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/*-------------------------------------------------------------------------
*
* lsyscache.h
* Convenience routines for common queries in the system catalog cache.
*
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/lsyscache.h,v 1.101 2005/10/15 02:49:46 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef LSYSCACHE_H
#define LSYSCACHE_H
#include "access/htup.h"
/* I/O function selector for get_type_io_data */
typedef enum IOFuncSelector
{
IOFunc_input,
IOFunc_output,
IOFunc_receive,
IOFunc_send
} IOFuncSelector;
extern bool op_in_opclass(Oid opno, Oid opclass);
extern int get_op_opclass_strategy(Oid opno, Oid opclass);
extern void get_op_opclass_properties(Oid opno, Oid opclass,
int *strategy, Oid *subtype,
bool *recheck);
extern Oid get_opclass_member(Oid opclass, Oid subtype, int16 strategy);
extern Oid get_op_hash_function(Oid opno);
extern Oid get_opclass_proc(Oid opclass, Oid subtype, int16 procnum);
extern char *get_attname(Oid relid, AttrNumber attnum);
extern char *get_relid_attribute_name(Oid relid, AttrNumber attnum);
extern AttrNumber get_attnum(Oid relid, const char *attname);
extern Oid get_atttype(Oid relid, AttrNumber attnum);
extern int32 get_atttypmod(Oid relid, AttrNumber attnum);
extern void get_atttypetypmod(Oid relid, AttrNumber attnum,
Oid *typid, int32 *typmod);
extern bool opclass_is_btree(Oid opclass);
extern bool opclass_is_hash(Oid opclass);
extern RegProcedure get_opcode(Oid opno);
extern char *get_opname(Oid opno);
extern void op_input_types(Oid opno, Oid *lefttype, Oid *righttype);
extern bool op_mergejoinable(Oid opno, Oid *leftOp, Oid *rightOp);
extern void op_mergejoin_crossops(Oid opno, Oid *ltop, Oid *gtop,
RegProcedure *ltproc, RegProcedure *gtproc);
extern bool op_hashjoinable(Oid opno);
extern bool op_strict(Oid opno);
extern char op_volatile(Oid opno);
extern Oid get_commutator(Oid opno);
extern Oid get_negator(Oid opno);
extern RegProcedure get_oprrest(Oid opno);
extern RegProcedure get_oprjoin(Oid opno);
extern char *get_func_name(Oid funcid);
extern Oid get_func_rettype(Oid funcid);
extern int get_func_nargs(Oid funcid);
extern Oid get_func_signature(Oid funcid, Oid **argtypes, int *nargs);
extern bool get_func_retset(Oid funcid);
extern bool func_strict(Oid funcid);
extern char func_volatile(Oid funcid);
extern Oid get_relname_relid(const char *relname, Oid relnamespace);
extern char *get_rel_name(Oid relid);
extern Oid get_rel_namespace(Oid relid);
extern Oid get_rel_type_id(Oid relid);
extern char get_rel_relkind(Oid relid);
extern bool get_typisdefined(Oid typid);
extern int16 get_typlen(Oid typid);
extern bool get_typbyval(Oid typid);
extern void get_typlenbyval(Oid typid, int16 *typlen, bool *typbyval);
extern void get_typlenbyvalalign(Oid typid, int16 *typlen, bool *typbyval,
char *typalign);
extern Oid getTypeIOParam(HeapTuple typeTuple);
extern void get_type_io_data(Oid typid,
IOFuncSelector which_func,
int16 *typlen,
bool *typbyval,
char *typalign,
char *typdelim,
Oid *typioparam,
Oid *func);
extern char get_typstorage(Oid typid);
extern int32 get_typtypmod(Oid typid);
extern Node *get_typdefault(Oid typid);
extern char get_typtype(Oid typid);
extern Oid get_typ_typrelid(Oid typid);
extern Oid get_element_type(Oid typid);
extern Oid get_array_type(Oid typid);
extern void getTypeInputInfo(Oid type, Oid *typInput, Oid *typIOParam);
extern void getTypeOutputInfo(Oid type, Oid *typOutput, bool *typIsVarlena);
extern void getTypeBinaryInputInfo(Oid type, Oid *typReceive, Oid *typIOParam);
extern void getTypeBinaryOutputInfo(Oid type, Oid *typSend, bool *typIsVarlena);
extern Oid getBaseType(Oid typid);
extern int32 get_typavgwidth(Oid typid, int32 typmod);
extern int32 get_attavgwidth(Oid relid, AttrNumber attnum);
extern bool get_attstatsslot(HeapTuple statstuple,
Oid atttype, int32 atttypmod,
int reqkind, Oid reqop,
Datum **values, int *nvalues,
float4 **numbers, int *nnumbers);
extern void free_attstatsslot(Oid atttype,
Datum *values, int nvalues,
float4 *numbers, int nnumbers);
extern char *get_namespace_name(Oid nspid);
extern Oid get_roleid(const char *rolname);
extern Oid get_roleid_checked(const char *rolname);
#define is_array_type(typid) (get_element_type(typid) != InvalidOid)
#define TypeIsToastable(typid) (get_typstorage(typid) != 'p')
#endif /* LSYSCACHE_H */
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