LMDB flags MDB_REVERSEKEY and MDB_REVERSEDUP specify that keys and values are compared (not sorted) in reverse order (from last byte to to the first). Property reversed_flag can be specified to be std::true_type in key or value trait to propagate corresponding flags into lmdb database settings (functionality is already implemented);
It is required to verify the behaviour by integration tests:
implement traits for std::string with the reversed_flag;
check that the sorting respects reversed key comparison order.
vvish
commented
1 year ago
LMDB flags
MDB_REVERSEKEYandMDB_REVERSEDUPspecify that keys and values are compared (not sorted) in reverse order (from last byte to to the first). Propertyreversed_flagcan be specified to bestd::true_typein key or value trait to propagate corresponding flags into lmdb database settings (functionality is already implemented);It is required to verify the behaviour by integration tests:
std::stringwith thereversed_flag;