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71ed7eb494
pghackers discussion of 5-Jan-2000. The amopselect and amopnpages estimators are gone, and in their place is a per-AM amcostestimate procedure (linked to from pg_am, not pg_amop).
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* genam.h
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* POSTGRES general access method definitions.
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: genam.h,v 1.22 2000/01/22 23:50:22 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef GENAM_H
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#define GENAM_H
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#include "access/funcindex.h"
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#include "access/itup.h"
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#include "access/relscan.h"
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#include "access/sdir.h"
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/* ----------------
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* generalized index_ interface routines
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* ----------------
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*/
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extern Relation index_open(Oid relationId);
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extern Relation index_openr(char *relationName);
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extern void index_close(Relation relation);
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extern InsertIndexResult index_insert(Relation relation,
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Datum *datum, char *nulls,
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ItemPointer heap_t_ctid,
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Relation heapRel);
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extern void index_delete(Relation relation, ItemPointer indexItem);
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extern IndexScanDesc index_beginscan(Relation relation, bool scanFromEnd,
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uint16 numberOfKeys, ScanKey key);
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extern void index_rescan(IndexScanDesc scan, bool scanFromEnd, ScanKey key);
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extern void index_endscan(IndexScanDesc scan);
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extern void index_markpos(IndexScanDesc scan);
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extern void index_restrpos(IndexScanDesc scan);
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extern RetrieveIndexResult index_getnext(IndexScanDesc scan,
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ScanDirection direction);
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extern RegProcedure index_cost_estimator(Relation relation);
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extern RegProcedure index_getprocid(Relation irel, AttrNumber attnum,
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uint16 procnum);
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extern Datum GetIndexValue(HeapTuple tuple, TupleDesc hTupDesc,
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int attOff, AttrNumber *attrNums, FuncIndexInfo *fInfo,
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bool *attNull);
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/* in genam.c */
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extern IndexScanDesc RelationGetIndexScan(Relation relation, bool scanFromEnd,
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uint16 numberOfKeys, ScanKey key);
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extern void IndexScanEnd(IndexScanDesc scan);
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#endif /* GENAM_H */
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