set.h

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/*****************************************************************************
 *
 * This MobilityDB code is provided under The PostgreSQL License.
 * Copyright (c) 2016-2025, Université libre de Bruxelles and MobilityDB
 * contributors
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 * MobilityDB includes portions of PostGIS version 3 source code released
 * under the GNU General Public License (GPLv2 or later).
 * Copyright (c) 2001-2025, PostGIS contributors
 *
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 *****************************************************************************/
 
#ifndef __SET_H__
#define __SET_H__
 
/*****************************************************************************/
 
/*
 * fmgr macros for ordered set types
 */
 
/* PostgreSQL */
#include <postgres.h>
/* MEOS */
#include <meos.h>
#include "temporal/meos_catalog.h"
#include "temporal/temporal.h"
 
#if MEOS
  #define DatumGetSetP(X)      ((Set *) DatumGetPointer(X))
#else
  #define DatumGetSetP(X)      ((Set *) PG_DETOAST_DATUM(X))
#endif /* MEOS */
#define SetPGetDatum(X)        PointerGetDatum(X)
#define PG_GETARG_SET_P(X)     ((Set *) PG_GETARG_VARLENA_P(X))
#define PG_RETURN_SET_P(X)     PG_RETURN_POINTER(X)
 
#define MINIDX 0
#define MAXIDX count - 1
 
/*****************************************************************************
 * Struct definition for the unnest operation
 *****************************************************************************/
 
typedef struct
{
  bool done;
  int i;
  int count;
  Set *set;  /* Set to unnest */
  Datum *values;   /* Values obtained by getValues(temp) */
} SetUnnestState;
 
/*****************************************************************************/
 
/* General functions */
 
extern char *set_out_fn(const Set *s, int maxdd, outfunc value_out);
 
extern bool ensure_set_isof_type(const Set *s, meosType settype);
extern bool ensure_valid_set_set(const Set *s1, const Set *s2);
 
extern bool set_find_value(const Set *s, Datum, int *loc);
 
extern SetUnnestState *set_unnest_state_make(const Set *set);
extern void set_unnest_state_next(SetUnnestState *state);
 
/*****************************************************************************/
 
#endif /* __SET_H__ */