Method callback

sql/sql_cache.h:228–228

  inline uint8 type()                        { return table_type; }
  inline void type(uint8 t)                  { table_type= t; }
  inline qc_engine_callback callback()       { return callback_func; }
  inline void callback(qc_engine_callback fn){ callback_func= fn; }
  inline ulonglong engine_data()             { return engine_data_buff; }
  inline void engine_data(ulonglong data_arg){ engine_data_buff= data_arg; }