extension.h

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/*-------------------------------------------------------------------------
 *
 * extension.h
 *      Extension management commands (create/drop extension).
 *
 *
 * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/commands/extension.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef EXTENSION_H
#define EXTENSION_H
 
#include "catalog/objectaddress.h"
#include "parser/parse_node.h"
 
/* GUC */
extern PGDLLIMPORT char *Extension_control_path;
 
/*
 * creating_extension is only true while running a CREATE EXTENSION or ALTER
 * EXTENSION UPDATE command.  It instructs recordDependencyOnCurrentExtension()
 * to register a dependency on the current pg_extension object for each SQL
 * object created by an extension script.  It also instructs performDeletion()
 * to remove such dependencies without following them, so that extension
 * scripts can drop member objects without having to explicitly dissociate
 * them from the extension first.
 */
extern PGDLLIMPORT bool creating_extension;
extern PGDLLIMPORT Oid CurrentExtensionObject;
 
 
extern ObjectAddress CreateExtension(ParseState *pstate, CreateExtensionStmt *stmt);
 
extern void RemoveExtensionById(Oid extId);
 
extern ObjectAddress InsertExtensionTuple(const char *extName, Oid extOwner,
                                          Oid schemaOid, bool relocatable, const char *extVersion,
                                          Datum extConfig, Datum extCondition,
                                          List *requiredExtensions);
 
extern ObjectAddress ExecAlterExtensionStmt(ParseState *pstate, AlterExtensionStmt *stmt);
 
extern ObjectAddress ExecAlterExtensionContentsStmt(AlterExtensionContentsStmt *stmt,
                                                    ObjectAddress *objAddr);
 
extern Oid  get_extension_oid(const char *extname, bool missing_ok);
extern char *get_extension_name(Oid ext_oid);
extern Oid  get_extension_schema(Oid ext_oid);
extern bool extension_file_exists(const char *extensionName);
 
extern Oid  get_function_sibling_type(Oid funcoid, const char *typname);
 
extern ObjectAddress AlterExtensionNamespace(const char *extensionName, const char *newschema,
                                             Oid *oldschema);
 
#endif                          /* EXTENSION_H */