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Refactor the internal GIN B-tree interface for forming a downlink.

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This creates a new gin-btree callback function for creating a downlink for
a page. Previously, ginxlog.c duplicated the logic used during normal
operation.
This commit is contained in:
Heikki Linnakangas
2013-11-20 16:57:41 +02:00
parent 04965ad40e
commit 501012631e
5 changed files with 38 additions and 40 deletions
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2
src/include/access/gin_private.h
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@@ -487,6 +487,7 @@ typedef struct GinBtreeData
OffsetNumber (*findChildPtr) (GinBtree, Page, BlockNumber, OffsetNumber);
bool (*placeToPage) (GinBtree, Buffer, OffsetNumber, XLogRecData **);
Page (*splitPage) (GinBtree, Buffer, Buffer, OffsetNumber, XLogRecData **);
void (*prepareDownlink) (GinBtree, Buffer);
void (*fillRoot) (GinBtree, Buffer, Buffer, Buffer);
bool isData;
@@ -529,7 +530,6 @@ extern void ginPrepareEntryScan(GinBtree btree, OffsetNumber attnum,
Datum key, GinNullCategory category,
GinState *ginstate);
extern void ginEntryFillRoot(GinBtree btree, Buffer root, Buffer lbuf, Buffer rbuf);
extern IndexTuple ginPageGetLinkItup(Buffer buf);
/* gindatapage.c */
extern BlockNumber createPostingTree(Relation index,