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e3b1b6c0cd
It also works to create a non-polymorphic aggregate from polymorphic functions, should you want to do that. Regression test added, docs still lacking. By Joe Conway, with some kibitzing from Tom Lane.
110 lines
4.1 KiB
C
110 lines
4.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* lsyscache.h
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* Convenience routines for common queries in the system catalog cache.
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*
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* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: lsyscache.h,v 1.76 2003/07/01 19:10:53 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef LSYSCACHE_H
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#define LSYSCACHE_H
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#include "access/htup.h"
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/* I/O function selector for get_type_io_data */
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typedef enum IOFuncSelector
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{
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IOFunc_input,
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IOFunc_output,
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IOFunc_receive,
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IOFunc_send
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} IOFuncSelector;
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extern bool op_in_opclass(Oid opno, Oid opclass);
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extern bool op_requires_recheck(Oid opno, Oid opclass);
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extern Oid get_opclass_member(Oid opclass, int16 strategy);
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extern Oid get_op_hash_function(Oid opno);
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extern char *get_attname(Oid relid, AttrNumber attnum);
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extern AttrNumber get_attnum(Oid relid, const char *attname);
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extern Oid get_atttype(Oid relid, AttrNumber attnum);
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extern int32 get_atttypmod(Oid relid, AttrNumber attnum);
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extern void get_atttypetypmod(Oid relid, AttrNumber attnum,
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Oid *typid, int32 *typmod);
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extern bool opclass_is_btree(Oid opclass);
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extern bool opclass_is_hash(Oid opclass);
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extern RegProcedure get_opcode(Oid opno);
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extern char *get_opname(Oid opno);
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extern bool op_mergejoinable(Oid opno, Oid *leftOp, Oid *rightOp);
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extern void op_mergejoin_crossops(Oid opno, Oid *ltop, Oid *gtop,
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RegProcedure *ltproc, RegProcedure *gtproc);
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extern bool op_hashjoinable(Oid opno);
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extern bool op_strict(Oid opno);
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extern char op_volatile(Oid opno);
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extern Oid get_commutator(Oid opno);
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extern Oid get_negator(Oid opno);
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extern RegProcedure get_oprrest(Oid opno);
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extern RegProcedure get_oprjoin(Oid opno);
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extern char *get_func_name(Oid funcid);
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extern Oid get_func_rettype(Oid funcid);
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extern Oid get_func_signature(Oid funcid, Oid *argtypes, int *nargs);
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extern bool get_func_retset(Oid funcid);
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extern bool func_strict(Oid funcid);
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extern char func_volatile(Oid funcid);
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extern Oid get_relname_relid(const char *relname, Oid relnamespace);
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extern Oid get_system_catalog_relid(const char *catname);
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extern char *get_rel_name(Oid relid);
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extern Oid get_rel_namespace(Oid relid);
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extern Oid get_rel_type_id(Oid relid);
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extern char get_rel_relkind(Oid relid);
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extern bool get_typisdefined(Oid typid);
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extern int16 get_typlen(Oid typid);
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extern bool get_typbyval(Oid typid);
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extern void get_typlenbyval(Oid typid, int16 *typlen, bool *typbyval);
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extern void get_typlenbyvalalign(Oid typid, int16 *typlen, bool *typbyval,
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char *typalign);
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extern void get_type_io_data(Oid typid,
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IOFuncSelector which_func,
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int16 *typlen,
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bool *typbyval,
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char *typalign,
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char *typdelim,
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Oid *typelem,
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Oid *func);
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extern char get_typstorage(Oid typid);
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extern int32 get_typtypmod(Oid typid);
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extern Node *get_typdefault(Oid typid);
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extern char get_typtype(Oid typid);
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extern Oid get_typ_typrelid(Oid typid);
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extern Oid get_element_type(Oid typid);
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extern Oid get_array_type(Oid typid);
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extern char *get_typname(Oid relid);
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extern void getTypeInputInfo(Oid type, Oid *typInput, Oid *typElem);
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extern void getTypeOutputInfo(Oid type, Oid *typOutput, Oid *typElem,
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bool *typIsVarlena);
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extern void getTypeBinaryInputInfo(Oid type, Oid *typReceive, Oid *typElem);
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extern void getTypeBinaryOutputInfo(Oid type, Oid *typSend, Oid *typElem,
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bool *typIsVarlena);
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extern Oid getBaseType(Oid typid);
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extern int32 get_typavgwidth(Oid typid, int32 typmod);
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extern int32 get_attavgwidth(Oid relid, AttrNumber attnum);
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extern bool get_attstatsslot(HeapTuple statstuple,
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Oid atttype, int32 atttypmod,
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int reqkind, Oid reqop,
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Datum **values, int *nvalues,
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float4 **numbers, int *nnumbers);
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extern void free_attstatsslot(Oid atttype,
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Datum *values, int nvalues,
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float4 *numbers, int nnumbers);
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extern char *get_namespace_name(Oid nspid);
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extern int32 get_usesysid(const char *username);
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#define is_array_type(typid) (get_element_type(typid) != InvalidOid)
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#define TypeIsToastable(typid) (get_typstorage(typid) != 'p')
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#endif /* LSYSCACHE_H */
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