDINAL_POSITION,
    INDEX_UK_FOREIGN_KEY_ID_COLUMN_ID,
    INDEX_K_COLUMN_ID
  };

  enum enum_foreign_keys { FK_FOREIGN_KEY_ID, FK_COLUMN_ID };

  Foreign_key_column_usage();

  static Object_key *create_key_by_foreign_key_id(Object_id fk_id);

  static Object_key *create_primary_key(Object_id fk_id, int ordinal_position);
};

///////////////////////////////////////////////////////////////////////////

}  // namespace tables
}  // namespace dd

#endif  // DD_TABLES__FOREIGN_KEY_COLUMN_USAGE_INCLUDED