postgresql/src/include/catalog/pg_conversion.h

/*-------------------------------------------------------------------------
 *
 * pg_conversion.h
 *	  definition of the system "conversion" relation (pg_conversion)
 *	  along with the relation's initial contents.
 *
 *
 * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: pg_conversion.h,v 1.5 2002/08/06 14:11:06 tgl Exp $
 *
 * NOTES
 *	  the genbki.sh script reads this file and generates .bki
 *	  information from the DATA() statements.
 *
 *-------------------------------------------------------------------------
 */
#ifndef PG_CONVERSION_H
#define PG_CONVERSION_H

/* ----------------
 *		postgres.h contains the system type definitions and the
 *		CATALOG(), BOOTSTRAP and DATA() sugar words so this file
 *		can be read by both genbki.sh and the C compiler.
 * ----------------
 */

/* ----------------------------------------------------------------
 *		pg_conversion definition.
 *
 *		cpp turns this into typedef struct FormData_pg_namespace
 *
 *	conname				name of the conversion
 *	connamespace		name space which the conversion belongs to
 *	conowner			owner of the conversion
 *	conforencoding		FOR encoding id
 *	contoencoding		TO encoding id
 *  conproc				OID of the conversion proc
 *  condefault			TRUE is this is a default conversion
 * ----------------------------------------------------------------
 */
CATALOG(pg_conversion)
{
	NameData	conname;
	Oid			connamespace;
	int4		conowner;
	int4		conforencoding;
	int4		contoencoding;
	regproc		conproc;
	bool		condefault;
} FormData_pg_conversion;

/* ----------------
 *		Form_pg_conversion corresponds to a pointer to a tuple with
 *		the format of pg_conversion relation.
 * ----------------
 */
typedef FormData_pg_conversion *Form_pg_conversion;

/* ----------------
 *		compiler constants for pg_conversion
 * ----------------
 */

#define Natts_pg_conversion				7
#define Anum_pg_conversion_conname		1
#define Anum_pg_conversion_connamespace	2
#define Anum_pg_conversion_conowner		3
#define Anum_pg_conversion_conforencoding		4
#define Anum_pg_conversion_contoencoding		5
#define Anum_pg_conversion_conproc		6
#define Anum_pg_conversion_condefault	7

/* ----------------
 * initial contents of pg_conversion
 * ---------------
 */

/*
 * prototypes for functions in pg_conversion.c
 */
#include "nodes/pg_list.h"
#include "nodes/parsenodes.h"

extern Oid	ConversionCreate(const char *conname, Oid connamespace,
							 int32 conowner,
							 int4 conforencoding, int4 contoencoding,
							 Oid conproc, bool def);
extern void ConversionDrop(const char *conname, Oid connamespace,
						   int32 conowner, DropBehavior behavior);
extern void RemoveConversionById(Oid conversionOid);
extern Oid FindConversion(const char *conname, Oid connamespace);
extern Oid FindDefaultConversion(Oid connamespace, int4 for_encoding, int4 to_encoding);

#endif   /* PG_CONVERSION_H */