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We have seen one too many reports of people trying to use 9.1 extension files in the old-fashioned way of sourcing them in psql. Not only does that usually not work (due to failure to substitute for MODULE_PATHNAME and/or @extschema@), but if it did work they'd get a collection of loose objects not an extension. To prevent this, insert an \echo ... \quit line that prints a suitable error message into each extension script file, and teach commands/extension.c to ignore lines starting with \echo. That should not only prevent any adverse consequences of loading a script file the wrong way, but make it crystal clear to users that they need to do it differently now. Tom Lane, following an idea of Andrew Dunstan's. Back-patch into 9.1 ... there is not going to be much value in this if we wait till 9.2.
26 lines
708 B
SQL
26 lines
708 B
SQL
/* contrib/lo/lo--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 lo" to load this file. \quit
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--
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-- Create the data type ... now just a domain over OID
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--
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CREATE DOMAIN lo AS pg_catalog.oid;
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--
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-- For backwards compatibility, define a function named lo_oid.
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--
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-- The other functions that formerly existed are not needed because
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-- the implicit casts between a domain and its underlying type handle them.
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--
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CREATE FUNCTION lo_oid(lo) RETURNS pg_catalog.oid AS
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'SELECT $1::pg_catalog.oid' LANGUAGE SQL STRICT IMMUTABLE;
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-- This is used in triggers
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CREATE FUNCTION lo_manage()
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RETURNS pg_catalog.trigger
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AS 'MODULE_PATHNAME'
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LANGUAGE C;
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