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Commitd223293

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committed
implement forward-backward scan, right now its only used only for ordering by add info
1 parentdd83c34 commitd223293

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4 files changed

+180
-58
lines changed

4 files changed

+180
-58
lines changed

‎rum.h

Lines changed: 6 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -96,7 +96,7 @@ typedef struct RumMetaPageData
9696
int64nEntries;
9797
}RumMetaPageData;
9898

99-
#defineRUM_CURRENT_VERSION(0xC0DE0001)
99+
#defineRUM_CURRENT_VERSION(0xC0DE0002)
100100

101101
#defineRumPageGetMeta(p) \
102102
((RumMetaPageData *) PageGetContents(p))
@@ -149,9 +149,9 @@ typedef struct RumMetaPageData
149149
(RumItemPointerGetOffsetNumber(p) == (OffsetNumber)0 && \
150150
RumItemPointerGetBlockNumber(p) == (BlockNumber)0)
151151
#defineItemPointerSetMax(p) \
152-
ItemPointerSet((p), InvalidBlockNumber, (OffsetNumber)0xffff)
152+
ItemPointerSet((p), InvalidBlockNumber, (OffsetNumber)0xfffe)
153153
#defineItemPointerIsMax(p) \
154-
(RumItemPointerGetOffsetNumber(p) == (OffsetNumber)0xffff && \
154+
(RumItemPointerGetOffsetNumber(p) == (OffsetNumber)0xfffe && \
155155
RumItemPointerGetBlockNumber(p) == InvalidBlockNumber)
156156
#defineItemPointerSetLossyPage(p,b) \
157157
ItemPointerSet((p), (b), (OffsetNumber)0xffff)
@@ -641,8 +641,8 @@ typedef struct RumScanEntryData
641641
/* used for Posting list and one page in Posting tree */
642642
RumKey*list;
643643
MemoryContextcontext;
644-
uint32nlist;
645-
OffsetNumberoffset;
644+
int16nlist;
645+
int16offset;
646646

647647
ScanDirectionscanDirection;
648648
boolisFinished;
@@ -687,7 +687,7 @@ typedef struct RumScanOpaqueData
687687
booluseFastScan;
688688
TIDBitmap*tbm;
689689

690-
boolnaturalOrder;
690+
ScanDirectionnaturalOrder;
691691
}RumScanOpaqueData;
692692

693693
typedefRumScanOpaqueData*RumScanOpaque;

‎rum_timestamp.c

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -283,7 +283,10 @@ rum_timestamp_config(PG_FUNCTION_ARGS)
283283
config->strategyInfo[0].strategy=RUM_TMST_LEFT_DISTANCE;
284284
config->strategyInfo[0].direction=ForwardScanDirection;
285285

286-
config->strategyInfo[1].strategy=InvalidStrategy;
286+
config->strategyInfo[1].strategy=RUM_TMST_RIGHT_DISTANCE;
287+
config->strategyInfo[1].direction=BackwardScanDirection;
288+
289+
config->strategyInfo[2].strategy=InvalidStrategy;
287290

288291
PG_RETURN_VOID();
289292
}

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