greenplumn extension 源码
greenplumn extension 代码
文件路径：/src/include/commands/extension.h
/*-------------------------------------------------------------------------
*
* extension.h
* Extension management commands (create/drop extension).
*
*
* Portions Copyright (c) 1996-2019, 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 "nodes/parsenodes.h"
/*
* 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 *objAddress);
extern Oid get_extension_oid(const char *extname, bool missing_ok);
extern char *get_extension_name(Oid ext_oid);
extern ObjectAddress AlterExtensionNamespace(const char *extensionName, const char *newschema,
Oid *oldschema);
extern void execute_sql_string(const char *sql);
extern void ResetExtensionCreatingGlobalVarsOnQE(void);
#endif /* EXTENSION_H */
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