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New HeapTuple structure/interface.

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This commit is contained in:
Vadim B. Mikheev
1998-11-27 19:33:35 +00:00
parent 4d7188039a
commit 2435c7d501
8 changed files with 119 additions and 106 deletions
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27
src/include/access/heapam.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: heapam.h,v 1.38 1998/10/08 18:30:22 momjian Exp $
* $Id: heapam.h,v 1.39 1998/11/27 19:33:31 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -89,6 +89,10 @@ typedef HeapAccessStatisticsData *HeapAccessStatistics;
*
* ----------------
*/
extern Datum nocachegetattr(HeapTuple tup, int attnum,
TupleDesc att, bool *isnull);
#if !defined(DISABLE_COMPLEX_MACRO)
#define fastgetattr(tup, attnum, tupleDesc, isnull) \
@@ -101,7 +105,7 @@ typedef HeapAccessStatisticsData *HeapAccessStatistics;
(attnum) == 1) ? \
( \
(Datum)fetchatt(&((tupleDesc)->attrs[(attnum)-1]), \
(char *) (tup) + (tup)->t_hoff + \
(char *) (tup)->t_data + (tup)->t_data->t_hoff + \
( \
((attnum) != 1) ? \
(tupleDesc)->attrs[(attnum)-1]->attcacheoff \
@@ -115,7 +119,7 @@ typedef HeapAccessStatisticsData *HeapAccessStatistics;
) \
: \
( \
att_isnull((attnum)-1, (tup)->t_bits) ? \
att_isnull((attnum)-1, (tup)->t_data->t_bits) ? \
( \
((isnull) ? (*(isnull) = true) : (dummyret)NULL), \
(Datum)NULL \
@@ -129,9 +133,6 @@ typedef HeapAccessStatisticsData *HeapAccessStatistics;
#else /* !defined(DISABLE_COMPLEX_MACRO) */
extern Datum nocachegetattr(HeapTuple tup, int attnum,
TupleDesc att, bool *isnull);
static Datum
fastgetattr(HeapTuple tup, int attnum, TupleDesc tupleDesc,
bool *isnull)
@@ -146,7 +147,7 @@ fastgetattr(HeapTuple tup, int attnum, TupleDesc tupleDesc,
(attnum) == 1) ?
(
(Datum) fetchatt(&((tupleDesc)->attrs[(attnum) - 1]),
(char *) (tup) + (tup)->t_hoff +
(char *) (tup)->t_data + (tup)->t_data->t_hoff +
(
((attnum) != 1) ?
(tupleDesc)->attrs[(attnum) - 1]->attcacheoff
@@ -160,7 +161,7 @@ fastgetattr(HeapTuple tup, int attnum, TupleDesc tupleDesc,
)
:
(
att_isnull((attnum) - 1, (tup)->t_bits) ?
att_isnull((attnum) - 1, (tup)->t_data->t_bits) ?
(
((isnull) ? (*(isnull) = true) : (dummyret) NULL),
(Datum) NULL
@@ -205,7 +206,7 @@ fastgetattr(HeapTuple tup, int attnum, TupleDesc tupleDesc,
AssertMacro((tup) != NULL && \
(attnum) > FirstLowInvalidHeapAttributeNumber && \
(attnum) != 0), \
((attnum) > (int) (tup)->t_natts) ? \
((attnum) > (int) (tup)->t_data->t_natts) ? \
( \
((isnull) ? (*(isnull) = true) : (dummyret)NULL), \
(Datum)NULL \
@@ -221,13 +222,12 @@ fastgetattr(HeapTuple tup, int attnum, TupleDesc tupleDesc,
((isnull) ? (*(isnull) = false) : (dummyret)NULL), \
((attnum) == SelfItemPointerAttributeNumber) ? \
( \
(Datum)((char *)(tup) + \
heap_sysoffset[-SelfItemPointerAttributeNumber-1]) \
(Datum)((char *)&((tup)->t_self)) \
) \
: \
( \
(Datum)*(unsigned int *) \
((char *)(tup) + heap_sysoffset[-(attnum)-1]) \
((char *)(tup)->t_data + heap_sysoffset[-(attnum)-1]) \
) \
) \
) \
@@ -251,7 +251,7 @@ extern HeapScanDesc heap_beginscan(Relation relation, int atend,
extern void heap_rescan(HeapScanDesc scan, bool scanFromEnd, ScanKey key);
extern void heap_endscan(HeapScanDesc scan);
extern HeapTuple heap_getnext(HeapScanDesc scandesc, int backw);
extern HeapTuple heap_fetch(Relation relation, Snapshot snapshot, ItemPointer tid, Buffer *userbuf);
extern void heap_fetch(Relation relation, Snapshot snapshot, HeapTuple tup, Buffer *userbuf);
extern Oid heap_insert(Relation relation, HeapTuple tup);
extern int heap_delete(Relation relation, ItemPointer tid);
extern int heap_replace(Relation relation, ItemPointer otid,
@@ -270,6 +270,7 @@ extern bool heap_sysattrbyval(AttrNumber attno);
extern Datum nocachegetattr(HeapTuple tup, int attnum,
TupleDesc att, bool *isnull);
extern HeapTuple heap_copytuple(HeapTuple tuple);
extern void heap_copytuple_with_tuple(HeapTuple src, HeapTuple dest);
extern HeapTuple heap_formtuple(TupleDesc tupleDescriptor,
Datum *value, char *nulls);
extern HeapTuple heap_modifytuple(HeapTuple tuple,