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/*-------------------------------------------------------------------------
*
* namespace.h
* prototypes for functions in backend/catalog/namespace.c
*
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: namespace.h,v 1.14 2002/05/17 20:53:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef NAMESPACE_H
#define NAMESPACE_H
#include "nodes/primnodes.h"
/*
* This structure holds a list of possible functions or operators
* found by namespace lookup. Each function/operator is identified
* by OID and by argument types; the list must be pruned by type
* resolution rules that are embodied in the parser, not here.
*/
typedef struct _FuncCandidateList
{
struct _FuncCandidateList *next;
int pathpos; /* for internal use of namespace lookup */
Oid oid; /* the function or operator's OID */
int nargs; /* number of arg types returned */
Oid args[1]; /* arg types --- VARIABLE LENGTH ARRAY */
} *FuncCandidateList; /* VARIABLE LENGTH STRUCT */
/*
* This structure holds a list of opclass candidates found by namespace
* lookup.
*/
typedef struct _OpclassCandidateList
{
struct _OpclassCandidateList *next;
char *opcname_tmp; /* for internal use of namespace lookup */
int pathpos; /* for internal use of namespace lookup */
Oid oid; /* the opclass's OID */
Oid opcintype; /* type of input data for opclass */
bool opcdefault; /* T if opclass is default for opcintype */
Oid opckeytype; /* type of index data, or InvalidOid */
} *OpclassCandidateList;
extern Oid RangeVarGetRelid(const RangeVar *relation, bool failOK);
extern Oid RangeVarGetCreationNamespace(const RangeVar *newRelation);
extern Oid RelnameGetRelid(const char *relname);
extern bool RelationIsVisible(Oid relid);
extern Oid TypenameGetTypid(const char *typname);
extern bool TypeIsVisible(Oid typid);
extern FuncCandidateList FuncnameGetCandidates(List *names, int nargs);
extern bool FunctionIsVisible(Oid funcid);
extern FuncCandidateList OpernameGetCandidates(List *names, char oprkind);
extern bool OperatorIsVisible(Oid oprid);
extern OpclassCandidateList OpclassGetCandidates(Oid amid);
extern Oid OpclassnameGetOpcid(Oid amid, const char *opcname);
extern bool OpclassIsVisible(Oid opcid);
extern Oid QualifiedNameGetCreationNamespace(List *names, char **objname_p);
extern RangeVar *makeRangeVarFromNameList(List *names);
extern char *NameListToString(List *names);
extern bool isTempNamespace(Oid namespaceId);
extern void PushSpecialNamespace(Oid namespaceId);
extern void PopSpecialNamespace(Oid namespaceId);
/* initialization & transaction cleanup code */
extern void InitializeSearchPath(void);
extern void AtEOXact_Namespace(bool isCommit);
/* stuff for search_path GUC variable */
extern char *namespace_search_path;
extern const char *assign_search_path(const char *newval,
bool doit, bool interactive);
extern List *fetch_search_path(bool includeImplicit);
#endif /* NAMESPACE_H */
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