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36058a3c55
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
20 lines
647 B
SQL
20 lines
647 B
SQL
/* contrib/bool_plperl/bool_plperl--1.0.sql */
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-- complain if script is sourced in psql, rather than via CREATE EXTENSION
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\echo Use "CREATE EXTENSION bool_plperl" to load this file. \quit
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CREATE FUNCTION bool_to_plperl(val internal) RETURNS internal
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LANGUAGE C STRICT IMMUTABLE
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AS 'MODULE_PATHNAME';
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CREATE FUNCTION plperl_to_bool(val internal) RETURNS bool
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LANGUAGE C STRICT IMMUTABLE
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AS 'MODULE_PATHNAME';
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CREATE TRANSFORM FOR bool LANGUAGE plperl (
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FROM SQL WITH FUNCTION bool_to_plperl(internal),
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TO SQL WITH FUNCTION plperl_to_bool(internal)
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);
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COMMENT ON TRANSFORM FOR bool LANGUAGE plperl IS 'transform between bool and Perl';
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