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Fold API to leveled_sst

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Externally to leveled_sst all folds are actually managed through exapnd_list_by_pointer.

Make the API a bit clearer in this regards, and add specs to help dialyzer.

This also adds LowLastMod to the API for expanding pointers (although the leveled_penciller just defaults this to 0 for everything.
This commit is contained in:
Martin Sumner 2018-10-30 16:44:00 +00:00
parent bdd1762130
commit b7e697f7f0
2 changed files with 225 additions and 150 deletions
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18
src/leveled_penciller.erl
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@ -1519,10 +1519,11 @@ find_nextkey(QueryArray, LCnt,
% The first key at this level is pointer to a file - need to query
% the file to expand this level out before proceeding
Pointer = {next, Owner, StartKey, EndKey},
UpdList = leveled_sst:expand_list_by_pointer(Pointer,
RestOfKeys,
Width,
SegList),
UpdList = leveled_sst:sst_expandpointer(Pointer,
RestOfKeys,
Width,
SegList,
0),
NewEntry = {LCnt, UpdList},
% Need to loop around at this level (LCnt) as we have not yet
% examined a real key at this level
@ -1535,10 +1536,11 @@ find_nextkey(QueryArray, LCnt,
% The first key at this level is pointer within a file - need to
% query the file to expand this level out before proceeding
Pointer = {pointer, SSTPid, Slot, PSK, PEK},
UpdList = leveled_sst:expand_list_by_pointer(Pointer,
RestOfKeys,
Width,
SegList),
UpdList = leveled_sst:sst_expandpointer(Pointer,
RestOfKeys,
Width,
SegList,
0),
NewEntry = {LCnt, UpdList},
% Need to loop around at this level (LCnt) as we have not yet
% examined a real key at this level