Update ChangeLog and version to v2.4

Author: darold

ChangeLog

@@ -1,3 +1,37 @@
+Version 2.4 - Jun 04 2021
+
+This version allow use of the extension by non superuser and especially
+the creation and maintenance of GTT. It also fixes compatibility with
+PostgreSQL v14. Here is the full list of changes:
+
+  - Fix FailedAssertion "flags & HASH_STRINGS" with PG14. Thanks to
+    MigOps for the patch.
+  - Check for minimum pg version in the C code instead of Makefile.
+    Thanks to MigOps for the patch.
+  - Fixed compiling for PostgreSQL 14. Thanks to Dmitry Ukolov for
+    the patch.
+  - Fix documentation about privilege to set on pgtt_schema for a
+    non superuser role.
+  - Allow creation and maintenance of Global Temporary Tables by non
+    superuser. This require that the user can use schema pgtt_schema
+    and can write to table pg_schema.pg_global_temp_tables.
+  - The library can now be loaded by the user using:
+	LOAD '$libdir/plugins/pgtt.so';
+    Thanks to Dmitry Ukolov for the feature request.
+  - Fix two crashes when --enable-cassert is used. Thanks to hanson69
+    for the report.
+  - Fix comment and index on PGTT table. Thanks to Dmitry Ukolov for
+    the report.
+  - Fix unexpected error "attempt to create referential integrity
+    constraint on global temporary table" when creating a regular
+    table and fix detection of FK and throw an error on create global
+    temporary table statement. Thanks to Dmitry Ukolov for the report.
+  - Fix impossibility to recreate GTT if it was dropped in another
+    session. Thanks to Dmitry Ukolov for the report.
+  - Remove useless extension's downgrade files. Thanks to MigOps
+    for the patch.
+
+
 Version 2.3 - Apr 02 2021
 
 This version fix the compatibility with PostgreSQL 10 and 11.

META.json

@@ -2,7 +2,7 @@
 	"name": "pgtt",
 	"abstract": "Extension to add Global Temporary Tables feature to PostgreSQL",
 	"description": "pgtt is a PostgreSQL extension to add Oracle-style Global Temporary Tables feature. It is based on unlogged table, partitioning and views.",
-	"version": "2.3.0",
+	"version": "2.4.0",
 	"maintainer": "Gilles Darold <gilles@darold.net>",
 	"license": {
 		"PostgreSQL": "http://www.postgresql.org/about/licence"
@@ -17,14 +17,14 @@
 	},
 	"provides": {
 		"pgtt": {
-			"file": "sql/pgtt--2.3.0.sql",
+			"file": "sql/pgtt--2.4.0.sql",
 			"docfile": "doc/pgtt.md",
-			"version": "2.3.0",
+			"version": "2.4.0",
 			"abstract": "Extension to manage Global Temporary Tables"
 		}
 	},
 	"meta-spec": {
-		"version": "2.3.0",
+		"version": "2.4.0",
 		"url": "http://pgxn.org/meta/spec.txt"
 	},
 	"tags": [

pgtt.c

@@ -73,8 +73,8 @@
 #include "catalog/pg_class.h"
 #endif
 
-#if PG_VERSION_NUM < 90400
-#error Minimum version of PostgreSQL required is 9.4
+#if PG_VERSION_NUM < 90500
+#error Minimum version of PostgreSQL required is 9.5
 #endif
 
 #define CATALOG_GLOBAL_TEMP_REL	"pg_global_temp_tables"
@@ -1243,7 +1243,12 @@ EnableGttManager(void)
 		GttHashTable = hash_create("Global Temporary Table hash list",
 									GTT_PER_DATABASE,
 									&ctl,
-									HASH_STRINGS | HASH_ELEM | HASH_CONTEXT);
+#if PG_VERSION_NUM >= 140000
+									HASH_STRINGS | HASH_ELEM | HASH_CONTEXT
+#else
+									HASH_ELEM | HASH_CONTEXT
+#endif
+						);
 		elog(DEBUG1, "GTT cache initialized.");
 	}
 

pgtt.control

@@ -1,4 +1,4 @@
-default_version = '2.3.0'
+default_version = '2.4.0'
 comment = 'Extension to add Global Temporary Tables feature to PostgreSQL'
 module_pathname = '$libdir/pgtt'
 schema = 'pgtt_schema'

sql/pgtt--2.4.0.sql

@@ -0,0 +1,27 @@
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION pgtt" to load this file. \quit
+
+----
+-- Create schema dedicated to the global temporary table
+----
+CREATE SCHEMA IF NOT EXISTS @extschema@;
+REVOKE ALL ON SCHEMA @extschema@ FROM PUBLIC;
+GRANT USAGE ON SCHEMA @extschema@ TO PUBLIC;
+
+----
+-- Table used to store information about Global Temporary Tables.
+-- Content will be loaded in memory by the pgtt extension.
+----
+CREATE TABLE @extschema@.pg_global_temp_tables (
+	relid integer NOT NULL,
+	nspname name NOT NULL,
+	relname name NOT NULL,
+	preserved boolean,
+	code text,
+	UNIQUE (nspname, relname)
+);
+GRANT ALL ON TABLE @extschema@.pg_global_temp_tables TO PUBLIC;
+
+-- Include tables into pg_dump
+SELECT pg_catalog.pg_extension_config_dump('pg_global_temp_tables', '');
+

updates/pgtt--2.3.0--2.4.0.sql

@@ -0,0 +1,9 @@
+--  complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION pgtt" to load this file. \quit
+
+-- check the functions bodies as creation time, enabled by default
+SET LOCAL check_function_bodies = on ;
+
+-- make sure of client encoding
+SET LOCAL client_encoding = 'UTF8';
+