1 files changed, 55 insertions, 0 deletions
diff --git a/src/include/commands/extension.h b/src/include/commands/extension.h
new file mode 100644
index 0000000..24dbf86
--- /dev/null
+++ b/src/include/commands/extension.h
@@ -0,0 +1,55 @@
+/*-------------------------------------------------------------------------
+ *
+ * extension.h
+ *		Extension management commands (create/drop extension).
+ *
+ *
+ * Portions Copyright (c) 1996-2021, 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"
+
+
+/*
+ * 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 bool extension_file_exists(const char *extensionName);
+
+extern ObjectAddress AlterExtensionNamespace(const char *extensionName, const char *newschema,
+											 Oid *oldschema);
+
+#endif							/* EXTENSION_H */