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84012a55 |
1 | package SQL::Translator::Parser::PostgreSQL; |
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2 | |
3 | # ------------------------------------------------------------------- |
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4 | # $Id: PostgreSQL.pm,v 1.32 2003-11-17 19:09:33 allenday Exp $ |
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5 | # ------------------------------------------------------------------- |
6 | # Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org>, |
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7 | # Allen Day <allenday@users.sourceforge.net>, |
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8 | # darren chamberlain <darren@cpan.org>, |
9 | # Chris Mungall <cjm@fruitfly.org> |
10 | # |
11 | # This program is free software; you can redistribute it and/or |
12 | # modify it under the terms of the GNU General Public License as |
13 | # published by the Free Software Foundation; version 2. |
14 | # |
15 | # This program is distributed in the hope that it will be useful, but |
16 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
18 | # General Public License for more details. |
19 | # |
20 | # You should have received a copy of the GNU General Public License |
21 | # along with this program; if not, write to the Free Software |
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22 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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23 | # 02111-1307 USA |
24 | # ------------------------------------------------------------------- |
25 | |
26 | =head1 NAME |
27 | |
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28 | SQL::Translator::Parser::PostgreSQL - parser for PostgreSQL |
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29 | |
30 | =head1 SYNOPSIS |
31 | |
32 | use SQL::Translator; |
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33 | use SQL::Translator::Parser::PostgreSQL; |
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34 | |
35 | my $translator = SQL::Translator->new; |
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36 | $translator->parser("SQL::Translator::Parser::PostgreSQL"); |
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37 | |
38 | =head1 DESCRIPTION |
39 | |
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40 | The grammar was started from the MySQL parsers. Here is the description |
41 | from PostgreSQL: |
42 | |
43 | Table: |
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44 | (http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=sql-createtable.html) |
45 | |
46 | CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name ( |
47 | { column_name data_type [ DEFAULT default_expr ] |
48 | [ column_constraint [, ... ] ] |
49 | | table_constraint } [, ... ] |
50 | ) |
51 | [ INHERITS ( parent_table [, ... ] ) ] |
52 | [ WITH OIDS | WITHOUT OIDS ] |
53 | |
54 | where column_constraint is: |
55 | |
56 | [ CONSTRAINT constraint_name ] |
57 | { NOT NULL | NULL | UNIQUE | PRIMARY KEY | |
58 | CHECK (expression) | |
59 | REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ] |
60 | [ ON DELETE action ] [ ON UPDATE action ] } |
61 | [ DEFERRABLE | NOT DEFERRABLE ] |
62 | [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
63 | |
64 | and table_constraint is: |
65 | |
66 | [ CONSTRAINT constraint_name ] |
67 | { UNIQUE ( column_name [, ... ] ) | |
68 | PRIMARY KEY ( column_name [, ... ] ) | |
69 | CHECK ( expression ) | |
70 | FOREIGN KEY ( column_name [, ... ] ) |
71 | REFERENCES reftable [ ( refcolumn [, ... ] ) ] |
72 | [ MATCH FULL | MATCH PARTIAL ] |
73 | [ ON DELETE action ] [ ON UPDATE action ] } |
74 | [ DEFERRABLE | NOT DEFERRABLE ] |
75 | [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
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76 | |
77 | Index: |
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78 | (http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=sql-createindex.html) |
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79 | |
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80 | CREATE [ UNIQUE ] INDEX index_name ON table |
81 | [ USING acc_method ] ( column [ ops_name ] [, ...] ) |
82 | [ WHERE predicate ] |
83 | CREATE [ UNIQUE ] INDEX index_name ON table |
84 | [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] ) |
85 | [ WHERE predicate ] |
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86 | |
0012a163 |
87 | Alter table: |
88 | |
89 | ALTER TABLE [ ONLY ] table [ * ] |
90 | ADD [ COLUMN ] column type [ column_constraint [ ... ] ] |
91 | ALTER TABLE [ ONLY ] table [ * ] |
92 | ALTER [ COLUMN ] column { SET DEFAULT value | DROP DEFAULT } |
93 | ALTER TABLE [ ONLY ] table [ * ] |
94 | ALTER [ COLUMN ] column SET STATISTICS integer |
95 | ALTER TABLE [ ONLY ] table [ * ] |
96 | RENAME [ COLUMN ] column TO newcolumn |
97 | ALTER TABLE table |
98 | RENAME TO new_table |
99 | ALTER TABLE table |
100 | ADD table_constraint_definition |
101 | ALTER TABLE [ ONLY ] table |
102 | DROP CONSTRAINT constraint { RESTRICT | CASCADE } |
103 | ALTER TABLE table |
104 | OWNER TO new_owner |
105 | |
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106 | View table: |
107 | |
108 | CREATE [ OR REPLACE ] VIEW view [ ( column name list ) ] AS SELECT query |
109 | |
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110 | =cut |
111 | |
112 | use strict; |
113 | use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ]; |
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114 | $VERSION = sprintf "%d.%02d", q$Revision: 1.32 $ =~ /(\d+)\.(\d+)/; |
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115 | $DEBUG = 0 unless defined $DEBUG; |
116 | |
117 | use Data::Dumper; |
118 | use Parse::RecDescent; |
119 | use Exporter; |
120 | use base qw(Exporter); |
121 | |
122 | @EXPORT_OK = qw(parse); |
123 | |
124 | # Enable warnings within the Parse::RecDescent module. |
125 | $::RD_ERRORS = 1; # Make sure the parser dies when it encounters an error |
126 | $::RD_WARN = 1; # Enable warnings. This will warn on unused rules &c. |
127 | $::RD_HINT = 1; # Give out hints to help fix problems. |
128 | |
129 | my $parser; # should we do this? There's no programmic way to |
130 | # change the grammar, so I think this is safe. |
131 | |
132 | $GRAMMAR = q! |
133 | |
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134 | { my ( %tables, $table_order, @table_comments) } |
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135 | |
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136 | # |
137 | # The "eofile" rule makes the parser fail if any "statement" rule |
138 | # fails. Otherwise, the first successful match by a "statement" |
139 | # won't cause the failure needed to know that the parse, as a whole, |
140 | # failed. -ky |
141 | # |
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142 | startrule : statement(s) eofile { \%tables } |
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143 | |
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144 | eofile : /^\Z/ |
145 | |
146 | statement : create |
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147 | | comment_on_table |
148 | | comment_on_column |
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149 | | comment |
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150 | | alter |
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151 | | grant |
152 | | revoke |
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153 | | drop |
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154 | | insert |
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155 | | connect |
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156 | | update |
0012a163 |
157 | | set |
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158 | | <error> |
159 | |
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160 | connect : /^\s*\\\connect.*\n/ |
161 | |
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162 | set : /set/i /[^;]*/ ';' |
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163 | |
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164 | revoke : /revoke/i WORD(s /,/) /on/i TABLE(?) table_name /from/i name_with_opt_quotes(s /,/) ';' |
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165 | { |
166 | my $table_name = $item{'table_name'}; |
167 | push @{ $tables{ $table_name }{'permissions'} }, { |
168 | type => 'revoke', |
169 | actions => $item[2], |
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170 | users => $item[7], |
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171 | } |
172 | } |
173 | |
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174 | grant : /grant/i WORD(s /,/) /on/i TABLE(?) table_name /to/i name_with_opt_quotes(s /,/) ';' |
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175 | { |
176 | my $table_name = $item{'table_name'}; |
177 | push @{ $tables{ $table_name }{'permissions'} }, { |
178 | type => 'grant', |
179 | actions => $item[2], |
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180 | users => $item[7], |
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181 | } |
182 | } |
183 | |
184 | drop : /drop/i /[^;]*/ ';' |
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185 | |
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186 | insert : /insert/i /[^;]*/ ';' |
187 | |
188 | update : /update/i /[^;]*/ ';' |
189 | |
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190 | # |
191 | # Create table. |
192 | # |
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193 | create : create_table table_name '(' create_definition(s /,/) ')' table_option(s?) ';' |
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194 | { |
195 | my $table_name = $item{'table_name'}; |
196 | $tables{ $table_name }{'order'} = ++$table_order; |
197 | $tables{ $table_name }{'table_name'} = $table_name; |
198 | |
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199 | if ( @table_comments ) { |
200 | $tables{ $table_name }{'comments'} = [ @table_comments ]; |
201 | @table_comments = (); |
202 | } |
203 | |
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204 | my $i = 1; |
205 | my @constraints; |
206 | for my $definition ( @{ $item[4] } ) { |
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207 | if ( $definition->{'supertype'} eq 'field' ) { |
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208 | my $field_name = $definition->{'name'}; |
209 | $tables{ $table_name }{'fields'}{ $field_name } = |
210 | { %$definition, order => $i }; |
211 | $i++; |
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212 | |
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213 | for my $constraint ( @{ $definition->{'constraints'} || [] } ) { |
214 | $constraint->{'fields'} = [ $field_name ]; |
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215 | push @{ $tables{ $table_name }{'constraints'} }, |
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216 | $constraint; |
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217 | } |
218 | } |
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219 | elsif ( $definition->{'supertype'} eq 'constraint' ) { |
220 | push @{ $tables{ $table_name }{'constraints'} }, $definition; |
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221 | } |
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222 | elsif ( $definition->{'supertype'} eq 'index' ) { |
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223 | push @{ $tables{ $table_name }{'indices'} }, $definition; |
224 | } |
225 | } |
226 | |
227 | for my $option ( @{ $item[6] } ) { |
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228 | $tables{ $table_name }{'table_options(s?)'}{ $option->{'type'} } = |
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229 | $option; |
230 | } |
231 | |
232 | 1; |
233 | } |
234 | |
235 | create : /create/i unique(?) /(index|key)/i index_name /on/i table_name using_method(?) '(' field_name(s /,/) ')' where_predicate(?) ';' |
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236 | { |
237 | push @{ $tables{ $item{'table_name'} }{'indices'} }, |
238 | { |
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239 | name => $item{'index_name'}, |
240 | supertype => $item{'unique'}[0] ? 'constraint' : 'index', |
241 | type => $item{'unique'}[0] ? 'unique' : 'normal', |
242 | fields => $item[9], |
243 | method => $item{'using_method'}[0], |
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244 | } |
245 | ; |
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246 | |
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247 | } |
248 | |
0012a163 |
249 | # |
250 | # Create anything else (e.g., domain, function, etc.) |
251 | # |
252 | create : /create/i WORD /[^;]+/ ';' |
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253 | { @table_comments = (); } |
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254 | |
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255 | using_method : /using/i WORD { $item[2] } |
256 | |
257 | where_predicate : /where/i /[^;]+/ |
258 | |
259 | create_definition : field |
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260 | | table_constraint |
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261 | | <error> |
262 | |
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263 | table_comment : comment |
264 | { |
265 | my $comment = $item[1]; |
266 | $return = $comment; |
267 | push @table_comments, $comment; |
268 | } |
269 | |
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270 | comment : /^\s*(?:#|-{2}).*\n/ |
271 | |
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272 | comment_on_table : /comment/i /on/i /table/i table_name /is/i comment_phrase ';' |
273 | { |
274 | push @{ $tables{ $item{'table_name'} }{'comments'} }, $item{'comment_phrase'}; |
275 | } |
276 | |
277 | comment_on_column : /comment/i /on/i /column/i column_name /is/i comment_phrase ';' |
278 | { |
279 | my $table_name = $item[4]->{'table'}; |
280 | my $field_name = $item[4]->{'field'}; |
281 | push @{ $tables{ $table_name }{'fields'}{ $field_name }{'comments'} }, |
282 | $item{'comment_phrase'}; |
283 | } |
284 | |
285 | column_name : NAME '.' NAME |
286 | { $return = { table => $item[1], field => $item[3] } } |
287 | |
288 | comment_phrase : /'.*?'|NULL/ |
289 | { |
290 | my $val = $item[1]; |
291 | $val =~ s/^'|'$//g; |
292 | $return = $val; |
293 | } |
294 | |
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295 | field : comment(s?) field_name data_type field_meta(s?) comment(s?) |
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296 | { |
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297 | my ( $default, @constraints, $is_pk ); |
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298 | my $null = 1; |
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299 | for my $meta ( @{ $item[4] } ) { |
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300 | if ( $meta->{'type'} eq 'default' ) { |
301 | $default = $meta; |
302 | next; |
303 | } |
304 | elsif ( $meta->{'type'} eq 'not_null' ) { |
305 | $null = 0; |
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306 | # next; |
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307 | } |
308 | elsif ( $meta->{'type'} eq 'primary_key' ) { |
309 | $is_pk = 1; |
310 | } |
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311 | |
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312 | push @constraints, $meta if $meta->{'supertype'} eq 'constraint'; |
313 | } |
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314 | |
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315 | my @comments = ( @{ $item[1] }, @{ $item[5] } ); |
316 | |
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317 | $return = { |
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318 | supertype => 'field', |
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319 | name => $item{'field_name'}, |
320 | data_type => $item{'data_type'}{'type'}, |
321 | size => $item{'data_type'}{'size'}, |
322 | null => $null, |
323 | default => $default->{'value'}, |
324 | constraints => [ @constraints ], |
325 | comments => [ @comments ], |
326 | is_primary_key => $is_pk || 0, |
327 | is_auto_increment => $item{'data_type'}{'is_auto_increment'}, |
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328 | } |
329 | } |
330 | | <error> |
331 | |
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332 | field_meta : default_val |
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333 | | column_constraint |
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334 | |
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335 | column_constraint : constraint_name(?) column_constraint_type deferrable(?) deferred(?) |
336 | { |
337 | my $desc = $item{'column_constraint_type'}; |
338 | my $type = $desc->{'type'}; |
339 | my $fields = $desc->{'fields'} || []; |
340 | my $expression = $desc->{'expression'} || ''; |
341 | |
342 | $return = { |
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343 | supertype => 'constraint', |
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344 | name => $item{'constraint_name'}[0] || '', |
345 | type => $type, |
346 | expression => $type eq 'check' ? $expression : '', |
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347 | deferrable => $item{'deferrable'}, |
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348 | deferred => $item{'deferred'}, |
349 | reference_table => $desc->{'reference_table'}, |
350 | reference_fields => $desc->{'reference_fields'}, |
351 | match_type => $desc->{'match_type'}, |
352 | on_delete_do => $desc->{'on_delete_do'}, |
353 | on_update_do => $desc->{'on_update_do'}, |
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354 | } |
355 | } |
356 | |
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357 | constraint_name : /constraint/i name_with_opt_quotes { $item[2] } |
358 | |
359 | column_constraint_type : /not null/i { $return = { type => 'not_null' } } |
360 | | |
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361 | /null/i |
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362 | { $return = { type => 'null' } } |
363 | | |
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364 | /unique/i |
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365 | { $return = { type => 'unique' } } |
366 | | |
367 | /primary key/i |
368 | { $return = { type => 'primary_key' } } |
369 | | |
370 | /check/i '(' /[^)]+/ ')' |
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371 | { $return = { type => 'check', expression => $item[3] } } |
0efb6e1b |
372 | | |
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373 | /references/i table_name parens_word_list(?) match_type(?) key_action(s?) |
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374 | { |
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375 | my ( $on_delete, $on_update ); |
376 | for my $action ( @{ $item[5] || [] } ) { |
377 | $on_delete = $action->{'action'} if $action->{'type'} eq 'delete'; |
378 | $on_update = $action->{'action'} if $action->{'type'} eq 'update'; |
379 | } |
380 | |
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381 | $return = { |
382 | type => 'foreign_key', |
383 | reference_table => $item[2], |
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384 | reference_fields => $item[3][0], |
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385 | match_type => $item[4][0], |
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386 | on_delete_do => $on_delete, |
387 | on_update_do => $on_update, |
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388 | } |
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389 | } |
390 | |
0efb6e1b |
391 | table_name : name_with_opt_quotes |
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392 | |
0efb6e1b |
393 | field_name : name_with_opt_quotes |
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394 | |
0012a163 |
395 | name_with_opt_quotes : double_quote(?) NAME double_quote(?) { $item[2] } |
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396 | |
0efb6e1b |
397 | double_quote: /"/ |
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398 | |
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399 | index_name : WORD |
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400 | |
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401 | data_type : pg_data_type parens_value_list(?) |
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402 | { |
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403 | my $data_type = $item[1]; |
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404 | |
0efb6e1b |
405 | # |
406 | # We can deduce some sizes from the data type's name. |
407 | # |
82968eb9 |
408 | $data_type->{'size'} ||= $item[2][0]; |
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409 | |
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410 | $return = $data_type; |
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411 | } |
412 | |
0efb6e1b |
413 | pg_data_type : |
50840472 |
414 | /(bigint|int8)/i |
3022f45b |
415 | { |
416 | $return = { |
50840472 |
417 | type => 'integer', |
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418 | size => 20, |
3022f45b |
419 | }; |
420 | } |
0efb6e1b |
421 | | |
1bbd4a2b |
422 | /(smallint|int2)/i |
3022f45b |
423 | { |
424 | $return = { |
425 | type => 'integer', |
b8ea6076 |
426 | size => 5, |
3022f45b |
427 | }; |
428 | } |
0efb6e1b |
429 | | |
50840472 |
430 | /(integer|int4?)/i # interval must come before this |
3022f45b |
431 | { |
432 | $return = { |
433 | type => 'integer', |
b8ea6076 |
434 | size => 10, |
3022f45b |
435 | }; |
436 | } |
50840472 |
437 | | |
438 | /(real|float4)/i |
439 | { |
440 | $return = { |
441 | type => 'real', |
b8ea6076 |
442 | size => 10, |
50840472 |
443 | }; |
444 | } |
0efb6e1b |
445 | | |
1bbd4a2b |
446 | /(double precision|float8?)/i |
3022f45b |
447 | { |
448 | $return = { |
449 | type => 'float', |
b8ea6076 |
450 | size => 20, |
3022f45b |
451 | }; |
452 | } |
0efb6e1b |
453 | | |
50840472 |
454 | /(bigserial|serial8)/i |
3022f45b |
455 | { |
50840472 |
456 | $return = { |
7eac5e12 |
457 | type => 'integer', |
b8ea6076 |
458 | size => 20, |
7eac5e12 |
459 | is_auto_increment => 1, |
3022f45b |
460 | }; |
461 | } |
0efb6e1b |
462 | | |
1bbd4a2b |
463 | /serial4?/i |
3022f45b |
464 | { |
465 | $return = { |
7eac5e12 |
466 | type => 'integer', |
b8ea6076 |
467 | size => 11, |
7eac5e12 |
468 | is_auto_increment => 1, |
3022f45b |
469 | }; |
470 | } |
0efb6e1b |
471 | | |
1bbd4a2b |
472 | /(bit varying|varbit)/i |
3022f45b |
473 | { |
474 | $return = { type => 'varbit' }; |
475 | } |
0efb6e1b |
476 | | |
1bbd4a2b |
477 | /character varying/i |
3022f45b |
478 | { |
479 | $return = { type => 'varchar' }; |
480 | } |
0efb6e1b |
481 | | |
1bbd4a2b |
482 | /char(acter)?/i |
3022f45b |
483 | { |
484 | $return = { type => 'char' }; |
485 | } |
0efb6e1b |
486 | | |
1bbd4a2b |
487 | /bool(ean)?/i |
3022f45b |
488 | { |
489 | $return = { type => 'boolean' }; |
490 | } |
0efb6e1b |
491 | | |
1bbd4a2b |
492 | /bytea/i |
3022f45b |
493 | { |
82968eb9 |
494 | $return = { type => 'bytea' }; |
3022f45b |
495 | } |
0efb6e1b |
496 | | |
50840472 |
497 | /(timestamptz|timestamp)/i |
3022f45b |
498 | { |
499 | $return = { type => 'timestamp' }; |
500 | } |
0efb6e1b |
501 | | |
38a6a4f9 |
502 | /text/i |
503 | { |
504 | $return = { |
505 | type => 'text', |
506 | size => 64_000, |
507 | }; |
508 | } |
509 | | |
510 | /(bit|box|cidr|circle|date|inet|interval|line|lseg|macaddr|money|numeric|decimal|path|point|polygon|timetz|time|varchar)/i |
3022f45b |
511 | { |
512 | $return = { type => $item[1] }; |
513 | } |
0efb6e1b |
514 | |
4422e22a |
515 | parens_value_list : '(' VALUE(s /,/) ')' |
516 | { $item[2] } |
517 | |
0efb6e1b |
518 | parens_word_list : '(' WORD(s /,/) ')' |
519 | { $item[2] } |
4422e22a |
520 | |
0efb6e1b |
521 | field_size : '(' num_range ')' { $item{'num_range'} } |
4422e22a |
522 | |
0efb6e1b |
523 | num_range : DIGITS ',' DIGITS |
4422e22a |
524 | { $return = $item[1].','.$item[3] } |
525 | | DIGITS |
526 | { $return = $item[1] } |
527 | |
f2f71b8e |
528 | table_constraint : comment(s?) constraint_name(?) table_constraint_type deferrable(?) deferred(?) comment(s?) |
0efb6e1b |
529 | { |
530 | my $desc = $item{'table_constraint_type'}; |
531 | my $type = $desc->{'type'}; |
532 | my $fields = $desc->{'fields'}; |
533 | my $expression = $desc->{'expression'}; |
f2f71b8e |
534 | my @comments = ( @{ $item[1] }, @{ $item[-1] } ); |
0efb6e1b |
535 | |
536 | $return = { |
537 | name => $item{'constraint_name'}[0] || '', |
b3384294 |
538 | supertype => 'constraint', |
539 | type => $type, |
0efb6e1b |
540 | fields => $type ne 'check' ? $fields : [], |
541 | expression => $type eq 'check' ? $expression : '', |
f04713db |
542 | deferrable => $item{'deferrable'}, |
0efb6e1b |
543 | deferred => $item{'deferred'}, |
544 | reference_table => $desc->{'reference_table'}, |
545 | reference_fields => $desc->{'reference_fields'}, |
546 | match_type => $desc->{'match_type'}[0], |
0012a163 |
547 | on_delete_do => $desc->{'on_delete_do'}, |
548 | on_update_do => $desc->{'on_update_do'}, |
f2f71b8e |
549 | comments => [ @comments ], |
0efb6e1b |
550 | } |
551 | } |
4422e22a |
552 | |
0efb6e1b |
553 | table_constraint_type : /primary key/i '(' name_with_opt_quotes(s /,/) ')' |
554 | { |
555 | $return = { |
556 | type => 'primary_key', |
557 | fields => $item[3], |
558 | } |
559 | } |
560 | | |
561 | /unique/i '(' name_with_opt_quotes(s /,/) ')' |
562 | { |
563 | $return = { |
564 | type => 'unique', |
565 | fields => $item[3], |
566 | } |
567 | } |
568 | | |
b3384294 |
569 | /check/i '(' /[^)]+/ ')' |
0efb6e1b |
570 | { |
571 | $return = { |
572 | type => 'check', |
573 | expression => $item[3], |
574 | } |
575 | } |
576 | | |
3022f45b |
577 | /foreign key/i '(' name_with_opt_quotes(s /,/) ')' /references/i table_name parens_word_list(?) match_type(?) key_action(s?) |
0efb6e1b |
578 | { |
3022f45b |
579 | my ( $on_delete, $on_update ); |
580 | for my $action ( @{ $item[9] || [] } ) { |
581 | $on_delete = $action->{'action'} if $action->{'type'} eq 'delete'; |
582 | $on_update = $action->{'action'} if $action->{'type'} eq 'update'; |
583 | } |
584 | |
0efb6e1b |
585 | $return = { |
b3384294 |
586 | supertype => 'constraint', |
0efb6e1b |
587 | type => 'foreign_key', |
588 | fields => $item[3], |
589 | reference_table => $item[6], |
590 | reference_fields => $item[7][0], |
591 | match_type => $item[8][0], |
3022f45b |
592 | on_delete_do => $on_delete || '', |
593 | on_update_do => $on_update || '', |
0efb6e1b |
594 | } |
595 | } |
596 | |
597 | deferrable : /not/i /deferrable/i |
598 | { |
599 | $return = ( $item[1] =~ /not/i ) ? 0 : 1; |
600 | } |
4422e22a |
601 | |
0efb6e1b |
602 | deferred : /initially/i /(deferred|immediate)/i { $item[2] } |
4422e22a |
603 | |
0efb6e1b |
604 | match_type : /match full/i { 'match_full' } |
605 | | |
606 | /match partial/i { 'match_partial' } |
607 | |
3022f45b |
608 | key_action : key_delete |
609 | | |
610 | key_update |
0efb6e1b |
611 | |
3022f45b |
612 | key_delete : /on delete/i key_mutation |
613 | { |
614 | $return => { |
615 | type => 'delete', |
616 | action => $item[2], |
617 | }; |
618 | } |
619 | |
620 | key_update : /on update/i key_mutation |
621 | { |
622 | $return => { |
623 | type => 'update', |
624 | action => $item[2], |
625 | }; |
626 | } |
627 | |
628 | key_mutation : /no action/i { $return = 'no_action' } |
629 | | |
630 | /restrict/i { $return = 'restrict' } |
631 | | |
632 | /cascade/i { $return = 'cascade' } |
633 | | |
38a6a4f9 |
634 | /set null/i { $return = 'set null' } |
3022f45b |
635 | | |
38a6a4f9 |
636 | /set default/i { $return = 'set default' } |
0efb6e1b |
637 | |
0012a163 |
638 | alter : alter_table table_name /add/i table_constraint ';' |
639 | { |
640 | my $table_name = $item[2]; |
641 | my $constraint = $item[4]; |
0012a163 |
642 | push @{ $tables{ $table_name }{'constraints'} }, $constraint; |
643 | } |
644 | |
645 | alter_table : /alter/i /table/i only(?) |
646 | |
647 | only : /only/i |
648 | |
0d51cd9e |
649 | create_table : /create/i TABLE |
0efb6e1b |
650 | |
651 | create_index : /create/i /index/i |
4422e22a |
652 | |
d7fcc1d6 |
653 | default_val : /default/i /(\d+|'[^']*'|\w+\(.*?\))|\w+/ |
4422e22a |
654 | { |
f04713db |
655 | my $val = defined $item[2] ? $item[2] : ''; |
656 | $val =~ s/^'|'$//g; |
0efb6e1b |
657 | $return = { |
82968eb9 |
658 | supertype => 'constraint', |
659 | type => 'default', |
0efb6e1b |
660 | value => $val, |
661 | } |
4422e22a |
662 | } |
f27085c9 |
663 | | /null/i |
664 | { |
665 | $return = { |
666 | supertype => 'constraint', |
667 | type => 'default', |
668 | value => 'NULL', |
669 | } |
670 | } |
4422e22a |
671 | |
4422e22a |
672 | name_with_opt_paren : NAME parens_value_list(s?) |
0efb6e1b |
673 | { $item[2][0] ? "$item[1]($item[2][0][0])" : $item[1] } |
4422e22a |
674 | |
675 | unique : /unique/i { 1 } |
676 | |
677 | key : /key/i | /index/i |
678 | |
0efb6e1b |
679 | table_option : /inherits/i '(' name_with_opt_quotes(s /,/) ')' |
4422e22a |
680 | { |
0efb6e1b |
681 | $return = { type => 'inherits', table_name => $item[3] } |
682 | } |
683 | | |
684 | /with(out)? oids/i |
685 | { |
686 | $return = { type => $item[1] =~ /out/i ? 'without_oids' : 'with_oids' } |
4422e22a |
687 | } |
688 | |
0d51cd9e |
689 | TABLE : /table/i |
690 | |
0efb6e1b |
691 | SEMICOLON : /\s*;\n?/ |
692 | |
4422e22a |
693 | WORD : /\w+/ |
694 | |
695 | DIGITS : /\d+/ |
696 | |
697 | COMMA : ',' |
698 | |
699 | NAME : "`" /\w+/ "`" |
700 | { $item[2] } |
701 | | /\w+/ |
702 | { $item[1] } |
0012a163 |
703 | | /[\$\w]+/ |
704 | { $item[1] } |
4422e22a |
705 | |
706 | VALUE : /[-+]?\.?\d+(?:[eE]\d+)?/ |
707 | { $item[1] } |
708 | | /'.*?'/ # XXX doesn't handle embedded quotes |
709 | { $item[1] } |
f04713db |
710 | | /null/i |
4422e22a |
711 | { 'NULL' } |
712 | |
713 | !; |
714 | |
715 | # ------------------------------------------------------------------- |
716 | sub parse { |
717 | my ( $translator, $data ) = @_; |
718 | $parser ||= Parse::RecDescent->new($GRAMMAR); |
719 | |
720 | $::RD_TRACE = $translator->trace ? 1 : undef; |
721 | $DEBUG = $translator->debug; |
722 | |
723 | unless (defined $parser) { |
724 | return $translator->error("Error instantiating Parse::RecDescent ". |
725 | "instance: Bad grammer"); |
726 | } |
727 | |
728 | my $result = $parser->startrule($data); |
729 | die "Parse failed.\n" unless defined $result; |
730 | warn Dumper($result) if $DEBUG; |
82968eb9 |
731 | |
732 | my $schema = $translator->schema; |
733 | my @tables = sort { |
734 | $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'} |
735 | } keys %{ $result }; |
736 | |
737 | for my $table_name ( @tables ) { |
738 | my $tdata = $result->{ $table_name }; |
739 | my $table = $schema->add_table( |
740 | name => $tdata->{'table_name'}, |
d7fcc1d6 |
741 | ) or die "Couldn't create table '$table_name': " . $schema->error; |
82968eb9 |
742 | |
743 | my @fields = sort { |
b3384294 |
744 | $tdata->{'fields'}->{ $a }->{'order'} |
82968eb9 |
745 | <=> |
b3384294 |
746 | $tdata->{'fields'}->{ $b }->{'order'} |
82968eb9 |
747 | } keys %{ $tdata->{'fields'} }; |
748 | |
749 | for my $fname ( @fields ) { |
750 | my $fdata = $tdata->{'fields'}{ $fname }; |
751 | my $field = $table->add_field( |
752 | name => $fdata->{'name'}, |
753 | data_type => $fdata->{'data_type'}, |
754 | size => $fdata->{'size'}, |
755 | default_value => $fdata->{'default'}, |
7eac5e12 |
756 | is_auto_increment => $fdata->{'is_auto_increment'}, |
82968eb9 |
757 | is_nullable => $fdata->{'null'}, |
758 | ) or die $table->error; |
759 | |
760 | $table->primary_key( $field->name ) if $fdata->{'is_primary_key'}; |
761 | |
762 | for my $cdata ( @{ $fdata->{'constraints'} } ) { |
763 | next unless $cdata->{'type'} eq 'foreign_key'; |
764 | $cdata->{'fields'} ||= [ $field->name ]; |
765 | push @{ $tdata->{'constraints'} }, $cdata; |
766 | } |
767 | } |
768 | |
769 | for my $idata ( @{ $tdata->{'indices'} || [] } ) { |
770 | my $index = $table->add_index( |
771 | name => $idata->{'name'}, |
772 | type => uc $idata->{'type'}, |
773 | fields => $idata->{'fields'}, |
774 | ) or die $table->error; |
775 | } |
776 | |
777 | for my $cdata ( @{ $tdata->{'constraints'} || [] } ) { |
778 | my $constraint = $table->add_constraint( |
779 | name => $cdata->{'name'}, |
780 | type => $cdata->{'type'}, |
781 | fields => $cdata->{'fields'}, |
782 | reference_table => $cdata->{'reference_table'}, |
783 | reference_fields => $cdata->{'reference_fields'}, |
784 | match_type => $cdata->{'match_type'} || '', |
785 | on_delete => $cdata->{'on_delete_do'}, |
786 | on_update => $cdata->{'on_update_do'}, |
b3384294 |
787 | expression => $cdata->{'expression'}, |
788 | ) or die "Can't add constraint of type '" . |
789 | $cdata->{'type'} . "' to table '" . $table->name . |
790 | "': " . $table->error; |
82968eb9 |
791 | } |
792 | } |
793 | |
f62bd16c |
794 | return 1; |
4422e22a |
795 | } |
796 | |
797 | 1; |
798 | |
82968eb9 |
799 | # ------------------------------------------------------------------- |
800 | # Rescue the drowning and tie your shoestrings. |
801 | # Henry David Thoreau |
802 | # ------------------------------------------------------------------- |
4422e22a |
803 | |
804 | =pod |
805 | |
0efb6e1b |
806 | =head1 AUTHORS |
4422e22a |
807 | |
808 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>, |
b8ea6076 |
809 | Allen Day E<lt>allenday@ucla.eduE<gt>. |
4422e22a |
810 | |
811 | =head1 SEE ALSO |
812 | |
813 | perl(1), Parse::RecDescent. |
814 | |
815 | =cut |