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210055ad61
been applied. The patches are in the .tar.gz attachment at the end:
varchar-array.patch this patch adds support for arrays of bpchar() and
varchar(), which where always missing from postgres.
These datatypes can be used to replace the _char4,
_char8, etc., which were dropped some time ago.
block-size.patch this patch fixes many errors in the parser and other
program which happen with very large query statements
(> 8K) when using a page size larger than 8192.
This patch is needed if you want to submit queries
larger than 8K. Postgres supports tuples up to 32K
but you can't insert them because you can't submit
queries larger than 8K. My patch fixes this problem.
The patch also replaces all the occurrences of `8192'
and `1<<13' in the sources with the proper constants
defined in include files. You should now never find
8192 hardwired in C code, just to make code clearer.
--
Massimo Dal Zotto
176 lines
4.3 KiB
C
176 lines
4.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* postgres.h
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* definition of (and support for) postgres system types.
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* this file is included by almost every .c in the system
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*
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* Copyright (c) 1995, Regents of the University of California
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*
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* $Id: postgres.h,v 1.22 1999/05/03 19:10:14 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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/*
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* NOTES
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* this file will eventually contain the definitions for the
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* following (and perhaps other) system types:
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*
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* int2 int4 float4 float8
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* Oid regproc RegProcedure
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* aclitem
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* struct varlena
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* int28 oid8
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* bytea text
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* NameData Name
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*
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* TABLE OF CONTENTS
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* 1) simple type definitions
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* 2) varlena and array types
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* 3) TransactionId and CommandId
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* 4) genbki macros used by catalog/pg_xxx.h files
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* 5) random CSIGNBIT, MAXPGPATH, STATUS macros
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*
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* ----------------------------------------------------------------
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*/
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#ifndef POSTGRES_H
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#define POSTGRES_H
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#include "postgres_ext.h"
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#ifndef WIN32
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#include "config.h"
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#endif
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#include "c.h"
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#include "utils/elog.h"
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#include "utils/palloc.h"
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/* ----------------------------------------------------------------
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* Section 1: simple type definitions
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* ----------------------------------------------------------------
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*/
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typedef int16 int2;
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typedef int32 int4;
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typedef float float4;
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typedef double float8;
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typedef int4 aclitem;
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#define InvalidOid 0
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#define OidIsValid(objectId) ((bool) (objectId != InvalidOid))
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/* unfortunately, both regproc and RegProcedure are used */
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typedef Oid regproc;
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typedef Oid RegProcedure;
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/* ptr to func returning (char *) */
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typedef char *((*func_ptr) ());
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#define RegProcedureIsValid(p) OidIsValid(p)
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/* ----------------------------------------------------------------
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* Section 2: variable length and array types
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* ----------------------------------------------------------------
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*/
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/* ----------------
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* struct varlena
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* ----------------
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*/
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struct varlena
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{
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int32 vl_len;
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char vl_dat[1];
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};
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#define VARSIZE(PTR) (((struct varlena *)(PTR))->vl_len)
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#define VARDATA(PTR) (((struct varlena *)(PTR))->vl_dat)
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#define VARHDRSZ sizeof(int32)
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typedef struct varlena bytea;
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typedef struct varlena text;
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typedef int2 int28[8];
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typedef Oid oid8[8];
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/* We want NameData to have length NAMEDATALEN and int alignment,
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* because that's how the data type 'name' is defined in pg_type.
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* Use a union to make sure the compiler agrees.
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*/
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typedef union nameData
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{
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char data[NAMEDATALEN];
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int alignmentDummy;
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} NameData;
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typedef NameData *Name;
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/* ----------------------------------------------------------------
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* Section 3: TransactionId and CommandId
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* ----------------------------------------------------------------
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*/
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typedef uint32 TransactionId;
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#define InvalidTransactionId 0
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typedef uint32 CommandId;
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#define FirstCommandId 0
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/* ----------------------------------------------------------------
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* Section 4: genbki macros used by the
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* catalog/pg_xxx.h files
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* ----------------------------------------------------------------
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*/
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#define CATALOG(x) \
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typedef struct CppConcat(FormData_,x)
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#define DATA(x) extern int errno
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#define DESCR(x) extern int errno
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#define DECLARE_INDEX(x) extern int errno
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#define BUILD_INDICES
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#define BOOTSTRAP
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#define BKI_BEGIN
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#define BKI_END
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/* ----------------------------------------------------------------
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* Section 5: random stuff
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* CSIGNBIT, MAXPGPATH, STATUS...
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* ----------------------------------------------------------------
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*/
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/* msb for int/unsigned */
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#define ISIGNBIT (0x80000000)
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#define WSIGNBIT (0x8000)
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/* msb for char */
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#define CSIGNBIT (0x80)
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/* ----------------
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* global variables which should probably go someplace else.
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* ----------------
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*/
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#define MAXPGPATH 128
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#define MAX_QUERY_SIZE (BLCKSZ*2)
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#define STATUS_OK (0)
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#define STATUS_ERROR (-1)
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#define STATUS_NOT_FOUND (-2)
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#define STATUS_INVALID (-3)
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#define STATUS_UNCATALOGUED (-4)
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#define STATUS_REPLACED (-5)
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#define STATUS_NOT_DONE (-6)
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#define STATUS_BAD_PACKET (-7)
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#define STATUS_FOUND (1)
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/* ---------------
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* Cyrillic on the fly charsets recode
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* ---------------
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*/
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#ifdef CYR_RECODE
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void SetCharSet();
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#endif /* CYR_RECODE */
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#endif /* POSTGRES_H */
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