Mercurial > gemma
view schema/search_functions.sql @ 2455:54c9fe587fe6
Subdivide SQL function to prepare for improved error handling
The context of an error (e.g. the function in which it occured)
can be inferred by the database client. Not doing all in one
statement will render the context more meaningful.
author | Tom Gottfried <tom@intevation.de> |
---|---|
date | Fri, 01 Mar 2019 18:38:02 +0100 |
parents | 0f1a915344c5 |
children | 194feb1a7e37 |
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-- This is Free Software under GNU Affero General Public License v >= 3.0 -- without warranty, see README.md and license for details. -- SPDX-License-Identifier: AGPL-3.0-or-later -- License-Filename: LICENSES/AGPL-3.0.txt -- Copyright (C) 2018 by via donau -- – Österreichische Wasserstraßen-Gesellschaft mbH -- Software engineering by Intevation GmbH -- Author(s): -- * Sascha Wilde <wilde@intevation.de> CREATE OR REPLACE FUNCTION search_bottlenecks(search_string text) RETURNS jsonb LANGUAGE plpgsql AS $$ DECLARE _result jsonb; BEGIN SELECT COALESCE(json_agg(r),'[]') INTO _result FROM (SELECT objnam AS name, ST_AsGeoJSON(ST_Centroid(area))::json AS geom, 'bottleneck' AS type FROM waterway.bottlenecks WHERE objnam ILIKE '%' || search_string || '%' ORDER BY name) r; RETURN _result; END; $$; CREATE OR REPLACE FUNCTION search_cities(search_string text) RETURNS jsonb LANGUAGE plpgsql AS $$ DECLARE _result jsonb; BEGIN SELECT COALESCE(json_agg(r),'[]') INTO _result FROM (SELECT name || ' (' || country_code || ')' AS name, ST_AsGeoJSON(location)::json AS geom, 'city' AS type FROM waterway.geonames WHERE feature_code IN ('PPLA', 'PPLA1', 'PPLA2', 'PPLA3', 'PPLC') AND (name ILIKE '%' || search_string || '%' OR alternatenames ~* ('(^|,)' || search_string || '($|,)')) ORDER BY array_position(ARRAY['PPLC', 'PPLA', 'PPLA1', 'PPLA2', 'PPLA3'], feature_code::text), name) r; RETURN _result; END; $$; CREATE OR REPLACE FUNCTION search_gauges(search_string text) RETURNS jsonb LANGUAGE plpgsql AS $$ DECLARE _result jsonb; BEGIN SELECT COALESCE(json_agg(r),'[]') INTO _result FROM (SELECT objname AS name, ST_AsGeoJSON(geom)::json AS geom, 'gauge' AS type FROM waterway.gauges WHERE objname ILIKE '%' || search_string || '%' ORDER BY name) r; RETURN _result; END; $$; CREATE OR REPLACE FUNCTION search_most(search_string text) RETURNS jsonb LANGUAGE plpgsql AS $$ BEGIN RETURN search_bottlenecks(search_string) || search_gauges(search_string) || search_cities(search_string); END; $$;