1 | -- alkis-functions.sql - Trigger-Funktionen fÃŒr die FortfÃŒhrung der |
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2 | -- alkis_beziehungen aus EintrÀgen der delete-Tabelle |
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3 | |
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4 | -- 2013-07-10: Erweiterung zur Verarbeitung der Replace-SÀtze in ALKIS-Beziehungen |
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5 | |
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6 | -- 2013-12-10: In der Function "update_fields_beziehungen" den Fall behandeln, dass ein Objekt einer |
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7 | -- neuen Beziehung in keiner Tabelle gefunden wird. |
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8 | -- Wenn ein einzelnes Objekt fehlt, soll dies keine Auswirkungen auf andere Objekte haben. |
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9 | -- FÃŒllen von "zu_typename" auskommentiert. |
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10 | |
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11 | -- 2014-01-31: Deaktivieren von "update_fields_beziehungen", |
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12 | -- statt dessen verwenden der "import_id" um alte Relationen zu identifizieren und zu löschen. |
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13 | |
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14 | |
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15 | -- Table/View/Sequence löschen, wenn vorhanden |
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16 | CREATE OR REPLACE FUNCTION alkis_dropobject(t TEXT) RETURNS varchar AS $$ |
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17 | DECLARE |
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18 | c RECORD; |
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19 | s varchar; |
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20 | r varchar; |
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21 | d varchar; |
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22 | i integer; |
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23 | tn varchar; |
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24 | BEGIN |
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25 | r := ''; |
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26 | d := ''; |
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27 | |
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28 | -- drop objects |
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29 | FOR c IN SELECT relkind,relname |
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30 | FROM pg_class |
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31 | JOIN pg_namespace ON pg_class.relnamespace=pg_namespace.oid |
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32 | WHERE pg_namespace.nspname='public' AND pg_class.relname=t |
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33 | ORDER BY relkind |
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34 | LOOP |
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35 | IF c.relkind = 'v' THEN |
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36 | r := r || d || 'Sicht ' || c.relname || ' gelöscht.'; |
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37 | EXECUTE 'DROP VIEW ' || c.relname || ' CASCADE'; |
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38 | ELSIF c.relkind = 'r' THEN |
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39 | r := r || d || 'Tabelle ' || c.relname || ' gelöscht.'; |
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40 | EXECUTE 'DROP TABLE ' || c.relname || ' CASCADE'; |
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41 | ELSIF c.relkind = 'S' THEN |
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42 | r := r || d || 'Sequenz ' || c.relname || ' gelöscht.'; |
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43 | EXECUTE 'DROP SEQUENCE ' || c.relname; |
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44 | ELSIF c.relkind <> 'i' THEN |
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45 | r := r || d || 'Typ ' || c.table_type || '.' || c.table_name || ' unerwartet.'; |
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46 | END IF; |
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47 | d := E'\n'; |
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48 | END LOOP; |
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49 | |
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50 | FOR c IN SELECT indexname FROM pg_indexes WHERE schemaname='public' AND indexname=t |
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51 | LOOP |
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52 | r := r || d || 'Index ' || c.indexname || ' gelöscht.'; |
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53 | EXECUTE 'DROP INDEX ' || c.indexname; |
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54 | d := E'\n'; |
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55 | END LOOP; |
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56 | |
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57 | FOR c IN SELECT proname,proargtypes |
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58 | FROM pg_proc |
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59 | JOIN pg_namespace ON pg_proc.pronamespace=pg_namespace.oid |
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60 | WHERE pg_namespace.nspname='public' AND pg_proc.proname=t |
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61 | LOOP |
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62 | r := r || d || 'Funktion ' || c.proname || ' gelöscht.'; |
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63 | |
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64 | s := 'DROP FUNCTION ' || c.proname || '('; |
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65 | d := ''; |
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66 | |
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67 | FOR i IN array_lower(c.proargtypes,1)..array_upper(c.proargtypes,1) LOOP |
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68 | SELECT typname INTO tn FROM pg_type WHERE oid=c.proargtypes[i]; |
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69 | s := s || d || tn; |
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70 | d := ','; |
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71 | END LOOP; |
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72 | |
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73 | s := s || ')'; |
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74 | |
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75 | EXECUTE s; |
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76 | |
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77 | d := E'\n'; |
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78 | END LOOP; |
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79 | |
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80 | FOR c IN SELECT relname,conname |
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81 | FROM pg_constraint |
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82 | JOIN pg_class ON pg_constraint.conrelid=pg_constraint.oid |
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83 | JOIN pg_namespace ON pg_constraint.connamespace=pg_namespace.oid |
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84 | WHERE pg_namespace.nspname='public' AND pg_constraint.conname=t |
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85 | LOOP |
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86 | r := r || d || 'Constraint ' || c.conname || ' von ' || c.relname || ' gelöscht.'; |
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87 | EXECUTE 'ALTER TABLE ' || c.relname || ' DROP CONSTRAINT ' || c.conname; |
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88 | d := E'\n'; |
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89 | END LOOP; |
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90 | |
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91 | RETURN r; |
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92 | END; |
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93 | $$ LANGUAGE plpgsql; |
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94 | |
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95 | -- Alle ALKIS-Tabellen löschen |
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96 | SELECT alkis_dropobject('alkis_drop'); |
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97 | CREATE FUNCTION alkis_drop() RETURNS varchar AS $$ |
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98 | DECLARE |
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99 | c RECORD; |
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100 | r VARCHAR; |
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101 | d VARCHAR; |
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102 | BEGIN |
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103 | r := ''; |
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104 | d := ''; |
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105 | -- drop tables & views |
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106 | FOR c IN SELECT table_type,table_name FROM information_schema.tables WHERE table_schema='public' AND ( substr(table_name,1,3) IN ('ax_','ap_','ks_') OR table_name IN ('alkis_beziehungen','delete')) ORDER BY table_type DESC LOOP |
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107 | IF c.table_type = 'VIEW' THEN |
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108 | r := r || d || 'Sicht ' || c.table_name || ' gelöscht.'; |
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109 | EXECUTE 'DROP VIEW ' || c.table_name || ' CASCADE'; |
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110 | ELSIF c.table_type = 'BASE TABLE' THEN |
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111 | r := r || d || 'Tabelle ' || c.table_name || ' gelöscht.'; |
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112 | EXECUTE 'DROP TABLE ' || c.table_name || ' CASCADE'; |
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113 | ELSE |
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114 | r := r || d || 'Typ ' || c.table_type || '.' || c.table_name || ' unerwartet.'; |
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115 | END IF; |
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116 | d := E'\n'; |
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117 | END LOOP; |
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118 | |
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119 | -- clean geometry_columns |
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120 | DELETE FROM geometry_columns |
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121 | WHERE f_table_schema='public' |
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122 | AND ( substr(f_table_name,1,2) IN ('ax_','ap_','ks_') |
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123 | OR f_table_name IN ('alkis_beziehungen','delete') ); |
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124 | |
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125 | RETURN r; |
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126 | END; |
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127 | $$ LANGUAGE plpgsql; |
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128 | |
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129 | -- Alle ALKIS-Tabellen leeren |
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130 | SELECT alkis_dropobject('alkis_delete'); |
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131 | CREATE FUNCTION alkis_delete() RETURNS varchar AS $$ |
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132 | DECLARE |
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133 | c RECORD; |
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134 | r varchar; |
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135 | d varchar; |
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136 | BEGIN |
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137 | r := ''; |
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138 | d := ''; |
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139 | |
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140 | -- drop views |
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141 | FOR c IN |
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142 | SELECT table_name |
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143 | FROM information_schema.tables |
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144 | WHERE table_schema='public' AND table_type='BASE TABLE' |
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145 | AND ( substr(table_name,1,3) IN ('ax_','ap_','ks_') |
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146 | OR table_name IN ('alkis_beziehungen','delete') ) |
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147 | LOOP |
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148 | r := r || d || c.table_name || ' wurde geleert.'; |
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149 | EXECUTE 'DELETE FROM '||c.table_name; |
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150 | d := E'\n'; |
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151 | END LOOP; |
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152 | |
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153 | RETURN r; |
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154 | END; |
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155 | $$ LANGUAGE plpgsql; |
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156 | |
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157 | -- Ãbersicht erzeugen, die alle alkis_beziehungen mit den Typen der beteiligen ALKIS-Objekte versieht |
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158 | SELECT alkis_dropobject('alkis_mviews'); |
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159 | CREATE FUNCTION alkis_mviews() RETURNS varchar AS $$ |
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160 | DECLARE |
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161 | sql TEXT; |
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162 | delim TEXT; |
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163 | c RECORD; |
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164 | BEGIN |
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165 | SELECT alkis_dropobject('vbeziehungen') INTO sql; |
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166 | SELECT alkis_dropobject('vobjekte') INTO sql; |
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167 | |
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168 | delim := ''; |
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169 | sql := 'CREATE VIEW vobjekte AS '; |
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170 | |
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171 | FOR c IN SELECT table_name FROM information_schema.columns WHERE column_name='gml_id' AND substr(table_name,1,3) IN ('ax_','ap_','ks_') LOOP |
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172 | sql := sql || delim || 'SELECT gml_id,beginnt,''' || c.table_name || ''' AS table_name FROM ' || c.table_name; |
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173 | delim := ' UNION '; |
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174 | END LOOP; |
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175 | |
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176 | EXECUTE sql; |
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177 | |
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178 | -- CREATE UNIQUE INDEX vobjekte_gmlid ON vobjekte(gml_id,beginnt); |
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179 | -- CREATE INDEX vobjekte_table ON vobjekte(table_name); |
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180 | |
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181 | CREATE VIEW vbeziehungen AS |
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182 | SELECT beziehung_von,(SELECT table_name FROM vobjekte WHERE gml_id=beziehung_von) AS typ_von |
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183 | ,beziehungsart |
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184 | ,beziehung_zu,(SELECT table_name FROM vobjekte WHERE gml_id=beziehung_zu) AS typ_zu |
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185 | FROM alkis_beziehungen; |
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186 | |
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187 | -- CREATE INDEX vbeziehungen_von ON vbeziehungen(beziehung_von); |
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188 | -- CREATE INDEX vbeziehungen_vontyp ON vbeziehungen(typ_von); |
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189 | -- CREATE INDEX vbeziehungen_art ON vbeziehungen(beziehungsart); |
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190 | -- CREATE INDEX vbeziehungen_zu ON vbeziehungen(beziehung_zu); |
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191 | -- CREATE INDEX vbeziehungen_zutyp ON vbeziehungen(typ_zu); |
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192 | |
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193 | RETURN 'ALKIS-Views erzeugt.'; |
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194 | END; |
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195 | $$ LANGUAGE plpgsql; |
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196 | |
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197 | -- Indizes erzeugen |
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198 | SELECT alkis_dropobject('alkis_update_schema'); |
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199 | CREATE FUNCTION alkis_update_schema() RETURNS varchar AS $$ |
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200 | DECLARE |
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201 | sql TEXT; |
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202 | c RECORD; |
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203 | i RECORD; |
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204 | n INTEGER; |
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205 | BEGIN |
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206 | -- Spalten in delete ergÀnzen |
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207 | SELECT count(*) INTO n FROM information_schema.columns WHERE table_schema='public' AND table_name='delete' AND column_name='ignored'; |
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208 | IF n=0 THEN |
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209 | ALTER TABLE "delete" ADD ignored BOOLEAN; |
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210 | END IF; |
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211 | |
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212 | SELECT count(*) INTO n FROM information_schema.columns WHERE table_schema='public' AND table_name='delete' AND column_name='context'; |
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213 | IF n=0 THEN |
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214 | ALTER TABLE "delete" ADD context VARCHAR; |
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215 | END IF; |
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216 | |
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217 | SELECT count(*) INTO n FROM information_schema.columns WHERE table_schema='public' AND table_name='delete' AND column_name='safetoignore'; |
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218 | IF n=0 THEN |
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219 | ALTER TABLE "delete" ADD safetoignore VARCHAR; |
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220 | END IF; |
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221 | |
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222 | SELECT count(*) INTO n FROM information_schema.columns WHERE table_schema='public' AND table_name='delete' AND column_name='replacedby'; |
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223 | IF n=0 THEN |
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224 | ALTER TABLE "delete" ADD replacedBy VARCHAR; |
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225 | END IF; |
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226 | |
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227 | -- Spalte identifier ergÀnzen, wo sie fehlt |
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228 | FOR c IN SELECT table_name FROM information_schema.columns a WHERE a.column_name='gml_id' |
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229 | AND EXISTS (SELECT * FROM information_schema.columns b WHERE b.column_name='beginnt' AND a.table_catalog=b.table_catalog AND a.table_schema=b.table_schema AND a.table_name=b.table_name) |
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230 | AND NOT EXISTS (SELECT * FROM information_schema.columns b WHERE b.column_name='identifier' AND a.table_catalog=b.table_catalog AND a.table_schema=b.table_schema AND a.table_name=b.table_name) |
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231 | LOOP |
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232 | EXECUTE 'ALTER TABLE ' || c.table_name || ' ADD identifier character(44)'; |
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233 | END LOOP; |
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234 | |
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235 | -- Spalte endet ergÀnzen, wo sie fehlt |
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236 | FOR c IN SELECT table_name FROM information_schema.columns a WHERE a.column_name='gml_id' |
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237 | AND EXISTS (SELECT * FROM information_schema.columns b WHERE b.column_name='beginnt' AND a.table_catalog=b.table_catalog AND a.table_schema=b.table_schema AND a.table_name=b.table_name) |
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238 | AND NOT EXISTS (SELECT * FROM information_schema.columns b WHERE b.column_name='endet' AND a.table_catalog=b.table_catalog AND a.table_schema=b.table_schema AND a.table_name=b.table_name) |
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239 | LOOP |
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240 | EXECUTE 'ALTER TABLE ' || c.table_name || ' ADD endet character(20) CHECK (endet>beginnt)'; |
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241 | END LOOP; |
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242 | |
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243 | -- Lebensdauer-Constraint ergÀnzen |
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244 | FOR c IN SELECT table_name FROM information_schema.columns a WHERE a.column_name='gml_id' |
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245 | AND EXISTS (SELECT * FROM information_schema.columns b WHERE b.column_name='beginnt' AND a.table_catalog=b.table_catalog AND a.table_schema=b.table_schema AND a.table_name=b.table_name) |
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246 | AND EXISTS (SELECT * FROM information_schema.columns b WHERE b.column_name='endet' AND a.table_catalog=b.table_catalog AND a.table_schema=b.table_schema AND a.table_name=b.table_name) |
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247 | LOOP |
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248 | SELECT alkis_dropobject(c.table_name||'_lebensdauer'); |
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249 | EXECUTE 'ALTER TABLE ' || c.table_name || ' ADD CONSTRAINT ' || c.table_name || '_lebensdauer CHECK (beginnt IS NOT NULL AND endet>beginnt)'; |
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250 | END LOOP; |
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251 | |
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252 | -- Indizes aktualisieren |
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253 | FOR c IN SELECT table_name FROM information_schema.columns a WHERE a.column_name='gml_id' |
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254 | AND EXISTS (SELECT * FROM information_schema.columns b WHERE b.column_name='beginnt' AND a.table_catalog=b.table_catalog AND a.table_schema=b.table_schema AND a.table_name=b.table_name) |
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255 | LOOP |
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256 | -- Vorhandene Indizes droppen (TODO: Löscht auch die SonderfÀlle - entfernen) |
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257 | FOR i IN EXECUTE 'SELECT indexname FROM pg_indexes WHERE NOT indexname LIKE ''%_pk'' AND schemaname=''public'' AND tablename='''||c.table_name||'''' LOOP |
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258 | EXECUTE 'DROP INDEX ' || i.indexname; |
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259 | END LOOP; |
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260 | |
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261 | -- Indizes erzeugen |
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262 | EXECUTE 'CREATE UNIQUE INDEX ' || c.table_name || '_id ON ' || c.table_name || '(gml_id,beginnt)'; |
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263 | EXECUTE 'CREATE UNIQUE INDEX ' || c.table_name || '_ident ON ' || c.table_name || '(identifier)'; |
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264 | EXECUTE 'CREATE INDEX ' || c.table_name || '_gmlid ON ' || c.table_name || '(gml_id)'; |
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265 | EXECUTE 'CREATE INDEX ' || c.table_name || '_beginnt ON ' || c.table_name || '(beginnt)'; |
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266 | EXECUTE 'CREATE INDEX ' || c.table_name || '_endet ON ' || c.table_name || '(endet)'; |
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267 | END LOOP; |
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268 | |
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269 | -- Geometrieindizes aktualisieren |
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270 | FOR c IN SELECT table_name FROM information_schema.columns a WHERE a.column_name='gml_id' |
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271 | AND EXISTS (SELECT * FROM information_schema.columns b WHERE b.column_name='wkb_geometry' AND a.table_catalog=b.table_catalog AND a.table_schema=b.table_schema AND a.table_name=b.table_name) |
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272 | LOOP |
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273 | EXECUTE 'CREATE INDEX ' || c.table_name || '_geom ON ' || c.table_name || ' USING GIST (wkb_geometry)'; |
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274 | END LOOP; |
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275 | |
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276 | RETURN 'Schema aktualisiert.'; |
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277 | END; |
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278 | $$ LANGUAGE plpgsql; |
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279 | |
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280 | -- Im Trigger 'delete_feature_trigger' muss eine dieser beiden Funktionen |
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281 | -- (delete_feature_hist oder delete_feature_kill) verlinkt werden, je nachdem ob nur |
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282 | -- aktuelle oder auch historische Objekte in der Datenbank gefÃŒhrt werden sollen. |
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283 | |
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284 | -- Löschsatz verarbeiten (MIT Historie) |
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285 | -- context='delete' => "endet" auf aktuelle Zeit setzen |
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286 | -- context='replace' => "endet" des ersetzten auf "beginnt" des neuen Objekts setzen |
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287 | CREATE OR REPLACE FUNCTION delete_feature_hist() RETURNS TRIGGER AS $$ |
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288 | DECLARE |
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289 | sql TEXT; |
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290 | gml_id TEXT; |
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291 | endete TEXT; |
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292 | n INTEGER; |
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293 | BEGIN |
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294 | NEW.context := lower(NEW.context); |
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295 | gml_id := substr(NEW.featureid, 1, 16); |
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296 | |
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297 | IF NEW.context IS NULL THEN |
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298 | NEW.context := 'delete'; |
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299 | END IF; |
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300 | |
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301 | IF NEW.context='delete' THEN |
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302 | endete := to_char(CURRENT_TIMESTAMP AT TIME ZONE 'UTC','YYYY-MM-DD"T"HH24:MI:SS"Z"'); |
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303 | |
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304 | ELSIF NEW.context='replace' THEN |
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305 | NEW.safetoignore := lower(NEW.safetoignore); |
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306 | |
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307 | IF NEW.safetoignore IS NULL THEN |
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308 | RAISE EXCEPTION '%: safeToIgnore nicht gesetzt.', NEW.featureid; |
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309 | ELSIF NEW.safetoignore<>'true' AND NEW.safetoignore<>'false' THEN |
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310 | RAISE EXCEPTION '%: safeToIgnore ''%'' ungÃŒltig (''true'' oder ''false'' erwartet).', NEW.featureid, NEW.safetoignore; |
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311 | END IF; |
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312 | |
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313 | IF NEW.replacedBy IS NULL OR length(NEW.replacedBy)<16 THEN |
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314 | IF NEW.safetoignore = 'true' THEN |
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315 | RAISE NOTICE '%: Nachfolger ''%'' nicht richtig gesetzt - ignoriert', NEW.featureid, NEW.replacedBy; |
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316 | NEW.ignored := true; |
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317 | RETURN NEW; |
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318 | ELSE |
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319 | RAISE EXCEPTION '%: Nachfolger ''%'' nicht richtig gesetzt - Abbruch', NEW.featureid, NEW.replacedBy; |
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320 | END IF; |
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321 | END IF; |
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322 | |
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323 | IF length(NEW.replacedBy)=16 THEN |
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324 | EXECUTE 'SELECT beginnt FROM ' || NEW.typename || |
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325 | ' WHERE gml_id=''' || NEW.replacedBy || ''' AND endet IS NULL' || |
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326 | ' ORDER BY beginnt DESC LIMIT 1' |
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327 | INTO endete; |
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328 | ELSE |
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329 | -- replaceBy mit Timestamp |
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330 | EXECUTE 'SELECT beginnt FROM ' || NEW.typename || |
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331 | ' WHERE identifier=''urn:adv:oid:' || NEW.replacedBy || '''' |
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332 | INTO endete; |
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333 | IF endete IS NULL THEN |
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334 | EXECUTE 'SELECT beginnt FROM ' || NEW.typename || |
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335 | ' WHERE gml_id=''' || substr(NEW.replacedBy,1,16) || ''' AND endet IS NULL' || |
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336 | ' ORDER BY beginnt DESC LIMIT 1' |
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337 | INTO endete; |
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338 | END IF; |
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339 | END IF; |
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340 | |
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341 | IF endete IS NULL THEN |
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342 | IF NEW.safetoignore = 'true' THEN |
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343 | RAISE NOTICE '%: Nachfolger % nicht gefunden - ignoriert', NEW.featureid, NEW.replacedBy; |
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344 | NEW.ignored := true; |
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345 | RETURN NEW; |
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346 | ELSE |
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347 | RAISE EXCEPTION '%: Nachfolger % nicht gefunden', NEW.featureid, NEW.replacedBy; |
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348 | END IF; |
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349 | END IF; |
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350 | ELSE |
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351 | RAISE EXCEPTION '%: UngÃŒltiger Kontext % (''delete'' oder ''replace'' erwartet).', NEW.featureid, NEW.context; |
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352 | END IF; |
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353 | |
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354 | sql := 'UPDATE ' || NEW.typename |
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355 | || ' SET endet=''' || endete || '''' |
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356 | || ' WHERE gml_id=''' || gml_id || '''' |
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357 | || ' AND endet IS NULL' |
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358 | || ' AND beginnt<''' || endete || ''''; |
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359 | -- RAISE NOTICE 'SQL: %', sql; |
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360 | EXECUTE sql; |
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361 | GET DIAGNOSTICS n = ROW_COUNT; |
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362 | IF n<>1 THEN |
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363 | RAISE NOTICE 'SQL: %', sql; |
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364 | IF NEW.context = 'delete' OR NEW.safetoignore = 'true' THEN |
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365 | RAISE NOTICE '%: Untergangsdatum von % Objekten statt nur einem auf % gesetzt - ignoriert', NEW.featureid, n, endete; |
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366 | NEW.ignored := true; |
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367 | RETURN NEW; |
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368 | ELSE |
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369 | RAISE EXCEPTION '%: Untergangsdatum von % Objekten statt nur einem auf % gesetzt - Abbruch', NEW.featureid, n, endete; |
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370 | END IF; |
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371 | END IF; |
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372 | |
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373 | NEW.ignored := false; |
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374 | RETURN NEW; |
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375 | END; |
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376 | $$ LANGUAGE plpgsql; |
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377 | |
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378 | |
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379 | -- "delete" und "replace" verarbeiten (OHNE Historie). Historische Objekte werden sofort gelöscht. |
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380 | -- Geaendert 2014-02-03 auf Vorschlag M.B. Krs. Unna |
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381 | CREATE OR REPLACE FUNCTION delete_feature_kill() RETURNS TRIGGER AS $$ |
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382 | DECLARE |
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383 | query TEXT; |
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384 | begsql TEXT; |
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385 | aktbeg TEXT; |
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386 | gml_id TEXT; |
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387 | query_bez TEXT; |
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388 | BEGIN |
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389 | NEW.typename := lower(NEW.typename); |
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390 | NEW.context := lower(NEW.context); |
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391 | gml_id := substr(NEW.featureid, 1, 16); |
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392 | |
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393 | IF NEW.context IS NULL THEN |
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394 | NEW.context := 'delete'; |
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395 | END IF; |
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396 | |
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397 | IF NEW.context='delete' THEN -- Ersatzloses Loeschen des Objektes |
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398 | -- In der Objekt-Tabelle |
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399 | EXECUTE 'DELETE FROM ' || NEW.typename || ' WHERE gml_id = ''' || gml_id || ''''; |
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400 | -- Beziehungen von und zu dem Objekt sind hinfaellig |
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401 | EXECUTE 'DELETE FROM alkis_beziehungen WHERE beziehung_von = ''' || gml_id || ''' OR beziehung_zu = ''' || gml_id || ''''; |
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402 | --RAISE NOTICE 'Lösche gml_id % in % und Beziehungen', gml_id, NEW.typename; |
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403 | |
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404 | ELSE -- Ersetzen eines Objektes (Replace). In der Objekt-Tabelle sind jetzt bereits 2 Objekte vorhanden (alt und neu). |
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405 | -- beginnt-Wert des aktuellen Objektes ermitteln |
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406 | begsql := 'SELECT max(beginnt) FROM ' || NEW.typename || ' WHERE gml_id = ''' || substr(NEW.replacedBy, 1, 16) || ''' AND endet IS NULL'; |
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407 | EXECUTE begsql INTO aktbeg; |
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408 | -- Alte Objekte entfernen |
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409 | EXECUTE 'DELETE FROM ' || NEW.typename || ' WHERE gml_id = ''' || gml_id || ''' AND beginnt < ''' || aktbeg || ''''; |
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410 | -- Beziehungen vom alten Objekt entfernen, die aus frueheren Importen stammen |
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411 | EXECUTE 'DELETE FROM alkis_beziehungen WHERE beziehung_von = ''' || gml_id || ''' AND import_id < (SELECT max(id) FROM import)'; |
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412 | END IF; |
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413 | |
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414 | NEW.ignored := false; |
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415 | RETURN NEW; |
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416 | END; |
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417 | $$ LANGUAGE plpgsql; |
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418 | |
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419 | |
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420 | -- BeziehungssÀtze aufrÀumen |
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421 | CREATE OR REPLACE FUNCTION alkis_beziehung_inserted() RETURNS TRIGGER AS $$ |
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422 | BEGIN |
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423 | DELETE FROM alkis_beziehungen WHERE ogc_fid<NEW.ogc_fid AND beziehung_von=NEW.beziehung_von AND beziehungsart=NEW.beziehungsart AND beziehung_zu=NEW.beziehung_zu; |
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424 | RETURN NEW; |
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425 | END; |
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426 | $$ LANGUAGE plpgsql; |
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427 | |
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428 | |
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429 | -- Wenn die Datenbank MIT Historie angelegt wurde, kann nach dem Laden hiermit aufgerÀumt werden. |
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430 | CREATE OR REPLACE FUNCTION alkis_delete_all_endet() RETURNS void AS $$ |
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431 | DECLARE |
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432 | c RECORD; |
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433 | BEGIN |
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434 | -- In allen Tabellen die Objekte löschen, die ein Ende-Datum haben |
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435 | FOR c IN |
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436 | SELECT table_name |
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437 | FROM information_schema.columns a |
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438 | WHERE a.column_name='endet' |
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439 | ORDER BY table_name |
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440 | LOOP |
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441 | EXECUTE 'DELETE FROM ' || c.table_name || ' WHERE NOT endet IS NULL'; |
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442 | -- RAISE NOTICE 'Lösche ''endet'' in: %', c.table_name; |
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443 | END LOOP; |
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444 | END; |
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445 | $$ LANGUAGE plpgsql; |
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446 | |
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447 | |
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448 | -- Wenn die Datenbank ohne Historie gefÃŒhrt wird, ist das Feld "identifier" verzichtbar. |
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449 | -- Diese wird nur von der Trigger-Version fÃŒr die Version MIT Historie verwendet. |
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450 | -- Es kann aus allen Tabellen entfernt werden. |
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451 | CREATE OR REPLACE FUNCTION alkis_drop_all_identifier() RETURNS void AS $$ |
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452 | DECLARE |
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453 | c RECORD; |
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454 | BEGIN |
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455 | FOR c IN |
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456 | SELECT table_name |
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457 | FROM information_schema.columns a |
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458 | WHERE a.column_name='identifier' |
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459 | ORDER BY table_name |
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460 | LOOP |
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461 | EXECUTE 'ALTER TABLE ' || c.table_name || ' DROP COLUMN identifier'; |
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462 | RAISE NOTICE 'Entferne ''identifier'' aus: %', c.table_name; |
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463 | END LOOP; |
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464 | END; |
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465 | $$ LANGUAGE plpgsql; |
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466 | |
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467 | |
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468 | -- Funktion zum Ermitteln der letzten import_id |
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469 | CREATE OR REPLACE FUNCTION get_import_id() RETURNS TRIGGER AS $$ |
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470 | BEGIN |
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471 | EXECUTE 'SELECT max(id) FROM import' INTO NEW.import_id; |
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472 | RETURN NEW; |
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473 | END; |
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474 | $$ LANGUAGE plpgsql; |
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