rdelaage/postgresql
1
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2024-09-30 08:11:17 +02:00
Code Issues Packages Projects Releases Wiki Activity
7403561c0f
postgresql/src/include/access/tupconvert.h

46 lines
1.3 KiB
C
Raw Normal View History

Improve plpgsql's ability to cope with rowtypes containing dropped columns, by supporting conversions in places that used to demand exact rowtype match. Since this issue is certain to come up elsewhere (in fact, already has, in ExecEvalConvertRowtype), factor out the support code into new core functions for tuple conversion. I chose to put these in a new source file since heaptuple.c is already overly long. Heavily revised version of a patch by Pavel Stehule.
2009-08-06 22:44:32 +02:00
/*-------------------------------------------------------------------------
*
* tupconvert.h
* Tuple conversion support.
*
*
Update copyright via script for 2017
2017-01-03 19:48:53 +01:00
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
Improve plpgsql's ability to cope with rowtypes containing dropped columns, by supporting conversions in places that used to demand exact rowtype match. Since this issue is certain to come up elsewhere (in fact, already has, in ExecEvalConvertRowtype), factor out the support code into new core functions for tuple conversion. I chose to put these in a new source file since heaptuple.c is already overly long. Heavily revised version of a patch by Pavel Stehule.
2009-08-06 22:44:32 +02:00
* Portions Copyright (c) 1994, Regents of the University of California
*
Remove cvs keywords from all files.
2010-09-20 22:08:53 +02:00
* src/include/access/tupconvert.h
Improve plpgsql's ability to cope with rowtypes containing dropped columns, by supporting conversions in places that used to demand exact rowtype match. Since this issue is certain to come up elsewhere (in fact, already has, in ExecEvalConvertRowtype), factor out the support code into new core functions for tuple conversion. I chose to put these in a new source file since heaptuple.c is already overly long. Heavily revised version of a patch by Pavel Stehule.
2009-08-06 22:44:32 +02:00
*
*-------------------------------------------------------------------------
*/
#ifndef TUPCONVERT_H
#define TUPCONVERT_H
#include "access/htup.h"
Split tuple struct defs from htup.h to htup_details.h This reduces unnecessary exposure of other headers through htup.h, which is very widely included by many files. I have chosen to move the function prototypes to the new file as well, because that means htup.h no longer needs to include tupdesc.h. In itself this doesn't have much effect in indirect inclusion of tupdesc.h throughout the tree, because it's also required by execnodes.h; but it's something to explore in the future, and it seemed best to do the htup.h change now while I'm busy with it.
2012-08-30 22:15:44 +02:00
#include "access/tupdesc.h"
Improve plpgsql's ability to cope with rowtypes containing dropped columns, by supporting conversions in places that used to demand exact rowtype match. Since this issue is certain to come up elsewhere (in fact, already has, in ExecEvalConvertRowtype), factor out the support code into new core functions for tuple conversion. I chose to put these in a new source file since heaptuple.c is already overly long. Heavily revised version of a patch by Pavel Stehule.
2009-08-06 22:44:32 +02:00
typedef struct TupleConversionMap
{
TupleDesc indesc; /* tupdesc for source rowtype */
TupleDesc outdesc; /* tupdesc for result rowtype */
AttrNumber *attrMap; /* indexes of input fields, or 0 for null */
Datum *invalues; /* workspace for deconstructing source */
bool *inisnull;
Datum *outvalues; /* workspace for constructing result */
bool *outisnull;
} TupleConversionMap;
extern TupleConversionMap *convert_tuples_by_position(TupleDesc indesc,
pgindent run for 9.0
2010-02-26 03:01:40 +01:00
TupleDesc outdesc,
const char *msg);
Improve plpgsql's ability to cope with rowtypes containing dropped columns, by supporting conversions in places that used to demand exact rowtype match. Since this issue is certain to come up elsewhere (in fact, already has, in ExecEvalConvertRowtype), factor out the support code into new core functions for tuple conversion. I chose to put these in a new source file since heaptuple.c is already overly long. Heavily revised version of a patch by Pavel Stehule.
2009-08-06 22:44:32 +02:00
extern TupleConversionMap *convert_tuples_by_name(TupleDesc indesc,
pgindent run for 9.0
2010-02-26 03:01:40 +01:00
TupleDesc outdesc,
const char *msg);
Improve plpgsql's ability to cope with rowtypes containing dropped columns, by supporting conversions in places that used to demand exact rowtype match. Since this issue is certain to come up elsewhere (in fact, already has, in ExecEvalConvertRowtype), factor out the support code into new core functions for tuple conversion. I chose to put these in a new source file since heaptuple.c is already overly long. Heavily revised version of a patch by Pavel Stehule.
2009-08-06 22:44:32 +02:00
extern HeapTuple do_convert_tuple(HeapTuple tuple, TupleConversionMap *map);
extern void free_conversion_map(TupleConversionMap *map);
#endif /* TUPCONVERT_H */
Reference in New Issue Copy Permalink