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Create contrib/bool_plperl to provide a bool transform for PL/Perl[U].

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plperl's default handling of bool arguments or results is not terribly
satisfactory, since Perl doesn't consider the string 'f' to be false.
Ideally we'd just fix that, but the backwards-compatibility hazard
would be substantial.  Instead, build a TRANSFORM module that can
be optionally applied to provide saner semantics.

Perhaps usefully, this is also about the minimum possible skeletal
example of a plperl transform module; so it might be a better starting
point for user-written transform modules than hstore_plperl or
jsonb_plperl.

Ivan Panchenko

Discussion: https://postgr.es/m/1583013317.881182688@f390.i.mail.ru
This commit is contained in:
Tom Lane
2020-03-06 17:11:23 -05:00
parent a6525588b7
commit 36058a3c55
14 changed files with 502 additions and 4 deletions
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39
contrib/bool_plperl/Makefile Normal file
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# contrib/bool_plperl/Makefile
MODULE_big = bool_plperl
OBJS = \
$(WIN32RES) \
bool_plperl.o
PGFILEDESC = "bool_plperl - bool transform for plperl"
PG_CPPFLAGS = -I$(top_srcdir)/src/pl/plperl
EXTENSION = bool_plperlu bool_plperl
DATA = bool_plperlu--1.0.sql bool_plperl--1.0.sql
REGRESS = bool_plperl bool_plperlu
ifdef USE_PGXS
PG_CONFIG = pg_config
PGXS := $(shell $(PG_CONFIG) --pgxs)
include $(PGXS)
else
subdir = contrib/bool_plperl
top_builddir = ../..
include $(top_builddir)/src/Makefile.global
include $(top_srcdir)/contrib/contrib-global.mk
endif
# We must link libperl explicitly
ifeq ($(PORTNAME), win32)
# these settings are the same as for plperl
override CPPFLAGS += -DPLPERL_HAVE_UID_GID -Wno-comment
# ... see silliness in plperl Makefile ...
SHLIB_LINK_INTERNAL += $(sort $(wildcard ../../src/pl/plperl/libperl*.a))
else
rpathdir = $(perl_archlibexp)/CORE
SHLIB_LINK += $(perl_embed_ldflags)
endif
# As with plperl we need to include the perl_includespec directory last.
override CPPFLAGS := $(CPPFLAGS) $(perl_embed_ccflags) $(perl_includespec)