WRAP_SECONDARY_SIMPLE_TYPE

#define WRAP_SECONDARY_SIMPLE_TYPE	(		IDX,
			TYPE
	)

Макроопределение:

template<>\
struct secondary_index_db_functions<TYPE> {\
   static int32_t db_idx_next( int32_t iterator, uint64_t* primary )          { return internal_use_do_not_use::db_##IDX##_next( iterator, primary ); } \
   static int32_t db_idx_previous( int32_t iterator, uint64_t* primary )      { return internal_use_do_not_use::db_##IDX##_previous( iterator, primary ); } \
   static void    db_idx_remove( int32_t iterator  )                          { internal_use_do_not_use::db_##IDX##_remove( iterator ); } \
   static int32_t db_idx_end( uint64_t code, uint64_t scope, uint64_t table ) { return internal_use_do_not_use::db_##IDX##_end( code, scope, table ); } \
   static int32_t db_idx_store( uint64_t scope, uint64_t table, uint64_t payer, uint64_t id, const TYPE& secondary ) {\
     return internal_use_do_not_use::db_##IDX##_store( scope, table, payer, id, &secondary ); \
   }\
   static void    db_idx_update( int32_t iterator, uint64_t payer, const TYPE& secondary ) {\
     internal_use_do_not_use::db_##IDX##_update( iterator, payer, &secondary ); \
   }\
   static int32_t db_idx_find_primary( uint64_t code, uint64_t scope, uint64_t table, uint64_t primary, TYPE& secondary ) {\
     return internal_use_do_not_use::db_##IDX##_find_primary( code, scope, table, &secondary, primary ); \
   }\
   static int32_t db_idx_find_secondary( uint64_t code, uint64_t scope, uint64_t table, const TYPE& secondary, uint64_t& primary ) {\
     return internal_use_do_not_use::db_##IDX##_find_secondary( code, scope, table, &secondary, &primary ); \
   }\
   static int32_t db_idx_lowerbound( uint64_t code, uint64_t scope, uint64_t table, TYPE& secondary, uint64_t& primary ) {\
     return internal_use_do_not_use::db_##IDX##_lowerbound( code, scope, table, &secondary, &primary ); \
   }\
   static int32_t db_idx_upperbound( uint64_t code, uint64_t scope, uint64_t table, TYPE& secondary, uint64_t& primary ) {\
     return internal_use_do_not_use::db_##IDX##_upperbound( code, scope, table, &secondary, &primary ); \
   }\
};

См. определение в файле multi_index.hpp строка 244