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1 | package SQL::Translator::Parser::PostgreSQL; |
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2 | |
3 | # ------------------------------------------------------------------- |
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4 | # $Id: PostgreSQL.pm,v 1.27 2003-08-17 00:46:23 rossta 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 | |
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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: 1.27 $ =~ /(\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 | { our ( %tables, $table_order ) } |
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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 |
147 | | comment |
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148 | | alter |
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149 | | grant |
150 | | revoke |
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151 | | drop |
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152 | | insert |
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153 | | connect |
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154 | | update |
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155 | | set |
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156 | | <error> |
157 | |
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158 | connect : /^\s*\\\connect.*\n/ |
159 | |
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160 | set : /set/i /[^;]*/ ';' |
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161 | |
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162 | revoke : /revoke/i WORD(s /,/) /on/i TABLE(?) table_name /from/i name_with_opt_quotes(s /,/) ';' |
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163 | { |
164 | my $table_name = $item{'table_name'}; |
165 | push @{ $tables{ $table_name }{'permissions'} }, { |
166 | type => 'revoke', |
167 | actions => $item[2], |
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168 | users => $item[7], |
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169 | } |
170 | } |
171 | |
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172 | grant : /grant/i WORD(s /,/) /on/i TABLE(?) table_name /to/i name_with_opt_quotes(s /,/) ';' |
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173 | { |
174 | my $table_name = $item{'table_name'}; |
175 | push @{ $tables{ $table_name }{'permissions'} }, { |
176 | type => 'grant', |
177 | actions => $item[2], |
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178 | users => $item[7], |
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179 | } |
180 | } |
181 | |
182 | drop : /drop/i /[^;]*/ ';' |
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183 | |
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184 | insert : /insert/i /[^;]*/ ';' |
185 | |
186 | update : /update/i /[^;]*/ ';' |
187 | |
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188 | # |
189 | # Create table. |
190 | # |
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191 | create : create_table table_name '(' create_definition(s /,/) ')' table_option(s?) ';' |
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192 | { |
193 | my $table_name = $item{'table_name'}; |
194 | $tables{ $table_name }{'order'} = ++$table_order; |
195 | $tables{ $table_name }{'table_name'} = $table_name; |
196 | |
197 | my $i = 1; |
198 | my @constraints; |
199 | for my $definition ( @{ $item[4] } ) { |
200 | if ( $definition->{'type'} eq 'field' ) { |
201 | my $field_name = $definition->{'name'}; |
202 | $tables{ $table_name }{'fields'}{ $field_name } = |
203 | { %$definition, order => $i }; |
204 | $i++; |
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205 | |
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206 | for my $constraint ( @{ $definition->{'constraints'} || [] } ) { |
207 | $constraint->{'fields'} = [ $field_name ]; |
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208 | push @{ $tables{ $table_name }{'constraints'} }, |
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209 | $constraint; |
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210 | } |
211 | } |
212 | elsif ( $definition->{'type'} eq 'constraint' ) { |
213 | $definition->{'type'} = $definition->{'constraint_type'}; |
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214 | # group FKs at the field level |
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215 | # if ( $definition->{'type'} eq 'foreign_key' ) { |
216 | # for my $fld ( @{ $definition->{'fields'} || [] } ) { |
217 | # push @{ |
218 | # $tables{$table_name}{'fields'}{$fld}{'constraints'} |
219 | # }, $definition; |
220 | # } |
221 | # } |
222 | # else { |
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223 | push @{ $tables{ $table_name }{'constraints'} }, |
224 | $definition; |
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225 | # } |
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226 | } |
227 | else { |
228 | push @{ $tables{ $table_name }{'indices'} }, $definition; |
229 | } |
230 | } |
231 | |
232 | for my $option ( @{ $item[6] } ) { |
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233 | $tables{ $table_name }{'table_options(s?)'}{ $option->{'type'} } = |
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234 | $option; |
235 | } |
236 | |
237 | 1; |
238 | } |
239 | |
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240 | # |
241 | # Create index. |
242 | # |
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243 | create : /create/i unique(?) /(index|key)/i index_name /on/i table_name using_method(?) '(' field_name(s /,/) ')' where_predicate(?) ';' |
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244 | { |
245 | push @{ $tables{ $item{'table_name'} }{'indices'} }, |
246 | { |
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247 | name => $item{'index_name'}, |
248 | type => $item{'unique'}[0] ? 'unique' : 'normal', |
249 | fields => $item[9], |
250 | method => $item{'using_method'}[0], |
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251 | } |
252 | ; |
253 | } |
254 | |
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255 | # |
256 | # Create anything else (e.g., domain, function, etc.) |
257 | # |
258 | create : /create/i WORD /[^;]+/ ';' |
259 | |
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260 | using_method : /using/i WORD { $item[2] } |
261 | |
262 | where_predicate : /where/i /[^;]+/ |
263 | |
264 | create_definition : field |
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265 | | table_constraint |
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266 | | <error> |
267 | |
268 | comment : /^\s*(?:#|-{2}).*\n/ |
269 | |
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270 | field : comment(s?) field_name data_type field_meta(s?) comment(s?) |
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271 | { |
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272 | my ( $default, @constraints, $is_pk ); |
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273 | my $null = 1; |
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274 | for my $meta ( @{ $item[4] } ) { |
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275 | if ( $meta->{'type'} eq 'default' ) { |
276 | $default = $meta; |
277 | next; |
278 | } |
279 | elsif ( $meta->{'type'} eq 'not_null' ) { |
280 | $null = 0; |
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281 | # next; |
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282 | } |
283 | elsif ( $meta->{'type'} eq 'primary_key' ) { |
284 | $is_pk = 1; |
285 | } |
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286 | |
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287 | push @constraints, $meta if $meta->{'supertype'} eq 'constraint'; |
288 | } |
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289 | |
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290 | my @comments = ( @{ $item[1] }, @{ $item[5] } ); |
291 | |
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292 | $return = { |
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293 | type => 'field', |
294 | name => $item{'field_name'}, |
295 | data_type => $item{'data_type'}{'type'}, |
296 | size => $item{'data_type'}{'size'}, |
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297 | null => $null, |
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298 | default => $default->{'value'}, |
299 | constraints => [ @constraints ], |
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300 | comments => [ @comments ], |
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301 | is_primary_key => $is_pk || 0, |
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302 | } |
303 | } |
304 | | <error> |
305 | |
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306 | field_meta : default_val |
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307 | | column_constraint |
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308 | |
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309 | column_constraint : constraint_name(?) column_constraint_type deferrable(?) deferred(?) |
310 | { |
311 | my $desc = $item{'column_constraint_type'}; |
312 | my $type = $desc->{'type'}; |
313 | my $fields = $desc->{'fields'} || []; |
314 | my $expression = $desc->{'expression'} || ''; |
315 | |
316 | $return = { |
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317 | supertype => 'constraint', |
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318 | name => $item{'constraint_name'}[0] || '', |
319 | type => $type, |
320 | expression => $type eq 'check' ? $expression : '', |
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321 | deferrable => $item{'deferrable'}, |
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322 | deferred => $item{'deferred'}, |
323 | reference_table => $desc->{'reference_table'}, |
324 | reference_fields => $desc->{'reference_fields'}, |
325 | match_type => $desc->{'match_type'}, |
326 | on_delete_do => $desc->{'on_delete_do'}, |
327 | on_update_do => $desc->{'on_update_do'}, |
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328 | } |
329 | } |
330 | |
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331 | constraint_name : /constraint/i name_with_opt_quotes { $item[2] } |
332 | |
333 | column_constraint_type : /not null/i { $return = { type => 'not_null' } } |
334 | | |
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335 | /null/i |
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336 | { $return = { type => 'null' } } |
337 | | |
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338 | /unique/i |
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339 | { $return = { type => 'unique' } } |
340 | | |
341 | /primary key/i |
342 | { $return = { type => 'primary_key' } } |
343 | | |
344 | /check/i '(' /[^)]+/ ')' |
345 | { $return = { type => 'check', expression => $item[2] } } |
346 | | |
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347 | /references/i table_name parens_word_list(?) match_type(?) key_action(s?) |
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348 | { |
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349 | my ( $on_delete, $on_update ); |
350 | for my $action ( @{ $item[5] || [] } ) { |
351 | $on_delete = $action->{'action'} if $action->{'type'} eq 'delete'; |
352 | $on_update = $action->{'action'} if $action->{'type'} eq 'update'; |
353 | } |
354 | |
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355 | $return = { |
356 | type => 'foreign_key', |
357 | reference_table => $item[2], |
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358 | reference_fields => $item[3][0], |
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359 | match_type => $item[4][0], |
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360 | on_delete_do => $on_delete, |
361 | on_update_do => $on_update, |
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362 | } |
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363 | } |
364 | |
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365 | table_name : name_with_opt_quotes |
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366 | |
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367 | field_name : name_with_opt_quotes |
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368 | |
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369 | name_with_opt_quotes : double_quote(?) NAME double_quote(?) { $item[2] } |
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370 | |
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371 | double_quote: /"/ |
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372 | |
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373 | index_name : WORD |
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374 | |
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375 | data_type : pg_data_type parens_value_list(?) |
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376 | { |
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377 | my $data_type = $item[1]; |
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378 | |
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379 | # |
380 | # We can deduce some sizes from the data type's name. |
381 | # |
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382 | $data_type->{'size'} ||= $item[2][0]; |
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383 | |
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384 | $return = $data_type; |
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385 | } |
386 | |
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387 | pg_data_type : |
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388 | /(bigint|int8)/i |
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389 | { |
390 | $return = { |
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391 | type => 'integer', |
392 | size => [8], |
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393 | }; |
394 | } |
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395 | | |
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396 | /(smallint|int2)/i |
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397 | { |
398 | $return = { |
399 | type => 'integer', |
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400 | size => [2], |
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401 | }; |
402 | } |
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403 | | |
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404 | /(integer|int4?)/i # interval must come before this |
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405 | { |
406 | $return = { |
407 | type => 'integer', |
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408 | size => [4], |
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409 | }; |
410 | } |
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411 | | |
412 | /(real|float4)/i |
413 | { |
414 | $return = { |
415 | type => 'real', |
416 | size => [4], |
417 | }; |
418 | } |
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419 | | |
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420 | /(double precision|float8?)/i |
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421 | { |
422 | $return = { |
423 | type => 'float', |
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424 | size => [8], |
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425 | }; |
426 | } |
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427 | | |
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428 | /(bigserial|serial8)/i |
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429 | { |
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430 | $return = { |
431 | type => 'integer', |
432 | size => [8], |
433 | auto_increment => 1, |
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434 | }; |
435 | } |
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436 | | |
1bbd4a2b |
437 | /serial4?/i |
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438 | { |
439 | $return = { |
440 | type => 'integer', |
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441 | size => [4], |
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442 | auto_increment => 1, |
443 | }; |
444 | } |
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445 | | |
1bbd4a2b |
446 | /(bit varying|varbit)/i |
3022f45b |
447 | { |
448 | $return = { type => 'varbit' }; |
449 | } |
0efb6e1b |
450 | | |
1bbd4a2b |
451 | /character varying/i |
3022f45b |
452 | { |
453 | $return = { type => 'varchar' }; |
454 | } |
0efb6e1b |
455 | | |
1bbd4a2b |
456 | /char(acter)?/i |
3022f45b |
457 | { |
458 | $return = { type => 'char' }; |
459 | } |
0efb6e1b |
460 | | |
1bbd4a2b |
461 | /bool(ean)?/i |
3022f45b |
462 | { |
463 | $return = { type => 'boolean' }; |
464 | } |
0efb6e1b |
465 | | |
1bbd4a2b |
466 | /bytea/i |
3022f45b |
467 | { |
82968eb9 |
468 | $return = { type => 'bytea' }; |
3022f45b |
469 | } |
0efb6e1b |
470 | | |
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471 | /(timestamptz|timestamp)/i |
3022f45b |
472 | { |
473 | $return = { type => 'timestamp' }; |
474 | } |
0efb6e1b |
475 | | |
50840472 |
476 | /(bit|box|cidr|circle|date|inet|interval|line|lseg|macaddr|money|numeric|decimal|path|point|polygon|text|timetz|time|varchar)/i |
3022f45b |
477 | { |
478 | $return = { type => $item[1] }; |
479 | } |
0efb6e1b |
480 | |
4422e22a |
481 | parens_value_list : '(' VALUE(s /,/) ')' |
482 | { $item[2] } |
483 | |
0efb6e1b |
484 | parens_word_list : '(' WORD(s /,/) ')' |
485 | { $item[2] } |
4422e22a |
486 | |
0efb6e1b |
487 | field_size : '(' num_range ')' { $item{'num_range'} } |
4422e22a |
488 | |
0efb6e1b |
489 | num_range : DIGITS ',' DIGITS |
4422e22a |
490 | { $return = $item[1].','.$item[3] } |
491 | | DIGITS |
492 | { $return = $item[1] } |
493 | |
f2f71b8e |
494 | table_constraint : comment(s?) constraint_name(?) table_constraint_type deferrable(?) deferred(?) comment(s?) |
0efb6e1b |
495 | { |
496 | my $desc = $item{'table_constraint_type'}; |
497 | my $type = $desc->{'type'}; |
498 | my $fields = $desc->{'fields'}; |
499 | my $expression = $desc->{'expression'}; |
f2f71b8e |
500 | my @comments = ( @{ $item[1] }, @{ $item[-1] } ); |
0efb6e1b |
501 | |
502 | $return = { |
503 | name => $item{'constraint_name'}[0] || '', |
504 | type => 'constraint', |
505 | constraint_type => $type, |
506 | fields => $type ne 'check' ? $fields : [], |
507 | expression => $type eq 'check' ? $expression : '', |
f04713db |
508 | deferrable => $item{'deferrable'}, |
0efb6e1b |
509 | deferred => $item{'deferred'}, |
510 | reference_table => $desc->{'reference_table'}, |
511 | reference_fields => $desc->{'reference_fields'}, |
512 | match_type => $desc->{'match_type'}[0], |
0012a163 |
513 | on_delete_do => $desc->{'on_delete_do'}, |
514 | on_update_do => $desc->{'on_update_do'}, |
f2f71b8e |
515 | comments => [ @comments ], |
0efb6e1b |
516 | } |
517 | } |
4422e22a |
518 | |
0efb6e1b |
519 | table_constraint_type : /primary key/i '(' name_with_opt_quotes(s /,/) ')' |
520 | { |
521 | $return = { |
522 | type => 'primary_key', |
523 | fields => $item[3], |
524 | } |
525 | } |
526 | | |
527 | /unique/i '(' name_with_opt_quotes(s /,/) ')' |
528 | { |
529 | $return = { |
530 | type => 'unique', |
531 | fields => $item[3], |
532 | } |
533 | } |
534 | | |
f04713db |
535 | /check/i '(' /(.+)/ ')' |
0efb6e1b |
536 | { |
537 | $return = { |
538 | type => 'check', |
539 | expression => $item[3], |
540 | } |
541 | } |
542 | | |
3022f45b |
543 | /foreign key/i '(' name_with_opt_quotes(s /,/) ')' /references/i table_name parens_word_list(?) match_type(?) key_action(s?) |
0efb6e1b |
544 | { |
3022f45b |
545 | my ( $on_delete, $on_update ); |
546 | for my $action ( @{ $item[9] || [] } ) { |
547 | $on_delete = $action->{'action'} if $action->{'type'} eq 'delete'; |
548 | $on_update = $action->{'action'} if $action->{'type'} eq 'update'; |
549 | } |
550 | |
0efb6e1b |
551 | $return = { |
552 | type => 'foreign_key', |
553 | fields => $item[3], |
554 | reference_table => $item[6], |
555 | reference_fields => $item[7][0], |
556 | match_type => $item[8][0], |
3022f45b |
557 | on_delete_do => $on_delete || '', |
558 | on_update_do => $on_update || '', |
0efb6e1b |
559 | } |
560 | } |
561 | |
562 | deferrable : /not/i /deferrable/i |
563 | { |
564 | $return = ( $item[1] =~ /not/i ) ? 0 : 1; |
565 | } |
4422e22a |
566 | |
0efb6e1b |
567 | deferred : /initially/i /(deferred|immediate)/i { $item[2] } |
4422e22a |
568 | |
0efb6e1b |
569 | match_type : /match full/i { 'match_full' } |
570 | | |
571 | /match partial/i { 'match_partial' } |
572 | |
3022f45b |
573 | key_action : key_delete |
574 | | |
575 | key_update |
0efb6e1b |
576 | |
3022f45b |
577 | key_delete : /on delete/i key_mutation |
578 | { |
579 | $return => { |
580 | type => 'delete', |
581 | action => $item[2], |
582 | }; |
583 | } |
584 | |
585 | key_update : /on update/i key_mutation |
586 | { |
587 | $return => { |
588 | type => 'update', |
589 | action => $item[2], |
590 | }; |
591 | } |
592 | |
593 | key_mutation : /no action/i { $return = 'no_action' } |
594 | | |
595 | /restrict/i { $return = 'restrict' } |
596 | | |
597 | /cascade/i { $return = 'cascade' } |
598 | | |
599 | /set null/i { $return = 'set_null' } |
600 | | |
601 | /set default/i { $return = 'set_default' } |
0efb6e1b |
602 | |
0012a163 |
603 | alter : alter_table table_name /add/i table_constraint ';' |
604 | { |
605 | my $table_name = $item[2]; |
606 | my $constraint = $item[4]; |
607 | $constraint->{'type'} = $constraint->{'constraint_type'}; |
608 | push @{ $tables{ $table_name }{'constraints'} }, $constraint; |
609 | } |
610 | |
611 | alter_table : /alter/i /table/i only(?) |
612 | |
613 | only : /only/i |
614 | |
0d51cd9e |
615 | create_table : /create/i TABLE |
0efb6e1b |
616 | |
617 | create_index : /create/i /index/i |
4422e22a |
618 | |
d7fcc1d6 |
619 | default_val : /default/i /(\d+|'[^']*'|\w+\(.*?\))|\w+/ |
4422e22a |
620 | { |
f04713db |
621 | my $val = defined $item[2] ? $item[2] : ''; |
622 | $val =~ s/^'|'$//g; |
0efb6e1b |
623 | $return = { |
82968eb9 |
624 | supertype => 'constraint', |
625 | type => 'default', |
0efb6e1b |
626 | value => $val, |
627 | } |
4422e22a |
628 | } |
f27085c9 |
629 | | /null/i |
630 | { |
631 | $return = { |
632 | supertype => 'constraint', |
633 | type => 'default', |
634 | value => 'NULL', |
635 | } |
636 | } |
4422e22a |
637 | |
4422e22a |
638 | name_with_opt_paren : NAME parens_value_list(s?) |
0efb6e1b |
639 | { $item[2][0] ? "$item[1]($item[2][0][0])" : $item[1] } |
4422e22a |
640 | |
641 | unique : /unique/i { 1 } |
642 | |
643 | key : /key/i | /index/i |
644 | |
0efb6e1b |
645 | table_option : /inherits/i '(' name_with_opt_quotes(s /,/) ')' |
4422e22a |
646 | { |
0efb6e1b |
647 | $return = { type => 'inherits', table_name => $item[3] } |
648 | } |
649 | | |
650 | /with(out)? oids/i |
651 | { |
652 | $return = { type => $item[1] =~ /out/i ? 'without_oids' : 'with_oids' } |
4422e22a |
653 | } |
654 | |
0d51cd9e |
655 | TABLE : /table/i |
656 | |
0efb6e1b |
657 | SEMICOLON : /\s*;\n?/ |
658 | |
4422e22a |
659 | WORD : /\w+/ |
660 | |
661 | DIGITS : /\d+/ |
662 | |
663 | COMMA : ',' |
664 | |
665 | NAME : "`" /\w+/ "`" |
666 | { $item[2] } |
667 | | /\w+/ |
668 | { $item[1] } |
0012a163 |
669 | | /[\$\w]+/ |
670 | { $item[1] } |
4422e22a |
671 | |
672 | VALUE : /[-+]?\.?\d+(?:[eE]\d+)?/ |
673 | { $item[1] } |
674 | | /'.*?'/ # XXX doesn't handle embedded quotes |
675 | { $item[1] } |
f04713db |
676 | | /null/i |
4422e22a |
677 | { 'NULL' } |
678 | |
679 | !; |
680 | |
681 | # ------------------------------------------------------------------- |
682 | sub parse { |
683 | my ( $translator, $data ) = @_; |
684 | $parser ||= Parse::RecDescent->new($GRAMMAR); |
685 | |
686 | $::RD_TRACE = $translator->trace ? 1 : undef; |
687 | $DEBUG = $translator->debug; |
688 | |
689 | unless (defined $parser) { |
690 | return $translator->error("Error instantiating Parse::RecDescent ". |
691 | "instance: Bad grammer"); |
692 | } |
693 | |
694 | my $result = $parser->startrule($data); |
695 | die "Parse failed.\n" unless defined $result; |
696 | warn Dumper($result) if $DEBUG; |
82968eb9 |
697 | |
698 | my $schema = $translator->schema; |
699 | my @tables = sort { |
700 | $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'} |
701 | } keys %{ $result }; |
702 | |
703 | for my $table_name ( @tables ) { |
704 | my $tdata = $result->{ $table_name }; |
705 | my $table = $schema->add_table( |
706 | name => $tdata->{'table_name'}, |
d7fcc1d6 |
707 | ) or die "Couldn't create table '$table_name': " . $schema->error; |
82968eb9 |
708 | |
709 | my @fields = sort { |
710 | $tdata->{'fields'}->{$a}->{'order'} |
711 | <=> |
712 | $tdata->{'fields'}->{$b}->{'order'} |
713 | } keys %{ $tdata->{'fields'} }; |
714 | |
715 | for my $fname ( @fields ) { |
716 | my $fdata = $tdata->{'fields'}{ $fname }; |
717 | my $field = $table->add_field( |
718 | name => $fdata->{'name'}, |
719 | data_type => $fdata->{'data_type'}, |
720 | size => $fdata->{'size'}, |
721 | default_value => $fdata->{'default'}, |
722 | is_auto_increment => $fdata->{'is_auto_inc'}, |
723 | is_nullable => $fdata->{'null'}, |
724 | ) or die $table->error; |
725 | |
726 | $table->primary_key( $field->name ) if $fdata->{'is_primary_key'}; |
727 | |
728 | for my $cdata ( @{ $fdata->{'constraints'} } ) { |
729 | next unless $cdata->{'type'} eq 'foreign_key'; |
730 | $cdata->{'fields'} ||= [ $field->name ]; |
731 | push @{ $tdata->{'constraints'} }, $cdata; |
732 | } |
733 | } |
734 | |
735 | for my $idata ( @{ $tdata->{'indices'} || [] } ) { |
736 | my $index = $table->add_index( |
737 | name => $idata->{'name'}, |
738 | type => uc $idata->{'type'}, |
739 | fields => $idata->{'fields'}, |
740 | ) or die $table->error; |
741 | } |
742 | |
743 | for my $cdata ( @{ $tdata->{'constraints'} || [] } ) { |
744 | my $constraint = $table->add_constraint( |
745 | name => $cdata->{'name'}, |
746 | type => $cdata->{'type'}, |
747 | fields => $cdata->{'fields'}, |
748 | reference_table => $cdata->{'reference_table'}, |
749 | reference_fields => $cdata->{'reference_fields'}, |
750 | match_type => $cdata->{'match_type'} || '', |
751 | on_delete => $cdata->{'on_delete_do'}, |
752 | on_update => $cdata->{'on_update_do'}, |
753 | ) or die $table->error; |
754 | } |
755 | } |
756 | |
f62bd16c |
757 | return 1; |
4422e22a |
758 | } |
759 | |
760 | 1; |
761 | |
82968eb9 |
762 | # ------------------------------------------------------------------- |
763 | # Rescue the drowning and tie your shoestrings. |
764 | # Henry David Thoreau |
765 | # ------------------------------------------------------------------- |
4422e22a |
766 | |
767 | =pod |
768 | |
0efb6e1b |
769 | =head1 AUTHORS |
4422e22a |
770 | |
771 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>, |
0a7fc605 |
772 | Allen Day <allenday@ucla.edu>. |
4422e22a |
773 | |
774 | =head1 SEE ALSO |
775 | |
776 | perl(1), Parse::RecDescent. |
777 | |
778 | =cut |