PostgreSQL Source Code: src/include/access/tupconvert.h Source File

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tupconvert.h
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1/*-------------------------------------------------------------------------
2 *
3 * tupconvert.h
4 * Tuple conversion support.
5 *
6 *
7 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
9 *
10 * src/include/access/tupconvert.h
11 *
12 *-------------------------------------------------------------------------
13 */
14#ifndef TUPCONVERT_H
15#define TUPCONVERT_H
16
17#include "access/attmap.h"
18#include "access/htup.h"
19#include "access/tupdesc.h"
20#include "executor/tuptable.h"
21#include "nodes/bitmapset.h"
22
23
24 typedef struct TupleConversionMap
25{
26 TupleDesc indesc; /* tupdesc for source rowtype */
27 TupleDesc outdesc; /* tupdesc for result rowtype */
28 AttrMap *attrMap; /* indexes of input fields, or 0 for null */
29 Datum *invalues; /* workspace for deconstructing source */
30 bool *inisnull;
31 Datum *outvalues; /* workspace for constructing result */
32 bool *outisnull;
33 } TupleConversionMap;
34
35
36extern TupleConversionMap *convert_tuples_by_position(TupleDesc indesc,
37 TupleDesc outdesc,
38 const char *msg);
39
40extern TupleConversionMap *convert_tuples_by_name(TupleDesc indesc,
41 TupleDesc outdesc);
42extern TupleConversionMap *convert_tuples_by_name_attrmap(TupleDesc indesc,
43 TupleDesc outdesc,
44 AttrMap *attrMap);
45
46extern HeapTuple execute_attr_map_tuple(HeapTuple tuple, TupleConversionMap *map);
47extern TupleTableSlot *execute_attr_map_slot(AttrMap *attrMap,
48 TupleTableSlot *in_slot,
49 TupleTableSlot *out_slot);
50extern Bitmapset *execute_attr_map_cols(AttrMap *attrMap, Bitmapset *in_cols);
51
52extern void free_conversion_map(TupleConversionMap *map);
53
54#endif /* TUPCONVERT_H */
uint64_t Datum
Definition: postgres.h:70
Definition: attmap.h:35
bool * inisnull
Definition: tupconvert.h:30
bool * outisnull
Definition: tupconvert.h:32
Datum * invalues
Definition: tupconvert.h:29
AttrMap * attrMap
Definition: tupconvert.h:28
Datum * outvalues
Definition: tupconvert.h:31
TupleDesc outdesc
Definition: tupconvert.h:27
TupleDesc indesc
Definition: tupconvert.h:26
TupleConversionMap * convert_tuples_by_name(TupleDesc indesc, TupleDesc outdesc)
Definition: tupconvert.c:103
void free_conversion_map(TupleConversionMap *map)
Definition: tupconvert.c:300
TupleConversionMap * convert_tuples_by_position(TupleDesc indesc, TupleDesc outdesc, const char *msg)
Definition: tupconvert.c:60
struct TupleConversionMap TupleConversionMap
TupleConversionMap * convert_tuples_by_name_attrmap(TupleDesc indesc, TupleDesc outdesc, AttrMap *attrMap)
Definition: tupconvert.c:125
TupleTableSlot * execute_attr_map_slot(AttrMap *attrMap, TupleTableSlot *in_slot, TupleTableSlot *out_slot)
Definition: tupconvert.c:193
Bitmapset * execute_attr_map_cols(AttrMap *attrMap, Bitmapset *in_cols)
Definition: tupconvert.c:253
HeapTuple execute_attr_map_tuple(HeapTuple tuple, TupleConversionMap *map)
Definition: tupconvert.c:155

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