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1 | package SQL::Translator::Producer::PostgreSQL; |
2 | |
3 | # ------------------------------------------------------------------- |
7ed7402c |
4 | # $Id: PostgreSQL.pm,v 1.29 2007-06-04 04:01:14 mwz444 Exp $ |
f8f0253c |
5 | # ------------------------------------------------------------------- |
977651a5 |
6 | # Copyright (C) 2002-4 SQLFairy Authors |
f8f0253c |
7 | # |
8 | # This program is free software; you can redistribute it and/or |
9 | # modify it under the terms of the GNU General Public License as |
10 | # published by the Free Software Foundation; version 2. |
11 | # |
12 | # This program is distributed in the hope that it will be useful, but |
13 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | # General Public License for more details. |
16 | # |
17 | # You should have received a copy of the GNU General Public License |
18 | # along with this program; if not, write to the Free Software |
19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
20 | # 02111-1307 USA |
21 | # ------------------------------------------------------------------- |
22 | |
96844cae |
23 | =head1 NAME |
24 | |
25 | SQL::Translator::Producer::PostgreSQL - PostgreSQL producer for SQL::Translator |
26 | |
20770e44 |
27 | =head1 SYNOPSIS |
28 | |
29 | my $t = SQL::Translator->new( parser => '...', producer => 'PostgreSQL' ); |
30 | $t->translate; |
31 | |
32 | =head1 DESCRIPTION |
33 | |
34 | Creates a DDL suitable for PostgreSQL. Very heavily based on the Oracle |
35 | producer. |
36 | |
96844cae |
37 | =cut |
38 | |
f8f0253c |
39 | use strict; |
bfb5a568 |
40 | use warnings; |
999859d7 |
41 | use vars qw[ $DEBUG $WARN $VERSION %used_names ]; |
7ed7402c |
42 | $VERSION = sprintf "%d.%02d", q$Revision: 1.29 $ =~ /(\d+)\.(\d+)/; |
a25ac5d2 |
43 | $DEBUG = 0 unless defined $DEBUG; |
f8f0253c |
44 | |
0c43e0a1 |
45 | use SQL::Translator::Schema::Constants; |
296c2701 |
46 | use SQL::Translator::Utils qw(debug header_comment); |
f8f0253c |
47 | use Data::Dumper; |
48 | |
bfb5a568 |
49 | my %translate; |
50 | my $max_id_length; |
51 | |
52 | BEGIN { |
53 | |
54 | %translate = ( |
d529894e |
55 | # |
56 | # MySQL types |
57 | # |
58 | bigint => 'bigint', |
4328d7bd |
59 | double => 'numeric', |
60 | decimal => 'numeric', |
61 | float => 'numeric', |
d529894e |
62 | int => 'integer', |
63 | mediumint => 'integer', |
64 | smallint => 'smallint', |
65 | tinyint => 'smallint', |
c8c17a58 |
66 | char => 'character', |
da8e499e |
67 | varchar => 'character varying', |
d529894e |
68 | longtext => 'text', |
69 | mediumtext => 'text', |
70 | text => 'text', |
71 | tinytext => 'text', |
72 | tinyblob => 'bytea', |
73 | blob => 'bytea', |
74 | mediumblob => 'bytea', |
75 | longblob => 'bytea', |
da8e499e |
76 | enum => 'character varying', |
77 | set => 'character varying', |
d529894e |
78 | date => 'date', |
79 | datetime => 'timestamp', |
e56dabb7 |
80 | time => 'time', |
d529894e |
81 | timestamp => 'timestamp', |
82 | year => 'date', |
83 | |
84 | # |
85 | # Oracle types |
86 | # |
96844cae |
87 | number => 'integer', |
c8c17a58 |
88 | char => 'character', |
da8e499e |
89 | varchar2 => 'character varying', |
96844cae |
90 | long => 'text', |
91 | CLOB => 'bytea', |
92 | date => 'date', |
93 | |
94 | # |
95 | # Sybase types |
96 | # |
97 | int => 'integer', |
98 | money => 'money', |
da8e499e |
99 | varchar => 'character varying', |
96844cae |
100 | datetime => 'timestamp', |
101 | text => 'text', |
4328d7bd |
102 | real => 'numeric', |
96844cae |
103 | comment => 'text', |
104 | bit => 'bit', |
105 | tinyint => 'smallint', |
4328d7bd |
106 | float => 'numeric', |
d529894e |
107 | ); |
108 | |
bfb5a568 |
109 | $max_id_length = 62; |
110 | } |
96844cae |
111 | my %reserved = map { $_, 1 } qw[ |
112 | ALL ANALYSE ANALYZE AND ANY AS ASC |
113 | BETWEEN BINARY BOTH |
114 | CASE CAST CHECK COLLATE COLUMN CONSTRAINT CROSS |
115 | CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER |
116 | DEFAULT DEFERRABLE DESC DISTINCT DO |
117 | ELSE END EXCEPT |
118 | FALSE FOR FOREIGN FREEZE FROM FULL |
119 | GROUP HAVING |
120 | ILIKE IN INITIALLY INNER INTERSECT INTO IS ISNULL |
121 | JOIN LEADING LEFT LIKE LIMIT |
122 | NATURAL NEW NOT NOTNULL NULL |
123 | OFF OFFSET OLD ON ONLY OR ORDER OUTER OVERLAPS |
124 | PRIMARY PUBLIC REFERENCES RIGHT |
125 | SELECT SESSION_USER SOME TABLE THEN TO TRAILING TRUE |
126 | UNION UNIQUE USER USING VERBOSE WHEN WHERE |
127 | ]; |
d529894e |
128 | |
bfb5a568 |
129 | # my $max_id_length = 62; |
96844cae |
130 | my %used_identifiers = (); |
131 | my %global_names; |
132 | my %unreserve; |
133 | my %truncated; |
134 | |
135 | =pod |
136 | |
137 | =head1 PostgreSQL Create Table Syntax |
138 | |
139 | CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name ( |
140 | { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ] |
141 | | table_constraint } [, ... ] |
142 | ) |
143 | [ INHERITS ( parent_table [, ... ] ) ] |
144 | [ WITH OIDS | WITHOUT OIDS ] |
145 | |
146 | where column_constraint is: |
147 | |
148 | [ CONSTRAINT constraint_name ] |
149 | { NOT NULL | NULL | UNIQUE | PRIMARY KEY | |
150 | CHECK (expression) | |
151 | REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ] |
152 | [ ON DELETE action ] [ ON UPDATE action ] } |
153 | [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
154 | |
155 | and table_constraint is: |
156 | |
157 | [ CONSTRAINT constraint_name ] |
158 | { UNIQUE ( column_name [, ... ] ) | |
159 | PRIMARY KEY ( column_name [, ... ] ) | |
160 | CHECK ( expression ) | |
161 | FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ] |
162 | [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] } |
163 | [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] |
164 | |
da8e499e |
165 | =head1 Create Index Syntax |
166 | |
167 | CREATE [ UNIQUE ] INDEX index_name ON table |
168 | [ USING acc_method ] ( column [ ops_name ] [, ...] ) |
169 | [ WHERE predicate ] |
170 | CREATE [ UNIQUE ] INDEX index_name ON table |
171 | [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] ) |
172 | [ WHERE predicate ] |
173 | |
96844cae |
174 | =cut |
f8f0253c |
175 | |
96844cae |
176 | # ------------------------------------------------------------------- |
f8f0253c |
177 | sub produce { |
a1d94525 |
178 | my $translator = shift; |
a25ac5d2 |
179 | local $DEBUG = $translator->debug; |
180 | local $WARN = $translator->show_warnings; |
a1d94525 |
181 | my $no_comments = $translator->no_comments; |
182 | my $add_drop_table = $translator->add_drop_table; |
183 | my $schema = $translator->schema; |
5342f5c1 |
184 | my $pargs = $translator->producer_args; |
999859d7 |
185 | local %used_names = (); |
5342f5c1 |
186 | |
187 | my $postgres_version = $pargs->{postgres_version} || 0; |
96844cae |
188 | |
bfb5a568 |
189 | my $qt = ''; |
190 | $qt = '"' if ($translator->quote_table_names); |
191 | my $qf = ''; |
192 | $qf = '"' if ($translator->quote_field_names); |
193 | |
da8e499e |
194 | my $output; |
5ee19df8 |
195 | $output .= header_comment unless ($no_comments); |
96844cae |
196 | |
08d91aad |
197 | my (@table_defs, @fks); |
0c43e0a1 |
198 | for my $table ( $schema->get_tables ) { |
08d91aad |
199 | |
200 | my ($table_def, $fks) = create_table($table, |
201 | { quote_table_names => $qt, |
202 | quote_field_names => $qf, |
203 | no_comments => $no_comments, |
5342f5c1 |
204 | postgres_version => $postgres_version, |
08d91aad |
205 | add_drop_table => $add_drop_table,}); |
206 | push @table_defs, $table_def; |
207 | push @fks, @$fks; |
208 | |
da8e499e |
209 | } |
210 | |
296c2701 |
211 | for my $view ( $schema->get_views ) { |
212 | push @table_defs, create_view($view, { |
a25ac5d2 |
213 | add_drop_view => $add_drop_table, |
296c2701 |
214 | quote_table_names => $qt, |
215 | quote_field_names => $qf, |
216 | no_comments => $no_comments, |
217 | }); |
218 | } |
219 | |
bfb5a568 |
220 | $output = join("\n\n", @table_defs); |
08d91aad |
221 | if ( @fks ) { |
222 | $output .= "--\n-- Foreign Key Definitions\n--\n\n" unless $no_comments; |
b08b5416 |
223 | $output .= join( "\n\n", @fks ) . "\n"; |
08d91aad |
224 | } |
021dbce8 |
225 | |
da8e499e |
226 | if ( $WARN ) { |
227 | if ( %truncated ) { |
228 | warn "Truncated " . keys( %truncated ) . " names:\n"; |
229 | warn "\t" . join( "\n\t", sort keys %truncated ) . "\n"; |
230 | } |
231 | |
232 | if ( %unreserve ) { |
233 | warn "Encounted " . keys( %unreserve ) . |
234 | " unsafe names in schema (reserved or invalid):\n"; |
235 | warn "\t" . join( "\n\t", sort keys %unreserve ) . "\n"; |
236 | } |
f8f0253c |
237 | } |
238 | |
da8e499e |
239 | return $output; |
f8f0253c |
240 | } |
241 | |
96844cae |
242 | # ------------------------------------------------------------------- |
243 | sub mk_name { |
0c43e0a1 |
244 | my $basename = shift || ''; |
245 | my $type = shift || ''; |
246 | my $scope = shift || ''; |
247 | my $critical = shift || ''; |
96844cae |
248 | my $basename_orig = $basename; |
bfb5a568 |
249 | # my $max_id_length = 62; |
2ad4c2c8 |
250 | my $max_name = $type |
251 | ? $max_id_length - (length($type) + 1) |
252 | : $max_id_length; |
96844cae |
253 | $basename = substr( $basename, 0, $max_name ) |
254 | if length( $basename ) > $max_name; |
255 | my $name = $type ? "${type}_$basename" : $basename; |
256 | |
257 | if ( $basename ne $basename_orig and $critical ) { |
258 | my $show_type = $type ? "+'$type'" : ""; |
259 | warn "Truncating '$basename_orig'$show_type to $max_id_length ", |
260 | "character limit to make '$name'\n" if $WARN; |
261 | $truncated{ $basename_orig } = $name; |
262 | } |
263 | |
264 | $scope ||= \%global_names; |
265 | if ( my $prev = $scope->{ $name } ) { |
266 | my $name_orig = $name; |
267 | $name .= sprintf( "%02d", ++$prev ); |
268 | substr($name, $max_id_length - 3) = "00" |
269 | if length( $name ) > $max_id_length; |
270 | |
271 | warn "The name '$name_orig' has been changed to ", |
272 | "'$name' to make it unique.\n" if $WARN; |
273 | |
274 | $scope->{ $name_orig }++; |
f8f0253c |
275 | } |
96844cae |
276 | |
277 | $scope->{ $name }++; |
278 | return $name; |
279 | } |
280 | |
281 | # ------------------------------------------------------------------- |
282 | sub unreserve { |
0c43e0a1 |
283 | my $name = shift || ''; |
284 | my $schema_obj_name = shift || ''; |
285 | |
96844cae |
286 | my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : ''; |
287 | |
288 | # also trap fields that don't begin with a letter |
bfb5a568 |
289 | return $name if (!$reserved{ uc $name }) && $name =~ /^[a-z]/i; |
96844cae |
290 | |
291 | if ( $schema_obj_name ) { |
292 | ++$unreserve{"$schema_obj_name.$name"}; |
293 | } |
294 | else { |
295 | ++$unreserve{"$name (table name)"}; |
296 | } |
297 | |
298 | my $unreserve = sprintf '%s_', $name; |
299 | return $unreserve.$suffix; |
f8f0253c |
300 | } |
301 | |
50840472 |
302 | # ------------------------------------------------------------------- |
303 | sub next_unused_name { |
999859d7 |
304 | my $name = shift || ''; |
305 | if ( !defined( $used_names{$name} ) ) { |
50840472 |
306 | $used_names{$name} = $name; |
307 | return $name; |
308 | } |
999859d7 |
309 | |
50840472 |
310 | my $i = 2; |
999859d7 |
311 | while ( defined( $used_names{ $name . $i } ) ) { |
50840472 |
312 | ++$i; |
313 | } |
314 | $name .= $i; |
315 | $used_names{$name} = $name; |
316 | return $name; |
317 | } |
318 | |
999859d7 |
319 | |
bfb5a568 |
320 | sub create_table |
321 | { |
322 | my ($table, $options) = @_; |
323 | |
324 | my $qt = $options->{quote_table_names} || ''; |
325 | my $qf = $options->{quote_field_names} || ''; |
326 | my $no_comments = $options->{no_comments} || 0; |
327 | my $add_drop_table = $options->{add_drop_table} || 0; |
5342f5c1 |
328 | my $postgres_version = $options->{postgres_version} || 0; |
bfb5a568 |
329 | |
330 | my $table_name = $table->name or next; |
331 | $table_name = mk_name( $table_name, '', undef, 1 ); |
08d91aad |
332 | my $table_name_ur = $qt ? $table_name : unreserve($table_name); |
bfb5a568 |
333 | $table->name($table_name_ur); |
334 | |
335 | # print STDERR "$table_name table_name\n"; |
5342f5c1 |
336 | my ( @comments, @field_defs, @sequence_defs, @constraint_defs, @type_defs, @type_drops, @fks ); |
bfb5a568 |
337 | |
7ed7402c |
338 | push @comments, "--\n-- Table: $table_name_ur\n--\n" unless $no_comments; |
bfb5a568 |
339 | |
340 | if ( $table->comments and !$no_comments ){ |
341 | my $c = "-- Comments: \n-- "; |
342 | $c .= join "\n-- ", $table->comments; |
7ed7402c |
343 | $c .= "\n--\n"; |
bfb5a568 |
344 | push @comments, $c; |
345 | } |
346 | |
347 | # |
348 | # Fields |
349 | # |
350 | my %field_name_scope; |
351 | for my $field ( $table->get_fields ) { |
352 | push @field_defs, create_field($field, { quote_table_names => $qt, |
353 | quote_field_names => $qf, |
354 | table_name => $table_name_ur, |
5342f5c1 |
355 | postgres_version => $postgres_version, |
356 | type_defs => \@type_defs, |
357 | type_drops => \@type_drops, |
bfb5a568 |
358 | constraint_defs => \@constraint_defs,}); |
359 | } |
360 | |
361 | # |
362 | # Index Declarations |
363 | # |
364 | my @index_defs = (); |
365 | # my $idx_name_default; |
366 | for my $index ( $table->get_indices ) { |
367 | my ($idef, $constraints) = create_index($index, |
368 | { |
369 | quote_field_names => $qf, |
370 | quote_table_names => $qt, |
371 | table_name => $table_name, |
372 | }); |
7ed7402c |
373 | $idef and push @index_defs, $idef; |
bfb5a568 |
374 | push @constraint_defs, @$constraints; |
375 | } |
376 | |
377 | # |
378 | # Table constraints |
379 | # |
380 | my $c_name_default; |
381 | for my $c ( $table->get_constraints ) { |
382 | my ($cdefs, $fks) = create_constraint($c, |
383 | { |
384 | quote_field_names => $qf, |
385 | quote_table_names => $qt, |
386 | table_name => $table_name, |
387 | }); |
388 | push @constraint_defs, @$cdefs; |
389 | push @fks, @$fks; |
390 | } |
391 | |
392 | my $create_statement; |
393 | $create_statement = join("\n", @comments); |
5342f5c1 |
394 | if ($add_drop_table) { |
395 | if ($postgres_version >= 8.2) { |
396 | $create_statement .= qq[DROP TABLE IF EXISTS $qt$table_name_ur$qt CASCADE;\n]; |
397 | $create_statement .= join ("\n", @type_drops) . "\n" |
398 | if $postgres_version >= 8.3; |
399 | } else { |
400 | $create_statement .= qq[DROP TABLE $qt$table_name_ur$qt CASCADE;\n]; |
401 | } |
402 | } |
403 | $create_statement .= join("\n", @type_defs) . "\n" |
404 | if $postgres_version >= 8.3; |
bfb5a568 |
405 | $create_statement .= qq[CREATE TABLE $qt$table_name_ur$qt (\n]. |
406 | join( ",\n", map { " $_" } @field_defs, @constraint_defs ). |
407 | "\n);" |
408 | ; |
bfb5a568 |
409 | |
999859d7 |
410 | $create_statement .= "\n" . join("\n", @index_defs) . "\n"; |
bfb5a568 |
411 | |
08d91aad |
412 | return $create_statement, \@fks; |
bfb5a568 |
413 | } |
414 | |
296c2701 |
415 | sub create_view { |
416 | my ($view, $options) = @_; |
417 | my $qt = $options->{quote_table_names} || ''; |
418 | my $qf = $options->{quote_field_names} || ''; |
a25ac5d2 |
419 | my $add_drop_view = $options->{add_drop_view}; |
296c2701 |
420 | |
421 | my $view_name = $view->name; |
422 | debug("PKG: Looking at view '${view_name}'\n"); |
423 | |
424 | my $create = ''; |
425 | $create .= "--\n-- View: ${qt}${view_name}${qt}\n--\n" |
426 | unless $options->{no_comments}; |
a25ac5d2 |
427 | $create .= "DROP VIEW ${qt}${view_name}${qt};\n" if $add_drop_view; |
296c2701 |
428 | $create .= 'CREATE'; |
296c2701 |
429 | |
430 | my $extra = $view->extra; |
431 | $create .= " TEMPORARY" if exists($extra->{temporary}) && $extra->{temporary}; |
432 | $create .= " VIEW ${qt}${view_name}${qt}"; |
433 | |
434 | if ( my @fields = $view->fields ) { |
435 | my $field_list = join ', ', map { "${qf}${_}${qf}" } @fields; |
436 | $create .= " ( ${field_list} )"; |
437 | } |
438 | |
439 | if ( my $sql = $view->sql ) { |
440 | $create .= " AS (\n ${sql}\n )"; |
441 | } |
442 | |
443 | if ( $extra->{check_option} ) { |
444 | $create .= ' WITH ' . uc $extra->{check_option} . ' CHECK OPTION'; |
445 | } |
446 | |
447 | $create .= ";\n\n"; |
448 | return $create; |
449 | } |
450 | |
bfb5a568 |
451 | { |
452 | |
453 | my %field_name_scope; |
454 | |
455 | sub create_field |
456 | { |
457 | my ($field, $options) = @_; |
458 | |
459 | my $qt = $options->{quote_table_names} || ''; |
460 | my $qf = $options->{quote_field_names} || ''; |
461 | my $table_name = $field->table->name; |
462 | my $constraint_defs = $options->{constraint_defs} || []; |
5342f5c1 |
463 | my $postgres_version = $options->{postgres_version} || 0; |
464 | my $type_defs = $options->{type_defs} || []; |
465 | my $type_drops = $options->{type_drops} || []; |
bfb5a568 |
466 | |
467 | $field_name_scope{$table_name} ||= {}; |
468 | my $field_name = mk_name( |
469 | $field->name, '', $field_name_scope{$table_name}, 1 |
470 | ); |
08d91aad |
471 | my $field_name_ur = $qf ? $field_name : unreserve($field_name, $table_name ); |
bfb5a568 |
472 | $field->name($field_name_ur); |
473 | my $field_comments = $field->comments |
474 | ? "-- " . $field->comments . "\n " |
475 | : ''; |
476 | |
477 | my $field_def = $field_comments.qq[$qf$field_name_ur$qf]; |
478 | |
479 | # |
480 | # Datatype |
481 | # |
482 | my @size = $field->size; |
483 | my $data_type = lc $field->data_type; |
484 | my %extra = $field->extra; |
485 | my $list = $extra{'list'} || []; |
486 | # todo deal with embedded quotes |
487 | my $commalist = join( ', ', map { qq['$_'] } @$list ); |
488 | my $seq_name; |
489 | |
5342f5c1 |
490 | if ($postgres_version >= 8.3 && $field->data_type eq 'enum') { |
491 | my $type_name = $field->table->name . '_' . $field->name . '_type'; |
492 | $field_def .= ' '. $type_name; |
493 | push @$type_defs, "CREATE TYPE $type_name AS ENUM ($commalist);"; |
494 | push @$type_drops, "DROP TYPE IF EXISTS $type_name;"; |
495 | } else { |
496 | $field_def .= ' '. convert_datatype($field); |
497 | } |
bfb5a568 |
498 | |
499 | # |
500 | # Default value -- disallow for timestamps |
501 | # |
f39e9c12 |
502 | # my $default = $data_type =~ /(timestamp|date)/i |
503 | # ? undef : $field->default_value; |
504 | my $default = $field->default_value; |
bfb5a568 |
505 | if ( defined $default ) { |
f39e9c12 |
506 | my $qd = "'"; |
507 | $qd = '' if ($default eq 'now()' || |
508 | $default eq 'CURRENT_TIMESTAMP'); |
bfb5a568 |
509 | $field_def .= sprintf( ' DEFAULT %s', |
510 | ( $field->is_auto_increment && $seq_name ) |
511 | ? qq[nextval('"$seq_name"'::text)] : |
f39e9c12 |
512 | ( $default =~ m/null/i ) ? 'NULL' : "$qd$default$qd" |
bfb5a568 |
513 | ); |
514 | } |
515 | |
516 | # |
517 | # Not null constraint |
518 | # |
519 | $field_def .= ' NOT NULL' unless $field->is_nullable; |
520 | |
521 | return $field_def; |
522 | } |
523 | } |
524 | |
bfb5a568 |
525 | sub create_index |
526 | { |
527 | my ($index, $options) = @_; |
528 | |
529 | my $qt = $options->{quote_table_names} ||''; |
530 | my $qf = $options->{quote_field_names} ||''; |
531 | my $table_name = $index->table->name; |
08d91aad |
532 | # my $table_name_ur = $qt ? unreserve($table_name) : $table_name; |
bfb5a568 |
533 | |
534 | my ($index_def, @constraint_defs); |
535 | |
bfb5a568 |
536 | my $name = $index->name || ''; |
537 | if ( $name ) { |
999859d7 |
538 | $name = next_unused_name($name); |
bfb5a568 |
539 | } |
540 | |
541 | my $type = $index->type || NORMAL; |
542 | my @fields = |
543 | map { $_ =~ s/\(.+\)//; $_ } |
08d91aad |
544 | map { $qt ? $_ : unreserve($_, $table_name ) } |
bfb5a568 |
545 | $index->fields; |
546 | next unless @fields; |
547 | |
548 | my $def_start = qq[Constraint "$name" ]; |
549 | if ( $type eq PRIMARY_KEY ) { |
550 | push @constraint_defs, "${def_start}PRIMARY KEY ". |
551 | '(' .$qf . join( $qf. ', '.$qf, @fields ) . $qf . ')'; |
552 | } |
553 | elsif ( $type eq UNIQUE ) { |
554 | push @constraint_defs, "${def_start}UNIQUE " . |
555 | '(' . $qf . join( $qf. ', '.$qf, @fields ) . $qf.')'; |
556 | } |
557 | elsif ( $type eq NORMAL ) { |
558 | $index_def = |
08d91aad |
559 | "CREATE INDEX ${qf}${name}${qf} on ${qt}${table_name}${qt} (". |
bfb5a568 |
560 | join( ', ', map { qq[$qf$_$qf] } @fields ). |
561 | ');' |
562 | ; |
563 | } |
564 | else { |
565 | warn "Unknown index type ($type) on table $table_name.\n" |
566 | if $WARN; |
567 | } |
568 | |
569 | return $index_def, \@constraint_defs; |
570 | } |
571 | |
572 | sub create_constraint |
573 | { |
574 | my ($c, $options) = @_; |
575 | |
576 | my $qf = $options->{quote_field_names} ||''; |
577 | my $qt = $options->{quote_table_names} ||''; |
578 | my $table_name = $c->table->name; |
579 | my (@constraint_defs, @fks); |
580 | |
581 | my $name = $c->name || ''; |
582 | if ( $name ) { |
999859d7 |
583 | $name = next_unused_name($name); |
bfb5a568 |
584 | } |
585 | |
586 | my @fields = |
587 | map { $_ =~ s/\(.+\)//; $_ } |
08d91aad |
588 | map { $qt ? $_ : unreserve( $_, $table_name )} |
bfb5a568 |
589 | $c->fields; |
590 | |
591 | my @rfields = |
592 | map { $_ =~ s/\(.+\)//; $_ } |
08d91aad |
593 | map { $qt ? $_ : unreserve( $_, $table_name )} |
bfb5a568 |
594 | $c->reference_fields; |
595 | |
596 | next if !@fields && $c->type ne CHECK_C; |
597 | my $def_start = $name ? qq[Constraint "$name" ] : ''; |
598 | if ( $c->type eq PRIMARY_KEY ) { |
599 | push @constraint_defs, "${def_start}PRIMARY KEY ". |
600 | '('.$qf . join( $qf.', '.$qf, @fields ) . $qf.')'; |
601 | } |
602 | elsif ( $c->type eq UNIQUE ) { |
999859d7 |
603 | $name = next_unused_name($name); |
bfb5a568 |
604 | push @constraint_defs, "${def_start}UNIQUE " . |
605 | '('.$qf . join( $qf.', '.$qf, @fields ) . $qf.')'; |
606 | } |
607 | elsif ( $c->type eq CHECK_C ) { |
608 | my $expression = $c->expression; |
609 | push @constraint_defs, "${def_start}CHECK ($expression)"; |
610 | } |
611 | elsif ( $c->type eq FOREIGN_KEY ) { |
612 | my $def .= "ALTER TABLE ${qt}${table_name}${qt} ADD FOREIGN KEY (" . |
613 | join( ', ', map { qq[$qf$_$qf] } @fields ) . ')' . |
614 | "\n REFERENCES " . $qt . $c->reference_table . $qt; |
615 | |
616 | if ( @rfields ) { |
617 | $def .= ' ('.$qf . join( $qf.', '.$qf, @rfields ) . $qf.')'; |
618 | } |
619 | |
620 | if ( $c->match_type ) { |
621 | $def .= ' MATCH ' . |
622 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
623 | } |
624 | |
625 | if ( $c->on_delete ) { |
626 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
627 | } |
628 | |
629 | if ( $c->on_update ) { |
630 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
631 | } |
632 | |
5342f5c1 |
633 | if ( $c->deferrable ) { |
634 | $def .= ' DEFERRABLE'; |
635 | } |
636 | |
bfb5a568 |
637 | push @fks, "$def;"; |
638 | } |
639 | |
640 | return \@constraint_defs, \@fks; |
641 | } |
bfb5a568 |
642 | |
643 | sub convert_datatype |
644 | { |
645 | my ($field) = @_; |
646 | |
647 | my @size = $field->size; |
648 | my $data_type = lc $field->data_type; |
649 | |
650 | if ( $data_type eq 'enum' ) { |
651 | # my $len = 0; |
652 | # $len = ($len < length($_)) ? length($_) : $len for (@$list); |
653 | # my $chk_name = mk_name( $table_name.'_'.$field_name, 'chk' ); |
654 | # push @$constraint_defs, |
655 | # qq[Constraint "$chk_name" CHECK ($qf$field_name$qf ]. |
656 | # qq[IN ($commalist))]; |
657 | $data_type = 'character varying'; |
658 | } |
659 | elsif ( $data_type eq 'set' ) { |
660 | $data_type = 'character varying'; |
661 | } |
662 | elsif ( $field->is_auto_increment ) { |
663 | if ( defined $size[0] && $size[0] > 11 ) { |
664 | $data_type = 'bigserial'; |
665 | } |
666 | else { |
667 | $data_type = 'serial'; |
668 | } |
669 | undef @size; |
670 | } |
671 | else { |
672 | $data_type = defined $translate{ $data_type } ? |
673 | $translate{ $data_type } : |
674 | $data_type; |
675 | } |
676 | |
677 | if ( $data_type =~ /timestamp/i ) { |
678 | if ( defined $size[0] && $size[0] > 6 ) { |
679 | $size[0] = 6; |
680 | } |
681 | } |
682 | |
683 | if ( $data_type eq 'integer' ) { |
684 | if ( defined $size[0] && $size[0] > 0) { |
685 | if ( $size[0] > 10 ) { |
686 | $data_type = 'bigint'; |
687 | } |
688 | elsif ( $size[0] < 5 ) { |
689 | $data_type = 'smallint'; |
690 | } |
691 | else { |
692 | $data_type = 'integer'; |
693 | } |
694 | } |
695 | else { |
696 | $data_type = 'integer'; |
697 | } |
698 | } |
e56dabb7 |
699 | my @type_without_size = qw/bigint boolean box bytea cidr circle date inet |
700 | integer smallint text line lseg macaddr money |
701 | path point polygon real/; |
702 | foreach (@type_without_size) { |
703 | if ( $data_type =~ qr/$_/ ) { |
704 | undef @size; last; |
705 | } |
706 | } |
bfb5a568 |
707 | |
bfb5a568 |
708 | if ( defined $size[0] && $size[0] > 0 ) { |
709 | $data_type .= '(' . join( ',', @size ) . ')'; |
710 | } |
08d91aad |
711 | elsif (defined $size[0] && $data_type eq 'timestamp' ) { |
712 | $data_type .= '(' . join( ',', @size ) . ')'; |
713 | } |
bfb5a568 |
714 | |
715 | |
716 | return $data_type; |
717 | } |
718 | |
719 | |
720 | sub alter_field |
721 | { |
722 | my ($from_field, $to_field) = @_; |
723 | |
724 | die "Can't alter field in another table" |
725 | if($from_field->table->name ne $to_field->table->name); |
726 | |
727 | my @out; |
728 | push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s SET NOT NULL;', |
729 | $to_field->table->name, |
730 | $to_field->name) if(!$to_field->is_nullable and |
731 | $from_field->is_nullable); |
732 | |
733 | my $from_dt = convert_datatype($from_field); |
734 | my $to_dt = convert_datatype($to_field); |
735 | push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s TYPE %s;', |
736 | $to_field->table->name, |
737 | $to_field->name, |
738 | $to_dt) if($to_dt ne $from_dt); |
739 | |
740 | push @out, sprintf('ALTER TABLE %s RENAME COLUMN %s TO %s;', |
741 | $to_field->table->name, |
742 | $from_field->name, |
743 | $to_field->name) if($from_field->name ne $to_field->name); |
744 | |
745 | push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s SET DEFAULT %s;', |
746 | $to_field->table->name, |
747 | $to_field->name, |
748 | $to_field->default_value) |
749 | if(defined $to_field->default_value && |
750 | $from_field->default_value ne $to_field->default_value); |
751 | |
752 | return wantarray ? @out : join("\n", @out); |
753 | |
754 | } |
755 | |
756 | sub add_field |
757 | { |
758 | my ($new_field) = @_; |
759 | |
760 | my $out = sprintf('ALTER TABLE %s ADD COLUMN %s;', |
761 | $new_field->table->name, |
762 | create_field($new_field)); |
763 | return $out; |
764 | |
765 | } |
766 | |
767 | sub drop_field |
768 | { |
769 | my ($old_field) = @_; |
770 | |
771 | my $out = sprintf('ALTER TABLE %s DROP COLUMN %s;', |
772 | $old_field->table->name, |
773 | $old_field->name); |
774 | |
775 | return $out; |
776 | } |
777 | |
f8f0253c |
778 | 1; |
f8f0253c |
779 | |
96844cae |
780 | # ------------------------------------------------------------------- |
781 | # Life is full of misery, loneliness, and suffering -- |
782 | # and it's all over much too soon. |
783 | # Woody Allen |
784 | # ------------------------------------------------------------------- |
f8f0253c |
785 | |
96844cae |
786 | =pod |
f8f0253c |
787 | |
20770e44 |
788 | =head1 SEE ALSO |
789 | |
790 | SQL::Translator, SQL::Translator::Producer::Oracle. |
791 | |
f8f0253c |
792 | =head1 AUTHOR |
793 | |
20770e44 |
794 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
f8f0253c |
795 | |
796 | =cut |