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1 | package SQL::Translator::Parser::PostgreSQL; |
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2 | |
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3 | =head1 NAME |
4 | |
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5 | SQL::Translator::Parser::PostgreSQL - parser for PostgreSQL |
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6 | |
7 | =head1 SYNOPSIS |
8 | |
9 | use SQL::Translator; |
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10 | use SQL::Translator::Parser::PostgreSQL; |
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11 | |
12 | my $translator = SQL::Translator->new; |
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13 | $translator->parser("SQL::Translator::Parser::PostgreSQL"); |
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14 | |
15 | =head1 DESCRIPTION |
16 | |
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17 | The grammar was started from the MySQL parsers. Here is the description |
18 | from PostgreSQL: |
19 | |
20 | Table: |
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21 | (http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=sql-createtable.html) |
22 | |
23 | CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name ( |
24 | { column_name data_type [ DEFAULT default_expr ] |
25 | [ column_constraint [, ... ] ] |
26 | | table_constraint } [, ... ] |
27 | ) |
28 | [ INHERITS ( parent_table [, ... ] ) ] |
29 | [ WITH OIDS | WITHOUT OIDS ] |
30 | |
31 | where column_constraint is: |
32 | |
33 | [ CONSTRAINT constraint_name ] |
34 | { NOT NULL | NULL | UNIQUE | PRIMARY KEY | |
35 | CHECK (expression) | |
36 | REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ] |
37 | [ ON DELETE action ] [ ON UPDATE action ] } |
38 | [ DEFERRABLE | NOT DEFERRABLE ] |
39 | [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
40 | |
41 | and table_constraint is: |
42 | |
43 | [ CONSTRAINT constraint_name ] |
44 | { UNIQUE ( column_name [, ... ] ) | |
45 | PRIMARY KEY ( column_name [, ... ] ) | |
46 | CHECK ( expression ) | |
47 | FOREIGN KEY ( column_name [, ... ] ) |
48 | REFERENCES reftable [ ( refcolumn [, ... ] ) ] |
49 | [ MATCH FULL | MATCH PARTIAL ] |
50 | [ ON DELETE action ] [ ON UPDATE action ] } |
51 | [ DEFERRABLE | NOT DEFERRABLE ] |
52 | [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
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53 | |
54 | Index: |
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55 | (http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=sql-createindex.html) |
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56 | |
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57 | CREATE [ UNIQUE ] INDEX index_name ON table |
58 | [ USING acc_method ] ( column [ ops_name ] [, ...] ) |
59 | [ WHERE predicate ] |
60 | CREATE [ UNIQUE ] INDEX index_name ON table |
61 | [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] ) |
62 | [ WHERE predicate ] |
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63 | |
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64 | Alter table: |
65 | |
66 | ALTER TABLE [ ONLY ] table [ * ] |
67 | ADD [ COLUMN ] column type [ column_constraint [ ... ] ] |
68 | ALTER TABLE [ ONLY ] table [ * ] |
69 | ALTER [ COLUMN ] column { SET DEFAULT value | DROP DEFAULT } |
70 | ALTER TABLE [ ONLY ] table [ * ] |
71 | ALTER [ COLUMN ] column SET STATISTICS integer |
72 | ALTER TABLE [ ONLY ] table [ * ] |
73 | RENAME [ COLUMN ] column TO newcolumn |
74 | ALTER TABLE table |
75 | RENAME TO new_table |
76 | ALTER TABLE table |
77 | ADD table_constraint_definition |
78 | ALTER TABLE [ ONLY ] table |
79 | DROP CONSTRAINT constraint { RESTRICT | CASCADE } |
80 | ALTER TABLE table |
81 | OWNER TO new_owner |
82 | |
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83 | View table: |
84 | |
85 | CREATE [ OR REPLACE ] VIEW view [ ( column name list ) ] AS SELECT query |
86 | |
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87 | =cut |
88 | |
89 | use strict; |
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90 | use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ]; |
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91 | $VERSION = '1.59'; |
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92 | $DEBUG = 0 unless defined $DEBUG; |
93 | |
94 | use Data::Dumper; |
95 | use Parse::RecDescent; |
96 | use Exporter; |
97 | use base qw(Exporter); |
98 | |
99 | @EXPORT_OK = qw(parse); |
100 | |
101 | # Enable warnings within the Parse::RecDescent module. |
102 | $::RD_ERRORS = 1; # Make sure the parser dies when it encounters an error |
103 | $::RD_WARN = 1; # Enable warnings. This will warn on unused rules &c. |
104 | $::RD_HINT = 1; # Give out hints to help fix problems. |
105 | |
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106 | $GRAMMAR = q! |
107 | |
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108 | { my ( %tables, @views, $table_order, $field_order, @table_comments) } |
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109 | |
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110 | # |
111 | # The "eofile" rule makes the parser fail if any "statement" rule |
112 | # fails. Otherwise, the first successful match by a "statement" |
113 | # won't cause the failure needed to know that the parse, as a whole, |
114 | # failed. -ky |
115 | # |
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116 | startrule : statement(s) eofile { { tables => \%tables, views => \@views } } |
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117 | |
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118 | eofile : /^\Z/ |
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119 | |
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120 | |
121 | statement : create |
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122 | | comment_on_table |
123 | | comment_on_column |
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124 | | comment_on_other |
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125 | | comment |
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126 | | alter |
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127 | | grant |
128 | | revoke |
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129 | | drop |
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130 | | insert |
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131 | | connect |
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132 | | update |
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133 | | set |
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134 | | select |
135 | | copy |
136 | | readin_symbol |
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137 | | commit |
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138 | | <error> |
139 | |
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140 | commit : /commit/i ';' |
141 | |
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142 | connect : /^\s*\\\connect.*\n/ |
143 | |
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144 | set : /set/i /[^;]*/ ';' |
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145 | |
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146 | revoke : /revoke/i WORD(s /,/) /on/i TABLE(?) table_id /from/i name_with_opt_quotes(s /,/) ';' |
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147 | { |
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148 | my $table_info = $item{'table_id'}; |
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149 | my $schema_name = $table_info->{'schema_name'}; |
150 | my $table_name = $table_info->{'table_name'}; |
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151 | push @{ $tables{ $table_name }{'permissions'} }, { |
152 | type => 'revoke', |
153 | actions => $item[2], |
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154 | users => $item[7], |
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155 | } |
156 | } |
157 | |
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158 | revoke : /revoke/i WORD(s /,/) /on/i SCHEMA(?) schema_name /from/i name_with_opt_quotes(s /,/) ';' |
159 | { 1 } |
160 | |
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161 | grant : /grant/i WORD(s /,/) /on/i TABLE(?) table_id /to/i name_with_opt_quotes(s /,/) ';' |
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162 | { |
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163 | my $table_info = $item{'table_id'}; |
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164 | my $schema_name = $table_info->{'schema_name'}; |
165 | my $table_name = $table_info->{'table_name'}; |
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166 | push @{ $tables{ $table_name }{'permissions'} }, { |
167 | type => 'grant', |
168 | actions => $item[2], |
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169 | users => $item[7], |
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170 | } |
171 | } |
172 | |
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173 | grant : /grant/i WORD(s /,/) /on/i SCHEMA(?) schema_name /to/i name_with_opt_quotes(s /,/) ';' |
174 | { 1 } |
175 | |
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176 | drop : /drop/i /[^;]*/ ';' |
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177 | |
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178 | string : |
179 | /'(\\.|''|[^\\\'])*'/ |
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180 | |
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181 | nonstring : /[^;\'"]+/ |
182 | |
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183 | statement_body : string | nonstring |
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184 | |
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185 | insert : /insert/i statement_body(s?) ';' |
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186 | |
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187 | update : /update/i statement_body(s?) ';' |
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188 | |
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189 | # |
190 | # Create table. |
191 | # |
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192 | create : CREATE temporary(?) TABLE table_id '(' create_definition(s? /,/) ')' table_option(s?) ';' |
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193 | { |
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194 | my $table_info = $item{'table_id'}; |
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195 | my $schema_name = $table_info->{'schema_name'}; |
196 | my $table_name = $table_info->{'table_name'}; |
197 | $tables{ $table_name }{'order'} = ++$table_order; |
198 | $tables{ $table_name }{'schema_name'} = $schema_name; |
199 | $tables{ $table_name }{'table_name'} = $table_name; |
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200 | |
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201 | $tables{ $table_name }{'temporary'} = $item[2][0]; |
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202 | |
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203 | if ( @table_comments ) { |
204 | $tables{ $table_name }{'comments'} = [ @table_comments ]; |
205 | @table_comments = (); |
206 | } |
207 | |
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208 | my @constraints; |
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209 | for my $definition ( @{ $item[6] } ) { |
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210 | if ( $definition->{'supertype'} eq 'field' ) { |
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211 | my $field_name = $definition->{'name'}; |
212 | $tables{ $table_name }{'fields'}{ $field_name } = |
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213 | { %$definition, order => $field_order++ }; |
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214 | |
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215 | for my $constraint ( @{ $definition->{'constraints'} || [] } ) { |
216 | $constraint->{'fields'} = [ $field_name ]; |
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217 | push @{ $tables{ $table_name }{'constraints'} }, |
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218 | $constraint; |
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219 | } |
220 | } |
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221 | elsif ( $definition->{'supertype'} eq 'constraint' ) { |
222 | push @{ $tables{ $table_name }{'constraints'} }, $definition; |
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223 | } |
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224 | elsif ( $definition->{'supertype'} eq 'index' ) { |
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225 | push @{ $tables{ $table_name }{'indices'} }, $definition; |
226 | } |
227 | } |
228 | |
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229 | for my $option ( @{ $item[8] } ) { |
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230 | $tables{ $table_name }{'table_options(s?)'}{ $option->{'type'} } = |
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231 | $option; |
232 | } |
233 | |
234 | 1; |
235 | } |
236 | |
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237 | create : CREATE unique(?) /(index|key)/i index_name /on/i table_id using_method(?) '(' field_name(s /,/) ')' where_predicate(?) ';' |
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238 | { |
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239 | my $table_info = $item{'table_id'}; |
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240 | my $schema_name = $table_info->{'schema_name'}; |
241 | my $table_name = $table_info->{'table_name'}; |
242 | push @{ $tables{ $table_name }{'indices'} }, |
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243 | { |
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244 | name => $item{'index_name'}, |
245 | supertype => $item{'unique'}[0] ? 'constraint' : 'index', |
246 | type => $item{'unique'}[0] ? 'unique' : 'normal', |
247 | fields => $item[9], |
248 | method => $item{'using_method'}[0], |
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249 | } |
250 | ; |
251 | } |
252 | |
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253 | create : CREATE or_replace(?) temporary(?) VIEW view_id view_fields(?) /AS/i view_target ';' |
254 | { |
255 | push @views, { |
256 | schema_name => $item{view_id}{schema_name}, |
257 | view_name => $item{view_id}{view_name}, |
258 | sql => $item{view_target}, |
259 | fields => $item[6], |
260 | is_temporary => $item[3][0], |
261 | } |
262 | } |
263 | |
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264 | # |
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265 | # Create anything else (e.g., domain, etc.) |
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266 | # |
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267 | create : CREATE WORD /[^;]+/ ';' |
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268 | { @table_comments = (); } |
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269 | |
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270 | using_method : /using/i WORD { $item[2] } |
271 | |
272 | where_predicate : /where/i /[^;]+/ |
273 | |
274 | create_definition : field |
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275 | | table_constraint |
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276 | | <error> |
277 | |
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278 | comment : /^\s*(?:#|-{2})(.*)\n/ |
279 | { |
280 | my $comment = $item[1]; |
281 | $comment =~ s/^\s*(#|-*)\s*//; |
282 | $comment =~ s/\s*$//; |
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283 | $return = $comment; |
284 | push @table_comments, $comment; |
285 | } |
286 | |
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287 | comment_on_table : /comment/i /on/i /table/i table_id /is/i comment_phrase ';' |
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288 | { |
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289 | my $table_info = $item{'table_id'}; |
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290 | my $schema_name = $table_info->{'schema_name'}; |
291 | my $table_name = $table_info->{'table_name'}; |
292 | push @{ $tables{ $table_name }{'comments'} }, $item{'comment_phrase'}; |
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293 | } |
294 | |
295 | comment_on_column : /comment/i /on/i /column/i column_name /is/i comment_phrase ';' |
296 | { |
297 | my $table_name = $item[4]->{'table'}; |
298 | my $field_name = $item[4]->{'field'}; |
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299 | if ($tables{ $table_name }{'fields'}{ $field_name } ) { |
300 | push @{ $tables{ $table_name }{'fields'}{ $field_name }{'comments'} }, |
301 | $item{'comment_phrase'}; |
302 | } |
303 | else { |
304 | die "No such column as $table_name.$field_name"; |
305 | } |
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306 | } |
307 | |
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308 | comment_on_other : /comment/i /on/i /\w+/ /\w+/ /is/i comment_phrase ';' |
309 | { |
310 | push(@table_comments, $item{'comment_phrase'}); |
311 | } |
312 | |
313 | # [added by cjm 20041019] |
314 | # [TODO: other comment-on types] |
315 | # for now we just have a general mechanism for handling other |
316 | # kinds of comments than table/column; I'm not sure of the best |
317 | # way to incorporate these into the datamodel |
318 | # |
319 | # this is the exhaustive list of types of comment: |
320 | #COMMENT ON DATABASE my_database IS 'Development Database'; |
321 | #COMMENT ON INDEX my_index IS 'Enforces uniqueness on employee id'; |
322 | #COMMENT ON RULE my_rule IS 'Logs UPDATES of employee records'; |
323 | #COMMENT ON SEQUENCE my_sequence IS 'Used to generate primary keys'; |
324 | #COMMENT ON TABLE my_table IS 'Employee Information'; |
325 | #COMMENT ON TYPE my_type IS 'Complex Number support'; |
326 | #COMMENT ON VIEW my_view IS 'View of departmental costs'; |
327 | #COMMENT ON COLUMN my_table.my_field IS 'Employee ID number'; |
328 | #COMMENT ON TRIGGER my_trigger ON my_table IS 'Used for R.I.'; |
329 | # |
330 | # this is tested by test 08 |
331 | |
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332 | column_name : NAME '.' NAME |
333 | { $return = { table => $item[1], field => $item[3] } } |
334 | |
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335 | comment_phrase : /null/i |
336 | { $return = 'NULL' } |
337 | |
338 | comment_phrase : /'/ comment_phrase_unquoted(s) /'/ |
339 | { my $phrase = join(' ', @{ $item[2] }); |
340 | $return = $phrase} |
341 | |
342 | # [cjm TODO: double-single quotes in a comment_phrase] |
343 | comment_phrase_unquoted : /[^\']*/ |
344 | { $return = $item[1] } |
345 | |
346 | |
347 | xxxcomment_phrase : /'.*?'|NULL/ |
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348 | { |
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349 | my $val = $item[1] || ''; |
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350 | $val =~ s/^'|'$//g; |
351 | $return = $val; |
352 | } |
353 | |
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354 | field : field_comment(s?) field_name data_type field_meta(s?) field_comment(s?) |
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355 | { |
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356 | my ( $default, @constraints, $is_pk ); |
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357 | my $is_nullable = 1; |
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358 | for my $meta ( @{ $item[4] } ) { |
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359 | if ( $meta->{'type'} eq 'default' ) { |
360 | $default = $meta; |
361 | next; |
362 | } |
363 | elsif ( $meta->{'type'} eq 'not_null' ) { |
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364 | $is_nullable = 0; |
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365 | } |
366 | elsif ( $meta->{'type'} eq 'primary_key' ) { |
367 | $is_pk = 1; |
368 | } |
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369 | |
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370 | push @constraints, $meta if $meta->{'supertype'} eq 'constraint'; |
371 | } |
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372 | |
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373 | my @comments = ( @{ $item[1] }, @{ $item[5] } ); |
374 | |
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375 | $return = { |
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376 | supertype => 'field', |
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377 | name => $item{'field_name'}, |
378 | data_type => $item{'data_type'}{'type'}, |
379 | size => $item{'data_type'}{'size'}, |
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380 | is_nullable => $is_nullable, |
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381 | default => $default->{'value'}, |
382 | constraints => [ @constraints ], |
383 | comments => [ @comments ], |
384 | is_primary_key => $is_pk || 0, |
385 | is_auto_increment => $item{'data_type'}{'is_auto_increment'}, |
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386 | } |
387 | } |
388 | | <error> |
389 | |
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390 | field_comment : /^\s*(?:#|-{2})(.*)\n/ |
391 | { |
392 | my $comment = $item[1]; |
393 | $comment =~ s/^\s*(#|-*)\s*//; |
394 | $comment =~ s/\s*$//; |
395 | $return = $comment; |
396 | } |
397 | |
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398 | field_meta : default_val |
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399 | | column_constraint |
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400 | |
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401 | view_fields : '(' field_name(s /,/) ')' |
402 | { $return = join (',', @{$item[2]} ) } |
403 | |
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404 | column_constraint : constraint_name(?) column_constraint_type deferrable(?) deferred(?) |
405 | { |
406 | my $desc = $item{'column_constraint_type'}; |
407 | my $type = $desc->{'type'}; |
408 | my $fields = $desc->{'fields'} || []; |
409 | my $expression = $desc->{'expression'} || ''; |
410 | |
411 | $return = { |
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412 | supertype => 'constraint', |
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413 | name => $item{'constraint_name'}[0] || '', |
414 | type => $type, |
415 | expression => $type eq 'check' ? $expression : '', |
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416 | deferrable => $item{'deferrable'}, |
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417 | deferred => $item{'deferred'}, |
418 | reference_table => $desc->{'reference_table'}, |
419 | reference_fields => $desc->{'reference_fields'}, |
420 | match_type => $desc->{'match_type'}, |
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421 | on_delete => $desc->{'on_delete'} || $desc->{'on_delete_do'}, |
422 | on_update => $desc->{'on_update'} || $desc->{'on_update_do'}, |
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423 | } |
424 | } |
425 | |
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426 | constraint_name : /constraint/i name_with_opt_quotes { $item[2] } |
427 | |
428 | column_constraint_type : /not null/i { $return = { type => 'not_null' } } |
429 | | |
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430 | /null/i |
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431 | { $return = { type => 'null' } } |
432 | | |
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433 | /unique/i |
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434 | { $return = { type => 'unique' } } |
435 | | |
436 | /primary key/i |
437 | { $return = { type => 'primary_key' } } |
438 | | |
439 | /check/i '(' /[^)]+/ ')' |
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440 | { $return = { type => 'check', expression => $item[3] } } |
0efb6e1b |
441 | | |
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442 | /references/i table_id parens_word_list(?) match_type(?) key_action(s?) |
0efb6e1b |
443 | { |
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444 | my $table_info = $item{'table_id'}; |
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445 | my $schema_name = $table_info->{'schema_name'}; |
446 | my $table_name = $table_info->{'table_name'}; |
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447 | my ( $on_delete, $on_update ); |
448 | for my $action ( @{ $item[5] || [] } ) { |
449 | $on_delete = $action->{'action'} if $action->{'type'} eq 'delete'; |
450 | $on_update = $action->{'action'} if $action->{'type'} eq 'update'; |
451 | } |
452 | |
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453 | $return = { |
454 | type => 'foreign_key', |
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455 | reference_table => $table_name, |
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456 | reference_fields => $item[3][0], |
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457 | match_type => $item[4][0], |
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458 | on_delete => $on_delete, |
459 | on_update => $on_update, |
ba1a1626 |
460 | } |
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461 | } |
462 | |
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463 | table_id : schema_qualification(?) name_with_opt_quotes { |
464 | $return = { schema_name => $item[1][0], table_name => $item[2] } |
a20abbda |
465 | } |
466 | |
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467 | view_id : schema_qualification(?) name_with_opt_quotes { |
468 | $return = { schema_name => $item[1][0], view_name => $item[2] } |
469 | } |
470 | |
471 | view_target : /select|with/i /[^;]+/ { |
472 | $return = "$item[1] $item[2]"; |
473 | } |
474 | |
475 | # SELECT views _may_ support outer parens, and we used to produce |
476 | # such sql, although non-standard. Use ugly lookeahead to parse |
477 | view_target : '(' /select/i / [^;]+ (?= \) ) /x ')' { |
478 | $return = "$item[2] $item[3]" |
479 | } |
480 | |
481 | view_target_spec : |
482 | |
483 | schema_qualification : name_with_opt_quotes '.' |
4422e22a |
484 | |
34338cb2 |
485 | schema_name : name_with_opt_quotes |
486 | |
0efb6e1b |
487 | field_name : name_with_opt_quotes |
4422e22a |
488 | |
0012a163 |
489 | name_with_opt_quotes : double_quote(?) NAME double_quote(?) { $item[2] } |
4422e22a |
490 | |
0efb6e1b |
491 | double_quote: /"/ |
4422e22a |
492 | |
d4056aa7 |
493 | index_name : name_with_opt_quotes |
4422e22a |
494 | |
0efb6e1b |
495 | data_type : pg_data_type parens_value_list(?) |
4422e22a |
496 | { |
3022f45b |
497 | my $data_type = $item[1]; |
ba1a1626 |
498 | |
0efb6e1b |
499 | # |
500 | # We can deduce some sizes from the data type's name. |
501 | # |
44ffdb73 |
502 | if ( my $size = $item[2][0] ) { |
503 | $data_type->{'size'} = $size; |
504 | } |
4422e22a |
505 | |
3022f45b |
506 | $return = $data_type; |
4422e22a |
507 | } |
508 | |
0efb6e1b |
509 | pg_data_type : |
50840472 |
510 | /(bigint|int8)/i |
3022f45b |
511 | { |
512 | $return = { |
50840472 |
513 | type => 'integer', |
b8ea6076 |
514 | size => 20, |
3022f45b |
515 | }; |
516 | } |
0efb6e1b |
517 | | |
1bbd4a2b |
518 | /(smallint|int2)/i |
3022f45b |
519 | { |
520 | $return = { |
521 | type => 'integer', |
b8ea6076 |
522 | size => 5, |
3022f45b |
523 | }; |
524 | } |
0efb6e1b |
525 | | |
c4c363bb |
526 | /interval/i |
527 | { |
528 | $return = { type => 'interval' }; |
529 | } |
530 | | |
50840472 |
531 | /(integer|int4?)/i # interval must come before this |
3022f45b |
532 | { |
533 | $return = { |
534 | type => 'integer', |
b8ea6076 |
535 | size => 10, |
3022f45b |
536 | }; |
537 | } |
50840472 |
538 | | |
539 | /(real|float4)/i |
540 | { |
541 | $return = { |
542 | type => 'real', |
b8ea6076 |
543 | size => 10, |
50840472 |
544 | }; |
545 | } |
0efb6e1b |
546 | | |
1bbd4a2b |
547 | /(double precision|float8?)/i |
3022f45b |
548 | { |
549 | $return = { |
550 | type => 'float', |
b8ea6076 |
551 | size => 20, |
3022f45b |
552 | }; |
553 | } |
0efb6e1b |
554 | | |
50840472 |
555 | /(bigserial|serial8)/i |
3022f45b |
556 | { |
50840472 |
557 | $return = { |
7eac5e12 |
558 | type => 'integer', |
b8ea6076 |
559 | size => 20, |
7eac5e12 |
560 | is_auto_increment => 1, |
3022f45b |
561 | }; |
562 | } |
0efb6e1b |
563 | | |
1bbd4a2b |
564 | /serial4?/i |
3022f45b |
565 | { |
566 | $return = { |
7eac5e12 |
567 | type => 'integer', |
b8ea6076 |
568 | size => 11, |
7eac5e12 |
569 | is_auto_increment => 1, |
3022f45b |
570 | }; |
571 | } |
0efb6e1b |
572 | | |
1bbd4a2b |
573 | /(bit varying|varbit)/i |
3022f45b |
574 | { |
575 | $return = { type => 'varbit' }; |
576 | } |
0efb6e1b |
577 | | |
1bbd4a2b |
578 | /character varying/i |
3022f45b |
579 | { |
580 | $return = { type => 'varchar' }; |
581 | } |
0efb6e1b |
582 | | |
1bbd4a2b |
583 | /char(acter)?/i |
3022f45b |
584 | { |
585 | $return = { type => 'char' }; |
586 | } |
0efb6e1b |
587 | | |
1bbd4a2b |
588 | /bool(ean)?/i |
3022f45b |
589 | { |
590 | $return = { type => 'boolean' }; |
591 | } |
0efb6e1b |
592 | | |
1bbd4a2b |
593 | /bytea/i |
3022f45b |
594 | { |
82968eb9 |
595 | $return = { type => 'bytea' }; |
3022f45b |
596 | } |
0efb6e1b |
597 | | |
b5a782a0 |
598 | /(timestamptz|timestamp)(?:\(\d\))?( with(?:out)? time zone)?/i |
3022f45b |
599 | { |
b5a782a0 |
600 | $return = { type => 'timestamp' . ($2||'') }; |
3022f45b |
601 | } |
0efb6e1b |
602 | | |
38a6a4f9 |
603 | /text/i |
604 | { |
605 | $return = { |
606 | type => 'text', |
607 | size => 64_000, |
608 | }; |
609 | } |
610 | | |
c4c363bb |
611 | /(bit|box|cidr|circle|date|inet|line|lseg|macaddr|money|numeric|decimal|path|point|polygon|timetz|time|varchar)/i |
3022f45b |
612 | { |
613 | $return = { type => $item[1] }; |
614 | } |
0efb6e1b |
615 | |
4422e22a |
616 | parens_value_list : '(' VALUE(s /,/) ')' |
617 | { $item[2] } |
618 | |
efd0c9ec |
619 | |
620 | parens_word_list : '(' name_with_opt_quotes(s /,/) ')' |
0efb6e1b |
621 | { $item[2] } |
4422e22a |
622 | |
0efb6e1b |
623 | field_size : '(' num_range ')' { $item{'num_range'} } |
4422e22a |
624 | |
0efb6e1b |
625 | num_range : DIGITS ',' DIGITS |
4422e22a |
626 | { $return = $item[1].','.$item[3] } |
627 | | DIGITS |
628 | { $return = $item[1] } |
629 | |
f2f71b8e |
630 | table_constraint : comment(s?) constraint_name(?) table_constraint_type deferrable(?) deferred(?) comment(s?) |
0efb6e1b |
631 | { |
632 | my $desc = $item{'table_constraint_type'}; |
633 | my $type = $desc->{'type'}; |
634 | my $fields = $desc->{'fields'}; |
635 | my $expression = $desc->{'expression'}; |
f2f71b8e |
636 | my @comments = ( @{ $item[1] }, @{ $item[-1] } ); |
0efb6e1b |
637 | |
638 | $return = { |
d4056aa7 |
639 | name => $item[2][0] || '', |
b3384294 |
640 | supertype => 'constraint', |
641 | type => $type, |
0efb6e1b |
642 | fields => $type ne 'check' ? $fields : [], |
643 | expression => $type eq 'check' ? $expression : '', |
f04713db |
644 | deferrable => $item{'deferrable'}, |
0efb6e1b |
645 | deferred => $item{'deferred'}, |
646 | reference_table => $desc->{'reference_table'}, |
647 | reference_fields => $desc->{'reference_fields'}, |
840447a5 |
648 | match_type => $desc->{'match_type'}, |
100684f3 |
649 | on_delete => $desc->{'on_delete'} || $desc->{'on_delete_do'}, |
650 | on_update => $desc->{'on_update'} || $desc->{'on_update_do'}, |
f2f71b8e |
651 | comments => [ @comments ], |
0efb6e1b |
652 | } |
653 | } |
4422e22a |
654 | |
0efb6e1b |
655 | table_constraint_type : /primary key/i '(' name_with_opt_quotes(s /,/) ')' |
656 | { |
657 | $return = { |
658 | type => 'primary_key', |
659 | fields => $item[3], |
660 | } |
661 | } |
662 | | |
663 | /unique/i '(' name_with_opt_quotes(s /,/) ')' |
664 | { |
665 | $return = { |
666 | type => 'unique', |
667 | fields => $item[3], |
668 | } |
669 | } |
670 | | |
b3384294 |
671 | /check/i '(' /[^)]+/ ')' |
0efb6e1b |
672 | { |
673 | $return = { |
674 | type => 'check', |
675 | expression => $item[3], |
676 | } |
677 | } |
678 | | |
330e4686 |
679 | /foreign key/i '(' name_with_opt_quotes(s /,/) ')' /references/i table_id parens_word_list(?) match_type(?) key_action(s?) |
0efb6e1b |
680 | { |
3022f45b |
681 | my ( $on_delete, $on_update ); |
682 | for my $action ( @{ $item[9] || [] } ) { |
683 | $on_delete = $action->{'action'} if $action->{'type'} eq 'delete'; |
684 | $on_update = $action->{'action'} if $action->{'type'} eq 'update'; |
685 | } |
686 | |
0efb6e1b |
687 | $return = { |
b3384294 |
688 | supertype => 'constraint', |
0efb6e1b |
689 | type => 'foreign_key', |
690 | fields => $item[3], |
a20abbda |
691 | reference_table => $item[6]->{'table_name'}, |
0efb6e1b |
692 | reference_fields => $item[7][0], |
693 | match_type => $item[8][0], |
100684f3 |
694 | on_delete => $on_delete || '', |
695 | on_update => $on_update || '', |
0efb6e1b |
696 | } |
697 | } |
698 | |
99f3fab6 |
699 | deferrable : not(?) /deferrable/i |
0efb6e1b |
700 | { |
701 | $return = ( $item[1] =~ /not/i ) ? 0 : 1; |
702 | } |
4422e22a |
703 | |
0efb6e1b |
704 | deferred : /initially/i /(deferred|immediate)/i { $item[2] } |
4422e22a |
705 | |
840447a5 |
706 | match_type : /match/i /partial|full|simple/i { $item[2] } |
0efb6e1b |
707 | |
3022f45b |
708 | key_action : key_delete |
709 | | |
710 | key_update |
0efb6e1b |
711 | |
3022f45b |
712 | key_delete : /on delete/i key_mutation |
713 | { |
8c12c406 |
714 | $return = { |
3022f45b |
715 | type => 'delete', |
716 | action => $item[2], |
717 | }; |
718 | } |
719 | |
720 | key_update : /on update/i key_mutation |
721 | { |
8c12c406 |
722 | $return = { |
3022f45b |
723 | type => 'update', |
724 | action => $item[2], |
725 | }; |
726 | } |
727 | |
728 | key_mutation : /no action/i { $return = 'no_action' } |
729 | | |
730 | /restrict/i { $return = 'restrict' } |
731 | | |
732 | /cascade/i { $return = 'cascade' } |
733 | | |
38a6a4f9 |
734 | /set null/i { $return = 'set null' } |
3022f45b |
735 | | |
38a6a4f9 |
736 | /set default/i { $return = 'set default' } |
0efb6e1b |
737 | |
330e4686 |
738 | alter : alter_table table_id add_column field ';' |
00ef67ea |
739 | { |
740 | my $field_def = $item[4]; |
a20abbda |
741 | $tables{ $item[2]->{'table_name'} }{'fields'}{ $field_def->{'name'} } = { |
00ef67ea |
742 | %$field_def, order => $field_order++ |
743 | }; |
744 | 1; |
745 | } |
746 | |
330e4686 |
747 | alter : alter_table table_id ADD table_constraint ';' |
0012a163 |
748 | { |
a20abbda |
749 | my $table_name = $item[2]->{'table_name'}; |
0012a163 |
750 | my $constraint = $item[4]; |
0012a163 |
751 | push @{ $tables{ $table_name }{'constraints'} }, $constraint; |
00ef67ea |
752 | 1; |
0012a163 |
753 | } |
754 | |
330e4686 |
755 | alter : alter_table table_id drop_column NAME restrict_or_cascade(?) ';' |
00ef67ea |
756 | { |
a20abbda |
757 | $tables{ $item[2]->{'table_name'} }{'fields'}{ $item[4] }{'drop'} = 1; |
00ef67ea |
758 | 1; |
759 | } |
0012a163 |
760 | |
330e4686 |
761 | alter : alter_table table_id alter_column NAME alter_default_val ';' |
00ef67ea |
762 | { |
a20abbda |
763 | $tables{ $item[2]->{'table_name'} }{'fields'}{ $item[4] }{'default'} = |
00ef67ea |
764 | $item[5]->{'value'}; |
765 | 1; |
766 | } |
767 | |
768 | # |
769 | # These will just parse for now but won't affect the structure. - ky |
770 | # |
330e4686 |
771 | alter : alter_table table_id /rename/i /to/i NAME ';' |
00ef67ea |
772 | { 1 } |
773 | |
330e4686 |
774 | alter : alter_table table_id alter_column NAME SET /statistics/i INTEGER ';' |
00ef67ea |
775 | { 1 } |
776 | |
330e4686 |
777 | alter : alter_table table_id alter_column NAME SET /storage/i storage_type ';' |
00ef67ea |
778 | { 1 } |
779 | |
330e4686 |
780 | alter : alter_table table_id rename_column NAME /to/i NAME ';' |
00ef67ea |
781 | { 1 } |
782 | |
330e4686 |
783 | alter : alter_table table_id DROP /constraint/i NAME restrict_or_cascade ';' |
00ef67ea |
784 | { 1 } |
785 | |
330e4686 |
786 | alter : alter_table table_id /owner/i /to/i NAME ';' |
00ef67ea |
787 | { 1 } |
788 | |
6f28e7ac |
789 | alter : alter_sequence NAME /owned/i /by/i column_name ';' |
790 | { 1 } |
791 | |
00ef67ea |
792 | storage_type : /(plain|external|extended|main)/i |
793 | |
330e4686 |
794 | temporary : /temp(orary)?\\b/i |
795 | { |
796 | 1; |
797 | } |
3e98f7d9 |
798 | |
330e4686 |
799 | or_replace : /or replace/i |
3e98f7d9 |
800 | |
00ef67ea |
801 | alter_default_val : SET default_val |
802 | { |
803 | $return = { value => $item[2]->{'value'} } |
804 | } |
805 | | DROP DEFAULT |
806 | { |
807 | $return = { value => undef } |
808 | } |
809 | |
810 | # |
811 | # This is a little tricky to get right, at least WRT to making the |
812 | # tests pass. The problem is that the constraints are stored just as |
813 | # a list (no name access), and the tests expect the constraints in a |
814 | # particular order. I'm going to leave the rule but disable the code |
815 | # for now. - ky |
816 | # |
330e4686 |
817 | alter : alter_table table_id alter_column NAME alter_nullable ';' |
00ef67ea |
818 | { |
a20abbda |
819 | # my $table_name = $item[2]->{'table_name'}; |
00ef67ea |
820 | # my $field_name = $item[4]; |
821 | # my $is_nullable = $item[5]->{'is_nullable'}; |
822 | # |
823 | # $tables{ $table_name }{'fields'}{ $field_name }{'is_nullable'} = |
824 | # $is_nullable; |
825 | # |
826 | # if ( $is_nullable ) { |
827 | # 1; |
828 | # push @{ $tables{ $table_name }{'constraints'} }, { |
829 | # type => 'not_null', |
830 | # fields => [ $field_name ], |
831 | # }; |
832 | # } |
833 | # else { |
834 | # for my $i ( |
835 | # 0 .. $#{ $tables{ $table_name }{'constraints'} || [] } |
836 | # ) { |
837 | # my $c = $tables{ $table_name }{'constraints'}[ $i ] or next; |
838 | # my $fields = join( '', @{ $c->{'fields'} || [] } ) or next; |
839 | # if ( $c->{'type'} eq 'not_null' && $fields eq $field_name ) { |
840 | # delete $tables{ $table_name }{'constraints'}[ $i ]; |
841 | # last; |
842 | # } |
843 | # } |
844 | # } |
845 | |
846 | 1; |
847 | } |
848 | |
849 | alter_nullable : SET not_null |
850 | { |
851 | $return = { is_nullable => 0 } |
852 | } |
853 | | DROP not_null |
854 | { |
855 | $return = { is_nullable => 1 } |
856 | } |
857 | |
858 | not_null : /not/i /null/i |
859 | |
99f3fab6 |
860 | not : /not/i |
861 | |
00ef67ea |
862 | add_column : ADD COLUMN(?) |
863 | |
864 | alter_table : ALTER TABLE ONLY(?) |
865 | |
6f28e7ac |
866 | alter_sequence : ALTER SEQUENCE |
867 | |
00ef67ea |
868 | drop_column : DROP COLUMN(?) |
869 | |
870 | alter_column : ALTER COLUMN(?) |
871 | |
872 | rename_column : /rename/i COLUMN(?) |
873 | |
874 | restrict_or_cascade : /restrict/i | |
875 | /cascade/i |
876 | |
34338cb2 |
877 | # Handle functions that can be called |
878 | select : SELECT select_function ';' |
879 | { 1 } |
880 | |
881 | # Read the setval function but don't do anything with it because this parser |
882 | # isn't handling sequences |
883 | select_function : schema_qualification(?) /setval/i '(' VALUE /,/ VALUE /,/ /(true|false)/i ')' |
884 | { 1 } |
885 | |
886 | # Skipping all COPY commands |
887 | copy : COPY WORD /[^;]+/ ';' { 1 } |
888 | { 1 } |
889 | |
890 | # The "\." allows reading in from STDIN but this isn't needed for schema |
891 | # creation, so it is skipped. |
892 | readin_symbol : '\.' |
893 | {1} |
894 | |
00ef67ea |
895 | # |
896 | # End basically useless stuff. - ky |
897 | # |
0012a163 |
898 | |
211e2e90 |
899 | create_table : CREATE TABLE |
0efb6e1b |
900 | |
211e2e90 |
901 | create_index : CREATE /index/i |
4422e22a |
902 | |
37e74f25 |
903 | default_val : DEFAULT /(\d+|'[^']*'|\w+\(.*\))|\w+/ |
4422e22a |
904 | { |
f04713db |
905 | my $val = defined $item[2] ? $item[2] : ''; |
906 | $val =~ s/^'|'$//g; |
0efb6e1b |
907 | $return = { |
82968eb9 |
908 | supertype => 'constraint', |
909 | type => 'default', |
0efb6e1b |
910 | value => $val, |
911 | } |
4422e22a |
912 | } |
f27085c9 |
913 | | /null/i |
914 | { |
915 | $return = { |
916 | supertype => 'constraint', |
917 | type => 'default', |
918 | value => 'NULL', |
919 | } |
920 | } |
4422e22a |
921 | |
4422e22a |
922 | name_with_opt_paren : NAME parens_value_list(s?) |
0efb6e1b |
923 | { $item[2][0] ? "$item[1]($item[2][0][0])" : $item[1] } |
4422e22a |
924 | |
925 | unique : /unique/i { 1 } |
926 | |
927 | key : /key/i | /index/i |
928 | |
0efb6e1b |
929 | table_option : /inherits/i '(' name_with_opt_quotes(s /,/) ')' |
4422e22a |
930 | { |
0efb6e1b |
931 | $return = { type => 'inherits', table_name => $item[3] } |
932 | } |
933 | | |
934 | /with(out)? oids/i |
935 | { |
936 | $return = { type => $item[1] =~ /out/i ? 'without_oids' : 'with_oids' } |
4422e22a |
937 | } |
938 | |
00ef67ea |
939 | ADD : /add/i |
940 | |
941 | ALTER : /alter/i |
942 | |
211e2e90 |
943 | CREATE : /create/i |
944 | |
00ef67ea |
945 | ONLY : /only/i |
946 | |
947 | DEFAULT : /default/i |
948 | |
949 | DROP : /drop/i |
950 | |
951 | COLUMN : /column/i |
952 | |
0d51cd9e |
953 | TABLE : /table/i |
954 | |
330e4686 |
955 | VIEW : /view/i |
956 | |
34338cb2 |
957 | SCHEMA : /schema/i |
958 | |
0efb6e1b |
959 | SEMICOLON : /\s*;\n?/ |
960 | |
6f28e7ac |
961 | SEQUENCE : /sequence/i |
962 | |
34338cb2 |
963 | SELECT : /select/i |
964 | |
965 | COPY : /copy/i |
966 | |
00ef67ea |
967 | INTEGER : /\d+/ |
968 | |
4422e22a |
969 | WORD : /\w+/ |
970 | |
971 | DIGITS : /\d+/ |
972 | |
973 | COMMA : ',' |
974 | |
00ef67ea |
975 | SET : /set/i |
976 | |
4422e22a |
977 | NAME : "`" /\w+/ "`" |
978 | { $item[2] } |
979 | | /\w+/ |
980 | { $item[1] } |
0012a163 |
981 | | /[\$\w]+/ |
982 | { $item[1] } |
4422e22a |
983 | |
984 | VALUE : /[-+]?\.?\d+(?:[eE]\d+)?/ |
985 | { $item[1] } |
986 | | /'.*?'/ # XXX doesn't handle embedded quotes |
987 | { $item[1] } |
f04713db |
988 | | /null/i |
4422e22a |
989 | { 'NULL' } |
990 | |
991 | !; |
992 | |
993 | # ------------------------------------------------------------------- |
994 | sub parse { |
995 | my ( $translator, $data ) = @_; |
9fa2a755 |
996 | my $parser = Parse::RecDescent->new($GRAMMAR); |
4422e22a |
997 | |
998 | $::RD_TRACE = $translator->trace ? 1 : undef; |
999 | $DEBUG = $translator->debug; |
1000 | |
1001 | unless (defined $parser) { |
1002 | return $translator->error("Error instantiating Parse::RecDescent ". |
1003 | "instance: Bad grammer"); |
1004 | } |
1005 | |
1006 | my $result = $parser->startrule($data); |
1007 | die "Parse failed.\n" unless defined $result; |
1008 | warn Dumper($result) if $DEBUG; |
82968eb9 |
1009 | |
1010 | my $schema = $translator->schema; |
1011 | my @tables = sort { |
330e4686 |
1012 | ( $result->{tables}{ $a }{'order'} || 0 ) <=> ( $result->{tables}{ $b }{'order'} || 0 ) |
1013 | } keys %{ $result->{tables} }; |
82968eb9 |
1014 | |
1015 | for my $table_name ( @tables ) { |
330e4686 |
1016 | my $tdata = $result->{tables}{ $table_name }; |
82968eb9 |
1017 | my $table = $schema->add_table( |
a20abbda |
1018 | #schema => $tdata->{'schema_name'}, |
1019 | name => $tdata->{'table_name'}, |
d7fcc1d6 |
1020 | ) or die "Couldn't create table '$table_name': " . $schema->error; |
82968eb9 |
1021 | |
3e98f7d9 |
1022 | $table->extra(temporary => 1) if $tdata->{'temporary'}; |
1023 | |
a82fa2cb |
1024 | $table->comments( $tdata->{'comments'} ); |
1025 | |
82968eb9 |
1026 | my @fields = sort { |
429f639c |
1027 | $tdata->{'fields'}{ $a }{'order'} |
82968eb9 |
1028 | <=> |
429f639c |
1029 | $tdata->{'fields'}{ $b }{'order'} |
82968eb9 |
1030 | } keys %{ $tdata->{'fields'} }; |
1031 | |
1032 | for my $fname ( @fields ) { |
1033 | my $fdata = $tdata->{'fields'}{ $fname }; |
00ef67ea |
1034 | next if $fdata->{'drop'}; |
82968eb9 |
1035 | my $field = $table->add_field( |
1036 | name => $fdata->{'name'}, |
1037 | data_type => $fdata->{'data_type'}, |
1038 | size => $fdata->{'size'}, |
1039 | default_value => $fdata->{'default'}, |
7eac5e12 |
1040 | is_auto_increment => $fdata->{'is_auto_increment'}, |
00ef67ea |
1041 | is_nullable => $fdata->{'is_nullable'}, |
a82fa2cb |
1042 | comments => $fdata->{'comments'}, |
82968eb9 |
1043 | ) or die $table->error; |
1044 | |
1045 | $table->primary_key( $field->name ) if $fdata->{'is_primary_key'}; |
1046 | |
1047 | for my $cdata ( @{ $fdata->{'constraints'} } ) { |
1048 | next unless $cdata->{'type'} eq 'foreign_key'; |
1049 | $cdata->{'fields'} ||= [ $field->name ]; |
1050 | push @{ $tdata->{'constraints'} }, $cdata; |
1051 | } |
1052 | } |
1053 | |
1054 | for my $idata ( @{ $tdata->{'indices'} || [] } ) { |
1055 | my $index = $table->add_index( |
1056 | name => $idata->{'name'}, |
1057 | type => uc $idata->{'type'}, |
1058 | fields => $idata->{'fields'}, |
3406fd5b |
1059 | ) or die $table->error . ' ' . $table->name; |
82968eb9 |
1060 | } |
1061 | |
1062 | for my $cdata ( @{ $tdata->{'constraints'} || [] } ) { |
1063 | my $constraint = $table->add_constraint( |
1064 | name => $cdata->{'name'}, |
1065 | type => $cdata->{'type'}, |
1066 | fields => $cdata->{'fields'}, |
1067 | reference_table => $cdata->{'reference_table'}, |
1068 | reference_fields => $cdata->{'reference_fields'}, |
1069 | match_type => $cdata->{'match_type'} || '', |
100684f3 |
1070 | on_delete => $cdata->{'on_delete'} || $cdata->{'on_delete_do'}, |
1071 | on_update => $cdata->{'on_update'} || $cdata->{'on_update_do'}, |
b3384294 |
1072 | expression => $cdata->{'expression'}, |
1073 | ) or die "Can't add constraint of type '" . |
1074 | $cdata->{'type'} . "' to table '" . $table->name . |
1075 | "': " . $table->error; |
82968eb9 |
1076 | } |
1077 | } |
1078 | |
330e4686 |
1079 | for my $vinfo (@{$result->{views}}) { |
1080 | my $sql = $vinfo->{sql}; |
1081 | $sql =~ s/\A\s+|\s+\z//g; |
1082 | my $view = $schema->add_view ( |
1083 | name => $vinfo->{view_name}, |
1084 | sql => $sql, |
1085 | fields => $vinfo->{fields}, |
1086 | ); |
1087 | |
1088 | $view->extra ( temporary => 1 ) if $vinfo->{is_temporary}; |
1089 | } |
1090 | |
f62bd16c |
1091 | return 1; |
4422e22a |
1092 | } |
1093 | |
1094 | 1; |
1095 | |
82968eb9 |
1096 | # ------------------------------------------------------------------- |
1097 | # Rescue the drowning and tie your shoestrings. |
1098 | # Henry David Thoreau |
1099 | # ------------------------------------------------------------------- |
4422e22a |
1100 | |
1101 | =pod |
1102 | |
0efb6e1b |
1103 | =head1 AUTHORS |
4422e22a |
1104 | |
11ad2df9 |
1105 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>, |
b8ea6076 |
1106 | Allen Day E<lt>allenday@ucla.eduE<gt>. |
4422e22a |
1107 | |
1108 | =head1 SEE ALSO |
1109 | |
1110 | perl(1), Parse::RecDescent. |
1111 | |
1112 | =cut |