Support PostgreSQL 14

In PostgreSQL 14, planner was restructured in regard to query string
passing.  This change allows us to remove fair amount of lines and
complexity that had been added as a struggle for retrieving proper
query string.

Two callbacks, post_parse_analyze_hook and ProcessUtility_hook are no
longer used.  get_query_string is removed altogether.  Also
current_hint_retrieved juggling, which was complex and fragile,
disappears. Now pg_hint_plan_planner alone can retrieve hint string by
looking into the given string.

In PostgreSQL 14, a new optimization item "memoize" is added. It is
not handled in this commit and leave it for a later commit.

Makefile

@@ -5,7 +5,7 @@
 #
 
 MODULES = pg_hint_plan
-HINTPLANVER = 1.3.7
+HINTPLANVER = 1.4
 
 REGRESS = init base_plan pg_hint_plan ut-init ut-A ut-S ut-J ut-L ut-G ut-R ut-fdw ut-W ut-T ut-fini
 
@@ -22,8 +22,8 @@ PG_CONFIG = pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)
 include $(PGXS)
 
-STARBALL13 = pg_hint_plan13-$(HINTPLANVER).tar.gz
-STARBALLS = $(STARBALL13)
+STARBALL14 = pg_hint_plan14-$(HINTPLANVER).tar.gz
+STARBALLS = $(STARBALL14)
 
 TARSOURCES = Makefile *.c  *.h COPYRIGHT* \
 	pg_hint_plan--*.sql \
@@ -37,7 +37,7 @@ endif
 
 installcheck: $(REGRESSION_EXPECTED)
 
-rpms: rpm13
+rpms: rpm14
 
 # pg_hint_plan.c includes core.c and make_join_rel.c
 pg_hint_plan.o: core.c make_join_rel.c # pg_stat_statements.c
@@ -52,5 +52,5 @@ $(STARBALLS): $(TARSOURCES)
 	tar -chzf $@ $(addprefix $(subst .tar.gz,,$@)/, $^)
 	rm $(subst .tar.gz,,$@)
 
-rpm13: $(STARBALL13)
-	MAKE_ROOT=`pwd` rpmbuild -bb SPECS/pg_hint_plan13.spec
+rpm14: $(STARBALL14)
+	MAKE_ROOT=`pwd` rpmbuild -bb SPECS/pg_hint_plan14.spec

SPECS/pg_hint_plan13.spec → SPECS/pg_hint_plan14.spec

@@ -1,7 +1,7 @@
 # SPEC file for pg_store_plans
 # Copyright(C) 2020 NIPPON TELEGRAPH AND TELEPHONE CORPORATION
 
-%define _pgdir   /usr/pgsql-13
+%define _pgdir   /usr/pgsql-14
 %define _bindir  %{_pgdir}/bin
 %define _libdir  %{_pgdir}/lib
 %define _datadir %{_pgdir}/share
@@ -15,8 +15,8 @@
 
 ## Set general information for pg_store_plans.
 Summary:    Optimizer hint on PostgreSQL 12
-Name:       pg_hint_plan13
-Version:    1.3.7
+Name:       pg_hint_plan14
+Version:    1.4
 Release:    1%{?dist}
 License:    BSD
 Group:      Applications/Databases
@@ -26,28 +26,28 @@ BuildRoot:  %{_tmppath}/%{name}-%{version}-%{release}-%(%{__id_u} -n)
 Vendor:     NIPPON TELEGRAPH AND TELEPHONE CORPORATION
 
 ## We use postgresql-devel package
-BuildRequires:  postgresql13-devel
-Requires:  postgresql13-server
+BuildRequires:  postgresql14-devel
+Requires:  postgresql14-server
 
 ## Description for "pg_hint_plan"
 %description
 
 pg_hint_plan provides capability to tweak execution plans to be
 executed on PostgreSQL.
 
-Note that this package is available for only PostgreSQL 13.
+Note that this package is available for only PostgreSQL 14.
 
 %package llvmjit
-Requires: postgresql13-server, postgresql13-llvmjit
-Requires: pg_hint_plan13 = 1.3.7
-Summary:  Just-in-time compilation support for pg_hint_plan13
+Requires: postgresql14-server, postgresql14-llvmjit
+Requires: pg_hint_plan14 = 1.4
+Summary:  Just-in-time compilation support for pg_hint_plan14
 
 %description llvmjit
-Just-in-time compilation support for pg_hint_plan13
+Just-in-time compilation support for pg_hint_plan14
 
 ## pre work for build pg_hint_plan
 %prep
-PATH=/usr/pgsql-13/bin:$PATH
+PATH=/usr/pgsql-14/bin:$PATH
 if [ "${MAKE_ROOT}" != "" ]; then
   pushd ${MAKE_ROOT}
   make clean %{name}-%{version}.tar.gz
@@ -58,7 +58,7 @@ if [ ! -d %{_rpmdir} ]; then mkdir -p %{_rpmdir}; fi
 
 ## Set variables for build environment
 %build
-PATH=/usr/pgsql-13/bin:$PATH
+PATH=/usr/pgsql-14/bin:$PATH
 make USE_PGXS=1 %{?_smp_mflags}
 
 ## Set variables for install
@@ -73,7 +73,7 @@ rm -rf %{buildroot}
 %defattr(0755,root,root)
 %{_libdir}/pg_hint_plan.so
 %defattr(0644,root,root)
-%{_datadir}/extension/pg_hint_plan--1.3.7.sql
+%{_datadir}/extension/pg_hint_plan--1.4.sql
 %{_datadir}/extension/pg_hint_plan.control
 
 %files llvmjit
@@ -85,5 +85,5 @@ rm -rf %{buildroot}
 
 # History of pg_hint_plan.
 %changelog
-* Thu Oct 29 2020 Kyotaro Horiguchi
-- First release of pg_hint_plan13.
+* Tue Oct 05 2021 Kyotaro Horiguchi
+- Support PostgreSQL 14.