postgresql/contrib/hstore/hstore.h
Alvaro Herrera f8c4d7db60 Restructure some header files a bit, in particular heapam.h, by removing some
unnecessary #include lines in it.  Also, move some tuple routine prototypes and
macros to htup.h, which allows removal of heapam.h inclusion from some .c
files.

For this to work, a new header file access/sysattr.h needed to be created,
initially containing attribute numbers of system columns, for pg_dump usage.

While at it, make contrib ltree, intarray and hstore header files more
consistent with our header style.
2008-05-12 00:00:54 +00:00

52 lines
1.0 KiB
C

/*
* $PostgreSQL: pgsql/contrib/hstore/hstore.h,v 1.6 2008/05/12 00:00:42 alvherre Exp $
*/
#ifndef __HSTORE_H__
#define __HSTORE_H__
#include "fmgr.h"
typedef struct
{
uint16 keylen;
uint16 vallen;
uint32
valisnull:1,
pos:31;
} HEntry;
typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
int4 size;
char data[1];
} HStore;
#define HSHRDSIZE (VARHDRSZ + sizeof(int4))
#define CALCDATASIZE(x, lenstr) ( (x) * sizeof(HEntry) + HSHRDSIZE + (lenstr) )
#define ARRPTR(x) ( (HEntry*) ( (char*)(x) + HSHRDSIZE ) )
#define STRPTR(x) ( (char*)(x) + HSHRDSIZE + ( sizeof(HEntry) * ((HStore*)x)->size ) )
#define PG_GETARG_HS(x) ((HStore*)PG_DETOAST_DATUM(PG_GETARG_DATUM(x)))
typedef struct
{
char *key;
char *val;
uint16 keylen;
uint16 vallen;
bool isnull;
bool needfree;
} Pairs;
int comparePairs(const void *a, const void *b);
int uniquePairs(Pairs * a, int4 l, int4 *buflen);
#define HStoreContainsStrategyNumber 7
#define HStoreExistsStrategyNumber 9
#endif /* __HSTORE_H__ */