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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 1.34 2003-12-10 23:09:19 kycl4rk 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: 1.34 $ =~ /(\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, $field_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 |
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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 @constraints; |
205 | for my $definition ( @{ $item[4] } ) { |
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206 | if ( $definition->{'supertype'} eq 'field' ) { |
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207 | my $field_name = $definition->{'name'}; |
208 | $tables{ $table_name }{'fields'}{ $field_name } = |
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209 | { %$definition, order => $field_order++ }; |
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210 | |
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211 | for my $constraint ( @{ $definition->{'constraints'} || [] } ) { |
212 | $constraint->{'fields'} = [ $field_name ]; |
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213 | push @{ $tables{ $table_name }{'constraints'} }, |
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214 | $constraint; |
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215 | } |
216 | } |
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217 | elsif ( $definition->{'supertype'} eq 'constraint' ) { |
218 | push @{ $tables{ $table_name }{'constraints'} }, $definition; |
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219 | } |
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220 | elsif ( $definition->{'supertype'} eq 'index' ) { |
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221 | push @{ $tables{ $table_name }{'indices'} }, $definition; |
222 | } |
223 | } |
224 | |
225 | for my $option ( @{ $item[6] } ) { |
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226 | $tables{ $table_name }{'table_options(s?)'}{ $option->{'type'} } = |
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227 | $option; |
228 | } |
229 | |
230 | 1; |
231 | } |
232 | |
233 | create : /create/i unique(?) /(index|key)/i index_name /on/i table_name using_method(?) '(' field_name(s /,/) ')' where_predicate(?) ';' |
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234 | { |
235 | push @{ $tables{ $item{'table_name'} }{'indices'} }, |
236 | { |
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237 | name => $item{'index_name'}, |
238 | supertype => $item{'unique'}[0] ? 'constraint' : 'index', |
239 | type => $item{'unique'}[0] ? 'unique' : 'normal', |
240 | fields => $item[9], |
241 | method => $item{'using_method'}[0], |
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242 | } |
243 | ; |
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244 | |
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245 | } |
246 | |
0012a163 |
247 | # |
248 | # Create anything else (e.g., domain, function, etc.) |
249 | # |
250 | create : /create/i WORD /[^;]+/ ';' |
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251 | { @table_comments = (); } |
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252 | |
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253 | using_method : /using/i WORD { $item[2] } |
254 | |
255 | where_predicate : /where/i /[^;]+/ |
256 | |
257 | create_definition : field |
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258 | | table_constraint |
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259 | | <error> |
260 | |
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261 | table_comment : comment |
262 | { |
263 | my $comment = $item[1]; |
264 | $return = $comment; |
265 | push @table_comments, $comment; |
266 | } |
267 | |
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268 | comment : /^\s*(?:#|-{2}).*\n/ |
269 | |
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270 | comment_on_table : /comment/i /on/i /table/i table_name /is/i comment_phrase ';' |
271 | { |
272 | push @{ $tables{ $item{'table_name'} }{'comments'} }, $item{'comment_phrase'}; |
273 | } |
274 | |
275 | comment_on_column : /comment/i /on/i /column/i column_name /is/i comment_phrase ';' |
276 | { |
277 | my $table_name = $item[4]->{'table'}; |
278 | my $field_name = $item[4]->{'field'}; |
279 | push @{ $tables{ $table_name }{'fields'}{ $field_name }{'comments'} }, |
280 | $item{'comment_phrase'}; |
281 | } |
282 | |
283 | column_name : NAME '.' NAME |
284 | { $return = { table => $item[1], field => $item[3] } } |
285 | |
286 | comment_phrase : /'.*?'|NULL/ |
287 | { |
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288 | my $val = $item[1] || ''; |
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289 | $val =~ s/^'|'$//g; |
290 | $return = $val; |
291 | } |
292 | |
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293 | field : comment(s?) field_name data_type field_meta(s?) comment(s?) |
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294 | { |
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295 | my ( $default, @constraints, $is_pk ); |
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296 | my $is_nullable = 1; |
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297 | for my $meta ( @{ $item[4] } ) { |
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298 | if ( $meta->{'type'} eq 'default' ) { |
299 | $default = $meta; |
300 | next; |
301 | } |
302 | elsif ( $meta->{'type'} eq 'not_null' ) { |
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303 | $is_nullable = 0; |
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304 | } |
305 | elsif ( $meta->{'type'} eq 'primary_key' ) { |
306 | $is_pk = 1; |
307 | } |
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308 | |
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309 | push @constraints, $meta if $meta->{'supertype'} eq 'constraint'; |
310 | } |
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311 | |
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312 | my @comments = ( @{ $item[1] }, @{ $item[5] } ); |
313 | |
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314 | $return = { |
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315 | supertype => 'field', |
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316 | name => $item{'field_name'}, |
317 | data_type => $item{'data_type'}{'type'}, |
318 | size => $item{'data_type'}{'size'}, |
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319 | is_nullable => $is_nullable, |
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320 | default => $default->{'value'}, |
321 | constraints => [ @constraints ], |
322 | comments => [ @comments ], |
323 | is_primary_key => $is_pk || 0, |
324 | is_auto_increment => $item{'data_type'}{'is_auto_increment'}, |
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325 | } |
326 | } |
327 | | <error> |
328 | |
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329 | field_meta : default_val |
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330 | | column_constraint |
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331 | |
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332 | column_constraint : constraint_name(?) column_constraint_type deferrable(?) deferred(?) |
333 | { |
334 | my $desc = $item{'column_constraint_type'}; |
335 | my $type = $desc->{'type'}; |
336 | my $fields = $desc->{'fields'} || []; |
337 | my $expression = $desc->{'expression'} || ''; |
338 | |
339 | $return = { |
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340 | supertype => 'constraint', |
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341 | name => $item{'constraint_name'}[0] || '', |
342 | type => $type, |
343 | expression => $type eq 'check' ? $expression : '', |
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344 | deferrable => $item{'deferrable'}, |
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345 | deferred => $item{'deferred'}, |
346 | reference_table => $desc->{'reference_table'}, |
347 | reference_fields => $desc->{'reference_fields'}, |
348 | match_type => $desc->{'match_type'}, |
349 | on_delete_do => $desc->{'on_delete_do'}, |
350 | on_update_do => $desc->{'on_update_do'}, |
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351 | } |
352 | } |
353 | |
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354 | constraint_name : /constraint/i name_with_opt_quotes { $item[2] } |
355 | |
356 | column_constraint_type : /not null/i { $return = { type => 'not_null' } } |
357 | | |
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358 | /null/i |
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359 | { $return = { type => 'null' } } |
360 | | |
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361 | /unique/i |
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362 | { $return = { type => 'unique' } } |
363 | | |
364 | /primary key/i |
365 | { $return = { type => 'primary_key' } } |
366 | | |
367 | /check/i '(' /[^)]+/ ')' |
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368 | { $return = { type => 'check', expression => $item[3] } } |
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369 | | |
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370 | /references/i table_name parens_word_list(?) match_type(?) key_action(s?) |
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371 | { |
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372 | my ( $on_delete, $on_update ); |
373 | for my $action ( @{ $item[5] || [] } ) { |
374 | $on_delete = $action->{'action'} if $action->{'type'} eq 'delete'; |
375 | $on_update = $action->{'action'} if $action->{'type'} eq 'update'; |
376 | } |
377 | |
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378 | $return = { |
379 | type => 'foreign_key', |
380 | reference_table => $item[2], |
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381 | reference_fields => $item[3][0], |
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382 | match_type => $item[4][0], |
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383 | on_delete_do => $on_delete, |
384 | on_update_do => $on_update, |
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385 | } |
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386 | } |
387 | |
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388 | table_name : name_with_opt_quotes |
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389 | |
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390 | field_name : name_with_opt_quotes |
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391 | |
0012a163 |
392 | name_with_opt_quotes : double_quote(?) NAME double_quote(?) { $item[2] } |
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393 | |
0efb6e1b |
394 | double_quote: /"/ |
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395 | |
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396 | index_name : WORD |
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397 | |
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398 | data_type : pg_data_type parens_value_list(?) |
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399 | { |
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400 | my $data_type = $item[1]; |
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401 | |
0efb6e1b |
402 | # |
403 | # We can deduce some sizes from the data type's name. |
404 | # |
82968eb9 |
405 | $data_type->{'size'} ||= $item[2][0]; |
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406 | |
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407 | $return = $data_type; |
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408 | } |
409 | |
0efb6e1b |
410 | pg_data_type : |
50840472 |
411 | /(bigint|int8)/i |
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412 | { |
413 | $return = { |
50840472 |
414 | type => 'integer', |
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415 | size => 20, |
3022f45b |
416 | }; |
417 | } |
0efb6e1b |
418 | | |
1bbd4a2b |
419 | /(smallint|int2)/i |
3022f45b |
420 | { |
421 | $return = { |
422 | type => 'integer', |
b8ea6076 |
423 | size => 5, |
3022f45b |
424 | }; |
425 | } |
0efb6e1b |
426 | | |
50840472 |
427 | /(integer|int4?)/i # interval must come before this |
3022f45b |
428 | { |
429 | $return = { |
430 | type => 'integer', |
b8ea6076 |
431 | size => 10, |
3022f45b |
432 | }; |
433 | } |
50840472 |
434 | | |
435 | /(real|float4)/i |
436 | { |
437 | $return = { |
438 | type => 'real', |
b8ea6076 |
439 | size => 10, |
50840472 |
440 | }; |
441 | } |
0efb6e1b |
442 | | |
1bbd4a2b |
443 | /(double precision|float8?)/i |
3022f45b |
444 | { |
445 | $return = { |
446 | type => 'float', |
b8ea6076 |
447 | size => 20, |
3022f45b |
448 | }; |
449 | } |
0efb6e1b |
450 | | |
50840472 |
451 | /(bigserial|serial8)/i |
3022f45b |
452 | { |
50840472 |
453 | $return = { |
7eac5e12 |
454 | type => 'integer', |
b8ea6076 |
455 | size => 20, |
7eac5e12 |
456 | is_auto_increment => 1, |
3022f45b |
457 | }; |
458 | } |
0efb6e1b |
459 | | |
1bbd4a2b |
460 | /serial4?/i |
3022f45b |
461 | { |
462 | $return = { |
7eac5e12 |
463 | type => 'integer', |
b8ea6076 |
464 | size => 11, |
7eac5e12 |
465 | is_auto_increment => 1, |
3022f45b |
466 | }; |
467 | } |
0efb6e1b |
468 | | |
1bbd4a2b |
469 | /(bit varying|varbit)/i |
3022f45b |
470 | { |
471 | $return = { type => 'varbit' }; |
472 | } |
0efb6e1b |
473 | | |
1bbd4a2b |
474 | /character varying/i |
3022f45b |
475 | { |
476 | $return = { type => 'varchar' }; |
477 | } |
0efb6e1b |
478 | | |
1bbd4a2b |
479 | /char(acter)?/i |
3022f45b |
480 | { |
481 | $return = { type => 'char' }; |
482 | } |
0efb6e1b |
483 | | |
1bbd4a2b |
484 | /bool(ean)?/i |
3022f45b |
485 | { |
486 | $return = { type => 'boolean' }; |
487 | } |
0efb6e1b |
488 | | |
1bbd4a2b |
489 | /bytea/i |
3022f45b |
490 | { |
82968eb9 |
491 | $return = { type => 'bytea' }; |
3022f45b |
492 | } |
0efb6e1b |
493 | | |
50840472 |
494 | /(timestamptz|timestamp)/i |
3022f45b |
495 | { |
496 | $return = { type => 'timestamp' }; |
497 | } |
0efb6e1b |
498 | | |
38a6a4f9 |
499 | /text/i |
500 | { |
501 | $return = { |
502 | type => 'text', |
503 | size => 64_000, |
504 | }; |
505 | } |
506 | | |
507 | /(bit|box|cidr|circle|date|inet|interval|line|lseg|macaddr|money|numeric|decimal|path|point|polygon|timetz|time|varchar)/i |
3022f45b |
508 | { |
509 | $return = { type => $item[1] }; |
510 | } |
0efb6e1b |
511 | |
4422e22a |
512 | parens_value_list : '(' VALUE(s /,/) ')' |
513 | { $item[2] } |
514 | |
0efb6e1b |
515 | parens_word_list : '(' WORD(s /,/) ')' |
516 | { $item[2] } |
4422e22a |
517 | |
0efb6e1b |
518 | field_size : '(' num_range ')' { $item{'num_range'} } |
4422e22a |
519 | |
0efb6e1b |
520 | num_range : DIGITS ',' DIGITS |
4422e22a |
521 | { $return = $item[1].','.$item[3] } |
522 | | DIGITS |
523 | { $return = $item[1] } |
524 | |
f2f71b8e |
525 | table_constraint : comment(s?) constraint_name(?) table_constraint_type deferrable(?) deferred(?) comment(s?) |
0efb6e1b |
526 | { |
527 | my $desc = $item{'table_constraint_type'}; |
528 | my $type = $desc->{'type'}; |
529 | my $fields = $desc->{'fields'}; |
530 | my $expression = $desc->{'expression'}; |
f2f71b8e |
531 | my @comments = ( @{ $item[1] }, @{ $item[-1] } ); |
0efb6e1b |
532 | |
533 | $return = { |
534 | name => $item{'constraint_name'}[0] || '', |
b3384294 |
535 | supertype => 'constraint', |
536 | type => $type, |
0efb6e1b |
537 | fields => $type ne 'check' ? $fields : [], |
538 | expression => $type eq 'check' ? $expression : '', |
f04713db |
539 | deferrable => $item{'deferrable'}, |
0efb6e1b |
540 | deferred => $item{'deferred'}, |
541 | reference_table => $desc->{'reference_table'}, |
542 | reference_fields => $desc->{'reference_fields'}, |
543 | match_type => $desc->{'match_type'}[0], |
0012a163 |
544 | on_delete_do => $desc->{'on_delete_do'}, |
545 | on_update_do => $desc->{'on_update_do'}, |
f2f71b8e |
546 | comments => [ @comments ], |
0efb6e1b |
547 | } |
548 | } |
4422e22a |
549 | |
0efb6e1b |
550 | table_constraint_type : /primary key/i '(' name_with_opt_quotes(s /,/) ')' |
551 | { |
552 | $return = { |
553 | type => 'primary_key', |
554 | fields => $item[3], |
555 | } |
556 | } |
557 | | |
558 | /unique/i '(' name_with_opt_quotes(s /,/) ')' |
559 | { |
560 | $return = { |
561 | type => 'unique', |
562 | fields => $item[3], |
563 | } |
564 | } |
565 | | |
b3384294 |
566 | /check/i '(' /[^)]+/ ')' |
0efb6e1b |
567 | { |
568 | $return = { |
569 | type => 'check', |
570 | expression => $item[3], |
571 | } |
572 | } |
573 | | |
3022f45b |
574 | /foreign key/i '(' name_with_opt_quotes(s /,/) ')' /references/i table_name parens_word_list(?) match_type(?) key_action(s?) |
0efb6e1b |
575 | { |
3022f45b |
576 | my ( $on_delete, $on_update ); |
577 | for my $action ( @{ $item[9] || [] } ) { |
578 | $on_delete = $action->{'action'} if $action->{'type'} eq 'delete'; |
579 | $on_update = $action->{'action'} if $action->{'type'} eq 'update'; |
580 | } |
581 | |
0efb6e1b |
582 | $return = { |
b3384294 |
583 | supertype => 'constraint', |
0efb6e1b |
584 | type => 'foreign_key', |
585 | fields => $item[3], |
586 | reference_table => $item[6], |
587 | reference_fields => $item[7][0], |
588 | match_type => $item[8][0], |
3022f45b |
589 | on_delete_do => $on_delete || '', |
590 | on_update_do => $on_update || '', |
0efb6e1b |
591 | } |
592 | } |
593 | |
594 | deferrable : /not/i /deferrable/i |
595 | { |
596 | $return = ( $item[1] =~ /not/i ) ? 0 : 1; |
597 | } |
4422e22a |
598 | |
0efb6e1b |
599 | deferred : /initially/i /(deferred|immediate)/i { $item[2] } |
4422e22a |
600 | |
0efb6e1b |
601 | match_type : /match full/i { 'match_full' } |
602 | | |
603 | /match partial/i { 'match_partial' } |
604 | |
3022f45b |
605 | key_action : key_delete |
606 | | |
607 | key_update |
0efb6e1b |
608 | |
3022f45b |
609 | key_delete : /on delete/i key_mutation |
610 | { |
611 | $return => { |
612 | type => 'delete', |
613 | action => $item[2], |
614 | }; |
615 | } |
616 | |
617 | key_update : /on update/i key_mutation |
618 | { |
619 | $return => { |
620 | type => 'update', |
621 | action => $item[2], |
622 | }; |
623 | } |
624 | |
625 | key_mutation : /no action/i { $return = 'no_action' } |
626 | | |
627 | /restrict/i { $return = 'restrict' } |
628 | | |
629 | /cascade/i { $return = 'cascade' } |
630 | | |
38a6a4f9 |
631 | /set null/i { $return = 'set null' } |
3022f45b |
632 | | |
38a6a4f9 |
633 | /set default/i { $return = 'set default' } |
0efb6e1b |
634 | |
00ef67ea |
635 | alter : alter_table table_name add_column field ';' |
636 | { |
637 | my $field_def = $item[4]; |
638 | $tables{ $item[2] }{'fields'}{ $field_def->{'name'} } = { |
639 | %$field_def, order => $field_order++ |
640 | }; |
641 | 1; |
642 | } |
643 | |
644 | alter : alter_table table_name ADD table_constraint ';' |
0012a163 |
645 | { |
646 | my $table_name = $item[2]; |
647 | my $constraint = $item[4]; |
0012a163 |
648 | push @{ $tables{ $table_name }{'constraints'} }, $constraint; |
00ef67ea |
649 | 1; |
0012a163 |
650 | } |
651 | |
00ef67ea |
652 | alter : alter_table table_name drop_column NAME restrict_or_cascade(?) ';' |
653 | { |
654 | $tables{ $item[2] }{'fields'}{ $item[4] }{'drop'} = 1; |
655 | 1; |
656 | } |
0012a163 |
657 | |
00ef67ea |
658 | alter : alter_table table_name alter_column NAME alter_default_val ';' |
659 | { |
660 | $tables{ $item[2] }{'fields'}{ $item[4] }{'default'} = |
661 | $item[5]->{'value'}; |
662 | 1; |
663 | } |
664 | |
665 | # |
666 | # These will just parse for now but won't affect the structure. - ky |
667 | # |
668 | alter : alter_table table_name /rename/i /to/i NAME ';' |
669 | { 1 } |
670 | |
671 | alter : alter_table table_name alter_column NAME SET /statistics/i INTEGER ';' |
672 | { 1 } |
673 | |
674 | alter : alter_table table_name alter_column NAME SET /storage/i storage_type ';' |
675 | { 1 } |
676 | |
677 | alter : alter_table table_name rename_column NAME /to/i NAME ';' |
678 | { 1 } |
679 | |
680 | alter : alter_table table_name DROP /constraint/i NAME restrict_or_cascade ';' |
681 | { 1 } |
682 | |
683 | alter : alter_table table_name /owner/i /to/i NAME ';' |
684 | { 1 } |
685 | |
686 | storage_type : /(plain|external|extended|main)/i |
687 | |
688 | alter_default_val : SET default_val |
689 | { |
690 | $return = { value => $item[2]->{'value'} } |
691 | } |
692 | | DROP DEFAULT |
693 | { |
694 | $return = { value => undef } |
695 | } |
696 | |
697 | # |
698 | # This is a little tricky to get right, at least WRT to making the |
699 | # tests pass. The problem is that the constraints are stored just as |
700 | # a list (no name access), and the tests expect the constraints in a |
701 | # particular order. I'm going to leave the rule but disable the code |
702 | # for now. - ky |
703 | # |
704 | alter : alter_table table_name alter_column NAME alter_nullable ';' |
705 | { |
706 | # my $table_name = $item[2]; |
707 | # my $field_name = $item[4]; |
708 | # my $is_nullable = $item[5]->{'is_nullable'}; |
709 | # |
710 | # $tables{ $table_name }{'fields'}{ $field_name }{'is_nullable'} = |
711 | # $is_nullable; |
712 | # |
713 | # if ( $is_nullable ) { |
714 | # 1; |
715 | # push @{ $tables{ $table_name }{'constraints'} }, { |
716 | # type => 'not_null', |
717 | # fields => [ $field_name ], |
718 | # }; |
719 | # } |
720 | # else { |
721 | # for my $i ( |
722 | # 0 .. $#{ $tables{ $table_name }{'constraints'} || [] } |
723 | # ) { |
724 | # my $c = $tables{ $table_name }{'constraints'}[ $i ] or next; |
725 | # my $fields = join( '', @{ $c->{'fields'} || [] } ) or next; |
726 | # if ( $c->{'type'} eq 'not_null' && $fields eq $field_name ) { |
727 | # delete $tables{ $table_name }{'constraints'}[ $i ]; |
728 | # last; |
729 | # } |
730 | # } |
731 | # } |
732 | |
733 | 1; |
734 | } |
735 | |
736 | alter_nullable : SET not_null |
737 | { |
738 | $return = { is_nullable => 0 } |
739 | } |
740 | | DROP not_null |
741 | { |
742 | $return = { is_nullable => 1 } |
743 | } |
744 | |
745 | not_null : /not/i /null/i |
746 | |
747 | add_column : ADD COLUMN(?) |
748 | |
749 | alter_table : ALTER TABLE ONLY(?) |
750 | |
751 | drop_column : DROP COLUMN(?) |
752 | |
753 | alter_column : ALTER COLUMN(?) |
754 | |
755 | rename_column : /rename/i COLUMN(?) |
756 | |
757 | restrict_or_cascade : /restrict/i | |
758 | /cascade/i |
759 | |
760 | # |
761 | # End basically useless stuff. - ky |
762 | # |
0012a163 |
763 | |
0d51cd9e |
764 | create_table : /create/i TABLE |
0efb6e1b |
765 | |
766 | create_index : /create/i /index/i |
4422e22a |
767 | |
00ef67ea |
768 | default_val : DEFAULT /(\d+|'[^']*'|\w+\(.*?\))|\w+/ |
4422e22a |
769 | { |
f04713db |
770 | my $val = defined $item[2] ? $item[2] : ''; |
771 | $val =~ s/^'|'$//g; |
0efb6e1b |
772 | $return = { |
82968eb9 |
773 | supertype => 'constraint', |
774 | type => 'default', |
0efb6e1b |
775 | value => $val, |
776 | } |
4422e22a |
777 | } |
f27085c9 |
778 | | /null/i |
779 | { |
780 | $return = { |
781 | supertype => 'constraint', |
782 | type => 'default', |
783 | value => 'NULL', |
784 | } |
785 | } |
4422e22a |
786 | |
4422e22a |
787 | name_with_opt_paren : NAME parens_value_list(s?) |
0efb6e1b |
788 | { $item[2][0] ? "$item[1]($item[2][0][0])" : $item[1] } |
4422e22a |
789 | |
790 | unique : /unique/i { 1 } |
791 | |
792 | key : /key/i | /index/i |
793 | |
0efb6e1b |
794 | table_option : /inherits/i '(' name_with_opt_quotes(s /,/) ')' |
4422e22a |
795 | { |
0efb6e1b |
796 | $return = { type => 'inherits', table_name => $item[3] } |
797 | } |
798 | | |
799 | /with(out)? oids/i |
800 | { |
801 | $return = { type => $item[1] =~ /out/i ? 'without_oids' : 'with_oids' } |
4422e22a |
802 | } |
803 | |
00ef67ea |
804 | ADD : /add/i |
805 | |
806 | ALTER : /alter/i |
807 | |
808 | ONLY : /only/i |
809 | |
810 | DEFAULT : /default/i |
811 | |
812 | DROP : /drop/i |
813 | |
814 | COLUMN : /column/i |
815 | |
0d51cd9e |
816 | TABLE : /table/i |
817 | |
0efb6e1b |
818 | SEMICOLON : /\s*;\n?/ |
819 | |
00ef67ea |
820 | INTEGER : /\d+/ |
821 | |
4422e22a |
822 | WORD : /\w+/ |
823 | |
824 | DIGITS : /\d+/ |
825 | |
826 | COMMA : ',' |
827 | |
00ef67ea |
828 | SET : /set/i |
829 | |
4422e22a |
830 | NAME : "`" /\w+/ "`" |
831 | { $item[2] } |
832 | | /\w+/ |
833 | { $item[1] } |
0012a163 |
834 | | /[\$\w]+/ |
835 | { $item[1] } |
4422e22a |
836 | |
837 | VALUE : /[-+]?\.?\d+(?:[eE]\d+)?/ |
838 | { $item[1] } |
839 | | /'.*?'/ # XXX doesn't handle embedded quotes |
840 | { $item[1] } |
f04713db |
841 | | /null/i |
4422e22a |
842 | { 'NULL' } |
843 | |
844 | !; |
845 | |
846 | # ------------------------------------------------------------------- |
847 | sub parse { |
848 | my ( $translator, $data ) = @_; |
849 | $parser ||= Parse::RecDescent->new($GRAMMAR); |
850 | |
851 | $::RD_TRACE = $translator->trace ? 1 : undef; |
852 | $DEBUG = $translator->debug; |
853 | |
854 | unless (defined $parser) { |
855 | return $translator->error("Error instantiating Parse::RecDescent ". |
856 | "instance: Bad grammer"); |
857 | } |
858 | |
859 | my $result = $parser->startrule($data); |
860 | die "Parse failed.\n" unless defined $result; |
861 | warn Dumper($result) if $DEBUG; |
82968eb9 |
862 | |
863 | my $schema = $translator->schema; |
864 | my @tables = sort { |
865 | $result->{ $a }->{'order'} <=> $result->{ $b }->{'order'} |
866 | } keys %{ $result }; |
867 | |
868 | for my $table_name ( @tables ) { |
869 | my $tdata = $result->{ $table_name }; |
870 | my $table = $schema->add_table( |
871 | name => $tdata->{'table_name'}, |
d7fcc1d6 |
872 | ) or die "Couldn't create table '$table_name': " . $schema->error; |
82968eb9 |
873 | |
874 | my @fields = sort { |
b3384294 |
875 | $tdata->{'fields'}->{ $a }->{'order'} |
82968eb9 |
876 | <=> |
b3384294 |
877 | $tdata->{'fields'}->{ $b }->{'order'} |
82968eb9 |
878 | } keys %{ $tdata->{'fields'} }; |
879 | |
880 | for my $fname ( @fields ) { |
881 | my $fdata = $tdata->{'fields'}{ $fname }; |
00ef67ea |
882 | next if $fdata->{'drop'}; |
82968eb9 |
883 | my $field = $table->add_field( |
884 | name => $fdata->{'name'}, |
885 | data_type => $fdata->{'data_type'}, |
886 | size => $fdata->{'size'}, |
887 | default_value => $fdata->{'default'}, |
7eac5e12 |
888 | is_auto_increment => $fdata->{'is_auto_increment'}, |
00ef67ea |
889 | is_nullable => $fdata->{'is_nullable'}, |
82968eb9 |
890 | ) or die $table->error; |
891 | |
892 | $table->primary_key( $field->name ) if $fdata->{'is_primary_key'}; |
893 | |
894 | for my $cdata ( @{ $fdata->{'constraints'} } ) { |
895 | next unless $cdata->{'type'} eq 'foreign_key'; |
896 | $cdata->{'fields'} ||= [ $field->name ]; |
897 | push @{ $tdata->{'constraints'} }, $cdata; |
898 | } |
899 | } |
900 | |
901 | for my $idata ( @{ $tdata->{'indices'} || [] } ) { |
902 | my $index = $table->add_index( |
903 | name => $idata->{'name'}, |
904 | type => uc $idata->{'type'}, |
905 | fields => $idata->{'fields'}, |
906 | ) or die $table->error; |
907 | } |
908 | |
909 | for my $cdata ( @{ $tdata->{'constraints'} || [] } ) { |
910 | my $constraint = $table->add_constraint( |
911 | name => $cdata->{'name'}, |
912 | type => $cdata->{'type'}, |
913 | fields => $cdata->{'fields'}, |
914 | reference_table => $cdata->{'reference_table'}, |
915 | reference_fields => $cdata->{'reference_fields'}, |
916 | match_type => $cdata->{'match_type'} || '', |
917 | on_delete => $cdata->{'on_delete_do'}, |
918 | on_update => $cdata->{'on_update_do'}, |
b3384294 |
919 | expression => $cdata->{'expression'}, |
920 | ) or die "Can't add constraint of type '" . |
921 | $cdata->{'type'} . "' to table '" . $table->name . |
922 | "': " . $table->error; |
82968eb9 |
923 | } |
924 | } |
925 | |
f62bd16c |
926 | return 1; |
4422e22a |
927 | } |
928 | |
929 | 1; |
930 | |
82968eb9 |
931 | # ------------------------------------------------------------------- |
932 | # Rescue the drowning and tie your shoestrings. |
933 | # Henry David Thoreau |
934 | # ------------------------------------------------------------------- |
4422e22a |
935 | |
936 | =pod |
937 | |
0efb6e1b |
938 | =head1 AUTHORS |
4422e22a |
939 | |
940 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>, |
b8ea6076 |
941 | Allen Day E<lt>allenday@ucla.eduE<gt>. |
4422e22a |
942 | |
943 | =head1 SEE ALSO |
944 | |
945 | perl(1), Parse::RecDescent. |
946 | |
947 | =cut |