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annotate schema/updates/1103/01.fix_constraint_error_codes.sql @ 5666:37c2354a6024 clickable-links

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Render links only to known bottlenecks
author Thomas Junk <thomas.junk@intevation.de>
date Tue, 05 Dec 2023 15:34:31 +0100
parents ec8438712447
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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ec8438712447 Enable better error handling for referenced gauges/bottlenecks constraints.
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1 -- This is Free Software under GNU Affero General Public License v >= 3.0
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2 -- without warranty, see README.md and license for details.
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3
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4 -- SPDX-License-Identifier: AGPL-3.0-or-later
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5 -- License-Filename: LICENSES/AGPL-3.0.txt
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6
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7 -- Copyright (C) 2019 by via donau
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8 -- – Österreichische Wasserstraßen-Gesellschaft mbH
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9 -- Software engineering by Intevation GmbH
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10
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11 -- Author(s):
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12 -- * Sascha Wilde <sascha.wilde@intevation.de>
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13
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14 --
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15 -- CONSTRAINT FUNCTIONS
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16 --
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17 -- The only change in the following functions is the error code
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18 -- returend in case of failure: it should be
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19 -- 23503: foreign_key_violation
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20 -- as what we are emulating is kind of an foreign key...
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21
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22 CREATE OR REPLACE FUNCTION check_valid_gauge() RETURNS trigger AS
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23 $$
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24 DECLARE
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25 -- FIXME: I'm using text for the isrs code and cast it on demand.
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26 -- If someone is able to get it to work with isrs or isrs_base as
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27 -- type, feel free to show me how its done... ;-) [sw]
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28 referenced_gauge text;
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29 new_validity tstzrange;
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30 BEGIN
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31 EXECUTE format('SELECT $1.%I', TG_ARGV[0])
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32 INTO referenced_gauge
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33 USING NEW;
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34 EXECUTE format('SELECT $1.%I', TG_ARGV[1])
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35 INTO new_validity
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36 USING NEW;
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37 IF EXISTS ( SELECT * FROM waterway.gauges
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38 WHERE location = referenced_gauge::isrs
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39 AND validity && new_validity )
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40 THEN
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41 RETURN NEW;
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42 ELSE
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43 RAISE EXCEPTION
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44 'new row for relation "%" violates constraint trigger "%"',
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45 TG_TABLE_NAME, TG_NAME
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46 USING
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47 DETAIL = format('No matching gauge %s found.',
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48 isrs_AsText(referenced_gauge::isrs)),
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49 ERRCODE = 23503,
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50 SCHEMA = TG_TABLE_SCHEMA,
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51 TABLE = TG_TABLE_NAME,
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52 COLUMN = TG_ARGV[0],
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53 CONSTRAINT = TG_NAME;
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54 END IF;
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55 END;
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56 $$
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57 LANGUAGE plpgsql;
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58
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59 CREATE OR REPLACE FUNCTION check_valid_gauge_ts() RETURNS trigger AS
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60 $$
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61 DECLARE
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62 -- FIXME: I'm using text for the isrs code and cast it on demand.
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63 -- If someone is able to get it to work with isrs or isrs_base as
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64 -- type, feel free to show me how its done... ;-) [sw]
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65 referenced_gauge text;
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66 new_tstz timestamptz;
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67 BEGIN
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68 EXECUTE format('SELECT $1.%I', TG_ARGV[0])
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69 INTO referenced_gauge
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70 USING NEW;
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71 EXECUTE format('SELECT $1.%I', TG_ARGV[1])
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72 INTO new_tstz
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73 USING NEW;
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74 IF EXISTS ( SELECT * FROM waterway.gauges
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75 WHERE location = referenced_gauge::isrs
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76 AND validity @> new_tstz )
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77 THEN
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78 RETURN NEW;
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79 ELSE
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80 RAISE EXCEPTION
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81 'new row for relation "%" violates constraint trigger "%"',
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82 TG_TABLE_NAME, TG_NAME
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83 USING
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84 DETAIL = format('No matching gauge %s for %s found.',
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85 (isrs_AsText(referenced_gauge::isrs)), new_tstz),
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86 ERRCODE = 23503,
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87 SCHEMA = TG_TABLE_SCHEMA,
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88 TABLE = TG_TABLE_NAME,
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89 COLUMN = TG_ARGV[0],
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90 CONSTRAINT = TG_NAME;
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91 END IF;
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92 END;
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93 $$
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94 LANGUAGE plpgsql;
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95
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96 CREATE OR REPLACE FUNCTION check_valid_bottleneck_ts() RETURNS trigger AS
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97 $$
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98 DECLARE
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99 referenced_bottleneck_id text;
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100 new_tstz timestamptz;
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101 BEGIN
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102 EXECUTE format('SELECT $1.%I', TG_ARGV[0])
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103 INTO referenced_bottleneck_id
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104 USING NEW;
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105 EXECUTE format('SELECT $1.%I', TG_ARGV[1])
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106 INTO new_tstz
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107 USING NEW;
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108 IF EXISTS ( SELECT * FROM waterway.bottlenecks
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109 WHERE bottleneck_id = referenced_bottleneck_id
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110 AND validity @> new_tstz )
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111 THEN
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112 RETURN NEW;
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113 ELSE
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114 RAISE EXCEPTION
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115 'new row for relation "%" violates constraint trigger "%"',
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116 TG_TABLE_NAME, TG_NAME
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117 USING
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118 DETAIL = format('No matching bottleneck %s for %s found.',
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119 referenced_bottleneck_id, new_tstz),
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120 ERRCODE = 23503,
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121 SCHEMA = TG_TABLE_SCHEMA,
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122 TABLE = TG_TABLE_NAME,
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123 COLUMN = TG_ARGV[0],
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124 CONSTRAINT = TG_NAME;
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125 END IF;
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126 END;
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127 $$
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128 LANGUAGE plpgsql;