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1 | package SQL::Translator::Producer::PostgreSQL; |
2 | |
3 | # ------------------------------------------------------------------- |
cc00c034 |
4 | # $Id: PostgreSQL.pm,v 1.28 2006-11-20 23:56:14 schiffbruechige 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; |
96844cae |
41 | use vars qw[ $DEBUG $WARN $VERSION ]; |
cc00c034 |
42 | $VERSION = sprintf "%d.%02d", q$Revision: 1.28 $ =~ /(\d+)\.(\d+)/; |
f8f0253c |
43 | $DEBUG = 1 unless defined $DEBUG; |
44 | |
0c43e0a1 |
45 | use SQL::Translator::Schema::Constants; |
5ee19df8 |
46 | use SQL::Translator::Utils qw(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', |
80 | time => 'date', |
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; |
179 | $DEBUG = $translator->debug; |
180 | $WARN = $translator->show_warnings; |
181 | my $no_comments = $translator->no_comments; |
182 | my $add_drop_table = $translator->add_drop_table; |
183 | my $schema = $translator->schema; |
96844cae |
184 | |
bfb5a568 |
185 | my $qt = ''; |
186 | $qt = '"' if ($translator->quote_table_names); |
187 | my $qf = ''; |
188 | $qf = '"' if ($translator->quote_field_names); |
189 | |
da8e499e |
190 | my $output; |
5ee19df8 |
191 | $output .= header_comment unless ($no_comments); |
bfb5a568 |
192 | # my %used_index_names; |
96844cae |
193 | |
08d91aad |
194 | my (@table_defs, @fks); |
0c43e0a1 |
195 | for my $table ( $schema->get_tables ) { |
08d91aad |
196 | |
197 | my ($table_def, $fks) = create_table($table, |
198 | { quote_table_names => $qt, |
199 | quote_field_names => $qf, |
200 | no_comments => $no_comments, |
201 | add_drop_table => $add_drop_table,}); |
202 | push @table_defs, $table_def; |
203 | push @fks, @$fks; |
204 | |
da8e499e |
205 | } |
206 | |
bfb5a568 |
207 | $output = join("\n\n", @table_defs); |
08d91aad |
208 | if ( @fks ) { |
209 | $output .= "--\n-- Foreign Key Definitions\n--\n\n" unless $no_comments; |
b08b5416 |
210 | $output .= join( "\n\n", @fks ) . "\n"; |
08d91aad |
211 | } |
021dbce8 |
212 | |
da8e499e |
213 | if ( $WARN ) { |
214 | if ( %truncated ) { |
215 | warn "Truncated " . keys( %truncated ) . " names:\n"; |
216 | warn "\t" . join( "\n\t", sort keys %truncated ) . "\n"; |
217 | } |
218 | |
219 | if ( %unreserve ) { |
220 | warn "Encounted " . keys( %unreserve ) . |
221 | " unsafe names in schema (reserved or invalid):\n"; |
222 | warn "\t" . join( "\n\t", sort keys %unreserve ) . "\n"; |
223 | } |
f8f0253c |
224 | } |
225 | |
da8e499e |
226 | return $output; |
f8f0253c |
227 | } |
228 | |
96844cae |
229 | # ------------------------------------------------------------------- |
230 | sub mk_name { |
0c43e0a1 |
231 | my $basename = shift || ''; |
232 | my $type = shift || ''; |
233 | my $scope = shift || ''; |
234 | my $critical = shift || ''; |
96844cae |
235 | my $basename_orig = $basename; |
bfb5a568 |
236 | # my $max_id_length = 62; |
2ad4c2c8 |
237 | my $max_name = $type |
238 | ? $max_id_length - (length($type) + 1) |
239 | : $max_id_length; |
96844cae |
240 | $basename = substr( $basename, 0, $max_name ) |
241 | if length( $basename ) > $max_name; |
242 | my $name = $type ? "${type}_$basename" : $basename; |
243 | |
244 | if ( $basename ne $basename_orig and $critical ) { |
245 | my $show_type = $type ? "+'$type'" : ""; |
246 | warn "Truncating '$basename_orig'$show_type to $max_id_length ", |
247 | "character limit to make '$name'\n" if $WARN; |
248 | $truncated{ $basename_orig } = $name; |
249 | } |
250 | |
251 | $scope ||= \%global_names; |
252 | if ( my $prev = $scope->{ $name } ) { |
253 | my $name_orig = $name; |
254 | $name .= sprintf( "%02d", ++$prev ); |
255 | substr($name, $max_id_length - 3) = "00" |
256 | if length( $name ) > $max_id_length; |
257 | |
258 | warn "The name '$name_orig' has been changed to ", |
259 | "'$name' to make it unique.\n" if $WARN; |
260 | |
261 | $scope->{ $name_orig }++; |
f8f0253c |
262 | } |
96844cae |
263 | |
264 | $scope->{ $name }++; |
265 | return $name; |
266 | } |
267 | |
268 | # ------------------------------------------------------------------- |
269 | sub unreserve { |
0c43e0a1 |
270 | my $name = shift || ''; |
271 | my $schema_obj_name = shift || ''; |
272 | |
96844cae |
273 | my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : ''; |
274 | |
275 | # also trap fields that don't begin with a letter |
bfb5a568 |
276 | return $name if (!$reserved{ uc $name }) && $name =~ /^[a-z]/i; |
96844cae |
277 | |
278 | if ( $schema_obj_name ) { |
279 | ++$unreserve{"$schema_obj_name.$name"}; |
280 | } |
281 | else { |
282 | ++$unreserve{"$name (table name)"}; |
283 | } |
284 | |
285 | my $unreserve = sprintf '%s_', $name; |
286 | return $unreserve.$suffix; |
f8f0253c |
287 | } |
288 | |
50840472 |
289 | # ------------------------------------------------------------------- |
290 | sub next_unused_name { |
291 | my $name = shift || ''; |
292 | my $used_names = shift || ''; |
293 | |
294 | my %used_names = %$used_names; |
295 | |
296 | if ( !defined($used_names{$name}) ) { |
297 | $used_names{$name} = $name; |
298 | return $name; |
299 | } |
300 | |
301 | my $i = 2; |
302 | while ( defined($used_names{$name . $i}) ) { |
303 | ++$i; |
304 | } |
305 | $name .= $i; |
306 | $used_names{$name} = $name; |
307 | return $name; |
308 | } |
309 | |
bfb5a568 |
310 | sub create_table |
311 | { |
312 | my ($table, $options) = @_; |
313 | |
314 | my $qt = $options->{quote_table_names} || ''; |
315 | my $qf = $options->{quote_field_names} || ''; |
316 | my $no_comments = $options->{no_comments} || 0; |
317 | my $add_drop_table = $options->{add_drop_table} || 0; |
318 | |
319 | my $table_name = $table->name or next; |
320 | $table_name = mk_name( $table_name, '', undef, 1 ); |
08d91aad |
321 | my $table_name_ur = $qt ? $table_name : unreserve($table_name); |
bfb5a568 |
322 | $table->name($table_name_ur); |
323 | |
324 | # print STDERR "$table_name table_name\n"; |
325 | my ( @comments, @field_defs, @sequence_defs, @constraint_defs, @fks ); |
326 | |
327 | push @comments, "--\n-- Table: $table_name_ur\n--" unless $no_comments; |
328 | |
329 | if ( $table->comments and !$no_comments ){ |
330 | my $c = "-- Comments: \n-- "; |
331 | $c .= join "\n-- ", $table->comments; |
332 | $c .= "\n--"; |
333 | push @comments, $c; |
334 | } |
335 | |
336 | # |
337 | # Fields |
338 | # |
339 | my %field_name_scope; |
340 | for my $field ( $table->get_fields ) { |
341 | push @field_defs, create_field($field, { quote_table_names => $qt, |
342 | quote_field_names => $qf, |
343 | table_name => $table_name_ur, |
344 | constraint_defs => \@constraint_defs,}); |
345 | } |
346 | |
347 | # |
348 | # Index Declarations |
349 | # |
350 | my @index_defs = (); |
351 | # my $idx_name_default; |
352 | for my $index ( $table->get_indices ) { |
353 | my ($idef, $constraints) = create_index($index, |
354 | { |
355 | quote_field_names => $qf, |
356 | quote_table_names => $qt, |
357 | table_name => $table_name, |
358 | }); |
359 | push @index_defs, $idef; |
360 | push @constraint_defs, @$constraints; |
361 | } |
362 | |
363 | # |
364 | # Table constraints |
365 | # |
366 | my $c_name_default; |
367 | for my $c ( $table->get_constraints ) { |
368 | my ($cdefs, $fks) = create_constraint($c, |
369 | { |
370 | quote_field_names => $qf, |
371 | quote_table_names => $qt, |
372 | table_name => $table_name, |
373 | }); |
374 | push @constraint_defs, @$cdefs; |
375 | push @fks, @$fks; |
376 | } |
377 | |
378 | my $create_statement; |
379 | $create_statement = join("\n", @comments); |
cc00c034 |
380 | $create_statement .= qq[DROP TABLE $qt$table_name_ur$qt CASCADE;\n] |
bfb5a568 |
381 | if $add_drop_table; |
382 | $create_statement .= qq[CREATE TABLE $qt$table_name_ur$qt (\n]. |
383 | join( ",\n", map { " $_" } @field_defs, @constraint_defs ). |
384 | "\n);" |
385 | ; |
bfb5a568 |
386 | |
387 | $create_statement .= "\n" . join(";\n", @index_defs) . "\n"; |
388 | |
08d91aad |
389 | return $create_statement, \@fks; |
bfb5a568 |
390 | } |
391 | |
392 | { |
393 | |
394 | my %field_name_scope; |
395 | |
396 | sub create_field |
397 | { |
398 | my ($field, $options) = @_; |
399 | |
400 | my $qt = $options->{quote_table_names} || ''; |
401 | my $qf = $options->{quote_field_names} || ''; |
402 | my $table_name = $field->table->name; |
403 | my $constraint_defs = $options->{constraint_defs} || []; |
404 | |
405 | $field_name_scope{$table_name} ||= {}; |
406 | my $field_name = mk_name( |
407 | $field->name, '', $field_name_scope{$table_name}, 1 |
408 | ); |
08d91aad |
409 | my $field_name_ur = $qf ? $field_name : unreserve($field_name, $table_name ); |
bfb5a568 |
410 | $field->name($field_name_ur); |
411 | my $field_comments = $field->comments |
412 | ? "-- " . $field->comments . "\n " |
413 | : ''; |
414 | |
415 | my $field_def = $field_comments.qq[$qf$field_name_ur$qf]; |
416 | |
417 | # |
418 | # Datatype |
419 | # |
420 | my @size = $field->size; |
421 | my $data_type = lc $field->data_type; |
422 | my %extra = $field->extra; |
423 | my $list = $extra{'list'} || []; |
424 | # todo deal with embedded quotes |
425 | my $commalist = join( ', ', map { qq['$_'] } @$list ); |
426 | my $seq_name; |
427 | |
428 | $field_def .= ' '. convert_datatype($field); |
429 | |
430 | # |
431 | # Default value -- disallow for timestamps |
432 | # |
f39e9c12 |
433 | # my $default = $data_type =~ /(timestamp|date)/i |
434 | # ? undef : $field->default_value; |
435 | my $default = $field->default_value; |
bfb5a568 |
436 | if ( defined $default ) { |
f39e9c12 |
437 | my $qd = "'"; |
438 | $qd = '' if ($default eq 'now()' || |
439 | $default eq 'CURRENT_TIMESTAMP'); |
bfb5a568 |
440 | $field_def .= sprintf( ' DEFAULT %s', |
441 | ( $field->is_auto_increment && $seq_name ) |
442 | ? qq[nextval('"$seq_name"'::text)] : |
f39e9c12 |
443 | ( $default =~ m/null/i ) ? 'NULL' : "$qd$default$qd" |
bfb5a568 |
444 | ); |
445 | } |
446 | |
447 | # |
448 | # Not null constraint |
449 | # |
450 | $field_def .= ' NOT NULL' unless $field->is_nullable; |
451 | |
452 | return $field_def; |
453 | } |
454 | } |
455 | |
456 | { |
457 | my %used_index_names; |
458 | |
459 | sub create_index |
460 | { |
461 | my ($index, $options) = @_; |
462 | |
463 | my $qt = $options->{quote_table_names} ||''; |
464 | my $qf = $options->{quote_field_names} ||''; |
465 | my $table_name = $index->table->name; |
08d91aad |
466 | # my $table_name_ur = $qt ? unreserve($table_name) : $table_name; |
bfb5a568 |
467 | |
468 | my ($index_def, @constraint_defs); |
469 | |
470 | $used_index_names{$table_name} ||= {}; |
471 | my $name = $index->name || ''; |
472 | if ( $name ) { |
473 | $name = next_unused_name($name, $used_index_names{$table_name}); |
474 | $used_index_names{$name} = $name; |
475 | } |
476 | |
477 | my $type = $index->type || NORMAL; |
478 | my @fields = |
479 | map { $_ =~ s/\(.+\)//; $_ } |
08d91aad |
480 | map { $qt ? $_ : unreserve($_, $table_name ) } |
bfb5a568 |
481 | $index->fields; |
482 | next unless @fields; |
483 | |
484 | my $def_start = qq[Constraint "$name" ]; |
485 | if ( $type eq PRIMARY_KEY ) { |
486 | push @constraint_defs, "${def_start}PRIMARY KEY ". |
487 | '(' .$qf . join( $qf. ', '.$qf, @fields ) . $qf . ')'; |
488 | } |
489 | elsif ( $type eq UNIQUE ) { |
490 | push @constraint_defs, "${def_start}UNIQUE " . |
491 | '(' . $qf . join( $qf. ', '.$qf, @fields ) . $qf.')'; |
492 | } |
493 | elsif ( $type eq NORMAL ) { |
494 | $index_def = |
08d91aad |
495 | "CREATE INDEX ${qf}${name}${qf} on ${qt}${table_name}${qt} (". |
bfb5a568 |
496 | join( ', ', map { qq[$qf$_$qf] } @fields ). |
497 | ');' |
498 | ; |
499 | } |
500 | else { |
501 | warn "Unknown index type ($type) on table $table_name.\n" |
502 | if $WARN; |
503 | } |
504 | |
505 | return $index_def, \@constraint_defs; |
506 | } |
507 | |
508 | sub create_constraint |
509 | { |
510 | my ($c, $options) = @_; |
511 | |
512 | my $qf = $options->{quote_field_names} ||''; |
513 | my $qt = $options->{quote_table_names} ||''; |
514 | my $table_name = $c->table->name; |
515 | my (@constraint_defs, @fks); |
516 | |
517 | my $name = $c->name || ''; |
518 | if ( $name ) { |
519 | $name = next_unused_name($name, \%used_index_names); |
520 | $used_index_names{$name} = $name; |
521 | } |
522 | |
523 | my @fields = |
524 | map { $_ =~ s/\(.+\)//; $_ } |
08d91aad |
525 | map { $qt ? $_ : unreserve( $_, $table_name )} |
bfb5a568 |
526 | $c->fields; |
527 | |
528 | my @rfields = |
529 | map { $_ =~ s/\(.+\)//; $_ } |
08d91aad |
530 | map { $qt ? $_ : unreserve( $_, $table_name )} |
bfb5a568 |
531 | $c->reference_fields; |
532 | |
533 | next if !@fields && $c->type ne CHECK_C; |
534 | my $def_start = $name ? qq[Constraint "$name" ] : ''; |
535 | if ( $c->type eq PRIMARY_KEY ) { |
536 | push @constraint_defs, "${def_start}PRIMARY KEY ". |
537 | '('.$qf . join( $qf.', '.$qf, @fields ) . $qf.')'; |
538 | } |
539 | elsif ( $c->type eq UNIQUE ) { |
540 | $name = next_unused_name($name, \%used_index_names); |
541 | $used_index_names{$name} = $name; |
542 | push @constraint_defs, "${def_start}UNIQUE " . |
543 | '('.$qf . join( $qf.', '.$qf, @fields ) . $qf.')'; |
544 | } |
545 | elsif ( $c->type eq CHECK_C ) { |
546 | my $expression = $c->expression; |
547 | push @constraint_defs, "${def_start}CHECK ($expression)"; |
548 | } |
549 | elsif ( $c->type eq FOREIGN_KEY ) { |
550 | my $def .= "ALTER TABLE ${qt}${table_name}${qt} ADD FOREIGN KEY (" . |
551 | join( ', ', map { qq[$qf$_$qf] } @fields ) . ')' . |
552 | "\n REFERENCES " . $qt . $c->reference_table . $qt; |
553 | |
554 | if ( @rfields ) { |
555 | $def .= ' ('.$qf . join( $qf.', '.$qf, @rfields ) . $qf.')'; |
556 | } |
557 | |
558 | if ( $c->match_type ) { |
559 | $def .= ' MATCH ' . |
560 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
561 | } |
562 | |
563 | if ( $c->on_delete ) { |
564 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
565 | } |
566 | |
567 | if ( $c->on_update ) { |
568 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
569 | } |
570 | |
571 | push @fks, "$def;"; |
572 | } |
573 | |
574 | return \@constraint_defs, \@fks; |
575 | } |
576 | } |
577 | |
578 | sub convert_datatype |
579 | { |
580 | my ($field) = @_; |
581 | |
582 | my @size = $field->size; |
583 | my $data_type = lc $field->data_type; |
584 | |
585 | if ( $data_type eq 'enum' ) { |
586 | # my $len = 0; |
587 | # $len = ($len < length($_)) ? length($_) : $len for (@$list); |
588 | # my $chk_name = mk_name( $table_name.'_'.$field_name, 'chk' ); |
589 | # push @$constraint_defs, |
590 | # qq[Constraint "$chk_name" CHECK ($qf$field_name$qf ]. |
591 | # qq[IN ($commalist))]; |
592 | $data_type = 'character varying'; |
593 | } |
594 | elsif ( $data_type eq 'set' ) { |
595 | $data_type = 'character varying'; |
596 | } |
597 | elsif ( $field->is_auto_increment ) { |
598 | if ( defined $size[0] && $size[0] > 11 ) { |
599 | $data_type = 'bigserial'; |
600 | } |
601 | else { |
602 | $data_type = 'serial'; |
603 | } |
604 | undef @size; |
605 | } |
606 | else { |
607 | $data_type = defined $translate{ $data_type } ? |
608 | $translate{ $data_type } : |
609 | $data_type; |
610 | } |
611 | |
612 | if ( $data_type =~ /timestamp/i ) { |
613 | if ( defined $size[0] && $size[0] > 6 ) { |
614 | $size[0] = 6; |
615 | } |
616 | } |
617 | |
618 | if ( $data_type eq 'integer' ) { |
619 | if ( defined $size[0] && $size[0] > 0) { |
620 | if ( $size[0] > 10 ) { |
621 | $data_type = 'bigint'; |
622 | } |
623 | elsif ( $size[0] < 5 ) { |
624 | $data_type = 'smallint'; |
625 | } |
626 | else { |
627 | $data_type = 'integer'; |
628 | } |
629 | } |
630 | else { |
631 | $data_type = 'integer'; |
632 | } |
633 | } |
634 | |
635 | # |
636 | # PG doesn't need a size for integers or text |
637 | # |
638 | undef @size if $data_type =~ m/(integer|smallint|bigint|text)/; |
639 | |
640 | if ( defined $size[0] && $size[0] > 0 ) { |
641 | $data_type .= '(' . join( ',', @size ) . ')'; |
642 | } |
08d91aad |
643 | elsif (defined $size[0] && $data_type eq 'timestamp' ) { |
644 | $data_type .= '(' . join( ',', @size ) . ')'; |
645 | } |
bfb5a568 |
646 | |
647 | |
648 | return $data_type; |
649 | } |
650 | |
651 | |
652 | sub alter_field |
653 | { |
654 | my ($from_field, $to_field) = @_; |
655 | |
656 | die "Can't alter field in another table" |
657 | if($from_field->table->name ne $to_field->table->name); |
658 | |
659 | my @out; |
660 | push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s SET NOT NULL;', |
661 | $to_field->table->name, |
662 | $to_field->name) if(!$to_field->is_nullable and |
663 | $from_field->is_nullable); |
664 | |
665 | my $from_dt = convert_datatype($from_field); |
666 | my $to_dt = convert_datatype($to_field); |
667 | push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s TYPE %s;', |
668 | $to_field->table->name, |
669 | $to_field->name, |
670 | $to_dt) if($to_dt ne $from_dt); |
671 | |
672 | push @out, sprintf('ALTER TABLE %s RENAME COLUMN %s TO %s;', |
673 | $to_field->table->name, |
674 | $from_field->name, |
675 | $to_field->name) if($from_field->name ne $to_field->name); |
676 | |
677 | push @out, sprintf('ALTER TABLE %s ALTER COLUMN %s SET DEFAULT %s;', |
678 | $to_field->table->name, |
679 | $to_field->name, |
680 | $to_field->default_value) |
681 | if(defined $to_field->default_value && |
682 | $from_field->default_value ne $to_field->default_value); |
683 | |
684 | return wantarray ? @out : join("\n", @out); |
685 | |
686 | } |
687 | |
688 | sub add_field |
689 | { |
690 | my ($new_field) = @_; |
691 | |
692 | my $out = sprintf('ALTER TABLE %s ADD COLUMN %s;', |
693 | $new_field->table->name, |
694 | create_field($new_field)); |
695 | return $out; |
696 | |
697 | } |
698 | |
699 | sub drop_field |
700 | { |
701 | my ($old_field) = @_; |
702 | |
703 | my $out = sprintf('ALTER TABLE %s DROP COLUMN %s;', |
704 | $old_field->table->name, |
705 | $old_field->name); |
706 | |
707 | return $out; |
708 | } |
709 | |
f8f0253c |
710 | 1; |
f8f0253c |
711 | |
96844cae |
712 | # ------------------------------------------------------------------- |
713 | # Life is full of misery, loneliness, and suffering -- |
714 | # and it's all over much too soon. |
715 | # Woody Allen |
716 | # ------------------------------------------------------------------- |
f8f0253c |
717 | |
96844cae |
718 | =pod |
f8f0253c |
719 | |
20770e44 |
720 | =head1 SEE ALSO |
721 | |
722 | SQL::Translator, SQL::Translator::Producer::Oracle. |
723 | |
f8f0253c |
724 | =head1 AUTHOR |
725 | |
20770e44 |
726 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
f8f0253c |
727 | |
728 | =cut |