DO block to emit message. ticket #3118

git-svn-id: http://svn.osgeo.org/postgis/trunk@13510 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/raster/rt_pg/rtpostgis.sql.in b/raster/rt_pg/rtpostgis.sql.in
index 160c6d31a6bd6b734087724156296cb234c2a994..c966a9845e6118871eba918d1e0950f9dc3e3874 100644 (file)
--- a/raster/rt_pg/rtpostgis.sql.in
+++ b/raster/rt_pg/rtpostgis.sql.in
@@ -7572,6 +7572,8 @@ CREATE OR REPLACE FUNCTION _raster_constraint_info_nodata_values(rastschema name
        $$ LANGUAGE sql STABLE STRICT
   COST 100;
 
+-- Availability: 2.0.0
+-- Changed: 2.2.0
 CREATE OR REPLACE FUNCTION _raster_constraint_nodata_values(rast raster)
        RETURNS numeric[] AS
        $$ SELECT array_agg(round(nodatavalue::numeric, 10))::numeric[] FROM st_bandmetadata($1, ARRAY[]::int[]); $$

diff --git a/raster/rt_pg/rtpostgis_upgrade_cleanup.sql.in b/raster/rt_pg/rtpostgis_upgrade_cleanup.sql.in
index 84786385840fed85c36fb48af382b6363ef1fac9..a3932412e415183e50d95c2079cf05b6391a7cad 100644 (file)
--- a/raster/rt_pg/rtpostgis_upgrade_cleanup.sql.in
+++ b/raster/rt_pg/rtpostgis_upgrade_cleanup.sql.in
@@ -578,4 +578,24 @@ DROP FUNCTION IF EXISTS _st_hillshade4ma(float8[], text, text[]);
 DROP FUNCTION IF EXISTS _st_slope4ma(float8[], text, text[]);
 
 -- function signature change
-DROP FUNCTION IF EXISTS _raster_constraint_nodata_values(rast raster);
+-- return value changed
+DO LANGUAGE 'plpgsql' $$
+DECLARE
+       cnt bigint;
+BEGIN
+       SELECT
+               count(*)
+       INTO cnt
+       FROM pg_proc f
+       JOIN pg_type t
+               ON f.prorettype = t.oid
+       WHERE lower(f.proname) = '_raster_constraint_nodata_values'
+               AND f.pronargs = 1
+               AND t.typname = '_float8'; -- array form
+
+       IF cnt > 0 THEN
+               RAISE NOTICE 'Dropping _raster_constraint_nodata_values(raster) due to return value changes.  Unfortunately, this is a DROP ... CASCADE as the NODATA raster constraint uses _raster_constraint_nodata_values(raster).  You will need to reapply AddRasterConstraint(''SCHEMA'', ''TABLE'', ''COLUMN'', ''nodata'') to any raster column that requires this constraint.';
+               DROP FUNCTION IF EXISTS _raster_constraint_nodata_values(raster) CASCADE;
+       END IF;
+END;
+$$;